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. 169-0735
Mfr. Part No.SMBJ5.0A
BrandLittelfuse
TWD3.50
Each (On a Reel of 3000)
units
Single Uni-Directional 9.2V 6.4V Surface Mount DO-214AA (SMB) 5V 2 600W 65.3A - 1 -65 °C +150 °C
RS Stock No. 774-3259
Mfr. Part No.1.5KE20AG
BrandLittelfuse
TWD20.80
Each (In a Pack of 10)
units
Single Uni-Directional 27.7V 19V Through Hole Case 41A 17V 2 1500W 54A Yes 1 -65 °C +175 °C
RS Stock No. 764-5647
Mfr. Part No.SMBJ5.0A
BrandLittelfuse
TWD9.10
Each (In a Pack of 25)
units
Single Uni-Directional 9.2V 6.4V Surface Mount DO-214AA (SMB) 5V 2 600W 65.3A - 1 -65 °C +150 °C
RS Stock No. 793-1945
Mfr. Part No.LC03-3.3BTG
BrandLittelfuse
TWD65.40
Each (In a Pack of 5)
units
Complex Array Uni-Directional 17V 3.3V Surface Mount SOIC 3.3V 8 3300W 100A - 1 -40 °C +125 °C
RS Stock No. 786-4545
Mfr. Part No.SA5.0ARLG
BrandLittelfuse
TWD10.40
Each (In a Pack of 25)
units
Single Uni-Directional 9.2V 6.4V Through Hole Case 59AA 5V 2 500W 54.3A Yes 1 -55 °C +150 °C
RS Stock No. 165-9795
Mfr. Part No.LC03-3.3BTG
BrandLittelfuse
TWD31.80
Each (On a Reel of 2500)
units
Complex Array Uni-Directional 17V 3.3V Surface Mount SOIC 3.3V 8 3300W 100A - 1 -40 °C +125 °C
RS Stock No. 876-8161
Mfr. Part No.5.0SMDJ58A
BrandLittelfuse
TWD38.10
Each (In a Pack of 3000)
units
Single Uni-Directional 93.6V 64.4V Surface Mount DO-214AB (SMC) 58V 2 5000W 53.5A Yes 1 -55 °C +150 °C
RS Stock No. 165-9820
Mfr. Part No.SMBJ40A
BrandLittelfuse
TWD3.60
Each (On a Reel of 3000)
units
Single Uni-Directional 64.5V 44.4V Surface Mount DO-214AA (SMB) 40V 2 600W 9.3A - 1 -65 °C +150 °C
RS Stock No. 166-0109
Mfr. Part No.SP0503BAHTG
BrandLittelfuse
TWD10.60
Each (On a Reel of 3000)
units
Array Uni-Directional 8.5V - Surface Mount SOT-143 5.5V 4 0.22W - Yes 3 -40 °C +85 °C
RS Stock No. 793-1967
Mfr. Part No.SP0503BAHTG
BrandLittelfuse
TWD20.80
Each (In a Pack of 10)
units
Array Uni-Directional 8.5V - Surface Mount SOT-143 5.5V 4 0.22W - Yes 3 -40 °C +85 °C
RS Stock No. 793-1958
Mfr. Part No.SP0502BAHTG
BrandLittelfuse
TWD18.60
Each (In a Pack of 10)
units
Array Uni-Directional 8.5V - Surface Mount SOT-23 5.5V 3 0.22W - Yes 2 -40 °C +85 °C
RS Stock No. 876-8035
Mfr. Part No.1.5KE56CA
BrandLittelfuse
TWD15.30
Each (In a Pack of 50)
units
Single Bi-Directional 77V 53.2V Through Hole DO-201 47.8V 2 1500W 19.7A Yes 1 -55 °C +175 °C
RS Stock No. 178-6966
Mfr. Part No.SP720ABG
BrandLittelfuse
TWD82.70
Each (In a Tube of 40)
units
Complex Array Uni-Directional - - Surface Mount SOIC - 16 - 3A Yes 14 -40 °C +105 °C
RS Stock No. 793-1989
Mfr. Part No.SP720ABG
BrandLittelfuse
TWD103.00
Each (In a Pack of 5)
units
Complex Array Uni-Directional - - Surface Mount SOIC - 16 - 3A Yes 14 -40 °C +105 °C
RS Stock No. 764-5587
Mfr. Part No.SMBJ15A
BrandLittelfuse
TWD10.30
Each (In a Pack of 25)
units
Single Uni-Directional 24.4V 16.7V Surface Mount DO-214AA (SMB) 15V 2 600W 24.6A - 1 -65 °C +150 °C
RS Stock No. 179-1089
Mfr. Part No.SMBJ15A
BrandLittelfuse
TWD3.20
Each (On a Reel of 3000)
units
Single Uni-Directional 24.4V 16.7V Surface Mount DO-214AA (SMB) 15V 2 600W 24.6A - 1 -65 °C +150 °C
RS Stock No. 764-5631
Mfr. Part No.SMBJ40A
BrandLittelfuse
TWD10.00
Each (In a Pack of 25)
units
Single Uni-Directional 64.5V 44.4V Surface Mount DO-214AA (SMB) 40V 2 600W 9.3A - 1 -65 °C +150 °C
RS Stock No. 166-0021
Mfr. Part No.SP0502BAHTG
BrandLittelfuse
TWD8.80
Each (On a Reel of 3000)
units
Array Uni-Directional 8.5V - Surface Mount SOT-23 5.5V 3 0.22W - Yes 2 -40 °C +85 °C
RS Stock No. 165-9817
Mfr. Part No.SMBJ24A
BrandLittelfuse
TWD3.30
Each (On a Reel of 3000)
units
Single Uni-Directional 38.9V 26.7V Surface Mount DO-214AA (SMB) 24V 2 600W 15.5A - 1 -65 °C +150 °C
RS Stock No. 764-5492
Mfr. Part No.P6SMB33A
BrandLittelfuse
TWD12.60
Each (In a Pack of 10)
units
Single Uni-Directional 45.7V 31.4V Surface Mount DO-214AA (SMB) 28.2V 2 600W 13.3A - 1 -65 °C +150 °C