SMAJ170A The SMAJ170A is a 400W surface mount TVS diode from Littelfuse, designed for protecting sensitive electronics from voltage transients. Key specs include 170V reverse standoff voltage and 275V clamping voltage.
Mfr Part #:

SMAJ170A

Available from 1 distributors
Mfr Name: Littelfuse Inc.
Littelfuse Inc.
The SMAJ170A is a 400W surface mount TVS diode from Littelfuse, designed for protecting sensitive electronics from voltage transients. Key specs include 170V reverse standoff voltage and 275V clamping voltage.
Total Stock: 300 pcs

SMAJ170A Available from 1 distributor

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SMAJ170A Specifications Quick View

Most important parameters for selection – full specs in datasheet.
Category
Manufacturer Name
Applications
Current
ESD Rating
Forward Voltage (Vf)
Halogen Free
Mounting Type
Operating Temperature
Peak Forward Surge Current (Ifsm)
Power
Power Dissipation (PD)
Power Line Protection
Response Time
Reverse Standoff Voltage (Vrwm)
Storage Temperature Range
Supplier Device Package
Tape & Reel
Thermal Resistance Junction to Ambient (RθJA)
Thermal Resistance Junction to Lead (RθJL)
Type
Unidirectional Channels
Voltage

SMAJ170A Description

Short technical summary and product information.

The Littelfuse SMAJ170A is a unidirectional transient voltage suppression (TVS) diode designed for general-purpose circuit protection. It provides a reverse standoff voltage of 170 V and a maximum clamping voltage of 275 V under a 10/1000µs waveform, with a peak pulse power rating of 400 W. The device responds to transient events in less than 1.0 ps (typical) and meets IEC 61000-4-2 ESD protection up to 30 kV (air and contact).

 

This TVS diode is housed in a compact DO-214AC (SMA) surface-mount package, suitable for automated assembly. It features glass passivated junction for reliability and operates across a junction temperature range of -65°C to 150°C. The device is RoHS3 compliant, halogen free, and has an MSL rating of 1 (unlimited).

 

Typical applications include protecting I/O interfaces, VCC buses, and other vulnerable circuits in telecom, computer, industrial, and consumer electronic devices. The SMAJ170A is a single-channel unidirectional device with a peak forward surge current rating of 60 A (8.3ms).

SMAJ170A Quick Information

Product Type: TVS Diode
Series: SMAJ
Canonical Name: Littelfuse SMAJ170A TVS Diode, 170V Reverse Standoff, 275V Clamping, DO-214AC
Subcategory: Unidirectional TVS Diode

SMAJ170A Compliance

RoHS Status: RoHS Compliant
Moisture Sensitivity Level (MSL): 1 Unlimited
REACH Status: Non-Compliant
Lead Free: Pb-free E3

SMAJ170A Features

  • 400W peak pulse power at 10/1000µs.
  • 170V reverse standoff voltage protection.
  • 275V clamping voltage with 1.5A peak current.
  • Fast response time less than 1.0ps.
  • Unidirectional TVS diode in DO-214AC (SMA).

SMAJ170A Applications

  • Protects I/O interfaces from voltage transients.
  • Ideal for VCC bus protection in electronics.
  • Use in telecom and industrial equipment.
  • Suitable for consumer electronic circuits.

SMAJ170A FAQs

5 frequently asked questions generated from this part’s specifications.
What is the reverse standoff voltage (VRWM) of SMAJ170A?

170 V

What is the clamping voltage of SMAJ170A?

275 V (maximum at 10/1000µs waveform)

What is the peak pulse current rating of SMAJ170A?

1.5 A (maximum at 10/1000µs waveform)

What package does SMAJ170A come in?

DO-214AC (SMA) surface mount package

What is the peak pulse power rating of SMAJ170A?

400 W (maximum at 10/1000µs waveform)

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