SM4T23CAY SM4T23CAY is a 20V automotive Zener TVS diode from STMicroelectronics. It features 42.8V clamping voltage and 400W peak pulse power in a surface-mount SMA package.
Mfr Part #:

SM4T23CAY

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
SM4T23CAY is a 20V automotive Zener TVS diode from STMicroelectronics. It features 42.8V clamping voltage and 400W peak pulse power in a surface-mount SMA package.
Total Stock: 10,000 pcs
$ Price Range: $0.35 - $1.56

SM4T23CAY Available from 1 distributor

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10000 pcs On Request 1 On Request On Request On Request On Request On Request

SM4T23CAY 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
Voltage - Reverse Standoff (Typical)

SM4T23CAY Description

Short technical summary and product information.

The SM4T23CAY is a bidirectional Zener TVS diode designed for automotive applications. It provides transient voltage protection with a reverse standoff voltage of 20V and a maximum clamping voltage of 42.8V at a peak pulse current of 54A (8/20µs waveform). The device can handle up to 400W of peak pulse power.

 

This TVS diode is housed in a DO-214AC (SMA) surface-mount package and operates over a junction temperature range of -55°C to 150°C. It is suitable for protecting sensitive electronics in automotive environments from voltage transients and surges.

 

The SM4T23CAY does not include power line protection and is intended for signal line protection. Its compact SMA package enables high-density PCB layouts in automotive control units and infotainment systems.

SM4T23CAY Quick Information

Product Type: TVS Diode
Series: SM4TY
Canonical Name: SM4T23CAY Automotive Zener TVS Diode
Subcategory: Automotive TVS Diodes

SM4T23CAY Compliance

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

SM4T23CAY Estimated Pricing

Qty Low High
1+ $1.56 $1.56
10+ $0.99 $0.99
100+ $0.66 $0.66
500+ $0.51 $0.51
1,000+ $0.44 $0.44
2,500+ $0.41 $0.41
5,000+ $0.37 $0.37
10,000+ $0.36 $0.36
25,000+ $0.35 $0.35

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

SM4T23CAY Features

  • Automotive Zener TVS diode protection.
  • 20V reverse standoff voltage rating.
  • 42.8V maximum clamping voltage.
  • 400W peak pulse power capability.
  • Surface-mount SMA package.

SM4T23CAY Applications

  • Protects automotive electronic control units.
  • Suitable for infotainment system transient suppression.
  • Used in sensor interface protection circuits.
  • Ideal for 12V automotive power rail protection.

SM4T23CAY FAQs

6 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SM4T23CAY?

The reverse standoff voltage is 20V.

What is the maximum clamping voltage of the SM4T23CAY?

The maximum clamping voltage is 42.8V.

What is the peak pulse current rating of the SM4T23CAY?

The peak pulse current is 54A (8/20µs waveform).

What package does the SM4T23CAY come in?

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

Is the SM4T23CAY suitable for automotive applications?

Yes, it is specifically designed for automotive applications.

What is the operating temperature range of the SM4T23CAY?

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

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