MSMBG20AE3 Equivalent & Substitute Parts

Part Overview

The MSMBG20AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection in surface-mount applications. This component features a 20V reverse standoff voltage with a 32.4V maximum clamping voltage and 18.5A peak pulse current capability. The device is housed in a DO-215AA (SMB Gull Wing) package and operates across the temperature range of -65°C to 150°C.

The MSMBG20AE3 maintains active product status with 781 units currently in stock. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support alternative sourcing strategies while maintaining electrical and mechanical compatibility.

Substiute Parts

MSMBG20AE3

Microchip TechnologyIn Stock: 870MSMBG20AE3 Datasheet

Current PartRFQ

SMBG20A-E3/52

Vishay General Semiconductor - Diodes DivisionIn Stock: 3849SMBG20A-E3/52 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the MSMBG20AE3 are qualified based on strict electrical and mechanical parameter matching. The following criteria determine substitution eligibility:

Electrical Parameters (Must Match):

• Voltage - Reverse Standoff (Typ): 20V
• Voltage - Breakdown (Min): 22.2V
• Voltage - Clamping (Max) @ Ipp: 32.4V
• Current - Peak Pulse (10/1000µs): 18.5A
• Power - Peak Pulse: 600W
• Type: Zener
• Unidirectional Channels: 1

Mechanical Parameters (Must Match):

• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Supplier Device Package: SMBG (DO-215AA)

Acceptable Variations:

• Operating Temperature Range: Minimum upper limit of 150°C required; lower limit may vary
• Packaging Format: Bulk or Tape & Reel (TR) formats are interchangeable for component selection
• RoHS Compliance: May differ between main part and substitutes
• Moisture Sensitivity Level: MSL 1 (Unlimited) maintained across all qualified substitutes

The SMBG20A-E3/52 manufactured by Vishay General Semiconductor meets all electrical and mechanical requirements for direct substitution with the MSMBG20AE3.

Parameter Comparison

Engineering Selection Recommendations

MSMBG20AE3 (Microchip Technology)

The MSMBG20AE3 is the primary component specification. This part carries Military grade qualification under MIL-PRF-19500 and operates across an extended temperature range of -65°C to 150°C. The device is RoHS non-compliant. Current inventory availability is 781 units in bulk packaging format.

SMBG20A-E3/52 (Vishay General Semiconductor)

The SMBG20A-E3/52 is a direct electrical and mechanical equivalent manufactured by Vishay General Semiconductor under the TransZorb® series designation. This substitute part meets all critical electrical parameters and package requirements. The operating temperature range is -55°C to 150°C, which is compatible with the primary part for applications not requiring the extended -65°C lower limit. The SMBG20A-E3/52 is RoHS3 compliant and available in Tape & Reel packaging with 3822 units in current inventory.

Selection Basis:

Both parts are active products with identical electrical performance characteristics. The SMBG20A-E3/52 provides an alternative sourcing option with superior inventory availability and RoHS3 compliance. Selection between these parts depends on specific application requirements regarding temperature range extension below -55°C and regulatory compliance mandates.

Frequently Asked Questions (FAQ)

Q: Can the SMBG20A-E3/52 replace the MSMBG20AE3 in all applications?

A: The SMBG20A-E3/52 is electrically and mechanically equivalent to the MSMBG20AE3 for all applications operating within the -55°C to 150°C temperature range. Applications requiring operation below -55°C must use the MSMBG20AE3 to maintain the -65°C lower temperature limit.

Q: What are the differences in packaging between these parts?

A: The MSMBG20AE3 is supplied in Bulk packaging, while the SMBG20A-E3/52 is supplied in Tape & Reel (TR) format. Both use the identical DO-215AA (SMB Gull Wing) package and are surface-mount compatible. Packaging format does not affect electrical performance or PCB mounting compatibility.

Q: Are there RoHS compliance differences between these parts?

A: The MSMBG20AE3 is RoHS non-compliant, while the SMBG20A-E3/52 is RoHS3 compliant. Applications subject to RoHS regulatory requirements must use the SMBG20A-E3/52.

Q: Do both parts have identical electrical specifications?

A: Yes. Both parts share identical specifications for voltage ratings (20V reverse standoff, 22.2V breakdown minimum, 32.4V clamping maximum), peak pulse current (18.5A), peak pulse power (600W), and all other electrical parameters. Both are unidirectional Zener-type TVS diodes.

Q: What is the moisture sensitivity level for these parts?

A: Both the MSMBG20AE3 and SMBG20A-E3/52 have a Moisture Sensitivity Level (MSL) of 1, indicating unlimited shelf life without moisture control requirements.

Q: Can these parts be used interchangeably on the same PCB assembly?

A: Yes. Both parts use the identical DO-215AA package with SMB Gull Wing configuration and surface-mount technology. PCB footprints, solder pad layouts, and assembly processes are identical.

Q: What certifications apply to the MSMBG20AE3?

A: The MSMBG20AE3 carries Military grade qualification under MIL-PRF-19500. The SMBG20A-E3/52 does not carry this military qualification.

Q: Are export restrictions different between these parts?

A: Both parts are classified under ECCN EAR99 and share the same HTSUS code (8541.10.0080), indicating identical export control treatment.