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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Littelfuse Inc.
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349,363
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Price on request
349,363
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Littelfuse Inc.
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348,000
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Price on request
348,000
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Littelfuse Inc.
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347,169
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Price on request
347,169
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On Semiconductor
<p>The ESD7471N2T5G is a Zener-type TVS diode designed for ESD protection in space-constrained applications. It features a maximum reverse standoff voltage of 5.3V and an ultra-low typical capacitance of 0.24pF at 1MHz, making it suitable for high-speed signal lines. The device provides IEC61000-4-2 ESD protection up to ±20kV for both contact and air discharge (single strike) and ±8kV for 1000 strikes. It is housed in a 2-XDFN surface mount package (1x0.6mm, SOD-882 equivalent) and supports an operating temperature range of -55°C to 150°C. With a maximum power dissipation of 300mW and thermal resistance of 400°C/W, it is well-suited for RF antenna protection, USB 2.0/3.0, and near-field communication circuits. The part is RoHS3 compliant, Pb-free, and halogen-free.</p>
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346,980
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Price on request
346,980
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Bourns
<p>The Bourns CDSOD323-T05C is a bidirectional transient voltage suppressor (TVS) diode designed to protect sensitive electronics from electrostatic discharge (ESD) and other voltage transients. It features a reverse standoff voltage of 5.0V and a minimum breakdown voltage of 6.0V at 1mA. The device provides a typical clamping voltage of 18.3V at a peak pulse current of 17A (8/20µs waveform) and can handle 350W of peak pulse power.</p><p> </p><p>This TVS diode is housed in a compact, surface-mount SOD-323 package (SC-76), making it suitable for space-constrained designs. It operates over a junction temperature range of -55°C to +150°C. The part is RoHS compliant and lead-free.</p><p> </p><p>Typical applications include ESD protection for cellular phones, PDAs, notebooks, digital cameras, MP3 players, GPS devices, and USB interfaces. The bidirectional configuration allows protection of lines that carry both positive and negative signals.</p>
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346,479
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Price on request
346,479
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Littelfuse Inc.
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345,620
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Price on request
345,620
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On Semiconductor
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345,341
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Price on request
345,341
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Diodes Incorporated
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340,020
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Price on request
340,020
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STMicroelectronics
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340,000
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Price on request
340,000
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STMicroelectronics
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338,839
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Price on request
338,839
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Nexperia USA Inc.
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338,188
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Price on request
338,188
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Diodes Incorporated
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334,020
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Price on request
334,020
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Diodes Incorporated
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333,464
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Price on request
333,464
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On Semiconductor
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332,709
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Price on request
332,709
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Nexperia USA Inc.
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331,020
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Price on request
331,020
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STMicroelectronics
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330,073
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Price on request
330,073
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STMicroelectronics
<p>The ESDAXLC18-1BF4 is a bidirectional TVS diode manufactured by STMicroelectronics, designed for general purpose ESD protection. It features a reverse standoff voltage of 18V and a maximum clamping voltage of 20V, providing robust protection for sensitive electronic circuits.</p><p> </p><p>With a peak pulse power dissipation of 50W and a peak pulse current rating of 2.2A (8/20 µs waveform), this device is suitable for protecting data lines and I/O ports from electrostatic discharge and transient overvoltage events. The typical capacitance is 1.6 pF at 1 MHz, making it appropriate for high-speed signal lines.</p><p> </p><p>The device is housed in a compact 0201 (0603 Metric) surface mount package, ideal for space-constrained designs. It operates over a junction temperature range of -40°C to 150°C and is RoHS3 compliant with MSL 1 (unlimited) moisture sensitivity.</p>
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330,000
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Price on request
330,000
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Texas Instruments
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329,414
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Price on request
329,414
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On Semiconductor
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327,910
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Price on request
327,910
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STMicroelectronics
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327,176
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Price on request
327,176
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On Semiconductor
<p>The ESD8451MUT5G is a low capacitance ESD protection diode from On Semiconductor, designed to protect high-speed data lines from electrostatic discharge. With a typical capacitance of only 0.2pF at 1MHz and a maximum I/O-to-GND capacitance of 0.30pF, this device minimizes signal degradation on high-frequency interfaces.</p><p> </p><p>Key electrical characteristics include a reverse working voltage of 3.3V maximum, a breakdown voltage range of 5.5V to 8.3V at 1mA, and low clamping voltages: 13.7V typical at 3.7A (8/20µs pulse) and 11.0V typical at 8A (TLP). The diode provides ±15kV contact and ±15kV air discharge protection per IEC 61000-4-2, meeting Level 4 requirements. It also features a low reverse leakage current of 500nA maximum at 3.3V.</p><p> </p><p>This bidirectional Zener TVS diode is housed in a compact X3DFN2 (0.6x0.3) surface mount package, also known as 2-X3DFN (0.6x0.3) (0201). It is suitable for protecting USB 3.0, MHL 2.0, and eSATA interfaces, as well as other high-speed data lines in portable electronics.</p><p> </p><p>The device is Pb-Free, Halogen Free/BFR Free, and RoHS3 compliant. An automotive qualified variant (SZESD8451) is also available with AEC-Q101 certification and PPAP capability.</p>
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324,622
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Price on request
324,622
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On Semiconductor
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323,806
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Price on request
323,806
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Bourns
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322,950
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Price on request
322,950
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STMicroelectronics
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322,652
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Price on request
322,652
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Nexperia USA Inc.
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321,020
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Price on request
321,020
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On Semiconductor
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320,008
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Price on request
320,008
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On Semiconductor
<p>The ESD5481MUT3G is a bidirectional TVS diode manufactured by On Semiconductor. This component is designed for general-purpose circuit protection applications and is classified as a Zener-type TVS diode with a single bidirectional channel.</p><p> </p><p>Electrically, the device features a typical reverse standoff voltage of 5 V and a maximum clamping voltage of 15 V. It can handle a peak pulse current of 2 A under an 8/20 µs waveform. The typical capacitance is 12 pF at 1 MHz, and the operating temperature range spans from -55°C to 150°C. The device does not include power line protection.</p><p> </p><p>The ESD5481MUT3G is offered in a 0201 (0603 Metric) surface-mount package, with supplier device package 2-X3DFN (0.6x0.3) (0201). It is rated with MSL 1 (unlimited) and complies with RoHS3 and REACH requirements. The mounting type is surface mount, making it suitable for automated assembly in compact designs.</p>
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320,000
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Price on request
320,000
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On Semiconductor
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320,000
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Price on request
320,000
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On Semiconductor
<p>The 1SMA12AT3G is a Zener-type unidirectional transient voltage suppression (TVS) diode manufactured by On Semiconductor. It is designed to protect sensitive electronics from voltage transients and surges.</p><p> </p><p>This device offers a reverse standoff voltage of 12V and a clamping voltage of 19.9V at a peak pulse current of 20.1A. It can handle 400W of peak pulse power (10/1000µs waveform). The capacitance is 925pF at 1MHz. It is not intended for power line protection.</p><p> </p><p>The 1SMA12AT3G is housed in a surface-mount DO-214AC (SMA) package. It operates over a temperature range of -65°C to 150°C. It is RoHS3 compliant with MSL level 1 (unlimited).</p>
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319,228
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Price on request
319,228
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On Semiconductor
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318,471
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Price on request
318,471
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Diodes Incorporated
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317,938
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Price on request
317,938
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Littelfuse Inc.
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317,485
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Price on request
317,485
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STMicroelectronics
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316,822
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Price on request
316,822
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On Semiconductor
<p>The ESD5Z2.5T1G is a unidirectional Zener TVS diode from onsemi, designed to protect sensitive electronics from electrostatic discharge and transient voltage events. Key electrical characteristics include a reverse stand-off voltage of 2.5 V, a clamping voltage of 10.9 V, and a peak pulse current of 11 A (8/20 µs pulse). The device can handle 240 W of peak pulse power under the same pulse condition. Its capacitance is 145 pF at 1 MHz, and the typical response time is less than 1 ns.</p><p> </p><p>The ESD5Z2.5T1G offers robust ESD protection, meeting IEC 61000-4-2 Level 4 with ±30 kV contact and air discharge. It also withstands 16 kV Human Body Model and 400 V Machine Model discharges. EFT immunity is rated at 40 A per IEC 61000-4-4. The part is suitable for general-purpose ESD protection in portable devices, cellular phones, digital cameras, and power supplies.</p><p> </p><p>The device is housed in a SOD-523 surface mount package measuring 1.20 mm x 0.80 mm x 0.7 mm, with 100% matte tin lead finish. It is RoHS3 compliant, Pb-free, and rated MSL Level 1. Standard packaging is tape and reel with 3000 pieces per reel.</p>
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316,631
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Price on request
316,631
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STMicroelectronics
<p>The ESDARF02-1BU2CK is a Zener-type TVS diode from STMicroelectronics designed for general purpose ESD protection. It features a reverse standoff voltage of 3.6V and a clamping voltage of 12V. The device can handle a peak pulse current of 1A under an 8/20 µs waveform and offers a peak pulse power rating of 20W. With an ultra-low typical capacitance of 0.2 pF (measured at 200 MHz to 3 GHz), this diode is suitable for high-speed signal line protection. It is housed in a compact 0201 (0603 metric) surface mount package and operates over a junction temperature range of -40°C to 150°C. The part is RoHS3 compliant and REACH unaffected, with an MSL of 1 (unlimited).</p>
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315,000
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Price on request
315,000
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Vishay Dale
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314,955
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Price on request
314,955
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On Semiconductor
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314,691
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Price on request
314,691
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On Semiconductor
<p>The ESD5Z7.0T1G is a unidirectional Zener TVS diode from the ESD5Z series by ON Semiconductor. It is designed to protect voltage-sensitive components from electrostatic discharge (ESD) and transient voltage events. With a nominal stand-off voltage of 7.0V and a maximum clamping voltage of 22.7V, it provides effective voltage limiting in low-voltage circuits. The diode can handle 200W peak pulse power (8/20µs pulse) and a peak pulse current of 8.8A. It features a fast response time of less than 1 ns, low leakage, and a typical capacitance of 65 pF at 1 MHz. The device meets IEC 61000-4-2 Level 4 ESD protection and has an HBM ESD rating greater than 16 kV. The ESD5Z7.0T1G is housed in a compact SOD-523 surface mount package (also known as SC-79). It supports a wide operating temperature range from -55°C to 150°C. The device is RoHS3 compliant and Pb-free, with MSL 1 rating. It is suitable for general purpose ESD protection in applications such as cellular phones, portable devices, digital cameras, and power supplies where board space is limited.</p>
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314,020
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Price on request
314,020
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On Semiconductor
<p>The ESD7351XV2T5G is a unidirectional TVS diode from onsemi, part of the ESD7351 series, designed to protect sensitive voltage components from electrostatic discharge (ESD) and transient voltage events. It features a reverse stand-off voltage of 3.3 V and a maximum clamping voltage of 10 V at a peak pulse current of 3 A.</p><p> </p><p>This device offers ultra-low capacitance of 0.43 pF typical and 0.6 pF maximum, making it suitable for high-frequency applications such as RF antenna lines and USB 2.0 high-speed data lines. It provides IEC 61000-4-2 Level 4 ESD protection with ±20 kV contact and air discharge ratings.</p><p> </p><p>The ESD7351XV2T5G is housed in a surface-mount SOD-523 package (also known as SC-79) and operates over a junction temperature range of -55°C to 150°C. It is Pb-Free, Halogen Free/BFR Free, and RoHS Compliant.</p>
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310,195
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Price on request
310,195
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STMicroelectronics
<p>The ESDA6V1P6 is a Zener-type TVS diode array designed for general-purpose circuit protection. It features a typical reverse standoff voltage of 3V and a peak pulse power rating of 150W. The device integrates 4 unidirectional channels, making it suitable for protecting multiple signal lines in a compact footprint.</p><p> </p><p>This component is surface-mount and offered in SOT-563 or SOT-666 packages, with the supplier device package specified as SOT-666IP. It operates over a junction temperature range of -40°C to 150°C. Power line protection is not provided, indicating it is intended for signal line protection rather than power supply rails.</p><p> </p><p>The ESDA6V1P6 is RoHS3 compliant and REACH unaffected, with an MSL rating of 1 (unlimited). It is commonly used in applications requiring ESD or transient voltage suppression for general-purpose electronics.</p>
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310,020
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Price on request
310,020
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Bel Fuse
<p>The Bel Fuse 0ZCG0160BF2C is a polymeric PTC resettable fuse from the 0ZCG series. It is designed for overcurrent protection in electronic circuits. The device has a hold current of 1.6 A and a trip current of 3.2 A, with a maximum voltage rating of 16 V. It can handle up to 100 A fault current and dissipates 1.0 W of power. The typical time to trip is 8.0 seconds at 1.0 A. The resistance ranges from 0.030 ohms minimum to 0.100 ohms maximum. The operating temperature range is -40°C to 85°C. This fuse is surface mountable in a 1812 (4532 metric) concave package. It is RoHS, lead-free, and halogen-free compliant, and meets AEC-Q200 automotive qualification. Applications include overcurrent protection in automotive electronics, industrial controls, and consumer devices where resettable protection is required.</p>
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310,000
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Price on request
310,000
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Texas Instruments
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308,128
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Price on request
308,128
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Bourns
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306,500
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Price on request
306,500
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STMicroelectronics
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305,000
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Price on request
305,000
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On Semiconductor
<p>The CM1230-08CP is an 8-channel low-capacitance ESD protection array from On Semiconductor, part of the CM1230 family. Each channel uses a rail-to-rail steering architecture with a pair of ESD diodes and an integrated Zener diode between the positive and negative supply rails, ensuring robust protection without requiring an external bypass capacitor. The device provides ESD protection per IEC 61000-4-2 Level 4 with ±8 kV contact discharge and ±15 kV air discharge, as well as >±15 kV HBM per MIL-STD-883. Key electrical specifications include a reverse standoff voltage of 3.3V, typical clamping voltage of 9.8V, and peak pulse current of 1A (8/20 µs). With an ultra-low typical capacitance of 0.8 pF per channel (I/O to GND) and capacitance difference of 0.15 pF between channels, it minimizes signal degradation on high-speed interfaces.</p><p> </p><p>This device is well-suited for next-generation wireless handsets, LCD display and camera interfaces, and other high-speed serial interface solutions where capacitive loading tolerance is below 1.5 pF. It is available in a compact 10-WLCSP package (2.46x0.96 mm) with surface mount mounting and an operating temperature range of -40°C to 85°C. The part is RoHS3 compliant, lead-free, and has an MSL rating of 1 (unlimited).</p>
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304,600
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Price on request
304,600
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Diodes Incorporated
<p>The DESD5V0U1BA-7 is a low capacitance bidirectional TVS diode from Diodes Incorporated designed for ESD protection in sensitive electronic circuits. It provides ESD protection per IEC 61000-4-2 with contact discharge capability of ±10kV. The device features a reverse standoff voltage of 5V and a typical clamping voltage of 7.2V at 3A peak pulse current (8/20μs waveform).</p><p> </p><p>With a typical channel input capacitance of only 2.9pF at 1MHz, this diode is well-suited for high-speed data line protection where signal integrity is critical. The dynamic impedance is 0.3Ω typical (TLP, 20A, 100ns), and the maximum differential resistance is 100Ω at 1mA. Leakage current is typically 5nA at 5V reverse standoff.</p><p> </p><p>The device is housed in a surface mount SOD-323 package (SC-76 case) and is rated for operation from -65°C to +150°C. Power dissipation is 250mW on standard FR-4 PCB with 2oz copper. The part is fully RoHS3 compliant, lead-free, halogen and antimony free, and has MSL Level 1 (unlimited) moisture sensitivity.</p>
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304,020
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Price on request
304,020
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Vishay Dale
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301,770
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Price on request
301,770
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Bourns
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301,500
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Price on request
301,500
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STMicroelectronics
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301,020
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Price on request
301,020
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Diodes Incorporated
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301,020
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Price on request
301,020
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Showing 301-350 of 302,022 products