MASMBG20AE3 Equivalent & Substitute Parts

Part Overview

The MASMBG20AE3 is a unidirectional transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This surface-mount component operates across a wide temperature range of -65°C to 150°C and is qualified to MIL-PRF-19500 military standards. The device is currently in active production status with 942 pieces available in bulk packaging. Substitute parts are identified to address packaging format requirements, compliance certifications, or inventory availability while maintaining electrical and mechanical compatibility.

Substiute Parts

MASMBG20AE3

Microchip TechnologyIn Stock: 1031MASMBG20AE3 Datasheet

Current PartRFQ

SMBG20A-E3/52

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

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MASMBG20AE3 is determined by strict equivalence across the following electrical and mechanical parameters:

• Voltage Rating: Reverse standoff voltage of 20V, breakdown minimum of 22.2V, and clamping voltage maximum of 32.4V at peak pulse current
• Current Handling: Peak pulse current of 18.5A at 10/1000µs pulse width
• Power Dissipation: Peak pulse power rating of 600W
• Package Specification: DO-215AA surface-mount package with SMB gull wing configuration
• Topology: Unidirectional zener diode with single channel
• Temperature Range: Operating range of -65°C to 150°C junction temperature

The substitute part SMBG20A-E3/52 maintains identical electrical specifications and package form factor. Differences exist only in packaging format (tape & reel versus bulk), manufacturer (Vishay versus Microchip), operating temperature lower limit (-55°C versus -65°C), and compliance certifications (RoHS3 compliant versus non-compliant).

Parameter Comparison

Engineering Selection Recommendations

MASMBG20AE3 (Microchip Technology) is the primary selection when:

• Military-grade qualification per MIL-PRF-19500 is required
• Extended lower operating temperature of -65°C is necessary
• Bulk packaging format is preferred for inventory management
• RoHS non-compliance is acceptable for the application

SMBG20A-E3/52 (Vishay General Semiconductor) is the appropriate substitute when:

• RoHS3 compliance is mandated by design or regulatory requirements
• Tape & reel packaging format is required for automated assembly processes
• Operating temperature minimum of -55°C satisfies application requirements
• Higher inventory availability (3822 pieces) is advantageous for procurement
• TransZorb® series designation aligns with existing design documentation

Both parts maintain identical electrical performance across all critical parameters: voltage ratings, current handling, power dissipation, and package form factor. Selection between them depends on compliance certifications, packaging requirements, and temperature range specifications rather than electrical substitutability.

Frequently Asked Questions (FAQ)

Q: Can SMBG20A-E3/52 directly replace MASMBG20AE3 in all applications?

A: Direct replacement is possible when the application does not require MIL-PRF-19500 military qualification or extended lower temperature operation below -55°C. All electrical parameters and package specifications are identical. Verify compliance requirements and temperature range specifications for your specific application.

Q: What is the difference between bulk and tape & reel packaging?

A: Bulk packaging (MASMBG20AE3) supplies components in loose form, suitable for manual handling and smaller production runs. Tape & reel packaging (SMBG20A-E3/52) presents components on continuous carrier tape wound on reels, optimized for automated pick-and-place assembly equipment. Both formats contain the same component.

Q: Does the -55°C to -65°C operating temperature difference affect substitutability?

A: The MASMBG20AE3 extends the lower operating temperature to -65°C, while SMBG20A-E3/52 operates to -55°C. If your application requires operation below -55°C, the Microchip part is required. For applications with minimum operating temperatures above -55°C, both parts are functionally equivalent.

Q: Why does MASMBG20AE3 have MIL-PRF-19500 qualification while SMBG20A-E3/52 does not?

A: Military qualification is a manufacturing and testing certification specific to the Microchip production process. It does not indicate superior electrical performance but rather compliance with military procurement standards. Selection depends on whether your application or contract requires this certification.

Q: Are there any electrical performance differences between these parts?

A: No. Both parts share identical electrical specifications: 20V reverse standoff voltage, 22.2V minimum breakdown voltage, 32.4V maximum clamping voltage, 18.5A peak pulse current, and 600W peak pulse power rating. Differences are limited to packaging format, compliance certifications, and operating temperature lower limit.

Q: Which part should be selected for new designs?

A: For new designs, evaluate whether MIL-PRF-19500 military qualification is contractually required. If not required, SMBG20A-E3/52 offers RoHS3 compliance, which aligns with modern environmental regulations. If military qualification is necessary, select MASMBG20AE3. Both are active products with stable supply.