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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STMicroelectronics
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36,707
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Price on request
36,707
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STMicroelectronics
<p>The BZW04-376B is a bidirectional Transil TVS diode from STMicroelectronics designed to protect sensitive electronics from voltage transients. It features a stand-off voltage of 376V and a minimum breakdown voltage of 418V, clamping transient overvoltages to a maximum of 603V at 800mA peak pulse current (10/1000µs waveform). With a peak pulse power dissipation of 400W, this diode provides robust protection for general-purpose applications.</p><p> </p><p>Key electrical characteristics include a low leakage current of 1µA at the stand-off voltage, a forward voltage drop of 1.5V, and a capacitance of 35pF at 1MHz. The device operates over a wide temperature range from -65°C to +175°C, with junction-to-lead thermal resistance of 60°C/W and junction-to-ambient thermal resistance of 100°C/W.</p><p> </p><p>The BZW04-376B is housed in a DO-204AC (DO-15) axial leaded package, suitable for through-hole mounting. It is not intended for power line protection but is ideal for protecting voltage-sensitive components in industrial, telecom, and consumer electronics.</p>
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36,537
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Price on request
36,537
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Semtech
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36,531
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Price on request
36,531
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Kyocera AVX
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36,500
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Price on request
36,500
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Texas Instruments
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36,498
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Price on request
36,498
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Kyocera AVX
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36,485
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Price on request
36,485
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Bourns
<p>The Bourns CG0402MLC-12LG is a surface mount multilayer ceramic varistor (MLCV) designed for ESD protection in high-speed electronic circuits. It features a maximum DC working voltage of 12 V and a typical capacitance of 5 pF at 1 MHz, making it suitable for applications requiring low capacitive loading.</p><p> </p><p>This varistor is housed in a compact 0402 (1005 Metric) package and supports surface mount assembly. It operates over a temperature range of -40°C to 85°C. The device is bidirectional and provides multi-strike ESD protection.</p><p> </p><p>Typical applications include ESD protection for camera links, sensors, touchscreen interfaces, GPS, antennas, USB 3.0, and high-speed communications buses. The component is RoHS3 compliant and has an MSL of Level 1 (unlimited).</p>
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36,451
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Price on request
36,451
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Amazing
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36,358
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Price on request
36,358
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Diotec Semiconductor
<p>The 3.0SMCJ36CA is a 3000W bidirectional transient voltage suppressor (TVS) diode from Diotec Semiconductor, designed for overvoltage and ESD protection in general-purpose applications. It features a stand-off voltage of 36.0 V, a minimum breakdown voltage of 40.00 V at 1 mA, and a maximum clamping voltage of 58.10 V at 51.60 A peak pulse current. The device can handle a peak pulse power dissipation of 3000 W under a 10/1000 µs waveform and a steady state power dissipation of 6.0 W at 75°C case temperature. It is housed in a DO-214AB (SMC) surface mount package and is rated for operation up to 150°C junction temperature. With a moisture sensitivity level of 1 (unlimited floor life), it is suitable for a wide range of industrial, automotive (with AEC-Q101 qualified versions available), and commercial applications.</p>
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36,276
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Price on request
36,276
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Vishay Dale
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36,270
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Price on request
36,270
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STMicroelectronics
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36,221
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Price on request
36,221
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On Semiconductor
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36,200
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Price on request
36,200
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Littelfuse Inc.
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36,103
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Price on request
36,103
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On Semiconductor
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36,089
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Price on request
36,089
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Diodes Incorporated
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36,040
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Price on request
36,040
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STMicroelectronics
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36,020
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Price on request
36,020
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STMicroelectronics
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36,020
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Price on request
36,020
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STMicroelectronics
<p>The ESDA25W5 is a 4-channel Zener-based TVS diode array from STMicroelectronics, designed for general purpose ESD protection. It features a reverse standoff voltage of 24V and a peak pulse power rating of 150W, making it suitable for protecting sensitive circuits from transient overvoltages. The device operates over a temperature range of -40°C to 125°C. It is surface mountable and available in a compact SOT323-5 package (also known as 5-TSSOP, SC-70-5, or SOT-353). The component is RoHS3 compliant and has a moisture sensitivity level of 1 (unlimited). It supports up to 4 unidirectional channels, but does not provide power line protection.</p>
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36,020
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Price on request
36,020
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STMicroelectronics
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36,020
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Price on request
36,020
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Diodes Incorporated
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36,020
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Price on request
36,020
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Comchip Technology
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36,000
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Price on request
36,000
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STMicroelectronics
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36,000
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Price on request
36,000
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STMicroelectronics
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36,000
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Price on request
36,000
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STMicroelectronics
<p>The ESDAVLC8-1BT2 is a bidirectional Zener TVS diode designed for general purpose ESD protection. It features a reverse standoff voltage of 3V and a peak pulse power rating of 30W. The device provides a single bidirectional channel with a typical capacitance of 4.5pF at 1MHz, making it suitable for high-speed signal lines.</p><p> </p><p>This TVS diode is housed in a compact SOD-882 surface mount package (supplier device package SOD-882T) and supports an operating temperature range of -55°C to 150°C. It is not intended for power line protection.</p><p> </p><p>The part is RoHS3 compliant and has an MSL of Level 1 (unlimited). It is commonly used in portable electronics, data lines, and other general purpose applications requiring low capacitance ESD protection.</p>
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36,000
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Price on request
36,000
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On Semiconductor
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36,000
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Price on request
36,000
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STMicroelectronics
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36,000
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Price on request
36,000
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Kyocera AVX
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36,000
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Price on request
36,000
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STMicroelectronics
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36,000
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Price on request
36,000
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STMicroelectronics
<p>The ESDA37L is a bidirectional Zener TVS diode designed for general purpose circuit protection. It features a maximum reverse standoff voltage of 36V and delivers 300W peak pulse power (8/20µs) with a peak pulse current of 6.3A. The device contains two independent unidirectional channels, making it suitable for protecting multiple lines.</p><p> </p><p>The diode operates over a junction temperature range of -40°C to 150°C and is not intended for power line protection. It is housed in a surface-mount SOT-23-3 package (also available as TO-236-3 or SC-59). The ESDA37L is RoHS3 compliant, REACH unaffected, and has an MSL of Level 1 (unlimited).</p><p> </p><p>This component is suitable for ESD protection and transient suppression in portable electronics, data lines, and other general purpose applications. For detailed design information, including breakdown voltage, clamping voltage, and capacitance, refer to the manufacturer's datasheet.</p>
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36,000
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Price on request
36,000
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Littelfuse Inc.
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36,000
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Price on request
36,000
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STMicroelectronics
<p>The ESDA9P25-1T2 is a 300W TVS diode from STMicroelectronics, designed for transient voltage suppression in general purpose applications. It features a Zener unidirectional configuration with a single channel. The device has a maximum reverse standoff voltage of 7.9V and a clamping voltage of 14.5V under 8/20 µs pulse conditions. Peak pulse current is rated at 24A.</p><p> </p><p>This TVS diode is suitable for protecting sensitive electronics from voltage spikes. It operates over a temperature range of -55°C to 150°C. The component is mounted using surface mount technology and comes in a compact SOD-882 package (SOD-882T supplier device package). Capacitance is 130pF at 1 MHz.</p><p> </p><p>The device is not intended for power line protection. It is RoHS3 and REACH compliant with MSL level 1. Typical applications include general purpose circuit protection.</p>
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36,000
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Price on request
36,000
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Diodes Incorporated
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36,000
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Price on request
36,000
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FUZETEC TECHNOLOGY
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35,678
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Price on request
35,678
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Diodes Incorporated
<p>The DT1140-04LP-7 is a 4-channel steering (rail-to-rail) TVS diode array from Diodes Incorporated, designed for protecting high-speed data lines. It provides ESD protection up to ±20kV air discharge and ±20kV contact discharge per IEC 61000-4-2, and lightning surge protection up to 6A (8/20µs) per IEC 61000-4-5.</p><p> </p><p>Key electrical characteristics include a reverse standoff voltage of 5.5V, typical clamping voltage of 9V (at 10A TLP and 6A 8/20µs), and ultra-low typical capacitance of 0.5pF, making it suitable for high-speed interfaces such as USB 2.0, HDMI, and Ethernet. The device also features a low TLP dynamic resistance of 0.25Ω and 60W peak pulse power.</p><p> </p><p>The DT1140-04LP-7 is housed in a surface-mount U-DFN2510-10 package (10-UFDFN), which is RoHS3 compliant, lead-free, halogen-free, and has an MSL of Level 1. It operates over a temperature range of -55°C to 85°C. The device is supplied in tape and reel packaging with 3000 pieces per reel.</p>
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35,662
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Price on request
35,662
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Diodes Incorporated
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35,590
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Price on request
35,590
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On Semiconductor
<p>The ESD10201MUT5G is a transient voltage suppressor (TVS) diode manufactured by On Semiconductor. This component is designed to protect sensitive electronic circuits from voltage transients and electrostatic discharge events.</p><p> </p><p>This TVS diode is RoHS3 compliant and REACH unaffected, meeting current environmental standards. It has a moisture sensitivity level (MSL) of 1, indicating unlimited floor life before soldering.</p><p> </p><p>As a TVS diode, it is suitable for use in circuit protection applications where overvoltage protection is required. The specific electrical characteristics such as standoff voltage, breakdown voltage, and clamping voltage are not provided in the available data.</p>
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35,524
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Price on request
35,524
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Diodes Incorporated
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35,519
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Price on request
35,519
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Semtech
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35,333
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Price on request
35,333
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Semtech
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35,333
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Price on request
35,333
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Littelfuse Inc.
<p>The Littelfuse 0154010.DR is a 10A, 125V AC/DC fast blow board mount fuse from the 154 Series OMNI-BLOK family. It features a surface mount package (2-SMD, square end block with holder) and requires a holder for installation. The fuse offers a breaking capacity of 35A AC and 50A DC, with a melting I²t of 26.46. It operates over a wide temperature range of -55°C to 125°C.</p><p> </p><p>This fuse is designed for efficient installation and easy replacement without exposing the PC board to solder heat. It is RoHS compliant and halogen-free, with agency approvals from PSE and UL. The compact dimensions (9.73mm x 5.03mm x 3.81mm) make it suitable for space-constrained applications.</p><p> </p><p>Typical applications include overcurrent protection in power supplies, industrial controls, and consumer electronics where fast-acting protection is required. The fuse is available in tape and reel packaging for automated assembly.</p>
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35,333
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Price on request
35,333
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STMicroelectronics
<p>The 1N5908 is a 1500W Mosorb Zener transient voltage suppressor designed to protect sensitive components from high-voltage, high-energy transients. It features excellent clamping capability, high surge capability, low zener impedance, and fast response time.</p><p> </p><p>Key electrical specifications include a working peak reverse voltage of 5V, a maximum clamping voltage of 8.5V at 120A peak pulse current (8/20µs), and a minimum breakdown voltage of 6.0V at 1.0mA test current. The device offers a peak power dissipation of 1500W at 1ms and a response time of less than 1ns.</p><p> </p><p>The 1N5908 is housed in a DO-201AD axial leaded through-hole package, suitable for manual and automated assembly. It is ideally suited for use in communication systems, numerical controls, process controls, medical equipment, business machines, and power supplies.</p>
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35,275
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Price on request
35,275
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Littelfuse Inc.
<p>The Littelfuse 046601.5NR is a 466 Series fast-acting surface mount fuse designed for secondary circuit protection in space-constrained applications. It is rated for 1.5A at 63VAC/VDC with a breaking capacity of 50A at rated voltage.</p><p> </p><p>This fuse features a fast-blow response time and a nominal cold resistance of 0.046 Ω. Its melting I²t is 0.1103 A²s, and the nominal voltage drop is 82.97 mV with a power dissipation of 0.1244 W. The device is housed in a 1206 (3216 Metric) package measuring 3.18mm x 1.52mm x 0.58mm.</p><p> </p><p>The 466 Series is 100% lead-free, RoHS compliant, and halogen-free (HF suffix available). It is approved by CSA and UL, making it suitable for a wide range of electronic applications requiring reliable overcurrent protection.</p>
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35,256
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Price on request
35,256
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Littelfuse Inc.
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35,246
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Price on request
35,246
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Littelfuse Inc.
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35,237
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Price on request
35,237
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Littelfuse Inc.
<p>The Littelfuse PolySwitch 1812L050PR is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for overcurrent protection in a wide range of electronic circuits. It provides automatic reset after fault conditions are cleared, eliminating the need for replacement fuses.</p><p> </p><p>The device is rated for a hold current of 500 mA and a trip current of 1 A at a maximum voltage of 15V DC. It can withstand fault currents up to 100 A. Typical power dissipation is 0.8 W. Initial resistance is as low as 0.15 Ω, rising to a maximum of 1 Ω after tripping. The time to trip at 8 A is 150 ms.</p><p> </p><p>The 1812L050PR is housed in a compact 1812 (4532 Metric) concave surface mount package, measuring 4.55 mm in length, 3.24 mm in width, and 0.75 mm in thickness. It operates over a temperature range of -40°C to +85°C. The component is RoHS compliant, lead-free, and halogen-free, suitable for high temperature soldering processes.</p>
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35,222
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Price on request
35,222
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Littelfuse Inc.
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35,152
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Price on request
35,152
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Littelfuse Inc.
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35,057
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Price on request
35,057
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Littelfuse Inc.
<p>The Littelfuse 0467004.NR is a 4A, 32V fast-acting (fast blow) surface mount fuse from the 467 Series. It is designed for secondary overcurrent protection in space-constrained applications such as portable electronic devices, cell phones, battery packs, and digital cameras.</p><p> </p><p>This fuse offers a low profile of 0.31mm and a flat top surface suitable for pick-and-place assembly. Its electrical characteristics include a cold resistance of 0.0118 Ω, a nominal melting I²t of 0.841 A²s, and a voltage drop of 63.1 mV at rated current. It operates across a temperature range of -55°C to 90°C.</p><p> </p><p>The 467 Series is compatible with lead-free soldering processes and is Halogen-free, Lead-free, and RoHS compliant. The 0603 (1608 Metric) package is ideal for high-density circuit designs where board space is at a premium.</p>
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35,035
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Price on request
35,035
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STMicroelectronics
<p>The BZW50-180RL is a unidirectional TVS diode from STMicroelectronics designed for general purpose transient voltage suppression. It features a reverse standoff voltage of 180V and a clamping voltage of 410V. The device can handle peak pulse currents up to 146A (8/20µs) and is rated for 5kW peak pulse power. It is not intended for power line protection. The diode has a typical capacitance of 1500pF at 1MHz. It is housed in an R-6 axial package with through-hole mounting, suitable for high-reliability applications requiring robust surge protection. The part is RoHS3 compliant and has an MSL of 1 (unlimited).</p>
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35,020
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Price on request
35,020
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Vishay Dale
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35,020
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Price on request
35,020
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