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. 699-8108
Mfr. Part No.SMCJ18A-E3/57T
BrandVishay
HK$3.57
Each (In a Pack of 10)
units
Single Uni-Directional 29.2V 20V Surface Mount DO-214AB (SMC) 18V 2 1500W 51.4A Yes 1 -55 °C +150 °C
RS Stock No. 793-1377
Mfr. Part No.SMAJ18A-TR
HK$2.73
Each (In a Pack of 25)
units
Single Uni-Directional 29.2V 20V Surface Mount DO-214AC (SMA) 18V 2 400W 13.7A - 1 -55 °C +150 °C
RS Stock No. 187-1536
Mfr. Part No.SM8S24CA-Q
BrandBourns
HK$22.79
Each (In a Pack of 5)
units
- Bi-Directional - 26.7V Surface Mount DO-218 24V 2 6600W - Yes 1 -55 °C +175 °C
RS Stock No. 770-4807
Mfr. Part No.D1213A-01SO-7
HK$2.029
Each (In a Pack of 50)
units
Single Uni-Directional 17V 6V Surface Mount SOT-23 3.3V 3 - 5A Yes 1 -65 °C +150 °C
RS Stock No. 145-4699
Mfr. Part No.MMBZ27VALT1G
HK$0.282
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 40V 25.65V Surface Mount SOT-23 22V 3 40W 1A Yes 2 -55 °C +150 °C
RS Stock No. 146-2259
Mfr. Part No.SMAJ12A R3
HK$1.32
Each (On a Reel of 1800)
units
Single Uni-Directional 19.9V 13.3V Surface Mount DO-214AC (SMA) 12V 2 - 20.1A Yes 1 -55 °C +150 °C
RS Stock No. 168-8096
Mfr. Part No.LNBTVS4-220S
HK$4.253
Each (On a Reel of 2500)
units
Single Uni-Directional 35V 22V Surface Mount SMC 20V 2 22.5kW 334A - 1 -55 °C +150 °C
RS Stock No. 687-3873
Mfr. Part No.P6KE27A R0
HK$5.469
Each (In a Pack of 25)
units
Single Uni-Directional 37.5V 25.7V Through Hole DO-15 23.1V 2 600W 16.8A - 1 -55 °C +175 °C
RS Stock No. 791-9009
Mfr. Part No.PTVS28VP1UP,115
BrandNexperia
HK$2.606
Each (In a Pack of 25)
units
Single Uni-Directional 45.4V 31.1V Surface Mount SOD-128 28V 2 600W 13.2A Yes 1 -55 °C +150 °C
RS Stock No. 169-8693
Mfr. Part No.1V5KE220CA
HK$2.729
Each (On a Reel of 1250)
units
Single Bi-Directional 328V 209V Through Hole DO-201AE 185V 2 1500W 4.6A - 1 -55 °C +175 °C
RS Stock No. 687-3321
Mfr. Part No.SMAJ54CA R3
HK$3.698
Each (In a Pack of 25)
units
Single Bi-Directional 87.1V 60V Surface Mount DO-214AC (SMA) 54V 2 - 4.6A Yes 1 -55 °C +150 °C
RS Stock No. 163-9753
Mfr. Part No.ESDA15P60-1U1M
HK$2.93
Each (In a Pack of 50)
units
Array Uni-Directional 22.7V 13.6V Surface Mount QFN 13.2V 2 1200W 57A Yes 1 -55 °C +150 °C
RS Stock No. 180-7371
Mfr. Part No.SMAJ28A-E3/61
BrandVishay
HK$0.813
Each (On a Reel of 1800)
units
- - - - - - - - - - - - - -
RS Stock No. 811-9975
Mfr. Part No.P6KE180A-E3/54
BrandVishay
HK$2.96
Each (In a Pack of 25)
units
Single Uni-Directional 246V 171V Through Hole DO-204AC 154V 2 600W 2.4A - 1 -55 °C +175 °C
RS Stock No. 153-2973
Mfr. Part No.PESD5V0X1BCAL,315
BrandNexperia
HK$2.77
Each (In a Pack of 25)
units
Dual Bi-Directional 17V 8.1V Surface Mount DFN1006, SOD-882 5.5V 2 - 1.8A Yes 2 -55 °C +150 °C
RS Stock No. 543-8438
Mfr. Part No.P6KE22CA
HK$1.30
Each (In a Pack of 5)
units
Single Bi-Directional 30.6V 20.9V Through Hole DO-15 18.8V 2 600W 20A - 1 -65 °C +175 °C
RS Stock No. 812-0111
Mfr. Part No.P6SMB350A-E3/52
BrandVishay
HK$2.709
Each (In a Pack of 10)
units
Single Uni-Directional 482V 333V Surface Mount DO-214AA (SMB) 300V 2 600W 1.24A - 1 -65 °C +150 °C
RS Stock No. 719-1560
Mfr. Part No.TBU-PK050-100-WH
BrandBourns
HK$5.284
Each (In a Pack of 5)
units
Dual Bi-Directional 500V - Surface Mount DFN 20V 8 - 0.2A Yes 2 -55 °C +125 °C
RS Stock No. 193-5457
Mfr. Part No.SMA4F8.5A
HK$0.662
Each (On a Reel of 10000)
units
- Uni-Directional - - - DO-214AC (SMA) - - 400W - - - - -
RS Stock No. 805-2838
Mfr. Part No.MMQA33VT1G
HK$2.70
Each (On a Tape of 50)
units
Common Anode Uni-Directional 48.6V 31.4V Surface Mount SC-74 25V 6 150W - Yes 4 -55 °C +150 °C
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