SMBG48A-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG48A-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 Active product status and is RoHS3 compliant. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative packaging formats are required.

Substiute Parts

SMBG48A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1097SMBG48A-E3/5B Datasheet

Current PartRFQ

SMBJ48A-TR

STMicroelectronicsIn Stock: 1819SMBJ48A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SMBG48A-E3/5B is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 48V
• Voltage - Breakdown (Min): 53.3V
• Voltage - Clamping (Max) @ Ipp: 77.4V
• Current - Peak Pulse (10/1000µs): minimum 7.8A
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Unidirectional Channels: 1
• Mounting Type: Surface Mount
• RoHS Status: ROHS3 Compliant

The SMBJ48A-TR manufactured by STMicroelectronics qualifies as a direct substitute. This part maintains identical voltage specifications (48V standoff, 53.3V breakdown, 77.4V clamping) and thermal operating range. The peak pulse current specification of 8.1A exceeds the minimum requirement of 7.8A, and power dissipation remains at 600W. Both parts are unidirectional, surface mount, RoHS3 compliant, and feature MSL 1 ratings. The primary difference is the package designation: SMBG48A-E3/5B uses DO-215AA (SMB Gull Wing), while SMBJ48A-TR uses DO-214AA (SMB). Both packages are mechanically compatible surface mount formats suitable for equivalent PCB footprints.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG48A-E3/5B and SMBJ48A-TR maintain Active product status and full RoHS3 compliance. Selection between these parts should be based on packaging availability and supply chain requirements. The SMBJ48A-TR offers higher peak pulse current capability (8.1A versus 7.8A), providing additional margin in transient suppression applications. Both parts are REACH Unaffected and classified under ECCN EAR99, meeting identical regulatory requirements. Moisture sensitivity ratings are equivalent at MSL 1 (Unlimited), eliminating moisture-related handling constraints. The choice between DO-215AA (Gull Wing) and DO-214AA (SMB) packaging depends on PCB design specifications and assembly equipment compatibility.

Frequently Asked Questions (FAQ)

Q: Can SMBJ48A-TR replace SMBG48A-E3/5B in existing designs?

A: Yes. Both parts maintain identical voltage specifications (48V standoff, 53.3V breakdown, 77.4V clamping), thermal operating range (-55°C ~ 150°C), and power dissipation (600W). The SMBJ48A-TR provides equal or superior performance with 8.1A peak pulse current versus 7.8A. Package compatibility depends on PCB footprint design; DO-215AA (Gull Wing) and DO-214AA (SMB) are both surface mount formats with similar mechanical envelopes.

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

A: Substitution is determined by matching: Voltage - Reverse Standoff (48V), Voltage - Breakdown (53.3V minimum), Voltage - Clamping (77.4V maximum), Current - Peak Pulse (minimum 7.8A), Power - Peak Pulse (600W), Operating Temperature Range (-55°C ~ 150°C), and Unidirectional Channel configuration (1 channel). All parameters must align within specified tolerances.

Q: Are there packaging considerations when switching between these parts?

A: Yes. SMBG48A-E3/5B uses DO-215AA (SMB Gull Wing) packaging, while SMBJ48A-TR uses DO-214AA (SMB) packaging. Both are surface mount formats, but PCB footprints and reflow profiles may differ. Verify footprint compatibility with your PCB design and assembly process specifications before implementation.

Q: Do both parts meet the same compliance and regulatory standards?

A: Yes. Both SMBG48A-E3/5B and SMBJ48A-TR are RoHS3 compliant, REACH Unaffected, and classified under ECCN EAR99. Moisture Sensitivity Level is identical at MSL 1 (Unlimited) for both parts, eliminating moisture-related storage and handling constraints.

Q: Which part offers better performance in transient suppression applications?

A: The SMBJ48A-TR provides higher peak pulse current capability at 8.1A compared to 7.8A for the SMBG48A-E3/5B. This additional current margin may provide enhanced transient suppression performance in high-stress applications, though both parts meet the 600W power dissipation requirement identically.