MXLSMBG20A Equivalent & Substitute Parts

Part Overview

The MXLSMBG20A is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology. This surface mount component is designed for general-purpose transient voltage suppression applications, featuring a 20V reverse standoff voltage and 32.4V maximum clamping voltage. The device is qualified to MIL-PRF-19500 military standards and operates across an extended temperature range of -65°C to 150°C. As an active product with established supply availability, equivalent parts from alternative manufacturers may be required due to procurement constraints, supply chain considerations, or specific compliance requirements.

Substiute Parts

MXLSMBG20A

Microchip TechnologyIn Stock: 882MXLSMBG20A 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 MXLSMBG20A is determined by electrical and mechanical parameter equivalence. The following criteria establish functional interchangeability:

Electrical Parameters (Critical):

• 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

Mechanical Parameters (Critical):

• Package / Case: DO-215AA, SMB Gull Wing
• Mounting Type: Surface Mount
• Unidirectional Channels: 1

Device Characteristics (Critical):

• Type: Zener
• Applications: General Purpose

Substitute parts must match all critical electrical and mechanical parameters. Operating temperature range variations within the specified limits do not preclude substitution. Packaging format (Tape & Reel versus bulk) does not affect functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

SMBG20A-E3/52 (Vishay General Semiconductor - Diodes Division) is a direct functional equivalent to the MXLSMBG20A. Both devices are active products with identical electrical specifications and mechanical packaging.

Compliance Considerations:

The SMBG20A-E3/52 is ROHS3 compliant, whereas the MXLSMBG20A is RoHS non-compliant. Selection between these parts depends on end-application compliance requirements. Both devices are REACH Unaffected and carry EAR99 ECCN classification.

Temperature Range:

The MXLSMBG20A operates from -65°C to 150°C, while the SMBG20A-E3/52 operates from -55°C to 150°C. Applications requiring operation below -55°C require the MXLSMBG20A. For applications within the -55°C to 150°C range, both parts are suitable.

Military Qualification:

The MXLSMBG20A carries MIL-PRF-19500 qualification. The SMBG20A-E3/52 specification does not indicate military qualification. Applications requiring military-grade components must use the MXLSMBG20A.

Packaging Format:

The SMBG20A-E3/52 is supplied in Tape & Reel format. The MXLSMBG20A packaging format is not specified. Packaging format does not affect electrical or mechanical compatibility.

Frequently Asked Questions (FAQ)

Q: Can the SMBG20A-E3/52 replace the MXLSMBG20A in all applications?

A: The SMBG20A-E3/52 is electrically and mechanically equivalent for applications operating within the -55°C to 150°C temperature range. Applications requiring operation below -55°C or military qualification (MIL-PRF-19500) must use the MXLSMBG20A.

Q: What is the significance of the DO-215AA package designation?

A: DO-215AA is the industry-standard package designation for SMB Gull Wing surface mount diodes. Both the MXLSMBG20A and SMBG20A-E3/52 use this identical package, ensuring mechanical and thermal compatibility on printed circuit boards.

Q: Does RoHS compliance affect functional performance?

A: RoHS compliance relates to material composition and environmental regulations, not functional performance. Both RoHS-compliant and non-compliant versions of this TVS diode exhibit identical electrical characteristics. Selection depends on end-product regulatory requirements.

Q: Are the voltage specifications identical between these parts?

A: Yes. Both devices feature 20V reverse standoff voltage, 22.2V minimum breakdown voltage, and 32.4V maximum clamping voltage at 18.5A peak pulse current. These specifications are identical and establish functional equivalence.

Q: What does "Unidirectional Channels: 1" mean?

A: This indicates a single-channel TVS diode with one p-n junction, suitable for protecting against transient overvoltage in a single polarity configuration. Both substitute parts share this characteristic.

Q: Can these parts be used interchangeably on the same printed circuit board?

A: Yes. Both devices use the DO-215AA SMB Gull Wing package with identical pin configuration and footprint, enabling direct substitution on the same PCB layout without modification.