SM30T12AY The SM30T12AY is a 3kW unidirectional Zener TVS diode from STMicroelectronics, featuring a 10V reverse standoff voltage and 17V clamping voltage in a surface-mount SMC package.
Mfr Part #:

SM30T12AY

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The SM30T12AY is a 3kW unidirectional Zener TVS diode from STMicroelectronics, featuring a 10V reverse standoff voltage and 17V clamping voltage in a surface-mount SMC package.
Total Stock: 5,000 pcs
$ Price Range: $0.52 - $1.29

SM30T12AY Available from 2 distributors

Authorised
Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Non-Authorised Inventory information
2,500 pcs
2500 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
2,500 pcs
2500 pcs On Request 1 On Request On Request On Request On Request On Request

SM30T12AY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Automotive Grade
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Reverse Standoff Voltage
SVHC Present
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

SM30T12AY Description

Short technical summary and product information.

The SM30T12AY is a unidirectional Zener TVS diode designed for overvoltage protection in automotive applications. It offers a peak pulse power dissipation of 3000W (3kW) and a peak pulse current of 176A at 17V clamping voltage.

 

The device has a reverse standoff voltage of 10V and is not intended for power line protection. It operates over a wide temperature range from -55°C to 175°C, suitable for harsh automotive environments.

 

The SM30T12AY is housed in a DO-214AB (SMC) surface-mount package, enabling automated assembly and compact PCB layouts. Its single-channel unidirectional configuration is ideal for protecting sensitive circuits on 10V rails.

SM30T12AY Quick Information

Product Type: TVS Diode
Canonical Name: SM30T12AY TVS Diode, 10V Reverse Standoff, 17V Clamping, 3kW, SMC
Subcategory: TVS Diodes - Unidirectional

SM30T12AY Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SM30T12AY Estimated Pricing

Qty Low High
1+ $1.29 $1.29
10+ $1.05 $1.05
100+ $0.81 $0.81
500+ $0.67 $0.67
1,000+ $0.57 $0.57
2,500+ $0.54 $0.54
5,000+ $0.52 $0.52
10,000+ $0.52 $0.52

Estimated market price range - modelled values for guidance only, not live distributor offers.

SM30T12AY Features

  • 3kW peak pulse power dissipation.
  • 17V clamping voltage at 176A.
  • Automotive qualified temperature range.
  • Surface mount SMC package.
  • Unidirectional Zener TVS protection.

SM30T12AY Applications

  • Protects automotive electronics from voltage transients.
  • Used in 10V supply rail clamping.
  • Ideal for high-reliability vehicle systems.
  • Suitable for transient overvoltage suppression.

SM30T12AY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SM30T12AY?

The reverse standoff voltage is 10V.

What is the clamping voltage of the SM30T12AY?

The clamping voltage is 17V.

What is the peak pulse current rating?

The peak pulse current is 176A.

What package does the SM30T12AY come in?

It is available in a DO-214AB (SMC) surface-mount package.

What is the peak pulse power dissipation?

The peak pulse power dissipation is 3000W (3kW).

What is the operating temperature range?

The operating temperature range is -55°C to 175°C.

What applications is the SM30T12AY designed for?

It is designed for automotive applications.

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