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. 183-5693
Mfr. Part No.UMZ30NUMTL
BrandROHM
TWD3.60
Each (In a Pack of 100)
units
- Uni-Directional - 29.19V Surface Mount SOT-323FL 27V 3 200mW - Yes 2 - 150 °C
RS Stock No. 146-9441
Mfr. Part No.MMBZ20VALT116
BrandROHM
TWD1.30
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 - +150 °C
RS Stock No. 148-6746
Mfr. Part No.MMBZ24VALT116
BrandROHM
TWD2.40
Each (In a Pack of 200)
units
Common Anode Uni-Directional 32V 22.8V Surface Mount SOT-23 20V 3 40W 1.25A Yes 2 - +150 °C
RS Stock No. 146-9446
Mfr. Part No.MMBZ33VALT116
BrandROHM
TWD1.20
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 46V 31.35V Surface Mount SOT-23 26V 3 40W 0.87A Yes 2 - +150 °C
RS Stock No. 183-5505
Mfr. Part No.RSB12WMTL
BrandROHM
TWD4.20
Each (In a Pack of 60)
units
- Uni-Directional - 9.6V Surface Mount SOT-416FL 9V 3 150mW - Yes 2 - 150 °C
RS Stock No. 183-5184
Mfr. Part No.RSB6.8CMT2N
BrandROHM
TWD1.10
Each (On a Reel of 8000)
units
Single Bi-Directional 16V 5.78V Surface Mount SOD-923 5V 2 100mW 3A Yes 1 - 150 °C
RS Stock No. 700-2630
Mfr. Part No.RSB6.8GT2R
BrandROHM
TWD14.40
Each (In a Pack of 5)
units
Single - - - Surface Mount VMD - 2 - - - 1 -55 °C +150 °C
RS Stock No. 168-0458
Mfr. Part No.RSA12LTE25
BrandROHM
TWD9.30
Each (On a Reel of 1500)
units
Single Uni-Directional 19.5V 13.3V Surface Mount PMDS, SOD-106 12V 2 600W 31A Yes 1 - +150 °C
RS Stock No. 133-2830
Mfr. Part No.RSB33VTE-17
BrandROHM
TWD4.80
Each (In a Pack of 100)
units
Single - - - Surface Mount SOD-323FL - 2 - - - 1 - +150 °C
RS Stock No. 146-9449
Mfr. Part No.MMBZ6V8ALT116
BrandROHM
TWD1.50
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. 146-9442
Mfr. Part No.MMBZ24VALT116
BrandROHM
TWD1.20
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 32V 22.8V Surface Mount SOT-23 20V 3 40W 1.25A Yes 2 - +150 °C
RS Stock No. 146-9437
Mfr. Part No.MMBZ15VALT116
BrandROHM
TWD1.20
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 21V 14.25V Surface Mount SOT-23 12V 3 40W 1.9A Yes 2 - +150 °C
RS Stock No. 183-5192
Mfr. Part No.UMZ30NUMTL
BrandROHM
TWD3.00
Each (On a Reel of 3000)
units
- Uni-Directional - 29.19V Surface Mount SOT-323FL 27V 3 200mW - Yes 2 - 150 °C
RS Stock No. 168-0460
Mfr. Part No.RSA5LTE25
BrandROHM
TWD8.70
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. 183-5195
Mfr. Part No.UMZ5.1NUMTL
BrandROHM
TWD3.00
Each (On a Reel of 3000)
units
- Uni-Directional - 4.84V Surface Mount SOT-323FL 3.5V 3 200mW - Yes 2 - 150 °C
RS Stock No. 183-5619
Mfr. Part No.VS3V3BB1EST15R
BrandROHM
TWD2.50
Each (In a Pack of 150)
units
Single Bi-Directional 8.2V 4V Surface Mount DSN0603 3.3V 2 100mW 5.5A Yes 1 -55 °C 150 °C
RS Stock No. 148-5770
Mfr. Part No.MMBZ20VALT116
BrandROHM
TWD2.10
Each (In a Pack of 200)
units
Common Anode Uni-Directional 28V 19V Surface Mount SOT-23 17V 3 40W 1.4A Yes 2 - +150 °C
RS Stock No. 146-9447
Mfr. Part No.MMBZ5V6ALT116
BrandROHM
TWD1.30
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 8V 5.32V Surface Mount SOT-23 3V 3 24W 3A Yes 2 - +150 °C
RS Stock No. 183-5190
Mfr. Part No.UMZ18NUMTL
BrandROHM
TWD3.00
Each (On a Reel of 3000)
units
- Uni-Directional - 17.56V Surface Mount SOT-323FL 16V 3 200mW - Yes 2 - 150 °C
RS Stock No. 183-5593
Mfr. Part No.STZU6.2NT146
BrandROHM
TWD9.10
Each (In a Pack of 60)
units
- Uni-Directional - 5.9V Surface Mount SOT-346 5.5V 3 200mW - Yes 2 - 150 °C