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STMICROELECTRONICS SM4T47AY High Power Automotive Transient Suppressor

The SM4T47AY is a high-power automotive transient voltage suppressor designed to protect sensitive circuits from surges and electrostatic discharges according to ISO standards. Packaged in a JEDEC SMA package, this bidirectional device features a 400 W peak pulse power capacity, a stand-off voltage of 0.2 to 1 V, and low leakage current of up to 0.197 pA at 25°C. It is ideal for automotive and high-end electronic applications requiring reliable surge suppression and thermal stability, meeting UL 94 V-0 flammability standards and being AEC-Q101 qualified.

Authorized Distributors
Source:DigiKey
Part No:SM4T47AY
Stock:1926
Inv Date:06-11-2026
Price: Unit price: $1.55
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Part No:SM4T47AY
Stock:3028
Inv Date:06-12-2026
Price: Unit price: $1.46
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Part No:SM4T47AY
Stock:0
Inv Date:06-11-2026
Price: Unit price: $0.117
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Part No:SM4T47AY
Stock:10000
Inv Date:06-12-2026
Price: N/A
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STMICROELECTRONICS SM4T47AY High Power Automotive Transient Suppressor Specifications:

  • Peak pulse power: 400 W (10/1000 ps), 2.3 kW (8/20 us)
  • Stand-off voltage: from 5 V to 70 V
  • Peak pulse power dissipation: 400 W during transient
  • Maximum junction temperature: 150°C
  • Operating temperature range: -55°C to +150°C
  • Storage temperature range: -65°C to +150°C
  • Package: JEDEC SMA, dimensions 2.25 mm to 2.90 mm in length
  • Polarity: Bidirectional or unidirectional types available
  • Leakage current: 0.2 pA at 25°C, 1 pA at 85°C
  • Compliance: UL 94 V-0, AEC-Q101 qualified
  • Stand-off voltage: suitable for automotive power levels
  • Soldering temperature: 260°C for 10 seconds

Buy the Buy STMicroelectronics SM4T47AY Part Number SM4T47AY Online

Order the STMicroelectronics SM4T47AY now and ensure reliable protection against surges and electrostatic discharges for automotive electronics. Designed with a robust SMA package, this device offers 400 W peak pulse power, low leakage current, and high thermal stability, perfect for sensitive circuits. Backed by AEC-Q101 qualification and UL 94 V-0 compliance, it provides peace of mind and longevity in demanding environments. Buy online today and safeguard your electronic systems with trusted, high-quality components designed for automotive reliability.

Get STMicroelectronics SM4T47AY today—built for automotive high power surge suppression and long-lasting durability.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS SM4T47AY?

You can click on the BUY or RFQ button to purchase SM4T47AY from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part SM4T47AY?

You can download the SM4T47AY datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of SM4T47AY?

STMICROELECTRONICS

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