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).

TVS diodes are offered in both through hole and surface mount packages. They 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.

What are the benefits of using transient voltage suppressor diodes?

TVS diodes 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, lightning strikes, EFT (electrical fast transients) and the ESD (electrostatic discharge) created by data lines and electronic circuits.

What do I need 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 - This is the operating voltage that the data or power line should not exceed.
  • Breakdown voltage - This 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 high than the reverse standoff voltage

Applications:

TVS diodes have numerous applications but are well suited 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 Mounting Type Package Type Maximum Reverse Stand-off Voltage Pin Count Peak Pulse Power Dissipation Maximum Peak Pulse Current ESD Protection Number of Elements per Chip Minimum Operating Temperature Maximum Operating Temperature
RS Stock No. 687-8231
Mfr. Part No.MMBZ20VALT1G
$0.311
Each (In a Pack of 25)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 -55 °C +150 °C
RS Stock No. 145-3509
Mfr. Part No.MMBZ20VALT1G
$0.042
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 -55 °C +150 °C
RS Stock No. 903-5437
Mfr. Part No.1.5KE16A
$0.138
Each (On a Tape of 1200)
units
Single Uni-Directional 22.5V 15.2V Through Hole DO-201 13.6V 2 1500W 67A - 1 -55 °C +150 °C
RS Stock No. 486-4381
Mfr. Part No.1.5KE400CA
$1.804
Each (In a Pack of 5)
units
Single Bi-Directional 706V 380V Through Hole DO-201 342V 2 1500W 14A - 1 -65 °C +175 °C
RS Stock No. 637-0709
Mfr. Part No.SA30A-E3/54
BrandVishay
$0.756
Each (In a Pack of 5)
units
Single Uni-Directional 48.4V 33.3V Through Hole DO-204AC 30V 2 500W 10A Yes 1 -55 °C +175 °C
RS Stock No. 165-2445
Mfr. Part No.SA30A-E3/54
BrandVishay
$0.556
Each (On a Reel of 4000)
units
Single Uni-Directional 48.4V 33.3V Through Hole DO-204AC 30V 2 500W 10A Yes 1 -55 °C +175 °C
RS Stock No. 919-6393
Mfr. Part No.1.5KE400CA
$0.679
Each (In a Bag of 600)
units
Single Bi-Directional 706V 380V Through Hole DO-201 342V 2 1500W 14A - 1 -65 °C +175 °C
RS Stock No. 638-8637
Mfr. Part No.P6KE33CA-E3/54
BrandVishay
$0.977
Each (In a Pack of 10)
units
Single Bi-Directional 45.7V 31.4V Through Hole DO-15 28.2V 2 600W 13.1A - 1 -55 °C +175 °C
RS Stock No. 165-2455
Mfr. Part No.P6KE33CA-E3
BrandVishay
$0.511
Each (On a Reel of 4000)
units
Single Bi-Directional 45.7V 31.4V Through Hole DO-15 28.2V 2 600W 13.1A - 1 -55 °C +175 °C
RS Stock No. 767-3728
Mfr. Part No.CDSOT23-SM712
BrandBourns
$2.255
Each (In a Pack of 10)
units
Series Bi-Directional 26V 7.5V Surface Mount SOT-23 12V 3 400W 17A Yes 2 -55 °C +150 °C
RS Stock No. 165-3019
Mfr. Part No.CDSOT23-SM712
BrandBourns
$1.038
Each (On a Reel of 3000)
units
Series Bi-Directional 26V 7.5V Surface Mount SOT-23 12V 3 400W 17A Yes 2 -55 °C +150 °C
RS Stock No. 543-8680
Mfr. Part No.P6KE47A
$0.788
Each (In a Pack of 5)
units
Single Uni-Directional 64.8V 44.7V Through Hole DO-15 40.2V 2 600W 9.3A - 1 -65 °C +175 °C
RS Stock No. 166-1770
Mfr. Part No.P6KE47A
$0.30
Each (On a Reel of 4000)
units
Single Uni-Directional 64.8V 44.7V Through Hole DO-15 40.2V 2 600W 9.3A - 1 -65 °C +175 °C
RS Stock No. 543-8719
Mfr. Part No.P6KE120A
$0.79
Each (In a Pack of 5)
units
Single Uni-Directional 165V 114V Through Hole DO-15 102V 2 600W 3.6A - 1 -65 °C +175 °C
RS Stock No. 751-4979
Mfr. Part No.SMAJ15CA-13-F
$0.478
Each (In a Pack of 25)
units
Single Bi-Directional 24.4V 16.7V Surface Mount DO-214AC (SMA) 15V 2 400W 16.4A - 1 -55 °C +150 °C
RS Stock No. 166-2569
Mfr. Part No.P6KE120A
$0.30
Each (On a Reel of 4000)
units
Single Uni-Directional 165V 114V Through Hole DO-15 102V 2 600W 3.6A - 1 -65 °C +175 °C
RS Stock No. 177-5419
Mfr. Part No.TBU-CA025-300-WH
BrandBourns
$1.243
Each (On a Reel of 3000)
units
Single Bi-Directional 250V - Surface Mount DFN 20V 2 - 0.6A - 1 -55 °C +125 °C
RS Stock No. 170-8314
Mfr. Part No.5KASMC18AHM3/57
BrandVishay
$2.356
Each (On a Reel of 850)
units
Single Uni-Directional 29.2V 20V Surface Mount DO-214AB (SMC) 18V 2 5000W 171.2A - 1 -65 °C +185 °C
RS Stock No. 249-050
Mfr. Part No.DALC208SC6
$0.674
Each (In a Pack of 10)
units
Complex Array - - - Surface Mount SOT-23 - 6 - - - 4 -55 °C +150 °C
RS Stock No. 700-2624
Mfr. Part No.RSA6.1ENTR
BrandROHM
$0.478
Each (In a Pack of 5)
units
Common Anode - - - Surface Mount UMD - 5 - - - 4 -55 °C +150 °C
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