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STMICROELECTRONICS SM4T23AY Automotive Surge Protector

The automotive-grade SM4TY Transil series provides surge protection for sensitive circuits against ISO 7637-2 and electrostatic discharges per ISO 10605. Featuring planar technology, it offers low leakage current and high junction temperature reliability, suitable for high-end automotive electronic applications. Packaged in SMA (JEDEC DO-214AB) metal-over-mold construction with UL 94 VO flammability rating, these unidirectional and bidirectional devices are qualified to meet automotive standards, ensuring robust performance under voltage transients, EMI, and ESD conditions.

Authorized Distributors
Source:Newark
Part No:SM4T23AY
Stock:2622
Inv Date:06-11-2026
Price: Unit price: $0.789
Buy/RFQ:
Source:DigiKey
Part No:SM4T23AY
Stock:4831
Inv Date:06-11-2026
Price: Unit price: $1.55
Buy/RFQ:
Part No:SM4T23AY
Stock:0
Inv Date:06-12-2026
Price: Unit price: $1.5
Buy/RFQ:

STMICROELECTRONICS SM4T23AY Automotive Surge Protector Specifications:

  • Peak pulse power: 400 W (10/1000 us), 2.3 kW (8/20 us)
  • Stand-off voltage range: 5 V to 70 V
  • Unidirectional and bidirectional types available
  • Leakage current: 0.2 pA at 25°C, 1 pA at 85°C
  • Operating junction temperature max: 150 °C
  • Maximum lead soldering temperature: 260 °C
  • Storage temperature: -65 to +150 °C
  • Peak pulse power dissipation: 400 W initial, 270 W at Tj max
  • Package: JEDEC SMA (JEDEC DO-214AB)
  • Package flammability: UL 94 VO
  • Qualified to automotive standards: AEC-Q101
  • Surge standards compliance: ISO 10605, ISO 7637-2
  • Clamping voltage and junction capacitance specifications available
  • Lead terminals: Solder plated, conforming to MIL-STD-750, Method 2026

Buy the STMicroelectronics SM4T23AY – Reliable Surge Suppressor for Industrial Applications

Secure your automotive electronic systems with the STMicroelectronics SM4T23AY surge protection diode. Featuring 400 W peak pulse power, low leakage current, and high-temperature resilience, this device ensures reliable operation against transient voltage spikes and electrostatic discharges. Packaged in a durable SMA package and qualified to automotive standards, it offers optimal performance for sensitive circuits. Order online today to benefit from fast delivery and trusted quality, providing your projects with the robust surge protection needed for demanding automotive environments.

Order your STMicroelectronics SeriesSM4T23AY automotive surge protection diode today and ensure your circuits are safeguarded against voltage transients and electrostatic discharges.

Frequently Asked Questions

Where can I buy STMICROELECTRONICS SM4T23AY?

You can click on the BUY or RFQ button to purchase SM4T23AY from an authorized STMICROELECTRONICS distributor.

How do I troubleshoot issues or seek technical support for part SM4T23AY?

You can download the SM4T23AY datasheet or visit the STMICROELECTRONICS website for support.

Who is the manufacturer of SM4T23AY?

STMICROELECTRONICS

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