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 | |
|---|---|---|---|
Texas Instruments
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135,469
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Price on request
135,469
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Vishay Dale
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135,333
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Price on request
135,333
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On Semiconductor
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135,130
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Price on request
135,130
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STMicroelectronics
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135,051
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Price on request
135,051
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STMicroelectronics
<p>The STMicroelectronics ESDL031-1BF4 is a bidirectional Zener TVS diode designed to protect sensitive electronics from voltage transients. It features a reverse standoff voltage of 3.3V and a clamping voltage of 7V, providing effective overvoltage protection for low-voltage circuits.</p><p> </p><p>With a peak pulse power rating of 45W and a peak pulse current of 7A (8/20µs), this device can handle moderate transient events. Its low capacitance of 10pF at 1MHz makes it suitable for high-speed signal lines where signal integrity is critical.</p><p> </p><p>This TVS diode is housed in a compact 0201 (0603 Metric) surface mount package with the supplier device package designation ST0201. It is rated for operation over a junction temperature range of -55°C to 150°C, making it suitable for demanding environments including automotive applications.</p>
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135,000
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Price on request
135,000
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Vishay Dale
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134,316
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Price on request
134,316
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Vishay Dale
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133,026
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Price on request
133,026
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Vishay Dale
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132,969
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Price on request
132,969
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STMicroelectronics
<p>The BZW50-68 is a unidirectional Zener TVS diode from STMicroelectronics designed for general purpose transient voltage suppression. It has a reverse standoff voltage of 68V and a clamping voltage of 157V at a peak pulse current of 382A under an 8/20µs waveform. The device can handle a peak pulse power of 5000W (5kW).</p><p> </p><p>Key electrical characteristics include a capacitance of 3000pF at 1MHz. The diode is not intended for power line protection. It is packaged in an R-6, Axial case with through-hole mounting and axial termination. The supplier device package is R-6.</p><p> </p><p>This TVS diode is suitable for protecting sensitive electronic circuits from voltage transients in a variety of applications. The component is RoHS3 compliant, REACH unaffected, and has an MSL level of 1 (unlimited). Note that the datasheet is not available and some compliance data is unverified.</p>
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132,093
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Price on request
132,093
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Littelfuse Inc.
<p>The 2920L260PR is a polymeric PTC resettable fuse from Littelfuse's 2920L Series. It has a hold current of 2.6A and a trip current of 5.0A, with a maximum voltage rating of 6V and a fault current capability of 40A. Typical power dissipation is 1.5W. The time to trip at 8A is 10 seconds maximum. Initial resistance is 25 mΩ minimum, and post-trip resistance is 75 mΩ maximum (measured one hour after tripping or reflow soldering). The device is housed in a 2920 (7351 Metric) concave surface mount package measuring 7.35mm x 5.12mm with a maximum thickness of 1.25mm. It is marked with code LF260. The operating temperature range is -40°C to 85°C. This component is suitable for resettable overcurrent protection in circuits where automatic recovery is desired.</p>
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132,000
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Price on request
132,000
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Littelfuse Inc.
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131,600
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Price on request
131,600
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STMicroelectronics
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131,020
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Price on request
131,020
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On Semiconductor
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130,751
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Price on request
130,751
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Littelfuse Inc.
<p>The Littelfuse 0466002.NR is a fast-acting surface mount fuse (SMF) from the 466 Series, designed for overcurrent protection in space-constrained applications. This 2 Amp fuse is rated for 63 Volts AC/DC with a breaking capacity of 50A at rated voltage. Its fast-blow response provides rapid protection against short circuits and overloads.</p><p> </p><p>This fuse is housed in a standard 1206 (3216 Metric) surface mount package with dimensions 3.18mm x 1.52mm x 0.58mm, making it suitable for compact PCB layouts and pick-and-place assembly. The thin-film construction ensures low profile and reliable performance.</p><p> </p><p>Key specifications include a melting I²t of 0.2326 A²s, operating temperature range of -55°C to 90°C, and compatibility with lead-free soldering processes. The device is RoHS3 compliant, Halogen-Free, and Lead-Free, with CSA and UL agency approvals (file E10480).</p>
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130,384
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Price on request
130,384
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Vishay Dale
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130,000
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Price on request
130,000
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STMicroelectronics
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129,810
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Price on request
129,810
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STMicroelectronics
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129,295
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Price on request
129,295
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Vishay Dale
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129,020
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Price on request
129,020
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Littelfuse Inc.
<p>The Littelfuse 0251003.NRT1L is a board mount fuse from the PICO II 251 series, designed for very fast-acting overcurrent protection in space-constrained applications. It is rated for a current of 3 A and a voltage of 125 V (AC/DC), with a breaking capacity of 50 A AC and 300 A DC. Its fast blow response time ensures rapid disconnection during overcurrent events, making it suitable for protecting sensitive circuits. The fuse is housed in an axial through-hole package with dimensions of 0.110" diameter by 0.280" length (2.80mm x 7.11mm) and is designed for soldered mounting on printed circuit boards. It is RoHS3 compliant and has agency approvals including CCC, CSA, cURus, PSE, and TUV. This component is commonly used in power supplies, LCD displays, and other electronic equipment requiring secondary protection in a compact form factor.</p>
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128,933
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Price on request
128,933
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Littelfuse Inc.
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128,922
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Price on request
128,922
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STMicroelectronics
<p>The 1.5KE180A is a unidirectional transient voltage suppression (TVS) diode from STMicroelectronics, designed to protect sensitive electronic equipment from voltage transients. It features a reverse standoff voltage of 154V and a maximum clamping voltage of 317V at the peak pulse current. The device is rated for 1500W peak pulse power dissipation under a 10/1000μs waveform, making it suitable for surge protection in industrial, telecom, and consumer applications.</p><p> </p><p>This TVS diode offers a fast response time of less than 1ps from 0V to breakdown voltage, ensuring rapid clamping of transient events. It is housed in a DO-201AA, DO-27, or axial leaded package, with a DO-201 supplier device package, and is designed for through-hole mounting. The device supports a single unidirectional channel and has a capacitance of 725pF at 1MHz.</p><p> </p><p>The 1.5KE180A operates over a junction temperature range of -55°C to 175°C and features a thermal resistance of 15°C/W junction-to-lead and 75°C/W junction-to-ambient. It is lead-free with matte tin plating and is halogen free per the datasheet. The plastic package is rated UL 94 V-0 for flammability.</p>
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128,839
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Price on request
128,839
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Littelfuse Inc.
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128,578
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Price on request
128,578
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On Semiconductor
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128,000
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Price on request
128,000
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Vishay Dale
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127,915
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Price on request
127,915
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On Semiconductor
<p>The ESD5Z12T1G is a Zener TVS diode designed for ESD protection in space-constrained applications. It features a typical clamping voltage of 25V at 8/20 µs pulse and can handle peak pulse currents up to 9.6A, with a peak pulse power rating of 240W. The device offers excellent ESD protection meeting IEC 61000-4-2 Level 4 (±30 kV contact and air) and IEC 61000-4-4 Level 4 EFT protection (40A).</p><p> </p><p>With a response time of less than 1 ns and low capacitance of 55 pF at 1 MHz, this diode is suitable for high-speed data lines and portable electronics. It is unidirectional with a single channel and operates over a junction temperature range of -55°C to 150°C.</p><p> </p><p>The ESD5Z12T1G is housed in a compact SOD-523 surface mount package measuring 1.20 mm x 0.80 mm with a low body height of 0.7 mm. It is supplied in tape and reel packaging with a standard quantity of 3000 pieces. The device is RoHS compliant and meets MSL 1 requirements.</p>
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127,874
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Price on request
127,874
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Vishay Dale
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127,646
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Price on request
127,646
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STMicroelectronics
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127,500
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Price on request
127,500
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Vishay Dale
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127,415
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Price on request
127,415
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Nexperia USA Inc.
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127,020
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Price on request
127,020
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Diodes Incorporated
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126,243
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Price on request
126,243
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Vishay Dale
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126,195
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Price on request
126,195
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On Semiconductor
<p>The ESD7361HT1G is a low capacitance ESD protection diode from On Semiconductor, designed to protect high speed data lines from electrostatic discharge (ESD). It provides protection for IEC 61000-4-2 Level 4 ESD events up to ±15kV contact and air discharge, and meets IEC 61000-4-4 (EFT) and IEC 61000-4-5 (lightning) requirements. With an ultra-low capacitance of 0.55 pF maximum (I/O to GND), this device is ideal for voltage sensitive high speed data lines without compromising signal integrity. The diode features a 5V reverse standoff voltage (VRWM), typical breakdown voltage of 16.5V at 1 mA, and clamping voltage of 31V typical at 8A peak pulse current. Dynamic resistance is 0.735Ω typical, and insertion loss is 0.01 dB at 1 MHz and 2 dB at 5 GHz. The ESD7361HT1G is a unidirectional device with Zener technology, available in a surface mount SOD-323 package (SC-76). It is RoHS3 compliant, Pb-Free, and Halogen Free/BFR Free. The operating junction temperature range is -55°C to +125°C. Typical applications include wireless chargers and near field communication (NFC) circuits, as well as general purpose ESD protection for high speed data lines.</p>
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126,000
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Price on request
126,000
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Littelfuse Inc.
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126,000
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Price on request
126,000
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Vishay Dale
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125,280
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Price on request
125,280
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Kyocera AVX
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125,192
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Price on request
125,192
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Littelfuse Inc.
<p>This is a board mount fuse from Littelfuse Inc., rated for 100A continuous current at 75VDC. It features a breaking capacity of 1.5kA at rated voltage and a melting I²t of 6900 A²s. Designed for surface mount applications, it comes in a 2-SMD J-Lead package measuring 10.00mm x 11.20mm x 6.80mm.</p><p> </p><p>The fuse is cURus approved and operates over a temperature range of -55°C to 100°C. It is suitable for use in circuit protection applications where high current capability is required in a compact surface mount form factor.</p><p> </p><p>The J-Lead package enables reliable soldering to PCB pads. The fuse is RoHS3 compliant and REACH unaffected, though these compliance statuses are unverified. The part is available in tape and reel packaging from distributors.</p>
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125,000
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Price on request
125,000
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Kyocera AVX
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124,891
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Price on request
124,891
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Vishay Dale
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124,020
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Price on request
124,020
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Nexperia USA Inc.
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124,020
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Price on request
124,020
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Vishay Dale
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124,012
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Price on request
124,012
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Texas Instruments
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123,703
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Price on request
123,703
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NXP Semiconductors
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123,500
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Price on request
123,500
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On Semiconductor
<p>The CM1250-04QG is a low-capacitance ESD protection diode from On Semiconductor, designed to safeguard sensitive electronic circuits from electrostatic discharge (ESD) events. It features four unidirectional channels with a Zener TVS structure, providing robust protection for high-speed data lines.</p><p> </p><p>Key electrical specifications include a reverse standoff voltage of 8.5V, a typical clamping voltage of 6.1V at 5mA (maximum 8.5V), and a low typical leakage current of 0.1 µA at 3.5V. The device offers excellent ESD withstand capability: ±8 kV contact discharge per IEC 61000-4-2 and ±15 kV per MIL-STD-883 Method 3015 (HBM). Channel input capacitance is typically 5 pF at 0V and 3 pF at 2.5V, with differential I/O to GND capacitance of only 0.14 pF, making it suitable for high-speed interfaces.</p><p> </p><p>The CM1250-04QG is housed in a compact 6-UFDFN surface-mount package (6-UDFN 1.45x1), saving board space in space-critical applications. It operates over a temperature range of -40°C to 85°C and is RoHS3 compliant and Pb-Free. The device is supplied in tape and reel packaging with a standard quantity of 3000 units.</p>
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123,000
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Price on request
123,000
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On Semiconductor
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123,000
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Price on request
123,000
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On Semiconductor
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122,750
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Price on request
122,750
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Vishay Dale
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122,400
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Price on request
122,400
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On Semiconductor
<p>The ESD7551N2T5G is a Zener-type TVS diode designed for ESD protection in high-speed circuits. It features a reverse standoff voltage of 3.3V and a maximum clamping voltage of 13V. The device offers ultra-low capacitance of 0.25pF typical (0.35pF max) at 1MHz, making it ideal for high-frequency applications such as USB 2.0 and antenna line protection.</p><p> </p><p>This diode provides ±25kV ESD protection per IEC 61000-4-2 (contact and air) and has a response time of less than 1ns with low dynamic resistance below 1Ω. It is housed in a compact 2-X2DFN (1x0.6mm) surface mount package and operates over a junction temperature range of -55°C to 150°C.</p><p> </p><p>Designed for general purpose use, the device supports single bidirectional channel protection and is not intended for power line protection. Power dissipation is 250mW on FR-5 board at 25°C. The part is RoHS compliant, Pb-Free, and Halogen Free.</p>
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122,020
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Price on request
122,020
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Littelfuse Inc.
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121,548
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Price on request
121,548
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Diodes Incorporated
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121,336
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Price on request
121,336
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Nexperia USA Inc.
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121,020
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Price on request
121,020
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