SM50T10AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock

Name: SM50T10AY
Brand: STMicroelectronics
SKU: SM50T10AY
Availability: InStock

STMicroelectronics SM50T10AY is an automotive-grade unidirectional TVS diode rated at 5000 W peak pulse power with a 9.9 V nominal breakdown voltage in an SMC package. Designed to ISO 7637-2 and MIL-STD-750 standards for robust transient suppression in 12 V vehicle systems. RoHS-compliant with AEC-Q101 qualification and worldwide distribution.

ACTIVETVS Diode (Uni-directional)Verified Jun 2026

Package / Visual Reference

SM50T10AYDiodes Moulded

Quick Facts

Manufacturer: STMicroelectronics
Package: Diodes Moulded
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: SM50T10AY Datasheet PDF
Category: TVS Diode (Uni-directional)
Price: From $0.7168(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 SM50T10AY?

5000 W peak pulse power rating for robust transient suppression in 12 V automotive electrical systems
9.9 V nominal breakdown voltage with 14.4 V maximum clamping voltage, compliant with ISO 7637-2 and MIL-STD-750
AEC-Q101 qualified automotive-grade silicon TVS in compact SMC package for high-reliability vehicle applications

What is SM50T10AY used for?

The SM50T10AY is designed for protecting automotive ECUs, body electronics, and powertrain modules from ISO 7637-2 load dump transients on 12 V vehicle power rails. Its 5000 W peak pulse power and 14.4 V maximum clamping voltage efficiently clamp voltage spikes caused by alternator disconnection and inductive switching events. This TVS diode suits under-hood environments where operating temperatures reach up to 175°C and MIL-STD-750 compliance is required.

What are the specifications of SM50T10AY?

Factory Lead Time	21Weeks
YTEOL	8
Additional Feature	ISO 7637-2; MIL-STD-750
Breakdown Voltage-Max	10.4V
Breakdown Voltage-Min	9.4V
Breakdown Voltage-Nom	9.9V
Clamping Voltage-Max	14.4V
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	8.5V
Reverse Current-Max	20 µA
Reverse Test Voltage	8.5V
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 SM50T10AY datasheet?

SM50T10AY Datasheet Download

Official datasheet from STMicroelectronics

What are equivalent replacements for SM50T10AY?

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

Frequently Asked Questions

How does SM50T10AY's 5000 W peak pulse power protect automotive ECUs from ISO 7637-2 transients?

The SM50T10AY absorbs up to 5000 W peak pulse power during transient events as defined by ISO 7637-2, clamping the voltage to a maximum of 14.4 V across a 9.4 V to 10.4 V breakdown range. This prevents overvoltage damage to ECU microcontrollers and MOSFET gate drivers on 12 V automotive power rails.

What clamping and breakdown voltages define SM50T10AY's protection window for 12 V vehicle systems?

The SM50T10AY has a minimum breakdown voltage of 9.4 V and a maximum breakdown voltage of 10.4 V, with a nominal of 9.9 V. The maximum clamping voltage is 14.4 V at peak pulse current, providing a 9.4 V to 14.4 V protection window that keeps 12 V bus-connected devices safe from load dump spikes.

Which automotive subsystems benefit most from using SM50T10AY over lower-rated TVS alternatives?

Subsystems exposed to severe inductive transients—such as fuel injector drivers, alternator rectifier circuits, and 12 V bus protection in ADAS modules—benefit from SM50T10AY's 5000 W rating. Lower-rated 1500 W or 600 W TVS diodes cannot absorb ISO 7637-2 pulse 5a and 5b load dump transients without degradation, whereas this 5000 W device handles them within the SMC footprint.

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AvailabilityIn Stock

Reference Price (USD)

From $0.7168

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
10+	$1.0400	$10.40
100+	$0.8700	$87.00
500+	$0.8300	$415.00
2500+	$0.7720	$1930.00
5000+	$0.7320	$3660.00
10000+	$0.7168	$7167.70

pcs

Unit price: $1.0400 · Total: $10.40

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

SM50T10AY STMicroelectronics TVS Diode (Uni-directional) (Diodes Moulded) In Stock

What are the key features of SM50T10AY?

What is SM50T10AY used for?

What are the specifications of SM50T10AY?

Compliance & Regulatory

Where can I find the SM50T10AY datasheet?

What are equivalent replacements for SM50T10AY?

Frequently Asked Questions

How does SM50T10AY's 5000 W peak pulse power protect automotive ECUs from ISO 7637-2 transients?

What clamping and breakdown voltages define SM50T10AY's protection window for 12 V vehicle systems?

Which automotive subsystems benefit most from using SM50T10AY over lower-rated TVS alternatives?

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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