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. 700-2628
Mfr. Part No.RSA6.1U5T108
BrandROHM
PHP6.30
Each (In a Pack of 5)
units
Common Anode - - - Surface Mount SOT-457 (SC-74) - 6 - - - 5 -55 °C +150 °C
RS Stock No. 169-0462
Mfr. Part No.RSA6.1U5T108
BrandROHM
PHP6.042
Each (On a Reel of 3000)
units
Common Anode - - - Surface Mount SOT-457 (SC-74) - 6 - - - 5 -55 °C +150 °C
RS Stock No. 146-9443
Mfr. Part No.MMBZ27VALT116
BrandROHM
PHP1.825
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 40V 25.65V Surface Mount SOT-23 22V 3 40W 1A Yes 2 - +150 °C
RS Stock No. 178-5693
Mfr. Part No.EDZCVT2R6.8B
BrandROHM
PHP1.405
Each (On a Reel of 8000)
units
Single Uni-Directional - 6.65V Surface Mount SOD-523 5V 2 150mW - Yes 1 - +150 °C
RS Stock No. 183-5593
Mfr. Part No.STZU6.2NT146
BrandROHM
PHP5.842
Each (In a Pack of 60)
units
- Uni-Directional - 5.9V Surface Mount SOT-346 5.5V 3 200mW - Yes 2 - 150 °C
RS Stock No. 183-5570
Mfr. Part No.RSBC6.8CMT2N
BrandROHM
PHP5.842
Each (In a Pack of 80)
units
Single Bi-Directional - 6.62V Surface Mount SOD-923 5V 2 100mW - Yes 1 - 150 °C
RS Stock No. 183-5196
Mfr. Part No.UMZ6.8NUMTL
BrandROHM
PHP3.505
Each (On a Reel of 3000)
units
- Uni-Directional - 6.47V Surface Mount SOT-323FL 5V 3 200mW - Yes 2 - 150 °C
RS Stock No. 148-6783
Mfr. Part No.MMBZ9V1ALT116
BrandROHM
PHP1.963
Each (In a Pack of 200)
units
Common Anode Uni-Directional 14V 8.65V Surface Mount SOT-23 6V 3 24W 1.7A Yes 2 - +150 °C
RS Stock No. 146-9436
Mfr. Part No.MMBZ12VALT116
BrandROHM
PHP1.89
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 17V 11.4V Surface Mount SOT-23 8.5V 3 40W 2.35A Yes 2 - +150 °C
RS Stock No. 168-1583
Mfr. Part No.RSA6.1J4T2R
BrandROHM
PHP13.97
Each (In a Pack of 50)
units
Common Anode Uni-Directional - - Surface Mount EMD, SC-75A 3V 5 80W - Yes 4 - +150 °C
RS Stock No. 146-9449
Mfr. Part No.MMBZ6V8ALT116
BrandROHM
PHP1.965
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 9.6V 6.46V Surface Mount SOT-23 4.5V 3 24W 2.5A Yes 2 - +150 °C
RS Stock No. 168-0457
Mfr. Part No.EMZT6.8ET2R
BrandROHM
PHP39.537
Each (On a Reel of 8000)
units
Common Anode Uni-Directional - - Surface Mount EMD, SC-75A 3.5V 5 - - Yes 4 - +150 °C
RS Stock No. 183-5665
Mfr. Part No.VS5V0BC1EST15R
BrandROHM
PHP2.726
Each (In a Pack of 150)
units
Single Bi-Directional 12V 6V Surface Mount DSN0603 5V 2 100mW 5A Yes 1 -55 °C 150 °C
RS Stock No. 146-9454
Mfr. Part No.RSB36F2T106
BrandROHM
PHP4.702
Each (On a Reel of 3000)
units
Single Bi-Directional - - Surface Mount SOT-323 27V 3 - - Yes 2 - +150 °C
RS Stock No. 146-9440
Mfr. Part No.MMBZ18VALT116
BrandROHM
PHP1.724
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 25V 17.1V Surface Mount SOT-23 14.5V 3 40W 1.6A Yes 2 - +150 °C
RS Stock No. 148-6844
Mfr. Part No.MMBZ33VALT116
BrandROHM
PHP1.963
Each (In a Pack of 200)
units
Common Anode Uni-Directional 46V 31.35V Surface Mount SOT-23 26V 3 40W 0.87A Yes 2 - +150 °C
RS Stock No. 183-5678
Mfr. Part No.UMZ27NUMTL
BrandROHM
PHP5.063
Each (In a Pack of 100)
units
- Uni-Directional - 26.19V Surface Mount SOT-323FL 24V 3 200mW - Yes 2 - 150 °C
RS Stock No. 133-2964
Mfr. Part No.VS5V0BA1EST15R
BrandROHM
PHP3.05
Each (In a Pack of 100)
units
Single Bi-Directional 10V 6V Surface Mount 0201 (0603M) 5V 2 10W 1A Yes 1 -55 °C +150 °C
RS Stock No. 168-0460
Mfr. Part No.RSA5LTE25
BrandROHM
PHP143.275
Each (On a Reel of 1500)
units
Single Uni-Directional 10.5V 6.45V Surface Mount PMDS, SOD-106 5.8V 2 600W 57A Yes 1 - +150 °C
RS Stock No. 183-5684
Mfr. Part No.VS5V0BL1HST15R
BrandROHM
PHP3.505
Each (In a Pack of 120)
units
Single Bi-Directional 18V 6V Surface Mount DSN0603 5V 2 100mW 2A Yes 1 -55 °C 150 °C