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. 687-8231
Mfr. Part No.MMBZ20VALT1G
€0.012
Each (In a Pack of 25)
units
Common Anode Uni-Directional 28V 19V 1.4A Surface Mount SOT-23 17V 50µA 3 40W Yes 2 -55 °C
RS Stock No. 486-5025
Mfr. Part No.SM6T36A
€0.292
Each (In a Pack of 10)
units
Single Uni-Directional 64.3V 34.2V 62A Surface Mount DO-214AA (SMB) 30.8V 200nA 2 600W - 1 -55 °C
RS Stock No. 187-1408
Mfr. Part No.SM8S24CA-Q
BrandBourns
€1.304
Each (On a Reel of 750)
units
- Bi-Directional - 26.7V - Surface Mount DO-218 24V 10µA 2 6600W Yes 1 -55 °C
RS Stock No. 816-6745
Mfr. Part No.PESD3V3U1UB,115
BrandNexperia
€0.259
Each (In a Pack of 50)
units
Single Uni-Directional - 4.5V - Surface Mount SOD-523 3.3V 100nA 2 - Yes 1 -55 °C
RS Stock No. 819-3692
Mfr. Part No.SMBJ160CA-E3/52
BrandVishay
€0.12
Each (In a Pack of 20)
units
Single Bi-Directional 259V 178V 2.3A Surface Mount DO-214AA (SMB) 160V 1µA 2 600W - 1 -55 °C
RS Stock No. 165-9950
Mfr. Part No.PTVS16VS1UR,115
BrandNexperia
€0.108
Each (On a Reel of 3000)
units
Single Uni-Directional 26V 17.8V 15.4A Surface Mount SOD-123 16V 100nA 2 400W Yes 1 -55 °C
RS Stock No. 187-1524
Mfr. Part No.SMF4L24A
BrandBourns
€0.313
Each (In a Pack of 50)
units
Single Uni-Directional - 26.7V - Surface Mount SOD-123FL 24V 1µA 2 400W Yes 1 -55 °C
RS Stock No. 919-4479
Mfr. Part No.SMCJ24CA-E3/57T
BrandVishay
€0.251
Each (On a Reel of 850)
units
Single Bi-Directional 38.9V 26.7V 38.6A Surface Mount SMC 24V 1µA 2 1500W - 1 -55 °C
RS Stock No. 124-5426
Mfr. Part No.SMF05CT1G
€0.075
Each (On a Reel of 3000)
units
Common Anode Uni-Directional 12.5V 6.2V 8A Surface Mount SOT-363 (SC-88) - 5µA 6 100W Yes 5 -40 °C
RS Stock No. 827-0418
Mfr. Part No.DRTR5V0U1SO-7
€0.086
Each (In a Pack of 100)
units
Array Uni-Directional - 6V 5A Surface Mount SOT-23 5.5V 100nA 3 0.3W Yes 3 -65 °C
RS Stock No. 162-4112
Mfr. Part No.824551900
€0.609
Each (On a Reel of 500)
units
Single Bi-Directional 15.4V 10.5V 194.8A Surface Mount DO-214AB (SMC) - 20µA 2 3000W - 1 -65 °C
RS Stock No. 183-5190
Mfr. Part No.UMZ18NUMTL
BrandROHM
€0.076
Each (On a Reel of 3000)
units
- Uni-Directional - 17.56V - Surface Mount SOT-323FL 16V 100nA 3 200mW Yes 2 -
RS Stock No. 178-7420
Mfr. Part No.SMAJ58CA-TR
€0.097
Each (On a Reel of 5000)
units
Single Bi-Directional 121V 64.4V 19A Surface Mount DO-214AC (SMA) 58V 200nA 2 400W Yes 1 -55 °C
RS Stock No. 903-5664
Mfr. Part No.P6KE15CA
€0.041
Each (On a Tape of 3000)
units
Single Bi-Directional 21.2V 14.3V 28A Through Hole DO-15 12.8V 5µA 2 600W - 1 -55 °C
RS Stock No. 102-3577
Mfr. Part No.SMP100LC-200
€0.212
Each (On a Reel of 2500)
units
Single Bi-Directional - 200V 100A Surface Mount DO-214AA (SMB) 180V 2µA 2 - - 1 -40 °C
RS Stock No. 691-0669
Mfr. Part No.RCLAMP3654P.TCT
BrandSemtech
€0.36
Each (In a Pack of 5)
units
Complex Array Uni-Directional 30V 6.5V 4A Surface Mount SLP EP 5.5V 1µA 6 350W Yes 2 -55 °C
RS Stock No. 802-2468
Mfr. Part No.SMCJ170CA
€0.456
Each (In a Pack of 20)
units
Single Bi-Directional 275V 189V 5.5A Surface Mount DO-214AB (SMC) 170V 5µA 2 1500W - 1 -
RS Stock No. 921-7939
Mfr. Part No.824540541
€0.679
Each (In a Pack of 10)
units
Single Uni-Directional 87.1V 63.15V 17.3A Surface Mount DO-214AB (SMC) - 1µA 2 1500W - 1 -65 °C
RS Stock No. 165-7706
Mfr. Part No.1.5KE10A
€0.28
Each (On a Tape of 600)
units
Single Uni-Directional 18.6V 9.5V 538A Through Hole DO-201 8.5V 10µA 2 1500W - 1 -65 °C
RS Stock No. 920-9158
Mfr. Part No.SMA6J40CA-TR
€0.162
Each (On a Reel of 5000)
units
Single Bi-Directional 73.6V 44.4V 48A Surface Mount DO-214AC (SMA) 40V 1µA 2 600W - 1 -55 °C
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