SM30T19AY The SM30T19AY is a unidirectional Zener TVS diode from STMicroelectronics designed for automotive applications. It features a maximum clamping voltage of 26V, peak pulse current of 115.4A, and 3kW peak pulse power.
Mfr Part #:

SM30T19AY

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The SM30T19AY is a unidirectional Zener TVS diode from STMicroelectronics designed for automotive applications. It features a maximum clamping voltage of 26V, peak pulse current of 115.4A, and 3kW peak pulse power.
Total Stock: 5,000 pcs
$ Price Range: $0.53 - $1.29

SM30T19AY 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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5,000 pcs
5000 pcs On Request 1 On Request On Request On Request On Request On Request

SM30T19AY 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
SVHC Present
Supplier Device Package
Tape & Reel
Type
Unidirectional Channels
Voltage

SM30T19AY Description

Short technical summary and product information.

The SM30T19AY is a unidirectional Zener TVS diode from STMicroelectronics, designed for transient voltage suppression in automotive electronics. It offers a maximum clamping voltage of 26V and can handle peak pulse currents up to 115.4A, with a peak pulse power rating of 3kW (3000W). The device is unidirectional, providing protection for a single channel.

 

This TVS diode is housed in a surface-mount DO-214AB (SMC) package, suitable for automated assembly. It operates over a wide temperature range from -55°C to 175°C, making it robust for harsh automotive environments. The part is specified for automotive applications, ensuring reliability in vehicle electrical systems.

 

Key electrical characteristics include a Zener technology clamping mechanism. The device does not include power line protection, focusing instead on signal or low-voltage bus protection. The surface-mount SMC package offers a compact footprint for space-constrained designs.

SM30T19AY Quick Information

Product Type: TVS Diode
Series: SM30TY
Canonical Name: STMicroelectronics SM30T19AY TVS Diode, 26V Clamping, 3kW, Unidirectional, SMC
Subcategory: Unidirectional Zener TVS

SM30T19AY Compliance

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

SM30T19AY Estimated Pricing

Qty Low High
1+ $1.29 $1.29
10+ $1.05 $1.05
100+ $0.81 $0.81
500+ $0.67 $0.67
1,000+ $0.57 $0.57
2,500+ $0.54 $0.54
5,000+ $0.53 $0.53
10,000+ $0.53 $0.53

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

SM30T19AY Features

  • Unidirectional Zener TVS diode for automotive use.
  • Maximum clamping voltage of 26V.
  • Peak pulse current rating of 115.4A.
  • 3kW peak pulse power capability.
  • Surface mount SMC package.

SM30T19AY Applications

  • Used for transient voltage suppression in automotive electronics.
  • Protects sensitive circuits from voltage spikes.
  • Suitable for 12V and 24V automotive systems.
  • Ideal for clamping high-energy transients.

SM30T19AY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the clamping voltage of the SM30T19AY?

The maximum clamping voltage is 26V.

What is the peak pulse current rating?

The maximum peak pulse current is 115.4A.

What package is the SM30T19AY available in?

It is available in a DO-214AB (SMC) surface-mount package.

What is the peak pulse power rating?

The maximum peak pulse power is 3000W (3kW).

What is the operating temperature range?

The operating temperature range is -55°C to 175°C.

Is the SM30T19AY unidirectional?

Yes, it has 1 unidirectional channel.

What applications is the SM30T19AY designed for?

It is designed for automotive applications.

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