SMBG15A-E3/5B Equivalent & Substitute Parts

Part Overview

The SMBG15A-E3/5B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division. This component is designed for general-purpose transient voltage protection in surface-mount applications. The part operates with a 15V reverse standoff voltage and provides 24.4V maximum clamping voltage at peak pulse current. The SMBG15A-E3/5B maintains Active product status and is fully RoHS3 compliant. Equivalent and substitute parts are identified based on matching electrical performance parameters and compatible packaging specifications.

Substiute Parts

SMBG15A-E3/5B

Vishay General Semiconductor - Diodes DivisionIn Stock: 1041SMBG15A-E3/5B Datasheet

Current PartRFQ

SMBG15A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 4544SMBG15A-E3/52 Datasheet

DirectRFQ

SMBJ15A-TR

STMicroelectronicsIn Stock: 31230SMBJ15A-TR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SMBG15A-E3/5B are identified based on strict electrical parameter matching within the Transient Voltage Suppressor category. The critical parameters determining substitution eligibility are:

• Voltage - Reverse Standoff: 15V (Typ)
• Voltage - Clamping (Max) @ Ipp: 24.4V
• Current - Peak Pulse (10/1000µs): 24.6A minimum
• Power - Peak Pulse: 600W
• Operating Temperature Range: -55°C ~ 150°C (TJ)
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Parts meeting these electrical specifications are classified as direct equivalents or manufacturer-recommended substitutes. Packaging variations (DO-215AA versus DO-214AA) are noted but do not preclude substitution when board layout accommodates the alternative package footprint.

Parameter Comparison

Engineering Selection Recommendations

All three parts maintain Active product status and are fully compliant with RoHS3 and REACH regulations. The SMBG15A-E3/5B and SMBG15A-E3/52 are direct equivalents from the same manufacturer, differing only in packaging configuration (Tape & Reel variant designation). The SMBJ15A-TR from STMicroelectronics meets all critical electrical parameters with a marginally higher peak pulse current specification (25.1A versus 24.6A), providing equivalent or superior performance. Package compatibility must be verified: the SMBG series uses DO-215AA (SMB Gull Wing) while the SMBJ series uses DO-214AA (SMB). Both packages are surface-mount compatible, but PCB footprint design must accommodate the selected package variant.

Frequently Asked Questions (FAQ)

Q: Can SMBG15A-E3/52 be used as a direct replacement for SMBG15A-E3/5B?

A: Yes. Both parts are manufactured by Vishay and share identical electrical specifications. The designation difference reflects packaging configuration only. Verify that your assembly process supports the specified tape and reel format.

Q: Is the SMBJ15A-TR from STMicroelectronics a suitable substitute?

A: Yes. The SMBJ15A-TR meets all critical electrical parameters: 15V reverse standoff, 24.4V clamping voltage, and 600W peak pulse power. The peak pulse current is 25.1A, which exceeds the 24.6A requirement. The package is DO-214AA (SMB) instead of DO-215AA (SMB Gull Wing). Confirm PCB footprint compatibility before selection.

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

A: Both are surface-mount SMB packages with similar dimensions. DO-215AA features gull-wing leads, while DO-214AA uses standard SMB lead configuration. PCB land patterns differ slightly. Consult package datasheets and your PCB design specifications to ensure compatibility.

Q: Are all three parts RoHS3 compliant?

A: Yes. SMBG15A-E3/5B, SMBG15A-E3/52, and SMBJ15A-TR are all RoHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.

Q: What operating temperature range do these parts support?

A: All three parts operate across -55°C to 150°C junction temperature range, suitable for industrial and commercial applications.

Q: Can these parts be used interchangeably in existing designs?

A: Electrical interchangeability is confirmed. Physical interchangeability depends on PCB footprint design. Verify package compatibility (DO-215AA versus DO-214AA) with your board layout before substitution.