SMBG48A-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG48A-E3/52 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This surface mount component operates in the TransZorb® series and is designed for general-purpose transient voltage suppression applications. The device is currently in active production status with RoHS3 compliance and unlimited moisture sensitivity level (MSL 1). Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

SMBG48A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 12421SMBG48A-E3/52 Datasheet

Current PartRFQ

SMBJ48A-TR

STMicroelectronicsIn Stock: 1819SMBJ48A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG48A-E3/52 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 48V
• Voltage - Breakdown (Min): 53.3V
• Voltage - Clamping (Max) @ Ipp: 77.4V
• Current - Peak Pulse (10/1000µs): ≥7.8A
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C to 150°C (TJ)
• Unidirectional Channels: 1
• Type: Zener
• Applications: General Purpose
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level: 1 (Unlimited)

The SMBJ48A-TR qualifies as a manufacturer-recommended substitute because it maintains identical voltage specifications, equivalent peak pulse current performance (8.1A vs. 7.8A), matching power dissipation, and identical thermal operating range. Both devices are surface mount, RoHS3 compliant, and designed for general-purpose transient suppression. Package differences (DO-215AA SMB Gull Wing vs. DO-214AA SMB) represent mechanical variations within the SMB form factor family and do not affect electrical substitutability.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG48A-E3/52 and SMBJ48A-TR are active production devices with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Availability and lead time requirements
• Packaging preference (Tape & Reel vs. Cut Tape & Digi-Reel®)
• Supplier inventory levels
• PCB layout constraints related to SMB package variant geometry

The SMBJ48A-TR offers a marginal advantage in peak pulse current rating (8.1A vs. 7.8A), providing additional design margin in transient suppression applications. Both devices maintain identical voltage clamping characteristics and thermal operating specifications, ensuring functional equivalence in circuit design.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ48A-TR directly replace the SMBG48A-E3/52 on an existing PCB?

A: Yes, with package footprint verification. Both devices use SMB form factor packages (DO-215AA and DO-214AA), which share compatible land patterns on most PCB designs. Confirm footprint compatibility with your PCB layout documentation before assembly.

Q: Are the voltage specifications identical between these two parts?

A: Yes. Both devices specify 48V reverse standoff voltage, 53.3V minimum breakdown voltage, and 77.4V maximum clamping voltage at peak pulse current. They are electrically equivalent for voltage suppression performance.

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

A: Both are SMB form factor packages used for surface mount TVS diodes. DO-215AA (Gull Wing) and DO-214AA (standard SMB) represent mechanical variants within the same family. Electrical performance is identical; physical dimensions and lead geometry differ slightly.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SMBG48A-E3/52 and SMBJ48A-TR are RoHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. They meet identical environmental and regulatory requirements.

Q: Which part should I select if both are available?

A: Selection depends on supply chain factors and packaging preference. The SMBJ48A-TR provides slightly higher peak pulse current capability (8.1A vs. 7.8A), offering additional design margin. Choose based on inventory availability, lead time, and your preferred packaging format (Tape & Reel vs. Cut Tape).