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 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. 811-9947
Mfr. Part No.P4SMA47AHE3/5A
BrandVishay
€0.071
Each (In a Pack of 25)
units
Single Uni-Directional 64.8V 44.7V 6.2A Surface Mount DO-214AC (SMA) 40.2V 1µA 2 400W - 1 -65 °C
RS Stock No. 162-8770
Mfr. Part No.TPD4E1B06DCKR
€0.162
Each (On a Reel of 3000)
units
Complex Array Bi-Directional 14.5V 7V 3A Surface Mount SOT-363 (SC-70) 5.5V 500pA 6 45W Yes 4 -40 °C
RS Stock No. 169-9086
Mfr. Part No.BZW04-17B R0
€0.097
Each (On a Tape of 5000)
units
Single Bi-Directional 27.7V 19V 14.5A Through Hole DO-41 17V 1µA 2 - - 1 -65 °C
RS Stock No. 177-7630
Mfr. Part No.SMBJ18CA-E3/5B
BrandVishay
€0.119
Each (On a Reel of 3200)
units
Single Bi-Directional 29.2V 20V 20.5A Surface Mount DO-214AA (SMB) 18V 1µA 2 600W - 1 -55 °C
RS Stock No. 165-7060
Mfr. Part No.P4SMA47AHE3/5A
BrandVishay
€0.08
Each (On a Reel of 7500)
units
Single Uni-Directional 64.8V 44.7V 6.2A Surface Mount DO-214AC (SMA) 40.2V 1µA 2 400W - 1 -65 °C
RS Stock No. 121-9566
Mfr. Part No.SD05-7
€0.03
Each (On a Reel of 3000)
units
Single Uni-Directional 14.5V 6.2V 24A Surface Mount SOD-323 5V 10µA 2 350W Yes 1 -55 °C
RS Stock No. 714-6954
Mfr. Part No.BZW04-15
€0.356
Each (In a Pack of 20)
units
Single Uni-Directional 32.5V 17.1V 71A Through Hole DO-15 15.3V 1µA 2 400W - 1 -65 °C
RS Stock No. 165-2497
Mfr. Part No.SMBJ45CA-E3/52
BrandVishay
€0.133
Each (On a Reel of 750)
units
Single Bi-Directional 80.3V 50V 7.5A Surface Mount DO-214AA (SMB) 45V 1µA 2 600W Yes 1 -55 °C
RS Stock No. 699-8063
Mfr. Part No.SMBJ45CA-E3/52
BrandVishay
€0.274
Each (In a Pack of 20)
units
Single Bi-Directional 80.3V 50V 7.5A Surface Mount DO-214AA (SMB) 45V 1µA 2 600W Yes 1 -55 °C
RS Stock No. 920-6272
Mfr. Part No.USBLC6-4SC6
€0.14
Each (On a Reel of 3000)
units
Complex Array Uni-Directional 17V 6V 5A Surface Mount SOT-23 5V 2µA 6 - Yes 4 -40 °C
RS Stock No. 146-2259
Mfr. Part No.SMAJ12A R3
€0.083
Each (On a Reel of 1800)
units
Single Uni-Directional 19.9V 13.3V 20.1A Surface Mount DO-214AC (SMA) 12V 5µA 2 - Yes 1 -55 °C
RS Stock No. 786-2943
Mfr. Part No.ESD9P5.0ST5G
€0.10
Each (In a Pack of 50)
units
Single Uni-Directional 9.8V 5.8V 1A Surface Mount SOD-923 5V 1µA 2 0.15W Yes 1 -55 °C
RS Stock No. 146-0959
Mfr. Part No.SD12-7
€0.027
Each (On a Reel of 3000)
units
Single Uni-Directional 25V 13.3V 15A Surface Mount SOD-323 12V 1µA 2 350W Yes 1 -55 °C
RS Stock No. 166-1782
Mfr. Part No.P6KE20CA
€0.118
Each (On a Reel of 4000)
units
Single Bi-Directional 27.7V 19V 22A Through Hole DO-15 17V 5µA 2 600W - 1 -65 °C
RS Stock No. 699-7969
Mfr. Part No.P6KE15CA-E3/54
BrandVishay
€0.177
Each (In a Pack of 20)
units
Single Bi-Directional 21.2V 14.3V 28.3A Through Hole DO-15 12.8V 1µA 2 600W - 1 -55 °C
RS Stock No. 714-6951
Mfr. Part No.BZW04-13B
€0.365
Each (In a Pack of 20)
units
Single Bi-Directional 27.2V 14.3V 85A Through Hole DO-15 12.8V 5µA 2 400W - 1 -65 °C
RS Stock No. 165-7396
Mfr. Part No.SMBJ13A-TR
€0.086
Each (On a Reel of 2500)
units
Single Uni-Directional 27.2V 14.4V 147A Surface Mount DO-214AA (SMB) 13V 200nA 2 600W - 1 -55 °C
RS Stock No. 691-0786
Mfr. Part No.SLVU2.8.TCT
BrandSemtech
€0.532
Each (In a Pack of 5)
units
Single Uni-Directional 15V - 24A Surface Mount SOT-23 2.8V 1µA 3 400W Yes 1 -55 °C
RS Stock No. 710-3484
Mfr. Part No.SMAJ5.0A-E3/5A
BrandVishay
€0.248
Each (In a Pack of 10)
units
Single Uni-Directional 9.2V 6.4V 43.5A Surface Mount DO-214AC (SMA) 5V 800µA 2 400W - 1 -55 °C
RS Stock No. 793-1942
Mfr. Part No.SLVU2.8HTG
BrandLittelfuse
€1.00
Each (In a Pack of 5)
units
Single Uni-Directional 15V 3V 24A Surface Mount SOT-23 2.8V 1µA 3 600W Yes 1 -40 °C
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