STMicroelectronics 1-Element Uni-Directional TVS Diode, 400 W, 2-Pin DO-214

RS Stock No.:: 168-7178
Mfr. Part No.:: SM4T56AY
Brand:: STMicroelectronics

STMicroelectronics 1-Element Uni-Directional TVS Diode, 400 W, 2-Pin DO-214

Subtotal (1 reel of 5000 units)*

£1,265.00

(exc. VAT)

£1,520.00

(inc. VAT)

Add 5000 units to get free delivery

Orders below £50.00 (exc. VAT) cost £6.95.

Temporarily out of stock

Shipping from 22 July 2026

Need more? Click ‘Check delivery dates’ to find extra stock and lead times.

Units	Per unit	Per Reel*
5000 +	£0.253	£1,265.00

*price indicative

RS Stock No.:: 168-7178
Mfr. Part No.:: SM4T56AY
Brand:: STMicroelectronics

Specifications

Technical Reference

Legislation and Compliance

Product Details

Find similar products by selecting one or more attributes.

Select all	Attribute	Value
	Brand	STMicroelectronics
	Diode Configuration	Single
	Product Type	TVS Diode
	Direction Type	Uni-Directional
	Minimum Breakdown Voltage Vbr	53.3V
	Mount Type	Surface
	Package Type	DO-214
	Maximum Reverse Stand-off Voltage Vwm	48V
	Pin Count	2
	Peak Pulse Power Dissipation Pppm	400W
	Test Current It	1mA
	Maximum Peak Pulse Current Ippm	23A
	Minimum Operating Temperature	-55°C
	Clamping Voltage VC	100V
	Maximum Operating Temperature	150°C
	Number of Elements per Chip	1
	Series	SM4TxxAY
	Standards/Approvals	No
	Length	4.6mm
	Width	2.9 mm
	Height	2.45mm
	Maximum Reverse Leakage Current	1μA
	Automotive Standard	AEC-Q101

	Select all
	Brand STMicroelectronics
	Diode Configuration Single
	Product Type TVS Diode
	Direction Type Uni-Directional
	Minimum Breakdown Voltage Vbr 53.3V
	Mount Type Surface
	Package Type DO-214
	Maximum Reverse Stand-off Voltage Vwm 48V
	Pin Count 2
	Peak Pulse Power Dissipation Pppm 400W
	Test Current It 1mA
	Maximum Peak Pulse Current Ippm 23A
	Minimum Operating Temperature -55°C
	Clamping Voltage VC 100V
	Maximum Operating Temperature 150°C
	Number of Elements per Chip 1
	Series SM4TxxAY
	Standards/Approvals No
	Length 4.6mm
	Width 2.9 mm
	Height 2.45mm
	Maximum Reverse Leakage Current 1μA
	Automotive Standard AEC-Q101

COO (Country of Origin):: MA

Automotive Transil™ TVS SMT 400W

The SM4TxxxAY Transil™ Transient Voltage Suppressor range has been designed to protect sensitive automotive circuits against surges defined in ISO 7637-2 and against electrostatic discharges according to ISO 10605. Qualified to AEC-Q101.

Package: DO-214AC (SMA)

RS Product Codes

795-7215 SM4T6V7AY Automotive 400W Unidirectional TVS, 6.7V

795-7287 SM4T6V7CAY Automotive 400W Bidirectional TVS, 6.7V

795-7237 SM4T10AY Automotive 400W Unidirectional TVS, 10V

795-7341 SM4T10CAY Automotive 400W Bidirectional TVS, 10V

795-7240 SM4T14CAY Automotive 400W Bidirectional TVS, 14V

795-7350 SM4T15AY Automotive 400W Unidirectional TVS, 15V

795-7354 SM4T15CAY Automotive 400W Bidirectional TVS, 15V

795-7313 SM4T18AY Automotive 400W Unidirectional TVS, 18V

795-7243 SM4T21CAY Automotive 400W Bidirectional TVS, 21V

795-7316 SM4T26AY Automotive 400W Unidirectional TVS, 26V

795-7338 SM4T28AY Automotive 400W Unidirectional TVS, 28V

795-7212 SM4T28CAY Automotive 400W Bidirectional TVS, 28V

795-8565 SM4T33AY Automotive 400W Unidirectional TVS, 33V

795-7357 SM4T33CAY Automotive 400W Bidirectional TVS, 33V

795-9170 SM4T35CAY Automotive 400W Bidirectional TVS, 35V

795-7326 SM4T39AY Automotive 400W Unidirectional TVS, 39V

795-8432 SM4T39CAY Automotive 400W Bidirectional TVS, 39V

795-7366 SM4T47CAY Automotive 400W Bidirectional TVS, 47V

795-7253 SM4T56AY Automotive 400W Unidirectional TVS, 56V

795-7304 SM4T56CAY Automotive 400W Bidirectional TVS, 56V

795-7293 SM4T68AY Automotive 400W Unidirectional TVS, 68V

795-7322 SM4T68CAY Automotive 400W Bidirectional TVS, 68V

795-7269 SM4T82CAY Automotive 400W Bidirectional TVS, 82V

Transient Voltage Suppressors, STMicroelectronics

Approvals

AEC-Q101

Standards

ISO 7637-2, ISO 10605