SM4T30CAY SM4T30CAY is a 400W bidirectional Zener TVS diode from STMicroelectronics. It features 26V reverse standoff voltage and 53.5V clamping voltage, suitable for automotive applications.
Mfr Part #:

SM4T30CAY

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
SM4T30CAY is a 400W bidirectional Zener TVS diode from STMicroelectronics. It features 26V reverse standoff voltage and 53.5V clamping voltage, suitable for automotive applications.
Total Stock: 176,020 pcs
$ Price Range: $0.34 - $1.53

SM4T30CAY 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
155,000 pcs
155000 pcs On Request 1 On Request On Request On Request On Request On Request
Non-Authorised Inventory information
21,020 pcs
21020 pcs On Request 1 On Request On Request On Request On Request On Request

SM4T30CAY Specifications Quick View

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

SM4T30CAY Description

Short technical summary and product information.

The SM4T30CAY is a bidirectional Zener TVS diode from STMicroelectronics designed for transient voltage suppression. It is rated for a peak pulse power of 400W, with a peak pulse current of 43A (8/20 µs waveform). The device clamps at 53.5V and has a reverse standoff voltage of 26V. It features a single bidirectional channel and is not intended for power line protection. The component is surface mount in a DO-214AC (SMA) package, with an operating junction temperature range of -55°C to 150°C. It is specifically designed for automotive applications, making it suitable for protection in electronic control units, sensors, and other automotive circuits.

SM4T30CAY Quick Information

Product Type: TVS Diode
Series: SM4T
Canonical Name: STMicroelectronics SM4T30CAY TVS Diode, 400W, Bidirectional, 26V Reverse Standoff, SMA (DO-214AC)
Subcategory: Bidirectional Zener TVS

SM4T30CAY Compliance

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

SM4T30CAY Estimated Pricing

Qty Low High
1+ $1.53 $1.53
10+ $0.70 $0.70
100+ $0.49 $0.49
500+ $0.39 $0.39
1,000+ $0.35 $0.35
5,000+ $0.35 $0.35
25,000+ $0.34 $0.34

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

SM4T30CAY Features

  • 400W peak pulse power capability.
  • Bidirectional Zener TVS protection.
  • 26V reverse standoff voltage.
  • Surface mount SMA package.
  • Automotive grade applications.

SM4T30CAY Applications

  • Protects automotive electronics from transients.
  • Used in engine control unit circuits.
  • Ideal for sensor interface protection.
  • Suitable for 24V automotive systems.

SM4T30CAY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the clamping voltage of the SM4T30CAY?

The clamping voltage is 53.5V.

What is the peak pulse current rating?

The peak pulse current is 43A at 8/20 µs.

What package is the SM4T30CAY available in?

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

Is the SM4T30CAY a bidirectional TVS diode?

Yes, it has one bidirectional channel.

What is the operating temperature range?

The operating junction temperature range is -55°C to 150°C.

What is the peak pulse power rating?

The peak pulse power is 400W.

Is the SM4T30CAY suitable for automotive applications?

Yes, it is designed for automotive applications.

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