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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On Semiconductor
<p>The ESD7501MUT5G from On Semiconductor is a micro-packaged ESD protection diode designed to protect voltage sensitive components from electrostatic discharge (ESD) and transient voltage events. It offers excellent clamping capability, low capacitance (0.45 pF typical), low leakage current (1.0 µA maximum at 5 V), and fast response time, making it ideal for high-frequency designs where board space is critical.</p><p> </p><p>Key electrical specifications include a reverse standoff voltage of 5.0 V, a minimum breakdown voltage of 5.5 V at 1 mA, and clamping voltages ranging from 8.4 V to 11.5 V depending on peak pulse current. The device meets IEC 61000-4-2 Level 4 ESD protection with ±16 kV contact and air discharge ratings. It is also Pb-Free, Halogen Free/BFR Free, and RoHS compliant.</p><p> </p><p>The ESD7501MUT5G is housed in a compact X3DFN2 package (Case 152AF) with dimensions 0.60 mm x 0.30 mm and a body height of 0.3 mm, suitable for surface mount assembly. It is supplied in tape and reel packaging with a standard quantity of 15,000 pieces. Typical applications include USB 2.0/3.0, MHL 2.0, and eSATA interfaces, where low capacitance and high ESD robustness are required.</p>
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557,353
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Price on request
557,353
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Littelfuse Inc.
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555,000
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Price on request
555,000
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STMicroelectronics
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542,565
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Price on request
542,565
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Diodes Incorporated
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541,020
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Price on request
541,020
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Diodes Incorporated
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541,020
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Price on request
541,020
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Diodes Incorporated
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538,601
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Price on request
538,601
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Diodes Incorporated
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533,906
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Price on request
533,906
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STMicroelectronics
<p>The ESDALC6V1P6 from STMicroelectronics is a monolithic quad low capacitance Transil array designed for electrostatic discharge (ESD) protection on up to four lines. It is housed in a compact SOT-666IP surface mount package, ideal for space-constrained PCB designs.</p><p> </p><p>Key electrical specifications include a reverse stand-off voltage of 3V, a breakdown voltage range of 6.1V to 7.2V (at 1mA), and a typical diode capacitance of 12pF at 0V. The device offers a peak pulse power dissipation of 30W (8/20µs pulse) and a low leakage current of less than 0.5µA at 3V. ESD protection levels comply with IEC61000-4-2 (air discharge ±15kV, contact ±8kV) and MIL STD 883 (HBM ±25kV).</p><p> </p><p>The array integrates four unidirectional TVS channels with a common ground, making it suitable for protecting symmetrical signal lines in computers, printers, communication systems, and video equipment. The device operates over a temperature range of -40°C to +125°C and is RoHS3 compliant.</p>
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528,029
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Price on request
528,029
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Littelfuse Inc.
<p>The 1812L150/24MR is a polymeric PTC resettable fuse from Littelfuse's 1812L series. It provides overcurrent protection with a hold current of 1.5 A and a trip current of 3.0 A at 24 VDC maximum. The device can interrupt up to 100 A and has a typical power dissipation of 0.8 W. Time to trip is 1.5 seconds under fault conditions. Initial resistance is 0.04 Ω, rising to 0.12 Ω after tripping.</p><p> </p><p>This surface mount component is housed in a compact 1812 (4532 Metric) concave package measuring 4.55 mm x 3.24 mm x 1.80 mm. It operates over a temperature range of -40°C to 85°C and is AEC-Q200 qualified for automotive applications. The part is RoHS3 compliant, REACH unaffected, and has an MSL rating of 1 (unlimited).</p><p> </p><p>Typical applications include USB peripheral protection, PCI card overcurrent protection, and game console port protection. The resettable nature eliminates the need for fuse replacement after a fault clears.</p>
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527,256
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Price on request
527,256
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Bourns
<p>The Bourns CDSOT23-T12C is a bidirectional transient voltage suppressor (TVS) diode designed to protect sensitive electronics from voltage transients and ESD events. This device features a 12V maximum reverse standoff voltage and a minimum breakdown voltage of 13.3V at 1mA. It provides a maximum clamping voltage of 25.9V when subjected to a 21A peak pulse current (8/20µs waveform), delivering 500W of peak pulse power.</p><p> </p><p>Meeting IEC 61000-4-2 ESD requirements, the CDSOT23-T12C withstands contact discharge of 8kV and air discharge of 15kV, with a maximum capability of 30kV for both. The typical capacitance is 90pF at 0V and 1MHz, making it suitable for high-speed signal line protection. Maximum leakage current at the working voltage is only 2µA, ensuring minimal power loss.</p><p> </p><p>Packaged in a compact SOT23-3 surface mount format, the device operates over a temperature range of -55°C to 150°C. It is RoHS3 compliant and suitable for automated assembly, making it a reliable choice for circuit protection in portable and space-constrained designs. The bidirectional configuration allows protection of circuits with symmetric voltage requirements.</p>
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525,231
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Price on request
525,231
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Diodes Incorporated
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524,008
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Price on request
524,008
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Nexperia USA Inc.
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517,020
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Price on request
517,020
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Renesas
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516,571
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Price on request
516,571
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Vishay Dale
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516,571
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Price on request
516,571
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Nexperia USA Inc.
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516,020
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Price on request
516,020
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Littelfuse Inc.
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516,000
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Price on request
516,000
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STMicroelectronics
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513,520
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Price on request
513,520
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STMicroelectronics
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511,052
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Price on request
511,052
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Vishay Dale
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505,717
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Price on request
505,717
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Diodes Incorporated
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501,020
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Price on request
501,020
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STMicroelectronics
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499,061
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Price on request
499,061
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Vishay Dale
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495,292
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Price on request
495,292
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STMicroelectronics
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492,582
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Price on request
492,582
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On Semiconductor
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490,000
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Price on request
490,000
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On Semiconductor
<p>The ESD7321MUT5G is a low capacitance ESD protection diode designed to protect high speed data lines from ESD. It offers a maximum capacitance of 0.5 pF from I/O to ground, making it suitable for high speed interfaces. The device provides protection for IEC 61000-4-2 Level 4 ESD strikes with ±15kV contact and air discharge ratings. It has a reverse working voltage of 7V and a clamping voltage of 18V at 8A peak pulse current. The breakdown voltage is 8.0V at 1mA test current. The device is housed in a 2-X3DFN (0.62x0.32) surface mount package, with a 0201 (0603 metric) footprint. It is Pb-Free, Halogen Free/BFR Free, and RoHS compliant. Typical applications include USB 3.x, MHL 2.0, SATA/SAS, and PCI Express. The operating temperature range is -55°C to +125°C.</p>
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480,000
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Price on request
480,000
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Vishay Dale
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477,883
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Price on request
477,883
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Vishay Dale
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477,020
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Price on request
477,020
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Vishay Dale
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476,200
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Price on request
476,200
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Diodes Incorporated
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472,299
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Price on request
472,299
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STMicroelectronics
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469,000
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Price on request
469,000
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STMicroelectronics
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466,656
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Price on request
466,656
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On Semiconductor
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464,000
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Price on request
464,000
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Diodes Incorporated
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461,020
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Price on request
461,020
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Diodes Incorporated
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457,020
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Price on request
457,020
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Littelfuse Inc.
<p>The Littelfuse 1206SFS100F/63-2 is a surface mount slow-blow chip fuse designed for overcurrent protection in circuits that experience high inrush currents. Rated at 1A with a maximum DC voltage of 63V, it offers a breaking capacity of 50A at rated voltage. The time-delay (slow-blow) response prevents nuisance openings during startup surges.</p><p> </p><p>Housed in a standard 1206 (3216 Metric) package with dimensions of 3.20mm x 1.60mm x 0.97mm, this fuse supports surface mount assembly and operates over a temperature range of -55°C to 125°C. Electrical characteristics include a nominal cold DCR of 0.360 Ω and a melting I²t of 0.11 A²sec, providing predictable performance for design calculations.</p><p> </p><p>Typical applications include input power ports, Power over Ethernet (PoE) circuits, small motors, portable electronics, and POL converter protection. The monolithic multilayer design enhances arc suppression and high-temperature performance. The component is RoHS3 compliant, halogen free, and ELV compliant, with UL approval.</p>
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455,285
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Price on request
455,285
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Vishay Dale
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454,296
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Price on request
454,296
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Bourns
<p>The Bourns CDSC706-0504C is a surface mount TVS diode array designed for protecting high-speed data ports. It features 4 unidirectional channels with a steering (rail-to-rail) configuration. The device offers a reverse standoff voltage of 5V and a minimum breakdown voltage of 6V. Clamping voltage is 9V at 5A (8/20µs pulse). Peak pulse current is 6.5A (8/20µs).</p><p> </p><p>This TVS array provides excellent ESD protection, meeting IEC 61000-4-2 standards with 18kV air discharge and 14kV contact discharge on I/O pins, and 30kV both air and contact on VCC to GND. Input capacitance is low at 1.6pF (max), making it suitable for high-speed data lines. Channel-to-channel capacitance is 0.14pF (max). Maximum leakage current is 5µA.</p><p> </p><p>The device is housed in a compact SC-70-6 package (also known as 6-TSSOP, SC-88, SOT-363). It operates over a temperature range of -55°C to +85°C and is lead-free as per the datasheet. It is intended for general purpose applications requiring ESD and surge protection.</p>
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454,113
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Price on request
454,113
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Vishay Dale
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452,000
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Price on request
452,000
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Bourns
<p>The Bourns CDSOD323-T12SC is a bidirectional transient voltage suppressor diode designed for ESD and surge protection in portable electronics. It features a working peak voltage of 12V and a minimum breakdown voltage of 13.3V at 1mA. The device provides a maximum clamping voltage of 19V at 1A and a typical clamping voltage of 29.5V at the peak pulse current of 14A (8/20µs waveform).</p><p> </p><p>With a peak pulse power rating of 400W (bidirectional, 8/20µs) and ESD protection up to 30kV (contact and air discharge per IEC 61000-4-2), this diode is suitable for protecting sensitive circuits in consumer and industrial applications. The maximum leakage current is 1µA at the working voltage, and typical capacitance is 50pF at 0V and 1MHz.</p><p> </p><p>The device is housed in a surface mount SOD-323 (SC-76) package and operates over a temperature range of -55°C to 150°C. It is lead-free and RoHS compliant as standard.</p>
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449,443
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Price on request
449,443
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On Semiconductor
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445,775
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Price on request
445,775
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Nexperia USA Inc.
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445,585
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Price on request
445,585
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Texas Instruments
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445,449
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Price on request
445,449
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Infineon Technologies
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445,400
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Price on request
445,400
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STMicroelectronics
<p>The ESDA14V2LY is a Zener-type TVS diode from STMicroelectronics designed for automotive applications. It provides transient voltage suppression with a reverse standoff voltage of 12V and a maximum clamping voltage of 21V at 14A peak pulse current (8/20µs waveform). The device can handle up to 300W of peak pulse power, making it suitable for protecting sensitive circuits from ESD and other voltage transients.</p><p> </p><p>This component integrates two unidirectional TVS channels in a single SOT-23-3 surface mount package. It is rated for an operating temperature range of -40°C to 150°C (junction). The package is also available as TO-236-3 and SC-59 alternatives. Power line protection is not provided, as the device is intended for signal line protection.</p><p> </p><p>The ESDA14V2LY is RoHS3 compliant, REACH unaffected, and has an MSL rating of 1 (unlimited). It is commonly used in automotive electronic systems where reliable ESD protection for two independent signal lines is required. The surface mount package allows for automated assembly in high-volume production.</p>
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444,000
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Price on request
444,000
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Diodes Incorporated
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443,851
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Price on request
443,851
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Littelfuse Inc.
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440,000
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Price on request
440,000
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Vishay Dale
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439,770
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Price on request
439,770
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STMicroelectronics
<p>The ESDA6V1SC6 is a 400W Zener-type transient voltage suppression (TVS) diode from STMicroelectronics, designed for general purpose overvoltage and ESD protection. It features a reverse standoff voltage of 5.25V and a peak pulse power dissipation of 400W. This device integrates 4 unidirectional channels in a single compact SOT-23-6 surface-mount package, making it suitable for protecting multiple data or signal lines in space-constrained designs. It operates over a temperature range of -40°C to 125°C and is RoHS3 and REACH compliant. Power line protection is not provided; the device is intended for signal line protection applications.</p>
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433,592
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Price on request
433,592
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STMicroelectronics
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432,157
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Price on request
432,157
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Diodes Incorporated
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430,161
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Price on request
430,161
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