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. 168-3673
Mfr. Part No.DZ2S180C0L
BrandPanasonic
MYR0.294
Each (On a Reel of 3000)
units
Single - - - Surface Mount SSMini2 F5 B - 2 - - - 1 - +150 °C
RS Stock No. 919-0626
Mfr. Part No.EZAEG2A50AX
BrandPanasonic
MYR3,930.00
1 Reel of 10000
Reel(s)
Single - - - Surface Mount 0402 (1005M) - 2 - - - 1 -55 °C +125 °C
RS Stock No. 919-0635
Mfr. Part No.EZAEG3A50AV
BrandPanasonic
MYR2,310.00
1 Tape of 5000
Tape(s)
Single - - - Surface Mount - - - - - - 1 - -
RS Stock No. 712-5822
Mfr. Part No.DZ2S180C0L
BrandPanasonic
MYR0.736
Each (In a Pack of 20)
units
Single - - - Surface Mount SSMini2 F5 B - 2 - - - 1 - +150 °C
RS Stock No. 156-291
Mfr. Part No.EZAEG3A50AV
BrandPanasonic
MYR0.798
Each (In a Pack of 250)
units
Single - - - Surface Mount - - - - - - 1 - -
RS Stock No. 156-285
Mfr. Part No.EZAEG2A50AX
BrandPanasonic
MYR0.544
Each (In a Pack of 500)
units
Single - - - Surface Mount 0402 (1005M) - 2 - - - 1 -55 °C +125 °C