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. 781-4301
Mfr. Part No.MMBZ18VALT1G
SGD0.096
Each (On a Tape of 100)
units
Common Anode Uni-Directional 25V 17.1V Surface Mount SOT-23 - 3 40W 1.6A Yes 2 -55 °C +150 °C
RS Stock No. 764-5593
Mfr. Part No.SMBJ18CA
BrandLittelfuse
SGD0.387
Each (In a Pack of 10)
units
Single Bi-Directional 29.2V 20V Surface Mount DO-214AA (SMB) 18V 2 600W 20.6A - 1 -65 °C +150 °C
RS Stock No. 691-0669
Mfr. Part No.RCLAMP3654P.TCT
BrandSemtech
SGD1.51
Each (In a Pack of 5)
units
Complex Array Uni-Directional 30V 6.5V Surface Mount SLP EP 5.5V 6 350W 4A Yes 2 -55 °C +125 °C
RS Stock No. 168-6250
Mfr. Part No.1.5KE62A
SGD0.376
Each (On a Tape of 600)
units
Single Uni-Directional 111V 58.9V Through Hole DO-201 53V 2 1500W 90A - 1 -65 °C +175 °C
RS Stock No. 829-0318
Mfr. Part No.ESDA18-1K
SGD0.378
Each (In a Pack of 50)
units
Single Uni-Directional 34V 18V Surface Mount SOD-523 15V 2 400W 12A Yes 1 -40 °C +150 °C
RS Stock No. 486-4319
Mfr. Part No.1.5KE33CA
SGD1.128
Each (In a Pack of 5)
units
Single Bi-Directional 59V 31.4V Through Hole DO-201 28.2V 2 1500W 169A - 1 -65 °C +175 °C
RS Stock No. 145-8782
Mfr. Part No.SMBJ33CA-TR
SGD0.177
Each (On a Reel of 2500)
units
Single Bi-Directional 69.7V 36.7V Surface Mount DO-214AA (SMB) 33V 2 600W 57A - 1 -55 °C +150 °C
RS Stock No. 165-7473
Mfr. Part No.SMAJ12A-TR
SGD0.142
Each (On a Reel of 5000)
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. 920-9152
Mfr. Part No.SMA6J5.0CA-TR
SGD0.263
Each (On a Reel of 5000)
units
Single Bi-Directional 13.4V 6.4V Surface Mount DO-214AC (SMA) 5V 2 600W 298A - 1 -55 °C +175 °C
RS Stock No. 714-7077
Mfr. Part No.SMAJ12A-TR
SGD0.469
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. 145-3509
Mfr. Part No.MMBZ20VALT1G
SGD0.049
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 -55 °C +150 °C
RS Stock No. 163-0974
Mfr. Part No.MMBZ18VALT1G
SGD0.049
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 25V 17.1V Surface Mount SOT-23 - 3 40W 1.6A Yes 2 -55 °C +150 °C
RS Stock No. 165-9842
Mfr. Part No.SMBJ18CA
BrandLittelfuse
SGD0.16
Each (On a Reel of 3000)
units
Single Bi-Directional 29.2V 20V Surface Mount DO-214AA (SMB) 18V 2 600W 20.6A - 1 -65 °C +150 °C
RS Stock No. 163-2151
Mfr. Part No.ESD9X5.0ST5G
SGD0.03
Each (On a Reel of 8000)
units
Single Uni-Directional 12.3V 6.2V Surface Mount SOD-923 5V 2 107W 8.7A Yes 1 -55 °C +150 °C
RS Stock No. 812-0212
Mfr. Part No.TPD6E001RSER
SGD0.635
Each (In a Pack of 25)
units
Complex Array Uni-Directional 100V 11V Surface Mount UQFN - 10 - - Yes 6 -40 °C +85 °C
RS Stock No. 636-5533
Mfr. Part No.SA12A-E3/54
BrandVishay
SGD1.014
Each (In a Pack of 5)
units
Single Uni-Directional 19.9V 13.3V Through Hole DO-15 12V 2 500W 25.1A - 1 -55 °C +175 °C
RS Stock No. 795-6890
Mfr. Part No.SMA6J5.0CA-TR
SGD0.652
Each (In a Pack of 25)
units
Single Bi-Directional 13.4V 6.4V Surface Mount DO-214AC (SMA) 5V 2 600W 298A - 1 -55 °C +175 °C
RS Stock No. 636-5527
Mfr. Part No.SA5.0A-E3/54
BrandVishay
SGD0.764
Each (In a Pack of 5)
units
Single Uni-Directional 9.2V 6.4V Through Hole DO-15 5V 2 500W 54.3A - 1 -55 °C +175 °C
RS Stock No. 687-8231
Mfr. Part No.MMBZ20VALT1G
SGD0.274
Each (In a Pack of 25)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 -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
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