SM4T12CAY SM4T12CAY is a bidirectional TVS diode from STMicroelectronics with 10V reverse standoff voltage and 21.7V maximum clamping voltage. It offers 400W peak pulse power and 106A peak pulse current (8/20µs) in a surface-mount SMA (DO-214AC) package.
Mfr Part #:

SM4T12CAY

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
SM4T12CAY is a bidirectional TVS diode from STMicroelectronics with 10V reverse standoff voltage and 21.7V maximum clamping voltage. It offers 400W peak pulse power and 106A peak pulse current (8/20µs) in a surface-mount SMA (DO-214AC) package.
Total Stock: 25,000 pcs
$ Price Range: $0.20 - $0.23

SM4T12CAY Available from 1 distributor

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Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
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25,000 pcs
25000 pcs On Request 1 On Request On Request On Request On Request On Request

SM4T12CAY 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
Reverse Standoff Voltage (Vwm)
Supplier Device Package
Tape & Reel
Type
Voltage

SM4T12CAY Description

Short technical summary and product information.

The SM4T12CAY is a bidirectional TVS diode from STMicroelectronics designed for transient voltage suppression. It features a reverse standoff voltage of 10V and a maximum clamping voltage of 21.7V. With a peak pulse power rating of 400W and a peak pulse current of 106A (8/20µs), it provides robust protection against voltage transients. The device is rated for operating temperatures from -55°C to 150°C. Housed in a surface-mount SMA (DO-214AC) package, it is suitable for space-constrained designs. The SM4T12CAY is specifically intended for automotive applications. It is listed as RoHS3 compliant, REACH unaffected, and has an MSL rating of 1 (unlimited).

SM4T12CAY Quick Information

Product Type: TVS Diode
Series: SM4T
Canonical Name: SM4T12CAY TVS Diode, Bidirectional, 10V Standoff, 21.7V Clamping, 400W, SMA (DO-214AC)
Subcategory: Bidirectional TVS Diode

SM4T12CAY Compliance

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

SM4T12CAY Estimated Pricing

Qty Low High
5,000+ $0.23 $0.23
10,000+ $0.21 $0.21
25,000+ $0.20 $0.20

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

SM4T12CAY Features

  • Bidirectional TVS diode for transient protection.
  • 10V reverse standoff voltage rating.
  • 21.7V maximum clamping voltage.
  • 400W peak pulse power dissipation.
  • Surface mount SMA (DO-214AC) package.

SM4T12CAY Applications

  • Used in automotive electronic control units.
  • Protects sensor interfaces from voltage spikes.
  • Ideal for protecting data lines in vehicles.

SM4T12CAY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of SM4T12CAY?

The reverse standoff voltage (Vwm) is 10V.

What is the maximum clamping voltage of SM4T12CAY?

The maximum clamping voltage is 21.7V.

What is the peak pulse current rating of SM4T12CAY?

The peak pulse current (Ipp) is 106A for an 8/20µs waveform.

What package does the SM4T12CAY come in?

The device is supplied in a surface-mount SMA (DO-214AC) package.

Is the SM4T12CAY bidirectional?

Yes, it has 1 bidirectional channel.

What is the operating temperature range of SM4T12CAY?

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

What is the peak pulse power rating of SM4T12CAY?

The peak pulse power (Ppp) is 400W.

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