SMA4F85AY The STMicroelectronics SMA4F85AY is a TVS Diode designed for automotive applications. It offers a 400W peak pulse power handling capability and surface mount packaging.
Mfr Part #:

SMA4F85AY

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics SMA4F85AY is a TVS Diode designed for automotive applications. It offers a 400W peak pulse power handling capability and surface mount packaging.
Total Stock: 10,000 pcs
$ Price Range: $0.99

SMA4F85AY Available from 1 distributor

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10,000 pcs
10000 pcs On Request 1 On Request On Request On Request On Request On Request

SMA4F85AY Specifications Quick View

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

SMA4F85AY Description

Short technical summary and product information.

The STMicroelectronics SMA4F85AY is a unidirectional TVS Diode with a standoff voltage of 85V and a breakdown voltage of 13.3V. It can clamp voltage to 25.3V at a peak pulse current of 20.1A, with a peak pulse power rating of 400W.

 

This component is designed for automotive applications and features a surface mount package (DO-221AC, SMA Flat Leads) in a SMAflat supplier device package. It operates within a temperature range of -55°C to 175°C (TJ).

 

With 1 channel for protection and no specific power line protection, the SMA4F85AY is suitable for general-purpose transient voltage suppression needs within its specified parameters.

SMA4F85AY Quick Information

Product Type: TVS Diode
Series: SMA4F
Canonical Name: SMA4F85AY TVS Diode
Subcategory: TVS Diodes

SMA4F85AY Compliance

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

SMA4F85AY Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

SMA4F85AY Features

  • Automotive TVS Diode for transient suppression.
  • 85V reverse standoff voltage.
  • 20.1A peak pulse current capability.
  • 400W peak pulse power rating.
  • Surface mount SMAflat package.

SMA4F85AY Applications

  • Used in automotive electronic control units
  • Protects sensitive circuits from voltage transients
  • Suitable for surface mount automotive applications
  • Provides unidirectional TVS diode protection
  • Ideal for 12V automotive electrical systems

SMA4F85AY FAQs

7 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage of the SMA4F85AY?

85V.

What is the breakdown voltage?

13.3V minimum.

What is the clamping voltage?

25.3V maximum at 20.1A.

What is the peak pulse current rating?

20.1A (10/1000µs).

What is the package type?

DO-221AC, SMA Flat Leads (SMAflat).

What is the operating temperature range?

-55°C to 175°C (junction).

Is this device unidirectional?

Yes, it is a unidirectional Zener TVS diode with one channel.

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