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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Vishay Dale
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65,000
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Price on request
65,000
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Vishay Dale
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64,947
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Price on request
64,947
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STMicroelectronics
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64,856
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Price on request
64,856
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Vishay Dale
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64,800
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Price on request
64,800
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Littelfuse Inc.
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64,700
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Price on request
64,700
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STMicroelectronics
<p>The 1.5KE300ARL is a unidirectional transient voltage suppression (TVS) diode from STMicroelectronics, designed for general purpose overvoltage protection. It provides a peak pulse power of 1.5kW (1500W) for an 8/20µs waveform, with a peak pulse current of 19A. The device has a reverse standoff voltage of 256V and a clamping voltage of 529V.</p><p> </p><p>This TVS diode is suitable for protecting sensitive electronics from voltage transients in a variety of applications. It is a through-hole mounted component with an axial leaded package, available in DO-201AA, DO-27, or DO-201 packages. The capacitance is 500pF at 1MHz, making it appropriate for general purpose circuit protection.</p><p> </p><p>Note: The part is RoHS3 compliant, REACH unaffected, and has an MSL of 1 (unlimited).</p>
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64,600
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Price on request
64,600
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Texas Instruments
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64,571
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Price on request
64,571
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Renesas
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64,571
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Price on request
64,571
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STMicroelectronics
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64,189
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Price on request
64,189
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Littelfuse Inc.
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64,179
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Price on request
64,179
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Vishay Dale
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64,156
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Price on request
64,156
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STMicroelectronics
<p>The ESDA25L is a Zener-type transient voltage suppression (TVS) diode manufactured by STMicroelectronics. It is designed for general purpose circuit protection applications. Key electrical specifications include a reverse standoff voltage of 24V and a peak pulse power rating of 300W. The device incorporates two unidirectional channels for clamping overvoltage transients.</p><p> </p><p>This TVS diode is housed in a surface mount SOT-23-3 package (also known as TO-236-3 or SC-59). It is rated for operation over a junction temperature range of -40°C to 125°C. The component is RoHS3 compliant and has an MSL of 1 (unlimited).</p><p> </p><p>Typical applications include protection of sensitive electronics in consumer, industrial, and automotive environments where space is limited and surface mount assembly is required.</p>
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64,042
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Price on request
64,042
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On Semiconductor
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64,035
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Price on request
64,035
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Nexperia USA Inc.
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64,020
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Price on request
64,020
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Vishay Dale
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64,020
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Price on request
64,020
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Nexperia USA Inc.
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64,020
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Price on request
64,020
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Diodes Incorporated
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64,020
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Price on request
64,020
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On Semiconductor
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64,000
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Price on request
64,000
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Vishay Dale
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64,000
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Price on request
64,000
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Littelfuse Inc.
<p>The AQ4020-01FTG-C is a bidirectional TVS diode from Littelfuse designed for overvoltage protection in sensitive electronics. It features a reverse standoff voltage of 3.3V and a typical clamping voltage of 24.5V, with a peak pulse power rating of 735W (8/20µs waveform). The device offers a single bidirectional channel and low capacitance of 2.5pF at 1MHz, making it suitable for high-speed data lines.</p><p> </p><p>This TVS diode is designed for applications including automotive systems, CAN bus interfaces, Ethernet, and USB ports. The operating temperature range spans -40°C to 150°C, ensuring reliable performance in harsh environments.</p><p> </p><p>The component is supplied in a surface-mount SOD-323 package (also known as SC-76), which enables compact PCB layouts. It is RoHS3 compliant, REACH unaffected, and has an MSL of 1 (unlimited). The device is not intended for power line protection.</p>
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63,559
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Price on request
63,559
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Vishay Dale
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63,380
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Price on request
63,380
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Littelfuse Inc.
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63,349
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Price on request
63,349
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Vishay Dale
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63,335
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Price on request
63,335
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Texas Instruments
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63,304
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Price on request
63,304
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STMicroelectronics
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63,258
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Price on request
63,258
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Littelfuse Inc.
<p>The Littelfuse 0251004.NRT1L is a very fast-acting fuse from the PICO II series (251 Series). It is designed for secondary overcurrent protection in space-constrained electronic applications. With a subminiature axial lead package, this fuse provides reliable circuit protection in a small footprint.</p><p> </p><p>This fuse is rated for 4A of current at 125V AC/DC. Its fast blow response time ensures rapid opening under overcurrent conditions. Electrical specifications include a breaking capacity of 50A AC and 300A DC at rated voltage, a melting I²t of 2.45 A²s, a cold resistance of 0.0204 ohms, and a low voltage drop of 0.114V. The operating temperature range spans -55°C to 125°C.</p><p> </p><p>The 0251004.NRT1L fuse mounts through a through-hole axial lead configuration, with package dimensions of 0.110 inches diameter by 0.280 inches length (2.80mm x 7.11mm). It is suitable for automated insertion or manual assembly.</p><p> </p><p>This component carries safety approvals from CCC, CSA, cURus, PSE, and TUV, ensuring compliance with international standards. It is commonly used in power supplies, flat-panel displays, lighting systems, and medical equipment.</p>
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63,200
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Price on request
63,200
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Eaton - Electronics Division
<p>The Eaton BK/1A3400-09-R is a single-circuit cartridge fuse clip designed for 13/32" diameter fuses. It is rated for 20A continuous current and features a horizontal orientation for PCB mounting.</p><p> </p><p>The clip is constructed with spring bronze contacts and a tin finish, providing reliable electrical connection and corrosion resistance. Termination is via PC pins for through-hole soldering.</p><p> </p><p>This fuse holder is suitable for use in circuit protection applications where a replaceable cartridge fuse is required. The clip design allows for easy fuse insertion and removal.</p>
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63,000
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Price on request
63,000
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Nexperia USA Inc.
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63,000
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Price on request
63,000
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STMicroelectronics
<p>The ESDCAN05-2BWY is a bidirectional Zener TVS diode from STMicroelectronics, featuring two channels for protecting automotive CAN bus lines. It has a reverse standoff voltage of 36V and clamps to 61V at a peak pulse current of 3A (8/20µs). The device is rated for 170W peak pulse power, making it suitable for suppressing transients in automotive environments. It operates over a junction temperature range of -55°C to 175°C. The surface mount package is available in SC-70 or SOT-323, with a supplier device package of SOT-323-3. This component is designed for power line protection and is not intended for power line use. It is RoHS compliant and has an MSL of 1. The ESDCAN05-2BWY is ideal for use in automotive electronic control units and CAN transceiver interfaces where reliable ESD protection is required.</p>
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63,000
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Price on request
63,000
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Texas Instruments
<p>The ESDS314DBVR from Texas Instruments is a 4-channel unidirectional Zener TVS diode array designed for general-purpose ESD protection. It features a reverse standoff voltage of 3.6V and a typical clamping voltage of 6.5V.</p><p> </p><p>The device can handle peak pulse currents up to 25A under an 8/20µs waveform and delivers a peak pulse power rating of 170W. With a low capacitance of 4.5pF at 1MHz, it is suitable for high-speed signal line protection.</p><p> </p><p>This TVS diode array operates over a temperature range of -40°C to 125°C and is supplied in a compact SOT-23-5 surface-mount package, making it ideal for space-constrained designs requiring robust transient suppression.</p>
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62,994
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Price on request
62,994
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On Semiconductor
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62,984
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Price on request
62,984
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Littelfuse Inc.
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62,743
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Price on request
62,743
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STMicroelectronics
<p>The 1.5KE39ARL is a unidirectional transient voltage suppression (TVS) diode designed by STMicroelectronics for general-purpose overvoltage protection. It features a reverse standoff voltage of 33.3V and a clamping voltage of 69.7V, ensuring sensitive electronics are safeguarded against voltage transients.</p><p> </p><p>With a peak pulse power rating of 1500W (1.5kW) and a peak pulse current of 143A (8/20µs waveform), this diode can handle substantial surge events. The device has a capacitance of 2400pF at 1MHz, which is typical for high-power TVS diodes.</p><p> </p><p>The 1.5KE39ARL is offered in a through-hole DO-201AA / DO-27 axial package, making it suitable for board-level protection in power supplies, industrial controls, and communication equipment. It is RoHS3 compliant and has an MSL rating of 1 (unlimited).</p>
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62,700
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Price on request
62,700
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Kyocera AVX
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62,688
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Price on request
62,688
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TDK Corporation
<p>The AVR-M1005C080MTADB is a surface mount varistor from TDK Corporation designed for overvoltage protection in electronic circuits. It features a varistor voltage of 8V (typical) with a minimum of 6.4V and maximum of 9.6V. The device can handle a peak surge current of 25A and has an energy rating of 0.04J. Capacitance is 480pF at 1kHz. Operating temperature range is -40°C to 125°C. The component is housed in a 0402 (1005 Metric) package suitable for automated assembly. It is RoHS3 compliant and REACH unaffected. This varistor is commonly used in circuit protection applications requiring fast response to voltage transients in compact designs.</p>
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62,580
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Price on request
62,580
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Bel Fuse
<p>The Bel Fuse 0ZCJ0035AF2E is a polymeric PTC resettable fuse from the 0ZCJ series, designed for overcurrent protection in electronic circuits. It features a hold current of 350 mA and a trip current of 750 mA, with a maximum voltage rating of 30 V DC and a maximum fault current handling capability of 40 A. The device offers a typical power dissipation of 0.6 W and a fast time to trip of 100 ms at 8 A.</p><p> </p><p>The 0ZCJ0035AF2E comes in a standard 1206 (3216 Metric) concave surface mount package, measuring 3.25 mm in length, 1.65 mm in width, and 1.30 mm in thickness. It operates over a wide temperature range from -40°C to 85°C. The initial resistance is 0.3 Ω minimum, and the post-trip resistance is 1.2 Ω maximum at 23°C.</p><p> </p><p>This device is AEC-Q compliant, making it suitable for automotive applications. It is also RoHS and REACH compliant, and lead-free and halogen-free as confirmed by the datasheet. The 0ZCJ series from Bel Fuse is recognized for its fast trip time and low DC resistance, suitable for space-constrained designs.</p>
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62,577
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Price on request
62,577
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Vishay Dale
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62,520
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Price on request
62,520
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STMicroelectronics
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62,500
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Price on request
62,500
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STMicroelectronics
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62,500
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Price on request
62,500
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Bourns
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62,498
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Price on request
62,498
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Littelfuse Inc.
<p>The Littelfuse 0452002.MRL is a NANO2 Slo-Blo surface mount fuse designed for board mount applications. It is rated at 2A and 125VAC/VDC with a slow blow response time to accommodate inrush currents, preventing nuisance openings. The fuse has a breaking capacity of 50A at rated voltage and a melting I²t of 8.2 A²s.</p><p> </p><p>This fuse operates over a wide temperature range of -55°C to 125°C, making it suitable for demanding environments. It is packaged in a 2-SMD, square end block form factor with dimensions of 6.10mm x 2.69mm x 2.69mm, ideal for compact circuit designs.</p><p> </p><p>Typical applications include notebook PCs, LCD/PDP TVs, monitors, power supplies, networking equipment, telecom systems, battery charging circuits, and industrial equipment. The fuse is approved by CSA, PSE, and UR, and is RoHS compliant and halogen free per the datasheet.</p>
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62,392
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Price on request
62,392
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Semtech
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62,333
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Price on request
62,333
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Nexperia USA Inc.
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62,020
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Price on request
62,020
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Semtech
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62,000
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Price on request
62,000
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STMicroelectronics
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61,995
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Price on request
61,995
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STMicroelectronics
<p>The 1.5KE400A is a 1500W peak pulse power (10/1000µs) unidirectional TVS diode from STMicroelectronics, part of the 1.5KE series. It features a reverse standoff voltage of 342V, with a breakdown voltage range of 380V to 420V and a maximum clamping voltage of 706V at 14A peak pulse current (8/20µs). The device offers fast response time of less than 1ps from 0V to breakdown voltage, making it suitable for protecting sensitive electronics from lightning-induced transients and other voltage surges.</p><p> </p><p>This TVS diode is rated for ESD protection up to 30kV air discharge and 30kV contact discharge per IEC 61000-4-2. It operates over a junction temperature range of -55°C to +175°C with thermal resistance of 15°C/W junction-to-lead and 75°C/W junction-to-ambient. The unidirectional channel provides low leakage current, typically less than 1µA for breakdown voltages above 12V.</p><p> </p><p>The device is housed in a DO-201 (DO-201AA, DO-27, Axial) through-hole package with matte tin lead finish. It is lead-free (Pb-free E3) and halogen free, with a flammability rating of V-0 per UL. Typical applications include general purpose transient voltage protection in telecom, computer, industrial, and consumer electronics.</p>
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61,557
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Price on request
61,557
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Littelfuse Inc.
<p>This Littelfuse 01000020Z is a circuit board mount fuse clip designed for 5mm diameter cartridge fuses. It is rated for 20A continuous current at 600V, making it suitable for high-voltage, high-current applications. The clip is mounted via through hole and features PC pin termination for secure soldering to the PCB.</p><p> </p><p>The fuse clip is constructed with phosphor bronze contacts and tin plating, providing reliable electrical conductivity and corrosion resistance. The horizontal orientation and ear-style lead allow for easy insertion and retention of the fuse. This clip is compatible with a wide range of 5mm diameter fuse series including 213, 215, 216, 217, 218, 219XA, 232, 233, 234, 235, 239, 477, and 977 series.</p><p> </p><p>The component is part of Littelfuse's 100 series and is supplied in bulk packaging of 1000 pieces per standard package. It has agency approval under file E14721, indicating compliance with relevant safety standards.</p>
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61,503
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Price on request
61,503
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Texas Instruments
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61,364
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Price on request
61,364
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Littelfuse Inc.
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61,078
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Price on request
61,078
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Diodes Incorporated
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61,020
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Price on request
61,020
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