SM50T23AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock

Name: SM50T23AY
Brand: STMicroelectronics
SKU: SM50T23AY
Availability: InStock

STMicroelectronics SM50T23AY is an automotive-grade unidirectional TVS diode rated at 5000 W peak pulse power with a 20 V standoff voltage in SMC package. It features a clamping voltage of 32.4 V max and complies with ISO 7637-2 and MIL-STD-750 standards for robust transient suppression.

ACTIVETVS Diode (Uni-directional)Verified Jun 2026

Package / Visual Reference

SM50T23AYDiodes Moulded

Quick Facts

Manufacturer: STMicroelectronics
Package: Diodes Moulded
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: SM50T23AY Datasheet PDF
Category: TVS Diode (Uni-directional)
Price: From $0.6712(MOQ 10)
Temp Range: -55.0°C to 175.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the key features of SM50T23AY?

5000 W peak pulse power handling capacity for heavy-duty automotive transient suppression
Automotive-qualified per ISO 7637-2 and MIL-STD-750 for reliable operation in harsh environments
Low clamping voltage of 32.4 V max at 23.4 V nominal breakdown, protecting sensitive electronics efficiently

What is SM50T23AY used for?

The SM50T23AY is designed for automotive electronics requiring protection against load-dump transients, reverse battery, and inductive switching spikes on 12 V and 24 V vehicle power rails. It is suitable for use in ECUs, motor control modules, and power distribution units where ISO 7637-2 compliance is mandated. The SMC surface-mount package facilitates integration into space-constrained automotive PCB designs.

What are the specifications of SM50T23AY?

Factory Lead Time	21Weeks
YTEOL	8
Additional Feature	ISO 7637-2; MIL-STD-750
Breakdown Voltage-Max	24.6V
Breakdown Voltage-Min	22.2V
Breakdown Voltage-Nom	23.4V
Clamping Voltage-Max	32.4V
Configuration	SINGLE, 1 CHANNEL
Diode Element Material	SILICON
Diode Type	TRANS VOLTAGE SUPPRESSOR DIODE
JEDEC-95 Code	DO-214AB
JESD-30 Code	R-PDSO-C2
Non-rep Peak Rev Power Dis-Max	5000W
Number of Elements	1
Package Body Material	PLASTIC/EPOXY
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Polarity	UNIDIRECTIONAL
Reference Standard	AEC-Q101; IEC-61000-4-2, 4-4; ISO 10605; ISO 16750
Rep Pk Reverse Voltage-Max	20V
Reverse Current-Max	0.2 µ A
Reverse Test Voltage	20V
Surface Mount	YES
Technology	AVALANCHE
Terminal Form	C BEND
Terminal Position	DUAL
Package	Diodes Moulded

Compliance & Regulatory

RoHS Status	Compliant
Lead-Free	Yes (Pb-Free)
ECCN	EAR99
HTS Code	8541.10.00.50
Country of Origin	Mainland China

Where can I find the SM50T23AY datasheet?

SM50T23AY Datasheet Download

Official datasheet from STMicroelectronics

What are equivalent replacements for SM50T23AY?

No known alternates. Submit an RFQ and our team can suggest alternatives.

Frequently Asked Questions

What is the peak pulse power rating and clamping voltage of the SM50T23AY?

The SM50T23AY is rated for 5000 W peak pulse power with a clamping voltage of 32.4 V maximum at a nominal breakdown voltage of 23.4 V, providing strong transient suppression for 20 V standoff automotive circuits.

Which automotive standards does the SM50T23AY comply with, and why does this matter for vehicle ECU designs?

The SM50T23AY is qualified per ISO 7637-2 and MIL-STD-750, ensuring it can withstand the load-dump pulses and switching transients defined in automotive standards. This makes it directly suitable for ECU power supply rails, 12 V battery lines, and 24 V truck systems without additional derating.

How does the SM50T23AY compare to lower-power TVS diodes for protecting a 20 V automotive bus?

At 5000 W peak pulse power and a breakdown voltage range of 22.2 V to 24.6 V, the SM50T23AY handles much larger transient energy than standard 600 W or 1500 W TVS diodes, making it the preferred choice for automotive load-dump events that can exceed 40 V for several hundred milliseconds.

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STMicroelectronics is a global semiconductor leader serving customers across the spectrum of electronics applications. ST's products are found in a wide range of applications including automotive, industrial, personal electronics, and communications.

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AvailabilityIn Stock

Reference Price (USD)

From $0.6712

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
10+	$1.0700	$10.70
100+	$0.8900	$89.00
500+	$0.8570	$428.48
1000+	$0.8499	$849.92
2500+	$0.6712	$1678.00

pcs

Unit price: $1.0700 · Total: $10.70

In Stock · 24h Response · Worldwide Shipping

Direct Contact

WhatsApp Inquiry Email RFQ

Lead Time3-7 business days

MOQFrom 1 piece

ShippingDHL / FedEx / UPS

OriginChina (Authorized)

Response within 24 hours · Worldwide shipping

“Their engineering team helped us find a pin-compatible alternative when our original MCU went EOL.”

Marco Rossi

CTO, AutoDrive Systems, Italy

SM50T23AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock

What are the key features of SM50T23AY?

What is SM50T23AY used for?

What are the specifications of SM50T23AY?

Compliance & Regulatory

Where can I find the SM50T23AY datasheet?

What are equivalent replacements for SM50T23AY?

Frequently Asked Questions

What is the peak pulse power rating and clamping voltage of the SM50T23AY?

Which automotive standards does the SM50T23AY comply with, and why does this matter for vehicle ECU designs?

How does the SM50T23AY compare to lower-power TVS diodes for protecting a 20 V automotive bus?

Related Guides

CSD87313DMS Synchronous Buck Power Stage Design Guide

STEF05SGR eFuse Selection Guide for 5 V Overcurrent Protection

C0402C103K3RACTU Selection Guide: Choosing a 10 nF 0402 MLCC

STM32H753VIT6 MCU Selection Guide: Memory, Package, Connectivity, and Security

Why Buy from FindMyChip

About STMicroelectronics

More from STMicroelectronics

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