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 | |
|---|---|---|---|
STMicroelectronics
<p>The 1.5KE400CA is a bidirectional Zener TVS diode designed to protect sensitive electronic equipment from voltage transients. It features a reverse standoff voltage of 342V and a clamping voltage of 706V, with a peak pulse current rating of 14A (8/20µs waveform). The device can dissipate 1500W of peak pulse power, making it suitable for surge protection in general-purpose applications.</p><p> </p><p>This TVS diode is housed in a through-hole DO-201 (DO-201AA, DO-27, Axial) package and supports an operating junction temperature range of -55 to 175°C. It has a fast response time of typically less than 1.0ps from 0V to breakdown voltage. The component is RoHS3 compliant and halogen free, with matte tin lead finish.</p>
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45,471
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Price on request
45,471
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Littelfuse Inc.
<p>The Littelfuse 0454002.MR is a NANO2 Slo-Blo surface mount fuse from the 452/454 series. It is rated for 2A continuous current at 125VAC/VDC with a breaking capacity of 50A. The slow blow response time accommodates inrush currents, preventing nuisance openings. This fuse is RoHS compliant and halogen free. It comes in a 2-SMD square end block package measuring 6.10mm x 2.69mm x 2.69mm, suitable for surface mount assembly. Operating temperature range is -55°C to 125°C. Applications include notebook PCs, LCD TVs, power supplies, and battery charging circuits.</p>
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45,385
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Price on request
45,385
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Diodes Incorporated
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45,369
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Price on request
45,369
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Bulgin LTD.
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45,279
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Price on request
45,279
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Vishay Dale
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45,220
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Price on request
45,220
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Bourns
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45,200
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Price on request
45,200
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Diodes Incorporated
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45,006
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Price on request
45,006
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STMicroelectronics
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45,000
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Price on request
45,000
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STMicroelectronics
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45,000
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Price on request
45,000
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Infineon Technologies
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45,000
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Price on request
45,000
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STMicroelectronics
<p>The ESDZV5HS-1BF4 is a TVS diode from STMicroelectronics designed for general purpose ESD protection. It features a reverse standoff voltage of 5.5V and uses Zener technology to clamp transient voltages. The device has a single bidirectional channel and a low capacitance of 7pF at 1GHz, making it suitable for high-speed signal lines.</p><p> </p><p>This diode is housed in a compact 0201 (0603 metric) surface mount package, ideal for space-constrained designs. It operates at a junction temperature up to 150°C and is RoHS3 compliant. The part is intended for general purpose applications where ESD protection is required.</p><p> </p><p>With its small footprint and low capacitance, the ESDZV5HS-1BF4 can be used in portable electronics, communication interfaces, and other sensitive circuits. The surface mount package allows for automated assembly and high-density PCB layouts.</p>
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45,000
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Price on request
45,000
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STMicroelectronics
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45,000
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Price on request
45,000
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Nexperia USA Inc.
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45,000
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Price on request
45,000
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Bourns
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45,000
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Price on request
45,000
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Littelfuse Inc.
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45,000
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Price on request
45,000
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Littelfuse Inc.
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45,000
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Price on request
45,000
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Vishay Dale
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45,000
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Price on request
45,000
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Würth Elektronik
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45,000
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Price on request
45,000
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STMicroelectronics
<p>The ESDAULC5-1BF4 is a bidirectional TVS diode designed for general purpose applications. It features a reverse standoff voltage of 3V and a typical clamping voltage of 13.5V. With a peak pulse current rating of 10A (8/20µs) and peak pulse power of 140W, it provides protection against transient voltage spikes. The device has a single bidirectional channel and is not designed for power line protection. It is housed in a 0201 (0603 metric) surface mount package with an operating temperature range of -40°C to 150°C.</p>
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45,000
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Price on request
45,000
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Littelfuse Inc.
<p>The Littelfuse 1206L075THYR is a PolySwitch PTC resettable fuse designed for overcurrent protection in space-constrained applications. It has a hold current of 0.75 A and a trip current of 1.5 A, with a maximum voltage rating of 8 V and a maximum fault current of 100 A. The device features a typical power dissipation of 0.6 W and a time to trip of 200 ms at 8 A.</p><p> </p><p>This PTC fuse uses polymeric positive temperature coefficient technology, providing resettable protection. Its initial minimum resistance is 0.090 Ω, and the maximum post-trip resistance is 0.290 Ω. The operating temperature range is -40°C to 85°C.</p><p> </p><p>The component is housed in a 1206 (3216 Metric) concave surface mount package, measuring 3.20 mm in length, 1.65 mm in width, and 0.75 mm in thickness. It is RoHS compliant, lead-free, and halogen-free.</p>
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44,913
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Price on request
44,913
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Littelfuse Inc.
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44,783
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Price on request
44,783
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Littelfuse Inc.
<p>The 2920L185DR is a polymeric PTC resettable fuse from Littelfuse's 2920L series. It offers overcurrent protection with a hold current of 1.85 A at 20°C still air and a minimum trip current of 3.7 A. The device is rated for a maximum voltage of 33 V and can handle up to 40 A of fault current. Typical power dissipation in the tripped state is 1.5 W. Initial resistance is 50 mΩ minimum, increasing to 150 mΩ maximum one hour after tripping. At a fault current of 8 A, the fuse trips within 2.5 seconds maximum. The operating temperature range spans -40°C to 85°C. Housed in a 2920 (7351 Metric) concave surface mount package, it is suitable for automated assembly in medium-voltage applications requiring resettable protection.</p>
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44,711
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Price on request
44,711
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On Semiconductor
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44,670
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Price on request
44,670
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Semtech
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44,565
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Price on request
44,565
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Diodes Incorporated
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44,520
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Price on request
44,520
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Littelfuse Inc.
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44,514
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Price on request
44,514
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Semtech
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44,336
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Price on request
44,336
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Littelfuse Inc.
<p>The Littelfuse 1812L110/33MR is a surface mount polymeric PTC resettable fuse from the 1812L series, designed for overcurrent protection in a wide range of electronic applications. It offers a hold current of 1.1 A and a trip current of 1.95 A, with a maximum voltage rating of 33 V and a maximum interrupt current of 20 A. The device has a typical power dissipation of 0.8 W and a fast time-to-trip of 500 ms at 8 A.</p><p> </p><p>This PTC fuse features low resistance values, with an initial minimum resistance of 60 mΩ and a maximum post-trip resistance of 200 mΩ, ensuring minimal power loss during normal operation. It is housed in a standard 1812 (4532 Metric) concave package, suitable for automated surface mount assembly. The component is RoHS compliant, lead-free, and halogen-free, meeting modern environmental standards.</p><p> </p><p>Typical applications include plug-and-play protection for motherboards and peripherals, USB port protection, PCI cards, and game console port protection. The device operates over a temperature range of -40°C to 85°C, making it suitable for both consumer and industrial environments.</p>
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44,122
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Price on request
44,122
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Kyocera AVX
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44,016
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Price on request
44,016
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On Semiconductor
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43,980
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Price on request
43,980
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Semtech
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43,805
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Price on request
43,805
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On Semiconductor
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43,780
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Price on request
43,780
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Littelfuse Inc.
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43,600
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Price on request
43,600
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Vishay Dale
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43,539
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Price on request
43,539
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STMicroelectronics
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43,520
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Price on request
43,520
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Littelfuse Inc.
<p>The Littelfuse 1812L150ZR is a PolySwitch resettable PPTC (polymeric positive temperature coefficient) overcurrent protection device designed for surface mount applications. It provides resettable protection for circuits where a one-time fuse would require replacement.</p><p> </p><p>Key electrical specifications include a hold current of 1.25 A, a trip current of 2.5 A, and a maximum voltage rating of 8 V DC. The device can handle a maximum interrupt current of 100 A and dissipates 0.8 W of power. Typical initial resistance is 0.11 Ω, with a minimum initial resistance of 0.05 Ω and a maximum post-trip resistance of 0.14 Ω. Trip time is 300 ms at 8 A.</p><p> </p><p>The 1812L150ZR is housed in an 1812 (4532 Metric) concave surface mount package measuring 4.55 mm by 3.24 mm with a thickness of 1.25 mm. It operates over a temperature range of -40°C to 85°C. The datasheet reports compliance with RoHS, lead-free, and halogen-free requirements.</p>
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43,422
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Price on request
43,422
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On Semiconductor
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43,357
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Price on request
43,357
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Texas Instruments
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43,134
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Price on request
43,134
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Diodes Incorporated
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43,133
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Price on request
43,133
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Bourns
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43,100
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Price on request
43,100
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Texas Instruments
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43,039
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Price on request
43,039
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On Semiconductor
<p>The ESD5Z7.0T5G is a unidirectional TVS diode from On Semiconductor, part of the ESD5Z2.5T1G series. It is designed to protect voltage-sensitive components from electrostatic discharge (ESD) and transient voltage events. The device features a working voltage (standoff) of 7V and a maximum clamping voltage of 22.7V at a peak pulse current of 8.8A (8/20µs pulse). With a peak pulse power rating of 200W, it provides robust protection for sensitive circuits.</p><p> </p><p>This diode offers excellent ESD protection, rated at ±30kV for both contact and air discharge per IEC 61000-4-2, and exceeds 16kV HBM. It has a typical capacitance of 65pF at 1MHz, making it suitable for high-speed data lines. The device is housed in a surface-mount SOD-523 package with matte tin termination, and is supplied in tape and reel with a standard quantity of 8000 pieces.</p><p> </p><p>Typical applications include cellular phones, portable devices, digital cameras, power supplies, and other portable electronics where board space is at a premium. The device is RoHS3 compliant and Pb-Free, with an MSL rating of 1 (unlimited).</p>
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43,000
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Price on request
43,000
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STMicroelectronics
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43,000
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Price on request
43,000
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STMicroelectronics
<p>The 1.5KE300A is a unidirectional Zener transient voltage suppression (TVS) diode designed for general purpose circuit protection. Manufactured by STMicroelectronics, this device provides a peak pulse power dissipation of 1500W (1.5kW) under 8/20µs waveform conditions.</p><p> </p><p>Key electrical characteristics include a reverse standoff voltage of 256V and a clamping voltage of 529V at a peak pulse current of 19A (8/20µs). The diode exhibits a typical capacitance of 500pF at 1MHz, which is suitable for protecting against voltage transients in various applications.</p><p> </p><p>The 1.5KE300A is housed in a DO-201AA (DO-27) through-hole axial leaded package, with the supplier device package designated as DO-201. It is mounted using through-hole technology with axial leads, making it suitable for traditional PCB assembly processes. The device does not include power line protection and is intended for single-channel unidirectional transient suppression.</p>
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42,747
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Price on request
42,747
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Littelfuse Inc.
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42,700
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Price on request
42,700
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Analog Devices / Maxim Integrated
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42,691
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Price on request
42,691
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Semtech
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42,560
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Price on request
42,560
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STMicroelectronics
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42,500
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Price on request
42,500
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STMicroelectronics
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42,500
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Price on request
42,500
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On Semiconductor
<p>The CM1205-08CP is an 8-channel ESD protection diode array manufactured by ON Semiconductor. It is designed to protect sensitive electronic components from electrostatic discharge (ESD) events, exceeding the requirements of IEC 61000-4-2 Level 4.</p><p> </p><p>This device offers a reverse standoff voltage of 3.3V and a maximum clamping voltage of 8V. It provides ESD protection of ±25 kV contact discharge per IEC 61000-4-2 and ±30 kV HBM per MIL-STD-883D. The operating temperature range is -40°C to 85°C.</p><p> </p><p>The CM1205-08CP is housed in a 10-WFBGA, WLCSP package with a supplier device package of 10-WLCSP (3.1x1.15). It is surface mount and available in tape and reel packaging with a standard quantity of 3500. The device features OptiGuard coating for improved reliability at assembly.</p><p> </p><p>Typical applications include ESD protection for I/O ports, keypads, and button circuitry in portable devices such as wireless handsets, PDAs, MP3 players, digital cameras, and notebooks. It is also suitable for desktop PCs and other sensitive electronic equipment.</p>
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42,500
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Price on request
42,500
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