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. 146-0992
Mfr. Part No.DS9503P+
£0.539
Each (In a Tube of 120)
Units
Single - - - - Surface Mount TSOC - - 6 - - 1 -40 °C
RS Stock No. 540-2906
Mfr. Part No.DS9503P+
£0.79
Each
Units
Single - - - - Surface Mount TSOC - - 6 - - 1 -40 °C
RS Stock No. 783-3548
Mfr. Part No.MAX3207EAUT+T
£1.248
Each (On a Tape of 5)
Units
Array Uni-Directional 30V 0.95V 45A Surface Mount SOT-23 - 100nA 6 0.69W Yes 4 -40 °C
RS Stock No. 923-7523
Mfr. Part No.MAX3207EAUT+T
£0.477
Each (On a Reel of 2500)
Units
Array Uni-Directional 30V 0.95V 45A Surface Mount SOT-23 - 100nA 6 0.69W Yes 4 -40 °C
RS Stock No. 799-2846
Mfr. Part No.MAX3205EATE+
£1.61
Each (In a Pack of 5)
Units
Dual Uni-Directional 30V - 45A Surface Mount TQFN - 100nA 16 1.66W Yes 2 -40 °C
RS Stock No. 732-9169
Mfr. Part No.MAX3208EAUB+
£1.94
Each
Units
Complex Array - - - - - - - - - - - 4 -
RS Stock No. 177-6854
Mfr. Part No.MAX3208EAUB+
£1.49
Each (In a Tube of 50)
Units
Complex Array - - - - - - - - - - - 4 -
RS Stock No. 165-9463
Mfr. Part No.MAX3205EATE+
£1.35
Each (In a Tube of 100)
Units
Dual Uni-Directional 30V - 45A Surface Mount TQFN - 100nA 16 1.66W Yes 2 -40 °C
RS Stock No. 164-7833
Mfr. Part No.MAX30034CUA+
£4.62
Each
Units
Single Bi-Directional - - 4A Surface Mount TDFN - - 8 953mW Yes 4 0 °C
RS Stock No. 164-7631
Mfr. Part No.MAX30034CUA+
£3.957
Each (In a Tube of 50)
Units
Single Bi-Directional - - 4A Surface Mount TDFN - - 8 953mW Yes 4 0 °C
New
RS Stock No. 189-7263
Mfr. Part No.MAX3205EATE+
£1.363
Each (In a Tube of 100)
Units
Dual Uni-Directional 30V - 45A Surface Mount TQFN - 100nA 16 1.66W Yes 2 -40 °C
New
RS Stock No. 190-4906
Mfr. Part No.DS9503P+T&R
£0.514
Each (On a Reel of 4000)
Units
Single - - - 2 (Typ.)A Surface Mount TSOC - 100nA 6 - Yes 1 -40 °C
New
RS Stock No. 189-8793
Mfr. Part No.MAX3205EATE+
£1.532
Each (In a Pack of 10)
Units
Dual Uni-Directional 30V - 45A Surface Mount TQFN - 100nA 16 1.66W Yes 2 -40 °C
New
RS Stock No. 190-5994
Mfr. Part No.DS9503P+T&R
£0.64
Each (In a Pack of 10)
Units
Single - - - 2 (Typ.)A Surface Mount TSOC - 100nA 6 - Yes 1 -40 °C