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. 103-5106
Mfr. Part No.ESD9L3.3ST5G
SGD0.11
Each (On a Reel of 8000)
units
Single Uni-Directional 9V 4.8V Surface Mount SOD-923 3.3V 2 0.15W 1A Yes 1 -55 °C +150 °C
RS Stock No. 177-5882
Mfr. Part No.P6KE27A R0
SGD0.409
Each (On a Reel of 3500)
units
Single Uni-Directional 37.5V 25.7V Through Hole DO-15 23.1V 2 600W 16.8A - 1 -55 °C +175 °C
RS Stock No. 145-7394
Mfr. Part No.TPD4E002DRLR
SGD0.342
Each (On a Reel of 4000)
units
Common Anode - - - - - - - - - - 4 - -
RS Stock No. 919-6359
Mfr. Part No.1.5KE12CA
SGD0.519
Each (In a Bag of 600)
units
Single Bi-Directional 21.7V 11.4V Through Hole DO-201 10.2V 2 1500W 461A - 1 -65 °C +175 °C
RS Stock No. 486-0575
Mfr. Part No.1.5KE12CA
SGD0.98
Each (In a Pack of 5)
units
Single Bi-Directional 21.7V 11.4V Through Hole DO-201 10.2V 2 1500W 461A - 1 -65 °C +175 °C
RS Stock No. 773-7661
Mfr. Part No.ESD9L3.3ST5G
SGD0.391
Each (In a Pack of 10)
units
Single Uni-Directional 9V 4.8V Surface Mount SOD-923 3.3V 2 0.15W 1A Yes 1 -55 °C +150 °C
RS Stock No. 805-2829
Mfr. Part No.MMQA12VT1G
SGD0.381
Each (In a Pack of 50)
units
Common Anode Uni-Directional 17.3V 11.4V Surface Mount SC-74 9.1V 6 150W - Yes 4 -55 °C +150 °C
RS Stock No. 486-4202
Mfr. Part No.1.5KE18CA
SGD0.96
Each (In a Pack of 5)
units
Single Bi-Directional 32.5V 17.1V Through Hole DO-201 15.3V 2 1500W 308A - 1 -65 °C +175 °C
RS Stock No. 919-6365
Mfr. Part No.1.5KE18CA
SGD0.514
Each (In a Bag of 600)
units
Single Bi-Directional 32.5V 17.1V Through Hole DO-201 15.3V 2 1500W 308A - 1 -65 °C +175 °C
RS Stock No. 687-3873
Mfr. Part No.P6KE27A R0
SGD0.708
Each (In a Pack of 25)
units
Single Uni-Directional 37.5V 25.7V Through Hole DO-15 23.1V 2 600W 16.8A - 1 -55 °C +175 °C
RS Stock No. 543-8551
Mfr. Part No.P6KE300CA
SGD0.988
Each (In a Pack of 5)
units
Single Bi-Directional 414V 285V Through Hole DO-15 256V 2 600W 1.5A - 1 -65 °C +175 °C
RS Stock No. 709-9060
Mfr. Part No.TPD4E002DRLR
SGD0.783
Each (In a Pack of 10)
units
Common Anode - - - - - - - - - - 4 - -
RS Stock No. 145-4207
Mfr. Part No.MMQA12VT1G
SGD0.114
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 17.3V 11.4V Surface Mount SC-74 9.1V 6 150W - Yes 4 -55 °C +150 °C
RS Stock No. 166-1780
Mfr. Part No.P6KE300CA
SGD0.384
Each (On a Reel of 4000)
units
Single Bi-Directional 414V 285V Through Hole DO-15 256V 2 600W 1.5A - 1 -65 °C +175 °C
RS Stock No. 168-7750
Mfr. Part No.BZW50-39B
SGD3.062
Each (On a Tape of 100)
units
Single Bi-Directional 90V 43.3V Through Hole R 6 39V 2 5000W 667A - 1 - +175 °C
RS Stock No. 795-9186
Mfr. Part No.BZW50-39B
SGD4.545
Each (In a Pack of 2)
units
Single Bi-Directional 90V 43.3V Through Hole R 6 39V 2 5000W 667A - 1 - +175 °C
RS Stock No. 786-2971
Mfr. Part No.MMQA5V6T3G
SGD0.43
Each (In a Pack of 50)
units
Common Anode Uni-Directional 8V 5.32V Surface Mount SC-74 3V 6 150W 3A Yes 4 -55 °C +150 °C
RS Stock No. 463-802
Mfr. Part No.MMBZ5V6ALT1G
SGD0.091
Each (In a Pack of 100)
units
Common Anode Uni-Directional 8V 5.32V Surface Mount SOT-23 3V 3 24W 3A Yes 2 -55 °C +150 °C
RS Stock No. 919-6396
Mfr. Part No.1.5KE36CA
SGD0.609
Each (In a Bag of 600)
units
Single Bi-Directional 64.3V 34.2V Through Hole DO-201 30.8V 2 1500W 156A - 1 -65 °C +175 °C
RS Stock No. 162-9244
Mfr. Part No.PACDN006MR
SGD0.422
Each (On a Reel of 4000)
units
Array Bi-Directional 13V - Surface Mount MSOP - 8 0.2W - Yes 12 -40 °C +85 °C
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