SMCG15A-M3/9AT Equivalent & Substitute Parts

Part Overview

The SMCG15A-M3/9AT 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 general-purpose transient voltage suppression applications. The device is currently active in production with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Substitute parts are identified when equivalent electrical and mechanical specifications are required due to inventory constraints, supply chain considerations, or packaging format preferences while maintaining identical functional performance.

Substiute Parts

SMCG15A-M3/9AT

Vishay General Semiconductor - Diodes DivisionIn Stock: 1162SMCG15A-M3/9AT Datasheet

Current PartRFQ

SMCG15A-E3/57T

Vishay General Semiconductor - Diodes DivisionIn Stock: 5061SMCG15A-E3/57T Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMCG15A-M3/9AT is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff: 15V (Typ)
• Voltage - Breakdown: 16.7V (Min)
• Voltage - Clamping: 24.4V (Max) @ Ipp
• Current - Peak Pulse: 61.5A (10/1000µs)
• Power - Peak Pulse: 1500W
• Package / Case: DO-215AB, SMC Gull Wing
• Mounting Type: Surface Mount
• Operating Temperature: -55°C to 150°C (TJ)
• Series: TransZorb®
• Type: Zener, Unidirectional

The substitute part SMCG15A-E3/57T meets all electrical and mechanical requirements. The difference between the main part and substitute lies solely in the tape and reel packaging format (supplier device package designation), which does not affect functional performance or circuit compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both SMCG15A-M3/9AT and SMCG15A-E3/57T are active production components with identical electrical specifications and mechanical compatibility. Selection between these parts should be based on:

• Packaging format availability and supply chain requirements
• Inventory levels: SMCG15A-E3/57T currently maintains higher stock (5013 Pcs) compared to SMCG15A-M3/9AT (1053 Pcs)
• Compliance requirements: Both parts meet ROHS3 compliance, REACH unaffected status, and EAR99 export classification
• Moisture sensitivity: Both parts carry MSL 1 rating, indicating unlimited shelf life under standard storage conditions

No functional performance difference exists between these parts. Circuit design, PCB layout, and thermal management considerations remain identical regardless of which part number is selected.

Frequently Asked Questions (FAQ)

Q: Can SMCG15A-E3/57T be used as a direct replacement for SMCG15A-M3/9AT in existing designs?

A: Yes. Both parts are electrically and mechanically identical. The only difference is the tape and reel packaging format. No circuit modifications, PCB layout changes, or design validation are required.

Q: What is the difference between the M3/9AT and E3/57T packaging designations?

A: These designations refer to different tape and reel configurations supplied by Vishay. Both formats contain the same DO-215AB, SMC Gull Wing surface mount component. The difference is in the carrier tape and reel specifications used for automated assembly equipment.

Q: Are there any compliance or certification differences between these parts?

A: No. Both parts carry identical certifications: ROHS3 compliance, REACH unaffected status, EAR99 export classification, and MSL 1 moisture sensitivity rating.

Q: What are the critical electrical parameters that define substitution eligibility?

A: Substitution is valid when the following parameters match exactly: 15V reverse standoff voltage, 16.7V minimum breakdown voltage, 24.4V maximum clamping voltage at Ipp, 61.5A peak pulse current, and 1500W peak pulse power rating.

Q: Can these parts be mixed in the same production batch?

A: Yes. Since both parts are functionally identical and carry the same compliance certifications, they can be used interchangeably in the same assembly without affecting product performance or reliability.