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. 166-0049
Mfr. Part No.NUP1301U,115
BrandNexperia
HK$0.645
Each (On a Reel of 3000)
units
Series Uni-Directional 20V 100V Surface Mount SOT-323 (SC-70) 80V 3 220W 11A Yes 2 -55 °C +150 °C
RS Stock No. 485-9474
Mfr. Part No.SMBJ12CA
HK$3.033
Each (In a Pack of 10)
units
Single Bi-Directional 19.9V 13.3V Surface Mount DO-214AA (SMB) 12V 2 600W 30.2A - 1 -55 °C +150 °C
RS Stock No. 751-5073
Mfr. Part No.SMBJ5.0A-13-F
HK$2.382
Each (In a Pack of 25)
units
Single Uni-Directional 9.2V 6.4V Surface Mount DO-214AA (SMB) 5V 2 600W 65.2A - 1 -55 °C +150 °C
RS Stock No. 631-1255
Mfr. Part No.SMCJ12CA-E3/57T
BrandVishay
HK$4.56
Each (In a Pack of 20)
units
Single Bi-Directional 19.9V 13.3V Surface Mount SMC 12V 2 1500W 75.4A - 1 -55 °C +150 °C
RS Stock No. 166-1559
Mfr. Part No.PESD5V0L5UV,115
BrandNexperia
HK$0.96
Each (On a Reel of 4000)
units
Common Anode Uni-Directional 12V 6.4V Surface Mount SSMini 5V 6 25W 2.5A Yes 5 -65 °C +150 °C
RS Stock No. 815-1020
Mfr. Part No.5KP85A-E3/54
BrandVishay
HK$14.714
Each (In a Pack of 5)
units
Single Uni-Directional 137V 94.4V Through Hole P600 85V 2 5000W 36.5A - 1 -55 °C +175 °C
RS Stock No. 918-9391
Mfr. Part No.5KP15A-E3
BrandVishay
HK$12.746
Each (On a Reel of 800)
units
Single Uni-Directional 24.4V 16.7V Through Hole P600 15V 2 5000W 205A - 1 -55 °C +175 °C
RS Stock No. 710-3519
Mfr. Part No.SMBJ20CA-E3/52
BrandVishay
HK$2.666
Each (In a Pack of 25)
units
Single Bi-Directional 32.4V 22.2V Surface Mount DO-214AA (SMB) 20V 2 600W 18.5A - 1 -55 °C +150 °C
RS Stock No. 169-8520
Mfr. Part No.P6KE12CA
HK$1.686
Each (On a Reel of 4000)
units
Single Bi-Directional 16.7V 11.4V Through Hole DO-15 10.2V 2 600W 36A - 1 -65 °C +175 °C
RS Stock No. 802-2474
Mfr. Part No.SMCJ18CA
HK$5.188
Each (In a Pack of 20)
units
Single Bi-Directional 29.2V 20V Surface Mount DO-214AB (SMC) 18V 2 1500W 51.4A - 1 - +150 °C
RS Stock No. 903-5913
Mfr. Part No.SMBJ6.0CA
HK$0.598
Each (On a Reel of 3000)
units
Single Bi-Directional 10.3V 6.67V Surface Mount DO-214AA (SMB) 6V 2 600W 58.3A - 1 -55 °C +150 °C
RS Stock No. 145-2629
Mfr. Part No.SMBJ20CA-E3/52
BrandVishay
HK$1.228
Each (On a Reel of 750)
units
Single Bi-Directional 32.4V 22.2V Surface Mount DO-214AA (SMB) 20V 2 600W 18.5A - 1 -55 °C +150 °C
RS Stock No. 732-9169
Mfr. Part No.MAX3208EAUB+
HK$21.30
Each
units
Complex Array - - - - - - - - - - 4 - -
RS Stock No. 543-8393
Mfr. Part No.P6KE12CA
HK$3.484
Each (In a Pack of 5)
units
Single Bi-Directional 16.7V 11.4V Through Hole DO-15 10.2V 2 600W 36A - 1 -65 °C +175 °C
RS Stock No. 165-2515
Mfr. Part No.SMCJ5.0A-E3
BrandVishay
HK$2.576
Each (On a Reel of 850)
units
Single Uni-Directional 9.2V 6.4V Surface Mount SMC 5V 2 1500W 163A - 1 -55 °C +150 °C
RS Stock No. 146-0655
Mfr. Part No.CD143A-SR70
BrandBourns
HK$3.538
Each (On a Reel of 3000)
units
Complex Array Uni-Directional 7V 85V Surface Mount SOT-143 70V 4 - 24A Yes 4 -55 °C +150 °C
RS Stock No. 799-2846
Mfr. Part No.MAX3205EATE+
HK$20.296
Each (In a Pack of 5)
units
Dual Uni-Directional 30V - Surface Mount TQFN - 16 1.66W 45A Yes 2 -40 °C +125 °C
RS Stock No. 780-5411
Mfr. Part No.PTVS3V3S1UR,115
BrandNexperia
HK$2.881
Each (In a Pack of 25)
units
Single Uni-Directional 8V 5.2V Surface Mount SOD-123W 3.3V 2 400W 43.8A - 1 -55 °C +150 °C
RS Stock No. 145-3566
Mfr. Part No.MMQA6V2T1G
HK$0.712
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 9V 5.89V Surface Mount SC-74 4V 6 150W 2.6A Yes 4 -55 °C +150 °C
RS Stock No. 773-4583
Mfr. Part No.LSP0600BJR-S
BrandBourns
HK$4.747
Each (In a Pack of 25)
units
Single Uni-Directional - - Surface Mount DO-214AC (SMA) 6V 2 - - No 1 -40 °C +150 °C