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. 169-9105
Mfr. Part No.P6KE22CA R0
HK$2.13
Each (On a Tape of 3500)
units
Single Bi-Directional 30.6V 20.9V Through Hole DO-15 18.8V 2 600W 20A - 1 -55 °C +175 °C
RS Stock No. 796-9460
Mfr. Part No.SMCJ33A R7
HK$2.261
Each (In a Pack of 25)
units
Single Uni-Directional 53.3V 36.7V Surface Mount DO-214AB (SMC) 33V 2 1500W 29A - 1 -55 °C +150 °C
RS Stock No. 748-5114
Mfr. Part No.P4SMA15CA R2
HK$2.852
Each (In a Pack of 50)
units
Single Bi-Directional 21.2V 14.3V Surface Mount DO-214AC (SMA) 12.8V 2 400W 20A - 1 -55 °C +150 °C
RS Stock No. 169-9107
Mfr. Part No.P6KE33CA R0
HK$2.323
Each (On a Reel of 3500)
units
Single Bi-Directional 45.7V 31.4V Through Hole DO-15 28.2V 2 600W 13.8A - 1 -55 °C +175 °C
RS Stock No. 687-3860
Mfr. Part No.P6KE20CA R0
HK$4.22
Each (In a Pack of 20)
units
Single Bi-Directional 27.7V 19V Through Hole DO-15 17V 2 600W 22A - 1 -55 °C +175 °C
RS Stock No. 169-9103
Mfr. Part No.P6KE20A R0
HK$1.045
Each (On a Tape of 3500)
units
Single Uni-Directional 27.7V 19V Through Hole DO-15 17V 2 600W 22A - 1 -55 °C +175 °C
RS Stock No. 687-3908
Mfr. Part No.P6KE47CA R0
HK$5.282
Each (In a Pack of 20)
units
Single Bi-Directional 64.8V 44.7V Through Hole DO-15 40.2V 2 600W 9.7A - 1 -55 °C +175 °C
RS Stock No. 687-3283
Mfr. Part No.SMAJ48CA R3
HK$3.518
Each (In a Pack of 20)
units
Single Bi-Directional 77.4V 53.3V Surface Mount DO-214AC (SMA) 48V 2 - 5.2A Yes 1 -55 °C +150 °C
RS Stock No. 687-3801
Mfr. Part No.P6KE12A R0
HK$3.695
Each (In a Pack of 25)
units
Single Uni-Directional 16.7V 11.4V Through Hole DO-15 10.2V 2 600W 37A - 1 -55 °C +175 °C
RS Stock No. 687-3390
Mfr. Part No.SMAJ7.0CA R3
HK$2.852
Each (In a Pack of 20)
units
Single Bi-Directional 12V 7.78V Surface Mount DO-214AC (SMA) 7V 2 - 33.3A Yes 1 -55 °C +150 °C
RS Stock No. 687-2965
Mfr. Part No.P6SMB22CA R4
HK$4.195
Each (In a Pack of 20)
units
Single Bi-Directional 30.6V 20.9V Surface Mount DO-214AA (SMB) 18.8V 2 600W 20A - 1 -65 °C +150 °C
RS Stock No. 169-9111
Mfr. Part No.P6KE7.5CA R0
HK$2.734
Each (On a Tape of 3500)
units
Single Bi-Directional 11.3V 7.13V Through Hole DO-15 6.4V 2 600W 55A - 1 -55 °C +175 °C
RS Stock No. 687-3242
Mfr. Part No.SMAJ33CA R3
HK$0.694
Each (In a Pack of 20)
units
Single Bi-Directional 53.3V 36.7V Surface Mount DO-214AC (SMA) 33V 2 - 7.5A Yes 1 -55 °C +150 °C
RS Stock No. 687-3182
Mfr. Part No.SMAJ20A R3
HK$3.273
Each (In a Pack of 25)
units
Single Uni-Directional 32.4V 22.2V Surface Mount DO-214AC (SMA) 20V 2 - 12.3A Yes 1 -55 °C +150 °C
RS Stock No. 748-5118
Mfr. Part No.P4SMA33A R2
HK$4.113
Each (In a Pack of 20)
units
Single Uni-Directional 45.7V 31.4V Surface Mount DO-214AC (SMA) 28.2V 2 400W 9A - 1 -55 °C +150 °C
RS Stock No. 169-9108
Mfr. Part No.P6KE62A R0
HK$1.989
Each (On a Tape of 3500)
units
Single Uni-Directional 85V 58.9V Through Hole DO-15 53V 2 600W 7.4A - 1 -55 °C +175 °C
RS Stock No. 177-5886
Mfr. Part No.P6KE440CA R0
HK$4.003
Each (On a Reel of 3500)
units
Single Bi-Directional 600V 418V Through Hole DO-15 376V 2 600W 1.04A - 1 -55 °C +175 °C
RS Stock No. 687-3930
Mfr. Part No.P6KE91A R0
HK$1.362
Each (In a Pack of 25)
units
Single Uni-Directional 125V 86.5V Through Hole DO-15 77.8V 2 600W 5A - 1 -55 °C +175 °C
RS Stock No. 169-9067
Mfr. Part No.SMAJ5.0CA R3
HK$1.12
Each (On a Reel of 1800)
units
Single Bi-Directional 9.2V 6.4V Surface Mount DO-214AC (SMA) 5V 2 - 43.5A Yes 1 -55 °C +150 °C
RS Stock No. 169-9073
Mfr. Part No.SMAJ6.5CA R3
HK$1.489
Each (On a Reel of 1800)
units
Single Bi-Directional 11.2V 7.22V Surface Mount DO-214AC (SMA) 6.5V 2 - 35.7A Yes 1 -55 °C +150 °C