SMA4F170AY SMA4F170AY is a 170V standoff, 275V clamping unidirectional Zener TVS diode from STMicroelectronics. It delivers 400W peak pulse power and 1.4A peak pulse current.
Mfr Part #:

SMA4F170AY

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
SMA4F170AY is a 170V standoff, 275V clamping unidirectional Zener TVS diode from STMicroelectronics. It delivers 400W peak pulse power and 1.4A peak pulse current.
Total Stock: 10,000 pcs
$ Price Range: $0.99

SMA4F170AY Available from 1 distributor

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SMA4F170AY Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Current
Mounting Type
Operating Temperature
Power
Power Line Protection
Supplier Device Package
Supplier Package
Type
Unidirectional Channels
Voltage

SMA4F170AY Description

Short technical summary and product information.

The SMA4F170AY is a unidirectional Zener TVS diode from STMicroelectronics designed for overvoltage protection in automotive applications. It features a standoff voltage of 170V and a maximum clamping voltage of 275V, ensuring sensitive downstream components are protected from voltage transients.

 

With a peak pulse power rating of 400W and a peak pulse current of 1.4A, this device can handle moderate surge events. It operates over a wide temperature range of -55°C to 175°C, making it suitable for harsh automotive environments.

 

The SMA4F170AY is housed in a surface-mount DO-221AC (SMA Flat Leads) package, also known as SMAflat, which offers a low-profile design for space-constrained PCB layouts. It is RoHS3 compliant and has an MSL of 1 (unlimited).

SMA4F170AY Quick Information

Product Type: TVS Diode
Canonical Name: SMA4F170AY TVS Diode, 170V Standoff, 275V Clamping, SMAflat
Subcategory: Zener TVS

SMA4F170AY Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: REACH Unaffected

SMA4F170AY Estimated Pricing

Qty Low High
1+ $0.99 $0.99

Estimated market price range - modelled values for guidance only, not live distributor offers.

SMA4F170AY Features

  • 170V standoff voltage for overvoltage protection.
  • 275V maximum clamping voltage.
  • 400W peak pulse power handling.
  • 1.4A peak pulse current capability.
  • Surface-mount SMAflat package for compact designs.

SMA4F170AY Applications

  • Used in automotive electronic control units
  • Protects sensitive circuits from voltage transients
  • Suitable for surface mount PCB designs
  • Provides unidirectional TVS protection

SMA4F170AY FAQs

4 frequently asked questions generated from this part’s specifications.
What is the standoff voltage of the SMA4F170AY?

The standoff voltage is 170V.

What is the clamping voltage of the SMA4F170AY?

The maximum clamping voltage is 275V.

What is the peak pulse current rating?

The peak pulse current is 1.4A.

What package does the SMA4F170AY come in?

It comes in a DO-221AC (SMA Flat Leads) surface-mount package, also known as SMAflat.

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