SMAJ7.5AHM3/H Equivalent & Substitute Parts

Part Overview

The SMAJ7.5AHM3/H is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for telecom applications requiring transient overvoltage protection. This component features a 7.5V reverse standoff voltage with a 12.9V maximum clamping voltage and 31A peak pulse current capability in a surface mount DO-214AC (SMA) package. The part is AEC-Q101 qualified for automotive-grade reliability and ROHS3 compliant.

The SMAJ7.5AHM3/H is currently discontinued at DiGi Electronics. Identifying equivalent substitute parts ensures design continuity and maintains supply chain availability for applications requiring identical electrical and mechanical specifications.

Substiute Parts

SMAJ7.5AHM3/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 806SMAJ7.5AHM3/H Datasheet

Current PartRFQ

SMAJ7.5AHM3_A/H

Vishay General Semiconductor - Diodes DivisionIn Stock: 906SMAJ7.5AHM3_A/H Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the SMAJ7.5AHM3/H is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 7.5V (Typ)
• Voltage - Clamping (Max) @ Ipp: 12.9V
• Current - Peak Pulse (10/1000µs): 31A
• Power - Peak Pulse: 400W
• Package / Case: DO-214AC, SMA
• Mounting Type: Surface Mount
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Grade: Automotive
• Qualification: AEC-Q101
• RoHS Status: ROHS3 Compliant

The SMAJ7.5AHM3_A/H meets all these criteria and is classified as a direct manufacturer equivalent. The primary distinction is packaging format (Tape & Reel vs. standard packaging) and active product status, which does not affect electrical or mechanical compatibility.

Parameter Comparison

Engineering Selection Recommendations

The SMAJ7.5AHM3_A/H is a direct electrical and mechanical equivalent to the SMAJ7.5AHM3/H. Both components share identical electrical specifications, automotive-grade qualification (AEC-Q101), and ROHS3 compliance. The SMAJ7.5AHM3_A/H maintains active product status, ensuring continued availability and supply chain support.

The only operational difference is packaging format: the substitute is supplied in Tape & Reel (TR) configuration, which is standard for high-volume manufacturing and automated assembly processes. This packaging format does not affect component performance or reliability.

For applications requiring the SMAJ7.5AHM3/H, the SMAJ7.5AHM3_A/H provides full functional and compliance equivalence with improved supply availability.

Frequently Asked Questions (FAQ)

Q: Are the SMAJ7.5AHM3/H and SMAJ7.5AHM3_A/H electrically identical?

A: Yes. Both components have identical voltage ratings (7.5V reverse standoff, 12.9V clamping), current specifications (31A peak pulse), power dissipation (400W), and operating temperature range (-55°C ~ 150°C). They are manufactured by the same supplier using the same TransZorb® series specifications.

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

A: The primary difference is packaging format. The SMAJ7.5AHM3/H uses standard packaging, while the SMAJ7.5AHM3_A/H is supplied in Tape & Reel (TR) format. Additionally, the SMAJ7.5AHM3_A/H maintains active product status, whereas the original part is discontinued.

Q: Can I use the SMAJ7.5AHM3_A/H as a direct replacement on my PCB?

A: Yes. Both parts use the identical DO-214AC (SMA) surface mount package with the same pinout, footprint, and soldering requirements. No PCB modifications are necessary.

Q: Are both parts AEC-Q101 qualified?

A: Yes. Both the SMAJ7.5AHM3/H and SMAJ7.5AHM3_A/H carry AEC-Q101 automotive-grade qualification and are suitable for automotive and telecom applications.

Q: Is the Tape & Reel packaging suitable for my assembly process?

A: Tape & Reel packaging is the standard format for automated pick-and-place assembly. If your manufacturing process uses manual assembly or requires bulk packaging, consult your supplier regarding alternative packaging options for the SMAJ7.5 series.

Q: Do both parts meet the same compliance standards?

A: Yes. Both components are ROHS3 compliant, REACH unaffected, and carry identical moisture sensitivity levels (MSL 1 - Unlimited). They meet the same regulatory and environmental requirements.