SMBG12A-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG12A-E3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates within the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The part maintains an active product status with full RoHS3 compliance and unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity.

Substiute Parts

SMBG12A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 723SMBG12A-E3/5B Datasheet

Current PartRFQ

SMBJ12A-TR

STMicroelectronicsIn Stock: 3576SMBJ12A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG12A-E3/5B is determined by electrical and mechanical parameter equivalence within the TVS diode category. The following parameters establish substitution validity:

• 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
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Mounting Type: Surface Mount
• RoHS3 Compliance: Required
• MSL Rating: 1 (Unlimited)

The SMBJ12A-TR from STMicroelectronics meets all substitution criteria with equivalent electrical performance and compliance certifications. Package variation (DO-214AA vs. DO-215AA) represents a mechanical difference within the SMB form factor family, permitting direct functional substitution in surface mount applications.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG12A-E3/5B and SMBJ12A-TR maintain active product status with full RoHS3 compliance and REACH unaffected designation. Selection between these parts is based on availability, packaging preference, and supply chain requirements. The SMBJ12A-TR offers marginally higher peak pulse current (31A vs. 30.2A) while maintaining identical voltage and power specifications. Both components satisfy the electrical and environmental requirements for general-purpose TVS applications within the specified temperature range.

Frequently Asked Questions (FAQ)

Q: Can SMBJ12A-TR directly replace SMBG12A-E3/5B in existing designs?

A: Yes. Both parts share identical electrical specifications for voltage standoff, breakdown, clamping, and power dissipation. The package difference (DO-214AA vs. DO-215AA) represents a mechanical variation within the SMB form factor family suitable for surface mount assembly.

Q: What is the difference between DO-215AA and DO-214AA packages?

A: Both are SMB surface mount packages. DO-215AA (SMBG series) and DO-214AA (SMBJ series) are mechanically compatible within the SMB footprint classification, permitting direct substitution on standard surface mount PCBs.

Q: Are compliance certifications identical between these parts?

A: Yes. Both SMBG12A-E3/5B and SMBJ12A-TR carry ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity rating.

Q: Does the 0.8A difference in peak pulse current affect substitution validity?

A: No. The SMBJ12A-TR peak pulse current of 31A exceeds the SMBG12A-E3/5B specification of 30.2A, providing equivalent or superior performance within the same power envelope (600W).

Q: What is the operating temperature range for both parts?

A: Both components operate across -55°C to 150°C junction temperature, supporting identical thermal performance requirements.