SMBG70A-E3/52 Equivalent & Substitute Parts

Part Overview

The SMBG70A-E3/52 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 device is Active in product status and RoHS3 compliant. 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

SMBG70A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 986SMBG70A-E3/52 Datasheet

Current PartRFQ

SMBJ70A-TR

STMicroelectronicsIn Stock: 12994SMBJ70A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SMBG70A-E3/52 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 70V
• Voltage - Breakdown (Min): 77.8V
• Voltage - Clamping (Max) @ Ipp: 113V
• Current - Peak Pulse (10/1000µs): minimum 5.3A
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C ~ 150°C
• Surface Mount package compatibility (DO-215AA or DO-214AA)
• RoHS3 compliance

The SMBJ70A-TR from STMicroelectronics meets all specified electrical parameters and operates within the same temperature range. Both devices share identical voltage ratings and power dissipation capability. The SMBJ70A-TR provides equivalent performance with a peak pulse current of 5.5A, which exceeds the minimum requirement of 5.3A.

Parameter Comparison

Engineering Selection Recommendations

Both the SMBG70A-E3/52 and SMBJ70A-TR are Active products with ROHS3 compliance and REACH Unaffected status. Selection between these devices is based on:

• Electrical equivalence: Both devices meet the 70V reverse standoff voltage and 113V clamping voltage requirements with identical power dissipation ratings.
• Package compatibility: The SMBG70A-E3/52 uses DO-215AA (SMB Gull Wing) packaging, while the SMBJ70A-TR uses DO-214AA (SMB) packaging. Both are surface mount SMB packages with compatible footprints for standard PCB layouts.
• Current capability: The SMBJ70A-TR provides 5.5A peak pulse current, exceeding the 5.3A specification of the SMBG70A-E3/52.
• Regulatory compliance: Both devices maintain identical compliance certifications.

Frequently Asked Questions (FAQ)

Q: Can the SMBJ70A-TR directly replace the SMBG70A-E3/52 on existing PCBs?

A: Yes. Both devices use compatible SMB surface mount packages (DO-215AA and DO-214AA). Standard SMB footprints accommodate both package variants. Verify PCB layout compatibility with your design documentation.

Q: Are the voltage ratings identical between these two TVS diodes?

A: Yes. Both devices share identical reverse standoff voltage (70V), breakdown voltage (77.8V minimum), and clamping voltage (113V maximum) specifications.

Q: What is the difference in peak pulse current between these parts?

A: The SMBG70A-E3/52 is rated for 5.3A peak pulse current, while the SMBJ70A-TR is rated for 5.5A. The SMBJ70A-TR provides higher current handling capability within the same power dissipation envelope (600W).

Q: Do both parts meet the same compliance standards?

A: Yes. Both the SMBG70A-E3/52 and SMBJ70A-TR are ROHS3 compliant, REACH Unaffected, and classified under ECCN EAR99 with identical HTSUS codes.

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

A: Both devices operate across the identical temperature range of -55°C to 150°C junction temperature (TJ).