SMAJ48AHM3/I Equivalent & Substitute Parts

Part Overview

The SMAJ48AHM3/I is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications. This surface mount component operates with a 48V reverse standoff voltage and provides 77.4V maximum clamping voltage at peak pulse current. The part is AEC-Q101 qualified for automotive-grade reliability and ROHS3 compliant.

The SMAJ48AHM3/I is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain flexibility for new production runs and field replacements.

Substiute Parts

SMAJ48AHM3/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1006SMAJ48AHM3/I Datasheet

Current PartRFQ

SMAJ48AHM3_A/I

Vishay General Semiconductor - Diodes DivisionIn Stock: 1179SMAJ48AHM3_A/I Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMAJ48AHM3/I is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 48V
• Voltage - Breakdown (Min): 53.3V
• Voltage - Clamping (Max) @ Ipp: 77.4V
• Current - Peak Pulse (10/1000µs): 5.2A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Unidirectional Channels: 1
• Type: Zener

The substitute part SMAJ48AHM3_A/I maintains identical electrical specifications and mechanical compatibility. The primary difference is packaging configuration (Tape & Reel versus standard packaging) and product status (Active versus Discontinued).

Parameter Comparison

Engineering Selection Recommendations

The SMAJ48AHM3_A/I is a direct functional equivalent to the SMAJ48AHM3/I. Both parts share identical electrical characteristics, mechanical dimensions, and automotive-grade certifications (AEC-Q101). The substitute part maintains ROHS3 compliance and unlimited moisture sensitivity rating.

Selection between these parts is determined by packaging requirements and supply availability. The SMAJ48AHM3_A/I is currently in active production status, making it the preferred choice for new designs and production orders. The Tape & Reel packaging of the substitute part is standard for high-volume manufacturing and automated assembly processes.

Both parts are suitable for telecom applications requiring 48V transient voltage suppression with 5.2A peak pulse current handling capability.

Frequently Asked Questions (FAQ)

Q: Can SMAJ48AHM3_A/I be used as a direct replacement for SMAJ48AHM3/I?

A: Yes. Both parts are electrically and mechanically identical. They share the same voltage ratings (48V standoff, 77.4V clamping), current handling (5.2A peak pulse), package type (DO-214AC, SMA), and automotive qualifications (AEC-Q101).

Q: What is the difference between the two part numbers?

A: The primary difference is packaging configuration. SMAJ48AHM3_A/I is supplied in Tape & Reel format, while SMAJ48AHM3/I uses standard packaging. Additionally, SMAJ48AHM3_A/I is currently in active production status.

Q: Are there any thermal or operating condition differences?

A: No. Both parts operate across the identical temperature range (-55°C to 150°C junction temperature) and maintain the same 400W peak pulse power rating.

Q: Is the Tape & Reel packaging compatible with existing PCB assembly processes?

A: Yes. Tape & Reel packaging is standard for surface mount components and is compatible with automated pick-and-place assembly equipment used in standard manufacturing processes.

Q: Do both parts meet the same compliance standards?

A: Yes. Both SMAJ48AHM3/I and SMAJ48AHM3_A/I are ROHS3 compliant, AEC-Q101 qualified, and carry MSL 1 (Unlimited) moisture sensitivity ratings.