TVS Diodes

Transient voltage suppressor diodes, more commonly known as TVS diodes, are used to protect integrated circuits (ICs). TVS diodes protect semiconductors and sensitive components against high transient voltage spikes (overvoltage) and the effects of arcs, EFT, ESD, inductive load switching, and even lightning strikes. RS Components offer an extensive range of TVS diodes from a multitude of brands across the industry, including Bourns, Littelfuse, ON Semiconductor, STMicroelectronics, Taiwan Semiconductor, Vishay, and more.

TVS diodes are offered in both through-hole and surface mount packages and can be unidirectional or bidirectional. Unidirectional TVS diodes will only allow positive or negative voltage, whereas bidirectional diodes can operate at both positive and negative voltages. TVS diodes are able to conduct large currents to the ground due to their construction. They feature a much larger p-n junction cross-sectional area than standard diodes. You can learn more in our TVS diodes guide.

What are the benefits of using transient voltage suppressor diodes?

Transient voltage suppressors respond incredibly quickly to overvoltage events, clamping transient voltages almost immediately. This enables them to protect circuits from the effects of arcing, inductive load switching, EFT (electrical fast transients), the ESD (electrostatic discharge) created by data lines and electronic circuits, and even lightning strikes.

What to consider when choosing a TVS diode?

There are a number of differentiators when choosing a TVS diode, but two key factors to consider are reverse standoff voltage and breakdown voltage. Reverse standoff voltage is the operating voltage that the data or power line should not exceed. Breakdown voltage is the voltage rating at which the TVS diode will provide protection and start conducting current to the ground. This voltage value is normally a little higher than the reverse standoff voltage.

Typical applications of TVS diodes

  • TVS diodes have numerous applications but are primarily used to protect microprocessors
  • MOS memory
  • AC power lines
  • Telecommunication equipment
  • Consumer electronics

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Description Price Diode Configuration Direction Type Maximum Clamping Voltage Minimum Breakdown Voltage Maximum Peak Pulse Current Mounting Type Package Type Maximum Reverse Stand-off Voltage Maximum Reverse Leakage Current Pin Count Peak Pulse Power Dissipation ESD Protection Number of Elements per Chip Minimum Operating Temperature
RS Stock No. 919-6393
Mfr. Part No.1.5KE400CA
£0.497
Each (In a Bag of 600)
Units
Single Bi-Directional 706V 380V 14A Through Hole DO-201 342V 1µA 2 1500W - 1 -65 °C
RS Stock No. 486-4381
Mfr. Part No.1.5KE400CA
£0.94
Each (In a Pack of 5)
Units
Single Bi-Directional 706V 380V 14A Through Hole DO-201 342V 1µA 2 1500W - 1 -65 °C
RS Stock No. 165-3019
Mfr. Part No.CDSOT23-SM712
BrandBourns
£0.486
Each (On a Reel of 3000)
Units
Series Bi-Directional 26V 7.5V 17A Surface Mount SOT-23 12V 20µA 3 400W Yes 2 -55 °C
RS Stock No. 767-3728
Mfr. Part No.CDSOT23-SM712
BrandBourns
£1.031
Each (In a Pack of 10)
Units
Series Bi-Directional 26V 7.5V 17A Surface Mount SOT-23 12V 20µA 3 400W Yes 2 -55 °C
RS Stock No. 124-2373
Mfr. Part No.PESD1CAN,215
BrandNexperia
£0.068
Each (On a Reel of 3000)
Units
Series Bi-Directional 70V 25.4V 3A Surface Mount SOT-23 (TO-236AB) 24V 50nA 3 200W Yes 2 -65 °C
RS Stock No. 508-860
Mfr. Part No.PESD1CAN,215
BrandNexperia
£0.24
Each (In a Pack of 20)
Units
Series Bi-Directional 70V 25.4V 3A Surface Mount SOT-23 (TO-236AB) 24V 50nA 3 200W Yes 2 -65 °C
RS Stock No. 508-462
Mfr. Part No.PESD2CAN,215
BrandNexperia
£0.222
Each (In a Pack of 20)
Units
Series Bi-Directional 41V 26.2V 5A Surface Mount SOT-23 (TO-236AB) 24V 10nA 3 230W Yes 2 -65 °C
RS Stock No. 773-4564
Mfr. Part No.CDSOD323-T05C
BrandBourns
£0.392
Each (In a Pack of 25)
Units
Single Bi-Directional 9.8V 6V 17A Surface Mount SOD-323 5V 5µA 2 350W Yes 1 -55 °C
RS Stock No. 165-3038
Mfr. Part No.CDSOD323-T05C
BrandBourns
£0.417
Each (On a Reel of 3000)
Units
Single Bi-Directional 9.8V 6V 17A Surface Mount SOD-323 5V 5µA 2 350W Yes 1 -55 °C
RS Stock No. 486-4202
Mfr. Part No.1.5KE18CA
£0.556
Each (In a Pack of 5)
Units
Single Bi-Directional 32.5V 17.1V 308A Through Hole DO-201 15.3V 1µA 2 1500W - 1 -65 °C
RS Stock No. 919-6365
Mfr. Part No.1.5KE18CA
£0.279
Each (In a Bag of 600)
Units
Single Bi-Directional 32.5V 17.1V 308A Through Hole DO-201 15.3V 1µA 2 1500W - 1 -65 °C
RS Stock No. 165-2289
Mfr. Part No.1.5KE15CA-E3/54
BrandVishay
£0.376
Each (On a Tape of 1400)
Units
Single Bi-Directional 21.2V 14.3V 70.8A Through Hole 1.5KE 12.8V 1µA 2 1500W - 1 -55 °C
RS Stock No. 637-8337
Mfr. Part No.1.5KE15CA-E3/54
BrandVishay
£0.62
Each (In a Pack of 5)
Units
Single Bi-Directional 21.2V 14.3V 70.8A Through Hole 1.5KE 12.8V 1µA 2 1500W - 1 -55 °C
RS Stock No. 464-255
Mfr. Part No.NUP2105LT1G
£0.237
Each (In a Pack of 20)
Units
Series Bi-Directional 44V 26.2V 8A Surface Mount SOT-23 24V 100nA 3 350W Yes 2 -55 °C
RS Stock No. 102-2281
Mfr. Part No.NUP2105LT1G
£0.075
Each (On a Reel of 3000)
Units
Series Bi-Directional 44V 26.2V 8A Surface Mount SOT-23 24V 100nA 3 350W Yes 2 -55 °C
RS Stock No. 146-0603
Mfr. Part No.SM712.TCT
BrandSemtech
£0.565
Each (On a Reel of 3000)
Units
Series Bi-Directional 26V 13.3V 17A Surface Mount SOT-23 12V 20µA 3 400W Yes 2 -55 °C
RS Stock No. 691-0811
Mfr. Part No.SM712.TCT
BrandSemtech
£1.324
Each (In a Pack of 5)
Units
Series Bi-Directional 26V 13.3V 17A Surface Mount SOT-23 12V 20µA 3 400W Yes 2 -55 °C
RS Stock No. 165-2443
Mfr. Part No.SA24CA-E3
BrandVishay
£0.313
Each (On a Reel of 4000)
Units
Single Bi-Directional 38.9V 26.7V 12.9A Through Hole DO-15 24V 1µA 2 500W - 1 -55 °C
RS Stock No. 637-0692
Mfr. Part No.SA24CA-E3/54
BrandVishay
£0.452
Each (In a Pack of 5)
Units
Single Bi-Directional 38.9V 26.7V 12.9A Through Hole DO-15 24V 1µA 2 500W - 1 -55 °C
RS Stock No. 919-6396
Mfr. Part No.1.5KE36CA
£0.33
Each (In a Bag of 600)
Units
Single Bi-Directional 64.3V 34.2V 156A Through Hole DO-201 30.8V 1µA 2 1500W - 1 -65 °C