SM4T35AY The SM4T35AY is a 400W unidirectional Zener TVS diode from STMicroelectronics. It features a 30V standoff voltage and 64.3V clamping voltage in a surface-mount SMA package.
Mfr Part #:

SM4T35AY

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The SM4T35AY is a 400W unidirectional Zener TVS diode from STMicroelectronics. It features a 30V standoff voltage and 64.3V clamping voltage in a surface-mount SMA package.
Total Stock: 20,000 pcs
$ Price Range: $0.33 - $1.46

SM4T35AY 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
10,000 pcs
10000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
10,000 pcs
10000 pcs On Request 1 On Request On Request On Request On Request On Request

SM4T35AY Specifications Quick View

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

SM4T35AY Description

Short technical summary and product information.

The SM4T35AY is a unidirectional Zener TVS diode from STMicroelectronics designed for automotive applications. It provides 400W peak pulse power dissipation with a standoff voltage of 30V and a clamping voltage of 64.3V. The device can handle a peak pulse current of 36A under an 8/20 µs waveform.

 

This TVS diode operates over a wide temperature range of -55°C to 150°C, making it suitable for harsh environments. It is housed in a surface-mount DO-214AC (SMA) package, which is compact and suitable for automated assembly. The component is RoHS3 compliant and has an MSL rating of 1 (unlimited).

 

Designed for unidirectional transient voltage suppression, the SM4T35AY does not include power line protection. It is ideal for protecting sensitive circuits from voltage spikes in automotive electronics, industrial controls, and other applications requiring reliable surge protection.

SM4T35AY Quick Information

Product Type: TVS Diode
Series: SM4TY
Canonical Name: SM4T35AY TVS Diode
Subcategory: Zener TVS Diode

SM4T35AY Compliance

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

SM4T35AY Estimated Pricing

Qty Low High
1+ $1.46 $1.46
10+ $0.95 $0.95
100+ $0.63 $0.63
500+ $0.49 $0.49
1,000+ $0.43 $0.43
2,500+ $0.39 $0.39
5,000+ $0.37 $0.37
10,000+ $0.35 $0.35
25,000+ $0.33 $0.33

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

SM4T35AY Features

  • 400W peak pulse power dissipation.
  • 30V standoff voltage rating.
  • 64.3V clamping voltage.
  • Surface mount SMA package.
  • Automotive grade application.

SM4T35AY Applications

  • Used in automotive electronic systems.
  • Protects sensitive circuits from transients.
  • Suitable for high-temperature environments.
  • Ideal for unidirectional surge protection.

SM4T35AY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the standoff voltage of the SM4T35AY?

The standoff voltage (VRWM) is 30 V.

What is the clamping voltage?

The clamping voltage is 64.3 V.

What is the peak pulse current rating?

The peak pulse current is 36 A under an 8/20 µs waveform.

What package is the SM4T35AY available in?

It is available in a DO-214AC (SMA) surface-mount package.

What is the operating temperature range?

The operating temperature range is -55°C to 150°C (TJ).

Is the SM4T35AY unidirectional?

Yes, it has one unidirectional channel.

Does the SM4T35AY provide power line protection?

No, power line protection is not supported.

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