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SMA4F170A The STMicroelectronics SMA4F170A is a TVS Diode designed for transient surge protection. It features a 170V breakdown voltage and a 275V clamping voltage, with a 400W peak pulse power rating.
Mfr Part #:

SMA4F170A

Available from 1 distributors
Mfr Name: STMicroelectronics
STMicroelectronics
The STMicroelectronics SMA4F170A is a TVS Diode designed for transient surge protection. It features a 170V breakdown voltage and a 275V clamping voltage, with a 400W peak pulse power rating.
✓ Total Stock: 10,000 pcs
$ Price Range: $0.99

SMA4F170A Available from 1 distributor

✓ Authorised
✓ Non-Authorised
Distributor Stock Pricing MOQ PKG Lead Time Date Code On Order Quantity On Order Delivery
Flip Electronics ✓
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10,000 pcs
On Request
10000 pcs On Request 1 On Request On Request On Request On Request On Request
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SMA4F170A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
AEC Qualified
Applications
Automotive Grade
Current
Industrial Grade
Lead Style
Medical Grade
Military Grade
Mounting Type
Operating Temperature
Power
Power Line Protection
SVHC Present
Storage Temperature
Supplier Device Package
Type
Unidirectional Channels
Voltage
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SMA4F170A Description

Short technical summary and product information.

The STMicroelectronics SMA4F170A is a unidirectional TVS (Transient Voltage Suppressor) diode designed to protect sensitive electronic circuits from transient surges. It operates within a wide temperature range of -55°C to 175°C.

 

Key electrical characteristics include a 170V breakdown voltage and a 275V clamping voltage at 1.4A. The diode offers a peak pulse power dissipation of 400W for a 10/1000 µs waveform and 2.5 kW for an 8/20 µs waveform. It exhibits low leakage current, with a maximum of 0.2 μA at 25°C and 1 μA at 85°C.

 

This TVS diode is housed in a surface mount DO-221AC, SMA Flat Leads package, also known as SMAflat. Its planar technology ensures compatibility with high-end circuits requiring low leakage and high junction temperature stability for long-term reliability.

 

The SMA4F170A is suitable for general-purpose applications requiring robust protection against voltage transients.

SMA4F170A Quick Information

Product Type: TVS Diode
Canonical Name: SMA4F170A TVS Diode
Subcategory: TVS Diodes

SMA4F170A Compliance

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

SMA4F170A Estimated Pricing

Qty Low High
1+ $0.99 $0.99

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

SMA4F170A Features

  • 400W peak pulse power dissipation.
  • 170V breakdown voltage.
  • 275V clamping voltage.
  • Low leakage current.
  • Surface mount SMAflat package.

SMA4F170A Applications

  • Protects sensitive circuits against transient surges
  • Suitable for high-end circuits requiring low leakage
  • Used in applications demanding high junction temperature
  • Compatible with IEC 61000-4-2 ESD protection
  • Ideal for surface mount PCB designs

SMA4F170A FAQs

7 frequently asked questions generated from this part’s specifications.
What is the peak pulse power dissipation of the SMA4F170A?

The peak pulse power dissipation is 400 W for a 10/1000 µs waveform and 2.5 kW for an 8/20 µs waveform.

What is the stand-off voltage range for the SMA4F series?

The stand-off voltage range is from 5 V to 188 V.

What is the maximum operating junction temperature?

The maximum operating junction temperature is 175 °C.

What is the breakdown voltage of the SMA4F170A?

The breakdown voltage is 170 V at 20 μA.

What is the clamping voltage for the SMA4F170A?

The clamping voltage is 275 V at 1.4A.

What is the peak pulse current rating?

The peak pulse current rating is 1.4 A for a 10/1000 µs waveform.

What type of package does the SMA4F170A use?

The SMA4F170A uses a DO-221AC, SMA Flat Leads package, also known as SMAflat.

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