SM6T12AY The SM6T12AY is a 600W automotive-grade unidirectional Zener TVS diode from STMicroelectronics. It features a 10.2V reverse standoff voltage, 21.7V clamping voltage, and 184A peak pulse current rating in a DO-214AA (SMB) package.
Mfr Part #:

SM6T12AY

Available from 2 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The SM6T12AY is a 600W automotive-grade unidirectional Zener TVS diode from STMicroelectronics. It features a 10.2V reverse standoff voltage, 21.7V clamping voltage, and 184A peak pulse current rating in a DO-214AA (SMB) package.
Total Stock: 12,500 pcs
$ Price Range: $0.24 - $1.12

SM6T12AY 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
2,500 pcs
2500 pcs On Request 1 On Request On Request On Request On Request On Request

SM6T12AY 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
Reverse Standoff Voltage (Vrwm)
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

SM6T12AY Description

Short technical summary and product information.

The SM6T12AY is a unidirectional Zener TVS diode manufactured by STMicroelectronics, designed for transient voltage suppression in automotive and industrial applications. It offers a reverse standoff voltage of 10.2V and a maximum clamping voltage of 21.7V, capable of handling 600W peak pulse power (8/20µs waveform) with a peak pulse current of 184A.

 

This device is housed in a surface-mount DO-214AA (SMB) package, suitable for automated assembly. It operates over a junction temperature range of -55°C to 150°C, ensuring reliability in harsh environments. The part is specified for automotive applications, meeting demanding surge and ESD protection requirements.

 

As a Zener-based TVS diode, the SM6T12AY provides precise voltage clamping for protecting sensitive electronics from overvoltage transients. It is unidirectional, making it ideal for DC lines where a single polarity reference is needed. Key specifications include a 10.2V standoff, 21.7V clamp, 600W peak pulse power, and 184A peak pulse current under 8/20µs conditions.

SM6T12AY Quick Information

Product Type: TVS Diode
Series: SM6T
Canonical Name: TVS Diode, 10.2V Reverse Standoff, 21.7V Clamping, 600W, DO-214AA (SMB), Automotive
Subcategory: Unidirectional Zener TVS

SM6T12AY Compliance

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

SM6T12AY Estimated Pricing

Qty Low High
1+ $1.12 $1.12
10+ $0.70 $0.70
100+ $0.46 $0.46
500+ $0.36 $0.36
1,000+ $0.32 $0.32
2,500+ $0.28 $0.28
5,000+ $0.26 $0.26
10,000+ $0.25 $0.25
25,000+ $0.24 $0.24

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

SM6T12AY Features

  • 600W peak pulse power capability.
  • 10.2V reverse standoff voltage rating.
  • 21.7V maximum clamping voltage.
  • Automotive-grade application qualification.
  • Surface mount DO-214AA SMB package.

SM6T12AY Applications

  • Ideal for automotive electronics protection circuits.
  • Used in power supply transient suppression.
  • Suitable for I/O interface voltage clamping.
  • Protects sensitive components from ESD and surge.

SM6T12AY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SM6T12AY?

The reverse standoff voltage is 10.2V.

What is the maximum clamping voltage?

The maximum clamping voltage is 21.7V.

What is the peak pulse current rating?

The peak pulse current is 184A (8/20µs).

What package is the SM6T12AY available in?

It is available in DO-214AA (SMB) surface mount package.

What is the peak pulse power rating?

The peak pulse power rating is 600W.

Is the SM6T12AY suitable for automotive applications?

Yes, it is specified for automotive applications.

What is the operating temperature range?

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

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