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. 919-6377
Mfr. Part No.1.5KE24CA
$0.591
Each (In a Bag of 600)
units
Single Bi-Directional 42.8V 22.8V Through Hole DO-201 20.5V 2 1500W 234A - 1 -65 °C +175 °C
RS Stock No. 146-0854
Mfr. Part No.MMBZ6V8AL,215
BrandNexperia
$0.061
Each (On a Reel of 3000)
units
Dual Uni-Directional 9.6V 6.46V Surface Mount SOT-23 4.5V 3 24W 2.5A Yes 2 -55 °C +150 °C
RS Stock No. 791-8882
Mfr. Part No.MMBZ6V8AL,215
BrandNexperia
$0.115
Each (On a Tape of 150)
units
Dual Uni-Directional 9.6V 6.46V Surface Mount SOT-23 4.5V 3 24W 2.5A Yes 2 -55 °C +150 °C
RS Stock No. 751-4979
Mfr. Part No.SMAJ15CA-13-F
$0.482
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. 811-6184
Mfr. Part No.5KASMC18AHM3_A/H
BrandVishay
$1.494
Each (In a Pack of 10)
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. 920-6373
Mfr. Part No.DALC208SC6
$0.279
Each (On a Reel of 3000)
units
Complex Array - - - Surface Mount SOT-23 - 6 - - - 4 -55 °C +150 °C
RS Stock No. 166-2575
Mfr. Part No.P6KE51A
$0.329
Each (On a Reel of 4000)
units
Single Uni-Directional 70.1V 48.5V Through Hole DO-15 43.6V 2 600W 8.6A - 1 -65 °C +175 °C
RS Stock No. 543-8400
Mfr. Part No.P6KE13CA
$0.732
Each (In a Pack of 5)
units
Single Bi-Directional 18.2V 12.4V Through Hole DO-15 11V 2 600W 33A - 1 -65 °C +175 °C
RS Stock No. 543-8696
Mfr. Part No.P6KE51A
$0.828
Each (In a Pack of 5)
units
Single Uni-Directional 70.1V 48.5V Through Hole DO-15 43.6V 2 600W 8.6A - 1 -65 °C +175 °C
RS Stock No. 249-050
Mfr. Part No.DALC208SC6
$0.694
Each (In a Pack of 10)
units
Complex Array - - - Surface Mount SOT-23 - 6 - - - 4 -55 °C +150 °C
RS Stock No. 486-4274
Mfr. Part No.1.5KE24CA
$1.104
Each (In a Pack of 5)
units
Single Bi-Directional 42.8V 22.8V Through Hole DO-201 20.5V 2 1500W 234A - 1 -65 °C +175 °C
RS Stock No. 169-0714
Mfr. Part No.SMAJ15CA-13-F
$0.145
Each (On a Reel of 5000)
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. 700-2624
Mfr. Part No.RSA6.1ENTR
BrandROHM
$0.748
Each (In a Pack of 5)
units
Common Anode - - - Surface Mount UMD - 5 - - - 4 -55 °C +150 °C
RS Stock No. 169-0461
Mfr. Part No.RSA6.1ENTR
BrandROHM
$0.199
Each (On a Reel of 3000)
units
Common Anode - - - Surface Mount UMD - 5 - - - 4 -55 °C +150 °C
RS Stock No. 177-5419
Mfr. Part No.TBU-CA025-300-WH
BrandBourns
$1.265
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. 710-3496
Mfr. Part No.SMAJ550-E3/61
BrandVishay
$0.61
Each (In a Pack of 20)
units
Single Uni-Directional 760V 550V Surface Mount DO-214AC (SMA) 495V 2 300W 0.4A - 1 -55 °C +150 °C
RS Stock No. 919-0294
Mfr. Part No.SMAJ550-E3/61
BrandVishay
$0.346
Each (On a Reel of 1800)
units
Single Uni-Directional 760V 550V Surface Mount DO-214AC (SMA) 495V 2 300W 0.4A - 1 -55 °C +150 °C
RS Stock No. 714-7077
Mfr. Part No.SMAJ12A-TR
$0.54
Each (In a Pack of 25)
units
Single Uni-Directional 25.3V 13.3V Surface Mount DO-214AC (SMA) 12V 2 400W 91A Yes 1 -55 °C +150 °C
RS Stock No. 919-6383
Mfr. Part No.1.5KE33CA
$0.561
Each (In a Bag of 600)
units
Single Bi-Directional 59V 31.4V Through Hole DO-201 28.2V 2 1500W 169A - 1 -65 °C +175 °C
RS Stock No. 124-2384
Mfr. Part No.PESD5V0X1BT,215
BrandNexperia
$0.15
Each (On a Reel of 3000)
units
Common Anode Bi-Directional - 5.8V Surface Mount SOT-23 5V 3 - - Yes 2 -55 °C +150 °C
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