MXSMCGLCE28AE3/TR Equivalent & Substitute Parts

Part Overview

The MXSMCGLCE28AE3/TR is a unidirectional Zener-type Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This surface-mount component is designed for general-purpose transient voltage protection applications. The device features a 28V reverse standoff voltage with a 45.5V maximum clamping voltage and 33A peak pulse current capability. The part is currently in active production status with full RoHS3 compliance and military-grade qualification per MIL-PRF-19500. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to supply constraints, design flexibility, or inventory availability.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	28	V
Voltage - Breakdown (Min)	31.1	V
Voltage - Clamping (Max) @ Ipp	45.5	V
Current - Peak Pulse (10/1000µs)	33	A
Power - Peak Pulse	1500	W
Package / Case	DO-215AB, SMC Gull Wing	—
Mounting Type	Surface Mount	—
Operating Temperature Range	-65 to 150	°C
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution of the MXSMCGLCE28AE3/TR is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Criteria:

Reverse standoff voltage: 28V (nominal)
Breakdown voltage minimum: 31.1V
Clamping voltage maximum @ Ipp: 45.4V to 45.5V range
Peak pulse current: 33A at 10/1000µs pulse width
Peak pulse power dissipation: 1500W (1.5kW)

Mechanical Equivalence Criteria:

Package type: DO-215AB (SMC Gull Wing)
Mounting configuration: Surface Mount
Unidirectional topology: Single channel Zener diode

Compliance Equivalence Criteria:

RoHS3 compliance status
Active product status
Moisture sensitivity level: MSL 1 (Unlimited)

The identified substitute SMCG28A-E3/57T from Vishay General Semiconductor meets all electrical parameters within specified tolerances and maintains identical mechanical packaging and compliance requirements.

Parameter Comparison

Parameter	MXSMCGLCE28AE3/TR (Microchip)	SMCG28A-E3/57T (Vishay)	Match Status
Voltage - Reverse Standoff (Typ)	28V	28V	Equivalent
Voltage - Breakdown (Min)	31.1V	31.1V	Equivalent
Voltage - Clamping (Max) @ Ipp	45.5V	45.4V	Within Tolerance
Current - Peak Pulse (10/1000µs)	33A	33A	Equivalent
Power - Peak Pulse	1500W	1500W	Equivalent
Package / Case	DO-215AB, SMC Gull Wing	DO-215AB, SMC Gull Wing	Equivalent
Mounting Type	Surface Mount	Surface Mount	Equivalent
Type	Zener	Zener	Equivalent
Unidirectional Channels	1	1	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level	MSL 1 (Unlimited)	MSL 1 (Unlimited)	Equivalent
Operating Temperature Range	-65°C to 150°C	-55°C to 150°C	Vishay Range Narrower

Engineering Selection Recommendations

Primary Part Selection: The MXSMCGLCE28AE3/TR remains the preferred selection when available. This part carries military-grade qualification per MIL-PRF-19500 and operates across the extended temperature range of -65°C to 150°C, providing maximum operational flexibility for demanding environments.

Substitute Part Selection: The SMCG28A-E3/57T from Vishay General Semiconductor is a direct functional equivalent for applications where the operating temperature range does not require the lower -65°C minimum. This substitute maintains all critical electrical parameters within specified tolerances and carries identical RoHS3 compliance and MSL 1 moisture sensitivity rating. Both parts are active products with confirmed inventory availability.

Compliance Considerations: Both parts satisfy ROHS3 compliance requirements and carry REACH Unaffected status. Both are classified under ECCN EAR99 and HTSUS 8541.10.0080. Selection between these parts does not introduce compliance risk.

Temperature Range Consideration: The only parameter variance between the main part and substitute is the operating temperature minimum: Microchip specifies -65°C while Vishay specifies -55°C. Applications requiring operation below -55°C must use the MXSMCGLCE28AE3/TR.

Frequently Asked Questions (FAQ)

Q: Can SMCG28A-E3/57T replace MXSMCGLCE28AE3/TR in all applications?

A: The SMCG28A-E3/57T is electrically and mechanically equivalent for applications operating within the temperature range of -55°C to 150°C. Applications requiring operation below -55°C must use the MXSMCGLCE28AE3/TR due to its extended lower temperature specification of -65°C.

Q: Are the clamping voltage specifications identical?

A: The clamping voltages are within tolerance: MXSMCGLCE28AE3/TR specifies 45.5V maximum while SMCG28A-E3/57T specifies 45.4V maximum. Both values fall within acceptable engineering tolerance for this component category and do not affect functional equivalence.

Q: Do both parts use the same package?

A: Yes. Both parts use the DO-215AB package with SMC Gull Wing configuration, enabling direct footprint compatibility on printed circuit boards.

Q: What is the significance of the military qualification on the Microchip part?

A: The MXSMCGLCE28AE3/TR carries MIL-PRF-19500 military-grade qualification, indicating compliance with military procurement standards. The Vishay substitute does not carry this designation. Selection should reflect application requirements for military-specification compliance.

Q: Are moisture sensitivity levels equivalent?

A: Yes. Both parts carry MSL 1 (Unlimited) moisture sensitivity level, indicating no moisture-related handling restrictions during storage or assembly.

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

A: Yes, provided the application temperature range does not require operation below -55°C. Both parts are surface-mount components with identical DO-215AB packaging and can be substituted without PCB redesign.

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