SM4T28AY STMicroelectronics TVS Diode (Uni-directional) (Other) In Stock

Name: SM4T28AY
Brand: STMicroelectronics
SKU: SM4T28AY
Availability: InStock

STMicroelectronics SM4T28AY Uni-Directional TVS Diode, 400W peak, 2-Pin DO-214AC

ACTIVETVS Diode (Uni-directional)Verified May 2026

Package / Visual Reference

SM4T28AYOther

Quick Facts

Manufacturer: STMicroelectronics
Package: Other
Pin Count: 2
Lifecycle: ACTIVE
Datasheet: SM4T28AY Datasheet PDF
Category: TVS Diode (Uni-directional)
Price: From $0.0980(MOQ 10)
Temp Range: -55.0°C to 150.0°C
RoHS: Compliant
Lead Time: 3–7 business days
Shipping: DHL Express · Worldwide

What are the specifications of SM4T28AY?

Factory Lead Time	53 Weeks, 1 Day
YTEOL	6
Breakdown Voltage-Max	29.5V
Breakdown Voltage-Min	26.7V
Breakdown Voltage-Nom	28.1V
Clamping Voltage-Max	50V
Configuration	SINGLE, 1 CHANNEL
Diode Element Material	SILICON
Diode Type	TRANS VOLTAGE SUPPRESSOR DIODE
JEDEC-95 Code	DO-214AC
JESD-30 Code	R-PDSO-C2
JESD-609 Code	e3
Non-rep Peak Rev Power Dis-Max	400W
Number of Elements	1
Package Body Material	PLASTIC/EPOXY
Package Shape	RECTANGULAR
Package Style	SMALL OUTLINE
Peak Reflow Temperature (Cel)	260
Polarity	UNIDIRECTIONAL
Qualification Status	Not Qualified
Reference Standard	AEC-Q101; IEC-61000-4-2; ISO 10605
Rep Pk Reverse Voltage-Max	24V
Reverse Current-Max	0.2 µA
Reverse Test Voltage	24V
Surface Mount	YES
Technology	AVALANCHE
Terminal Finish	Matte Tin (Sn)
Terminal Form	C BEND
Terminal Position	DUAL
## SM4T28AY Alternates Showing results	Image
Package	Other

Compliance & Regulatory

RoHS Status	Compliant
Moisture Sensitivity Level	MSL 1
ECCN	EAR99
HTS Code	8541.10.00.50
Country of Origin	Mainland China

Where can I find the SM4T28AY datasheet?

SM4T28AY Datasheet Download

Official datasheet from STMicroelectronics

What are equivalent replacements for SM4T28AY?

Compatible alternatives and drop-in replacements for SM4T28AY:

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Compare all alternatives & request quotes →

Frequently Asked Questions

What is the price of SM4T28AY?

SM4T28AY is priced from $0.0980 USD depending on quantity. Submit an RFQ on FindMyChip for the best current pricing from authorized China distributors.

Is SM4T28AY in stock?

SM4T28AY is listed as in stock at FindMyChip, sourced from authorized distributors, and ships worldwide with typical 3-7 business day lead time. Submit an RFQ for current quantity pricing, MOQ, and confirmed availability.

Where can I buy SM4T28AY?

You can buy SM4T28AY from FindMyChip, a B2B electronic component platform sourcing from China distributors. We offer competitive pricing and low MOQ for SM4T28AY from STMicroelectronics.

What is the datasheet for SM4T28AY?

The official SM4T28AY datasheet from STMicroelectronics contains full specifications including pin configuration, electrical characteristics, and application notes. Download it directly from the datasheet section above.

What package does SM4T28AY come in?

SM4T28AY is available in Other packaging. See the package diagram and pinout above for detailed dimensional information.

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About STMicroelectronics

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 $0.0980

Buy from 1pc · Factory-direct pricing

Qty.	Unit Price	Ext. Price
10+	$0.7500	$7.50
25+	$0.1100	$2.75
125+	$0.1030	$12.88
250+	$0.0980	$24.50

pcs

Unit price: $0.7500 · Total: $7.50

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

SM4T28AY STMicroelectronics TVS Diode (Uni-directional) (Other) In Stock

What are the specifications of SM4T28AY?

Compliance & Regulatory

Where can I find the SM4T28AY datasheet?

What are equivalent replacements for SM4T28AY?

Frequently Asked Questions

What is the price of SM4T28AY?

Is SM4T28AY in stock?

Where can I buy SM4T28AY?

What is the datasheet for SM4T28AY?

What package does SM4T28AY come in?

Related Guides

How to Choose Würth Elektronik 150141-Series SMD Indicator LEDs

Molex 53398-0371 Selection Guide: Choosing a 3-Circuit Wire-to-Board Header

53398-0371 Compact Wire-to-Board Connector Design Guide

742792651 Ferrite Bead Selection Guide for EMI and Power Integrity

Why Buy from FindMyChip

About STMicroelectronics

More from STMicroelectronics

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