SMAJ530HM3_A/I Equivalent & Substitute Parts

Part Overview

The SMAJ530HM3_A/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This surface mount component is designed for transient overvoltage protection in telecom applications, featuring a 530V minimum breakdown voltage and 760V maximum clamping voltage. The part is currently discontinued at DiGi Electronics, making equivalent substitutes necessary for ongoing design support and procurement.

Substiute Parts

SMAJ530HM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1023SMAJ530HM3_A/I Datasheet

Current PartRFQ

SMAJ530HM3_B/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 922SMAJ530HM3_B/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMAJ530HM3_A/I is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 477V
• Voltage - Breakdown (Min): 530V
• Voltage - Clamping (Max) @ Ipp: 760V
• Current - Peak Pulse (10/1000µs): 400mA
• Power - Peak Pulse: 300W
• Unidirectional Channels: 1
• Package / Case: DO-214AC, SMA
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101

The substitute part SMAJ530HM3_B/I maintains identical electrical specifications and mechanical compatibility. The primary difference is packaging format (Tape & Reel versus bulk) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The SMAJ530HM3_B/I is a direct functional equivalent to the SMAJ530HM3_A/I. Both parts share identical electrical performance specifications, thermal operating range, and automotive-grade qualification (AEC-Q101). The SMAJ530HM3_B/I is the recommended substitute due to its Active product status, ensuring long-term availability and supply chain continuity.

The packaging difference (Tape & Reel versus bulk) does not affect electrical or mechanical compatibility. Selection between these parts should be based on procurement volume requirements and assembly process specifications.

Frequently Asked Questions (FAQ)

Q: Can SMAJ530HM3_B/I be used as a direct replacement for SMAJ530HM3_A/I?

A: Yes. Both parts are electrically and mechanically identical across all critical parameters: breakdown voltage (530V minimum), clamping voltage (760V maximum), peak pulse current (400mA), and package format (DO-214AC, SMA). The only difference is packaging format and product status.

Q: What is the significance of the packaging format difference?

A: The SMAJ530HM3_A/I is supplied in bulk packaging, while the SMAJ530HM3_B/I is supplied in Tape & Reel (TR) format. This affects handling and assembly processes but does not impact electrical performance or board-level compatibility.

Q: Are both parts automotive-qualified?

A: Yes. Both SMAJ530HM3_A/I and SMAJ530HM3_B/I carry Automotive grade classification and AEC-Q101 qualification, meeting automotive reliability standards.

Q: Why is the SMAJ530HM3_A/I discontinued?

A: The SMAJ530HM3_A/I is discontinued at DiGi Electronics. The SMAJ530HM3_B/I remains Active and is the recommended source for ongoing procurement.

Q: Are there any thermal or environmental differences between these parts?

A: No. Both parts operate across the identical temperature range (-55°C to 150°C junction temperature) and maintain the same moisture sensitivity level (MSL 1, Unlimited).