What are Circuit Protection ?
Circuit Protection refers to components designed to prevent damage to electrical circuits from overcurrent, voltage spikes, and other electrical anomalies. They are commonly used in applications such as production electronics assembly and maintenance. Important specifications include voltage rating, current rating, and response time; these attributes are critical for ensuring compatibility with existing designs and maintaining system performance. Additionally, validating lifecycle status is essential for procurement teams to ensure reliable sourcing.
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| Part & Mfr | Total Stock | Pricing & RFQ | |
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Bel Fuse
<p>The Bel Fuse 0ZCK0020FF2G is a polymeric PTC resettable fuse from the 0ZCK series. It offers a hold current of 200 mA and a trip current of 500 mA, with a maximum voltage rating of 9 V and a maximum fault current of 100 A. Typical power dissipation in the tripped state is 0.5 W, with minimum resistance of 0.400 Ω and maximum resistance after trip of 3.5 Ω. The device trips in 20 ms at 8 A fault current. Operating temperature range is -40°C to 85°C.</p><p> </p><p>It is housed in an 0805 (2012 Metric) concave surface mount package, measuring 2.15 mm x 1.35 mm x 1.00 mm. The component is RoHS3 compliant, lead-free, halogen-free, and AEC-Q200 qualified. It also holds TUV approval (EN/IEC 60738-1-1, EN/IEC 60730-1) and UL recognition (UL1434).</p><p> </p><p>Designed for overcurrent protection in circuits requiring resettable protection, this fuse is suitable for automotive electronics, industrial controls, and consumer devices. Its fast trip time and low resistance enable use in compact, space-constrained designs.</p>
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155,714
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Price on request
155,714
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On Semiconductor
<p>The ESD7004MUTAG is a low capacitance ESD protection diode from On Semiconductor designed to protect high speed data lines from electrostatic discharge. It provides protection for IEC 61000-4-2 Level 4 ESD strikes with ±15 kV contact and air discharge capability.</p><p> </p><p>The device features a reverse standoff voltage of 5 V and a clamping voltage of 10 V at 1 A (8/20 µs pulse). It offers ultra-low junction capacitance of 0.4 pF typical (I/O to GND) and 0.2 pF typical between I/O pins, making it suitable for high speed interfaces such as USB 3.0 and HDMI. The typical ESD clamping voltage is 11.4 V at 8 A TLP.</p><p> </p><p>The ESD7004MUTAG is housed in a 10-UDFN package (2.5x1 mm) with a flow-through design for easy PCB layout and matched trace lengths. It is surface mount and Pb-free. The operating temperature range is -55°C to 125°C.</p>
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155,378
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Price on request
155,378
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Texas Instruments
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155,177
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Price on request
155,177
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Diodes Incorporated
<p>The DLP05LC-7-F is a unidirectional TVS diode from Diodes Incorporated designed to protect sensitive electronic circuits from electrostatic discharge (ESD) and other transient overvoltage events. It offers a reverse standoff voltage of 5V and a minimum breakdown voltage of 6V at 1mA. The typical clamping voltage is 11V at a peak pulse current of 1A (8/20µs waveform), and the device can handle a peak pulse power of 300W under the same conditions.</p><p> </p><p>Key electrical characteristics include a low leakage current of 20µA maximum at 5V and an ultra-low capacitance of 1.6pF typical at 1MHz, making it suitable for high-speed data line protection. The diode is rated for operation over a junction temperature range of -55°C to 150°C.</p><p> </p><p>The DLP05LC-7-F is packaged in a surface-mount SOT-23-3 case with matte tin plated leads, supporting automated assembly. It is supplied in tape and reel format with 3000 pieces per reel on a 7-inch reel with 8mm tape width. The device is fully RoHS3 compliant, REACH unaffected, lead-free, halogen-free, and has an MSL rating of Level 1 (unlimited).</p>
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154,452
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Price on request
154,452
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Nexperia USA Inc.
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154,020
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Price on request
154,020
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Texas Instruments
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153,908
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Price on request
153,908
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STMicroelectronics
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153,442
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Price on request
153,442
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Vishay Dale
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153,040
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Price on request
153,040
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STMicroelectronics
<p>The ESDA041-1JY is a bidirectional Zener TVS diode from STMicroelectronics designed for transient voltage suppression in sensitive electronic circuits. It features a reverse standoff voltage of 3.6V and a clamping voltage of 9V, providing robust protection against voltage spikes.</p><p> </p><p>This device can handle a peak pulse current of 20A (8/20µs waveform) and has a capacitance of 190pF at 1MHz. It is rated for automotive applications and operates over a temperature range of -55°C to 150°C.</p><p> </p><p>The ESDA041-1JY is offered in a surface-mount SC-76/SOD-323 package, making it suitable for compact PCB designs. It is RoHS3 compliant and has an MSL rating of 1 (unlimited).</p>
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153,000
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Price on request
153,000
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STMicroelectronics
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153,000
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Price on request
153,000
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Vishay Dale
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152,165
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Price on request
152,165
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Murata
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152,009
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Price on request
152,009
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On Semiconductor
<p>The 1SMB12AT3G from On Semiconductor is a 600W unidirectional Zener TVS diode designed for general purpose transient voltage suppression. It features a reverse standoff voltage of 12V and a clamping voltage of 19.9V at a peak pulse current of 30.2A (8/20µs waveform). The device provides 600W peak pulse power dissipation for reliable circuit protection against ESD and other voltage transients.</p><p> </p><p>Packaged in a DO-214AA (SMB) surface mount package, the 1SMB12AT3G supports operating temperatures from -65°C to 150°C (junction). It is a single-channel unidirectional TVS diode suitable for general purpose applications requiring robust clamping performance with low leakage. The diode offers a capacitance of 1245pF at 1MHz, which should be considered for high-speed signal lines.</p><p> </p><p>With its industry-standard SMB footprint, this TVS diode can be easily integrated into automated assembly processes. It is commonly used for protecting sensitive circuits in consumer electronics, industrial controls, and communication equipment where 12V power rails need transient protection.</p>
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151,721
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Price on request
151,721
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STMicroelectronics
<p>The ESDAVLC8-1BU2 is a bidirectional TVS diode designed for general purpose applications. It features a reverse standoff voltage of 3V and a low typical capacitance of 5pF at 1MHz, making it suitable for high-speed signal line protection. The device is housed in a compact 0201 (0603 metric) surface mount package with ST0201 supplier device package designation. It operates over a junction temperature range of -40°C to 125°C. The ESDAVLC8-1BU2 is RoHS3 compliant and REACH unaffected, with an MSL rating of 1 (unlimited). It does not provide power line protection. This TVS diode is from STMicroelectronics and is designed for general purpose ESD protection in compact electronic devices.</p>
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151,426
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Price on request
151,426
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Diodes Incorporated
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151,020
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Price on request
151,020
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STMicroelectronics
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150,632
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Price on request
150,632
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Diodes Incorporated
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150,455
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Price on request
150,455
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On Semiconductor
<p>The ESD7102BT1G is a transient voltage suppressor designed to protect high-speed data lines from electrostatic discharge (ESD). It offers ultra-low capacitance of 0.3 pF typical between I/O and ground, making it suitable for high-speed differential pairs such as USB 3.0 and HDMI. The device provides ESD protection up to ±8 kV contact and ±15 kV air discharge per IEC 61000-4-2.</p><p> </p><p>Key electrical characteristics include a reverse working voltage of 5 V, a minimum breakdown voltage of 16.5 V at 1 mA, and a typical clamping voltage of 30 V. The dynamic resistance is 1.5 Ω typical, and the insertion loss is only 0.1 dB at 1 GHz. The device is housed in a compact SC-75 (SOT-416) surface-mount package with a flow-through design for easy PCB layout and matched trace lengths.</p><p> </p><p>The ESD7102BT1G is Pb-Free and RoHS3 compliant, with a moisture sensitivity level of 1 (unlimited). It operates over a junction temperature range of -55°C to 125°C. This diode is ideal for protecting voltage-sensitive high-speed data lines in consumer, industrial, and automotive applications (automotive qualified version SZESD7102 available).</p>
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150,000
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Price on request
150,000
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STMicroelectronics
<p>The ESDAVLC5-1BF4 is a Zener-type bidirectional TVS diode from STMicroelectronics. It is designed for general purpose ESD protection applications. The device has a reverse standoff voltage of 5.3V typical and clamping voltage of 19.2V typical at peak pulse current.</p><p> </p><p>Electrical characteristics include a peak pulse current of 1.7A (8/20µs waveform) and peak pulse power dissipation of 20W. The diode offers a low capacitance of 7pF at 1MHz, making it suitable for high-speed signal lines. It is not intended for power line protection.</p><p> </p><p>The device is housed in a 0201 (0603 metric) surface mount package with supplier device package 0201. It has an operating temperature range of -55°C to 150°C. The MSL is level 1, allowing unlimited floor life. RoHS3 and REACH compliant.</p>
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150,000
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Price on request
150,000
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Vishay Dale
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150,000
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Price on request
150,000
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STMicroelectronics
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150,000
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Price on request
150,000
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STMicroelectronics
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149,842
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Price on request
149,842
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STMicroelectronics
<p>The ESDLIN1524BJ is a bidirectional TVS (Transient Voltage Suppression) diode manufactured by STMicroelectronics. It is designed to protect sensitive electronics from voltage transients induced by electrostatic discharge (ESD) and other surge events.</p><p> </p><p>Key electrical specifications include a peak pulse power rating of 160W, with a peak pulse current of 5A (8/20µs) clamping at 35V, and 3A (8/20µs) clamping at 50V. The device offers a low capacitance of 16pF at 1MHz, making it suitable for high-speed signal lines. It is a single bidirectional channel device and does not provide power line protection.</p><p> </p><p>The ESDLIN1524BJ is housed in a surface mount SOD-323 package (SC-76), with an operating junction temperature range of -40°C to 150°C. It is intended for use in automotive applications and is RoHS3 and REACH compliant.</p>
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148,823
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Price on request
148,823
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Diodes Incorporated
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148,020
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Price on request
148,020
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Littelfuse Inc.
<p>The 1210L010WR is a polymeric PTC resettable fuse from Littelfuse's 1210L series. It offers a hold current of 100 mA and a trip current of 300 mA at 20°C still air. The maximum voltage rating is 30 V with a maximum fault current of 10 A. Typical power dissipation in the tripped state is 0.6 W. The time to trip is 1.5 seconds at 0.5 A. Initial resistance is 1.6 Ω minimum, and post-trip resistance is 15 Ω maximum. Operating temperature ranges from -40°C to 85°C. The device is housed in a 1210 (3225 Metric) concave surface mount package. It is RoHS3 compliant and halogen-free. Suitable for overcurrent protection in space-constrained applications such as portable electronics and USB ports.</p>
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147,615
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Price on request
147,615
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STMicroelectronics
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147,500
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Price on request
147,500
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On Semiconductor
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147,200
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Price on request
147,200
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Littelfuse Inc.
<p>The 0287040.PXCN is a 40A automotive blade fuse from the Littelfuse ATOF series. Designed to protect low-voltage DC circuits in vehicles, it operates at a maximum voltage of 32V DC and has an interrupting rating of 1000A at 32V DC. The fuse features a typical voltage drop of 96 mV and cold resistance of 1.44 mΩ, with a melting I²t of 3300 A²s.</p><p> </p><p>The fuse uses a standard ATO/ATC blade package (19.1 x 5.1 x 12.3 mm) with orange housing indicating the 40A rating. It requires a compatible fuse holder for installation. The housing is made of PA66 plastic with UL 94 V-2 flammability rating, and the terminals are tin-plated. Weight is approximately 1.4 g per fuse.</p><p> </p><p>This fuse complies with SAE J1284 and ISO 8820-3 standards, and is UL listed and CSA certified. It is suitable for use in cars, trucks, SUVs, off-road vehicles, buses, and watercraft (as approved by Littelfuse). The operating temperature range is -40°C to +125°C.</p>
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147,000
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Price on request
147,000
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On Semiconductor
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146,900
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Price on request
146,900
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On Semiconductor
<p>The ESDM3551N2T5G is a bidirectional zener TVS diode designed for ESD and transient voltage protection in space-constrained applications. It has a working peak reverse voltage of 5.5V and a maximum clamping voltage of 8.2V at 8A peak pulse current. The diode offers extremely low capacitance of 21 pF at 1MHz, making it suitable for high-speed data line protection.</p><p> </p><p>ESD protection exceeds IEC 61000-4-2 Level 4 with ±30kV contact and air discharge ratings. The device is housed in a compact 2-X2DFN (1x0.6mm) surface mount package with a low profile of 0.3mm. It supports a wide operating temperature range of -55°C to 150°C and has a total power dissipation of 250mW on FR-5 board.</p><p> </p><p>Typical applications include USB ID line protection, SD card interfaces, audio lines, and GPIO pins. The ESDM3551N2T5G is Pb-Free, Halogen-Free/BFR Free, and RoHS3 compliant. It is supplied in tape and reel packaging with a standard quantity of 8000 pieces per reel.</p>
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146,622
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Price on request
146,622
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Littelfuse Inc.
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145,690
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Price on request
145,690
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STMicroelectronics
<p>The ESDA6V1BC6 is a bidirectional transient voltage suppression (TVS) diode designed by STMicroelectronics. It features a reverse standoff voltage of 5V and a peak pulse power rating of 80W, making it suitable for protecting sensitive circuits from voltage transients. The device integrates four bidirectional channels using Zener technology, providing robust protection for multiple data lines or I/O ports. Its operating temperature range of -40°C to 125°C allows for use in various environments. The component is housed in a compact SOT-23-6 surface mount package, compliant with RoHS3 and MSL Level 1. It is intended for general purpose applications where circuit protection is required, particularly where power line protection is not needed.</p>
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145,254
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Price on request
145,254
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STMicroelectronics
<p>The 1.5KE440A is a 1500W peak pulse power TVS diode designed by STMicroelectronics for protecting sensitive electronic equipment from voltage transients. It features a reverse standoff voltage of 376V and a clamping voltage of 776V at a peak pulse current of 13A (8/20µs waveform).</p><p> </p><p>This unidirectional device offers fast response time typically less than 1.0ps and low incremental surge resistance. It is housed in a DO-201AA/DO-27 axial leaded through-hole package and operates over a junction temperature range of -55°C to 175°C.</p><p> </p><p>The diode is suitable for general purpose transient protection applications such as I/O interfaces, VCC bus, and other vulnerable circuits in telecom, computer, industrial and consumer electronics. It is RoHS3 compliant and halogen free per the datasheet.</p>
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144,001
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Price on request
144,001
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Vishay Dale
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143,373
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Price on request
143,373
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On Semiconductor
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142,000
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Price on request
142,000
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Texas Instruments
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141,051
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Price on request
141,051
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Diodes Incorporated
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141,020
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Price on request
141,020
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Micro Commercial
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140,100
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Price on request
140,100
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Kyocera AVX
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140,000
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Price on request
140,000
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On Semiconductor
<p>The ESDM3031MXT5G is a bi-directional Zener TVS diode designed for ESD and transient voltage protection. It features a reverse standoff voltage of 3.3V and a breakdown voltage range of 4.4V to 6.2V at 1mA. Clamping voltage is typically 6.3V at 5A and 8.0V at 10A, with a maximum peak pulse current of 11A (8/20µs waveform). The device provides excellent ESD protection with ±30kV contact and air discharge ratings per IEC61000-4-2 Level 4.</p><p> </p><p>With an ultra-small 0201 (0603 Metric) X3DFN2 package measuring just 0.62mm x 0.32mm and 0.3mm height, this diode is ideal for space-constrained designs. It offers low leakage current of 0.1µA typical and low junction capacitance of 20pF maximum, making it suitable for high-speed signal lines. The device is RoHS3 compliant, Pb-Free, and Halogen Free/BFR Free.</p><p> </p><p>Typical applications include SD card interface protection, audio line protection, and GPIO ESD protection. The operating temperature range is from -55°C to 150°C, with a maximum power dissipation of 250mW on FR-5 board. Packaging is Tape & Reel with a standard quantity of 10,000 pieces.</p>
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140,000
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Price on request
140,000
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Diodes Incorporated
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139,020
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Price on request
139,020
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Diodes Incorporated
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139,020
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Price on request
139,020
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On Semiconductor
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138,817
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Price on request
138,817
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Diodes Incorporated
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138,247
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Price on request
138,247
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Littelfuse Inc.
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137,645
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Price on request
137,645
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Diodes Incorporated
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137,221
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Price on request
137,221
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STMicroelectronics
<p>The 1.5KE33CA is a bidirectional transient voltage suppression (TVS) diode from STMicroelectronics, designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient events. It features a reverse standoff voltage of 28.2V, with a breakdown voltage range of 31.4V to 34.7V, and a maximum clamping voltage of 59V at the peak pulse current. The device can handle 1500W of peak pulse power for a 10/1000µs waveform, making it suitable for general-purpose surge protection in telecom, computer, industrial, and consumer electronics. It is housed in a through-hole DO-201AA/DO-27 axial-lead package and operates over a junction temperature range of -55°C to 175°C. The part is RoHS3 compliant and halogen-free, with a lead-free E3 finish.</p>
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136,290
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Price on request
136,290
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STMicroelectronics
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136,020
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Price on request
136,020
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STMicroelectronics
<p>The ESDALC6V1-1U2 is a TVS diode manufactured by STMicroelectronics designed for ESD protection. It features a reverse standoff voltage of 3 V, a peak pulse power rating of 20 W, and a typical capacitance of 12 pF at 1 MHz. This unidirectional Zener-type device provides a single channel of protection.</p><p> </p><p>This diode operates over a junction temperature range of -40°C to 125°C and is intended for general purpose applications. Its low capacitance makes it suitable for high-speed signal lines where signal integrity is critical.</p><p> </p><p>The device is housed in a compact 0201 (0603 metric) surface mount package with supplier package designation ST0201. It is RoHS compliant and has an MSL rating of 1 (unlimited). The part is available from distributors such as DigiKey under cross-reference numbers 497-8752-2-ND, 497-8752-1-ND, and 497-8752-6-ND.</p>
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135,960
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Price on request
135,960
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STMicroelectronics
<p>The ESDA14V2L is a Zener clamping TVS diode from STMicroelectronics designed for general purpose transient voltage suppression. It features a 12V reverse standoff voltage and a peak pulse power dissipation of 300W. The device incorporates two unidirectional channels, providing protection for two independent lines.</p><p> </p><p>This TVS diode is surface mountable in a SOT-23-3 package (also available as TO-236-3 and SC-59). It operates over a temperature range of -40°C to 125°C. The Zener clamping technology ensures fast response to overvoltage events.</p><p> </p><p>Typical applications include general purpose circuit protection in consumer electronics, portable devices, and low voltage power supplies. The compact SOT-23-3 package is suitable for space-constrained designs.</p>
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135,907
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Price on request
135,907
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