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 | |
|---|---|---|---|
Diodes Incorporated
<p>The DESD18VS1BLP3-7 is a bidirectional TVS diode from Diodes Incorporated designed to protect sensitive electronics from electrostatic discharge (ESD) damage. It features a reverse standoff voltage of 18V and a clamping voltage of 23V, with a typical capacitance of 0.3pF at 1MHz. The device offers ESD protection per IEC 61000-4-2 with air discharge capability of ±16kV and contact discharge of ±12kV.</p><p> </p><p>This TVS diode is housed in an ultra-small X2-DFN0603-2 surface mount package, making it suitable for space-constrained portable applications such as cellular phones, digital cameras, and MP3 players. The package is molded plastic with UL 94V-0 flammability rating and matte tin termination. It is RoHS3 compliant, lead-free, and halogen and antimony free.</p><p> </p><p>The device has a peak pulse power rating of 30W (8/20µs) and a peak pulse current of 1A (8/20µs). It operates over a junction temperature range of -65°C to 150°C and has a power dissipation of 250mW. Moisture sensitivity is Level 1 per J-STD-020.</p>
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28,525
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Price on request
28,525
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Littelfuse Inc.
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28,500
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Price on request
28,500
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STMicroelectronics
<p>The 1.5KE68CA is a bidirectional transient voltage suppression (TVS) diode designed to protect sensitive electronic equipment from voltage transients induced by lightning and other transient voltage events. It offers a peak pulse power dissipation of 1500W (10/1000µs waveform) and features a reverse standoff voltage of 58.1V, a minimum breakdown voltage of 64.6V, and a maximum clamping voltage of 121V at the peak pulse current of 83A.</p><p> </p><p>This device is housed in a rugged DO-201 (DO-201AA) axial leaded package suitable for through-hole mounting. It operates over a junction temperature range of -55°C to 175°C and has a fast response time of typically less than 1 ps. The TVS diode is ideal for general-purpose applications including I/O interface protection, VCC bus protection, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic equipment.</p><p> </p><p>The 1.5KE68CA is RoHS compliant and halogen free, with a terminal finish of matte tin (Sn). It is also rated for ESD protection per IEC 61000-4-2 (30kV air/contact) and has a flammability rating of V-0.</p>
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28,489
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Price on request
28,489
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On Semiconductor
<p>The ESD9R3.3ST5G is a unidirectional TVS diode from On Semiconductor designed for ESD protection in ultra-low current applications. It provides a working peak reverse voltage of 3.3V and a clamping voltage of 7.8V. The device features ultra-low leakage current of less than 1nA, making it suitable for human body sensors and other power-sensitive circuits.</p><p> </p><p>With a typical capacitance of 0.5pF at 1MHz, the ESD9R3.3ST5G is ideal for high-speed data lines. It offers ESD protection per IEC 61000-4-2: ±10kV contact, ±15kV air, and ±16kV HBM. The response time is less than 1.0ns, ensuring rapid clamping during ESD events.</p><p> </p><p>The device is packaged in a small SOD-923 surface-mount package with body dimensions of 1.00mm x 0.60mm and height of 0.4mm. Maximum power dissipation is 150mW on FR-5 board at 25°C. Operating temperature range is -55°C to 125°C. The device is Pb-free and Halogen-free, meeting MSL 1 requirements.</p>
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28,447
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Price on request
28,447
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Texas Instruments
<p>The ESD224DQAR is a Zener-type TVS diode from Texas Instruments designed to protect high-speed data lines from electrostatic discharge (ESD) and other transient overvoltage events. It has a reverse standoff voltage of 3.6V typical and a maximum clamping voltage of 14V at a peak pulse current of 2A (8/20µs). The diode can handle a peak pulse power of 17W. It integrates four bidirectional channels, making it suitable for protecting differential signal pairs in interfaces such as Ethernet, HDMI, and USB. The ultra-low capacitance of 0.5pF at 1MHz ensures minimal signal degradation on high-speed lines. The device is surface mount and comes in a 10-UFDFN package, also designated as 10-USON (2.5x1 mm). It operates over a temperature range of -40°C to 125°C. Note that this component does not include power line protection; it is intended for data line protection.</p>
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28,419
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Price on request
28,419
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Kyocera AVX
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28,360
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Price on request
28,360
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Nexperia USA Inc.
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28,186
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Price on request
28,186
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On Semiconductor
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28,136
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Price on request
28,136
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STMicroelectronics
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28,104
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Price on request
28,104
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Vishay Dale
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28,020
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Price on request
28,020
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Vishay Dale
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28,020
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Price on request
28,020
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Diodes Incorporated
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28,020
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Price on request
28,020
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Diodes Incorporated
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28,020
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Price on request
28,020
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Nexperia USA Inc.
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28,020
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Price on request
28,020
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Diodes Incorporated
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28,008
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Price on request
28,008
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Kyocera AVX
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28,002
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Price on request
28,002
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Vishay Dale
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27,915
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Price on request
27,915
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Littelfuse Inc.
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27,850
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Price on request
27,850
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On Semiconductor
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27,805
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Price on request
27,805
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Littelfuse Inc.
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27,798
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Price on request
27,798
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STMicroelectronics
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27,732
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Price on request
27,732
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STMicroelectronics
<p>The DSL03-024SC6 is a Zener-type TVS diode from STMicroelectronics designed for general purpose circuit protection. It offers a maximum clamping voltage of 55V and can handle peak pulse currents up to 16A (8/20µs waveform). The device integrates 4 unidirectional channels, making it suitable for protecting multiple lines in a compact design.</p><p> </p><p>This TVS diode is surface-mountable in a SOT-23-6 package, enabling space-efficient PCB layouts. It operates over a temperature range of -40°C to 125°C and is rated for power line protection applications. The component is RoHS3 compliant and has an MSL of 1 (unlimited).</p>
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27,689
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Price on request
27,689
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On Semiconductor
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27,500
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Price on request
27,500
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STMicroelectronics
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27,500
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Price on request
27,500
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Littelfuse Inc.
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27,250
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Price on request
27,250
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Littelfuse Inc.
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27,060
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Price on request
27,060
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On Semiconductor
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27,000
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Price on request
27,000
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Infineon Technologies
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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Diotec Semiconductor
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27,000
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Price on request
27,000
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Bel Fuse
<p>The 0ZRN0070FF1E is a polymeric PTC resettable fuse from Bel Fuse, designed for overcurrent protection in a variety of applications. It is rated for a maximum voltage of 30V and a hold current of 700mA, with an initial resistance of 800 mΩ and a typical trip time of 3.2 seconds. The device operates over a wide temperature range of -40°C to 125°C and is AEC-Q200 qualified, making it suitable for automotive environments.</p><p> </p><p>The fuse is housed in a radial disc package with through-hole mounting, featuring a lead spacing of 5.10mm. Its compact dimensions (6.90mm length, 3.00mm width, 10.80mm height) allow for easy integration into circuit boards. The polymeric PTC technology provides resettable protection, automatically returning to low resistance after the fault is cleared.</p><p> </p><p>Typical applications include overcurrent protection in automotive electronics, industrial control systems, battery protection circuits, and power supply outputs. The AEC-Q200 rating ensures reliability under automotive stress conditions.</p>
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27,000
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Price on request
27,000
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On Semiconductor
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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On Semiconductor
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27,000
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Price on request
27,000
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On Semiconductor
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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STMicroelectronics
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27,000
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Price on request
27,000
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Vishay Dale
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27,000
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Price on request
27,000
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Diodes Incorporated
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26,970
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Price on request
26,970
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Littelfuse Inc.
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26,914
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Price on request
26,914
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On Semiconductor
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26,835
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Price on request
26,835
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On Semiconductor
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26,830
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Price on request
26,830
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Littelfuse Inc.
<p>The Littelfuse 370 Series 37002000430 is a sub-miniature TR5 fast-acting fuse designed for board mount applications. Rated at 200 mA with a voltage rating of 250 VAC, it provides reliable overcurrent protection in a compact radial through-hole package (8.50mm x 8.00mm).</p><p> </p><p>The fuse features a nominal cold resistance of 1.69 Ω, a maximum voltage drop of 465 mV at rated current, and a maximum power dissipation of 190 mW at 1.5 times rated current. The melting I²t is 0.03 A²s, indicating a fast response suitable for protecting sensitive components.</p><p> </p><p>This part is approved by CCC, cURus, SEMKO, and VDE, and meets RoHS and halogen-free requirements. It is suitable for use in battery chargers, consumer electronics, power supplies, and industrial controllers within an operating temperature range of -40°C to 85°C.</p>
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26,809
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Price on request
26,809
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Nexperia USA Inc.
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26,760
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Price on request
26,760
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Würth Elektronik
<p>The 820542511 is a standard WE-VD series metal oxide varistor (MOV) from Würth Elektronik, housed in a Disc 14mm through-hole package. It provides overvoltage protection with a typical varistor voltage of 390V and a maximum AC voltage rating of 250V. The device can handle surge currents up to 4.5kA and absorb 120J of energy, making it suitable for transient voltage suppression in power supply and industrial applications.</p><p> </p><p>This varistor operates over a temperature range of -40°C to 125°C and has a typical capacitance of 460pF at 1kHz. The through-hole mounting allows for reliable soldering on printed circuit boards. The part is marked as RoHS3 compliant and REACH unaffected, though these compliance claims are unverified.</p>
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26,652
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Price on request
26,652
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On Semiconductor
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26,622
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Price on request
26,622
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Vishay Dale
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26,585
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Price on request
26,585
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