SMBG12A-M3/5B Equivalent & Substitute Parts

Part Overview

The SMBG12A-M3/5B 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 protection applications. The part is currently active in production and widely available in inventory. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, procurement preferences, or design flexibility needs.

Substiute Parts

SMBG12A-M3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1144SMBG12A-M3/5B Datasheet

Current PartRFQ

SMBG12A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12450SMBG12A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG12A-M3/5B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 12V
• Voltage - Breakdown (Min): 13.3V
• Voltage - Clamping (Max) @ Ipp: 19.9V
• Current - Peak Pulse (10/1000µs): 30.2A
• Power - Peak Pulse: 600W
• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Unidirectional Channels: 1
• Series: TransZorb®
• Base Product Number: SMBG12

The substitute part SMBG12A-E3/52 meets all electrical performance requirements and mechanical compatibility criteria. Both parts are manufactured by Vishay General Semiconductor - Diodes Division and share identical voltage suppression characteristics, peak pulse current ratings, and package specifications.

Parameter Comparison

*Operating temperature range differs. SMBG12A-M3/5B supports -65°C to 175°C; SMBG12A-E3/52 supports -55°C to 150°C. Selection depends on application temperature requirements.

Engineering Selection Recommendations

Both SMBG12A-M3/5B and SMBG12A-E3/52 are active products from Vishay General Semiconductor - Diodes Division with ROHS3 compliance and identical electrical performance specifications. Selection between these parts should be based on:

1. Operating temperature requirements: SMBG12A-M3/5B provides extended low-temperature operation to -65°C and high-temperature operation to 175°C. SMBG12A-E3/52 operates within -55°C to 150°C range.

2. Packaging and tape configuration: Both use DO-215AA (SMB Gull Wing) surface-mount packages. Verify tape reel specifications (M3/5B vs. E3/52 designations) match procurement and assembly equipment requirements.

3. Inventory availability: SMBG12A-E3/52 shows higher stock levels (12,400 pcs vs. 1,068 pcs), which may influence lead time and cost considerations.

4. Regulatory compliance: Both parts maintain ROHS3 compliance, REACH unaffected status, and identical moisture sensitivity ratings.

Frequently Asked Questions (FAQ)

Q: Can SMBG12A-E3/52 be used as a direct replacement for SMBG12A-M3/5B?

A: Yes, for applications operating within the -55°C to 150°C temperature range. Both parts deliver identical voltage suppression performance (12V standoff, 19.9V clamping, 30.2A peak pulse current) and use the same DO-215AA package. Verify your application's temperature requirements before substitution.

Q: What is the difference between the M3/5B and E3/52 designations?

A: These designations indicate different tape reel configurations and manufacturing batches from Vishay. The electrical and mechanical specifications are equivalent. The suffix differences relate to packaging and distribution logistics rather than component performance.

Q: Are both parts suitable for general-purpose transient voltage protection?

A: Yes. Both SMBG12A-M3/5B and SMBG12A-E3/52 are rated for general-purpose applications with identical peak pulse power handling (600W) and current ratings (30.2A).

Q: What is the operating temperature difference between these parts?

A: SMBG12A-M3/5B operates from -65°C to 175°C junction temperature. SMBG12A-E3/52 operates from -55°C to 150°C. Applications requiring operation below -55°C or above 150°C must use SMBG12A-M3/5B.

Q: Do both parts have the same moisture sensitivity rating?

A: Yes. Both parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions for storage or handling.

Q: Are there any compliance differences between these parts?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and carry identical regulatory certifications (ECCN: EAR99, HTSUS: 8541.10.0080).