MLCE7.5AE3 Equivalent & Substitute Parts

Part Overview

The MLCE7.5AE3 is a unidirectional Zener-type Transient Voltage Suppressor (TVS) diode manufactured by Microchip Technology. This component is designed for general-purpose transient voltage protection applications, featuring a 7.5V reverse standoff voltage and 12.9V maximum clamping voltage at peak pulse current. The device is rated for 100A peak pulse current with 1500W peak pulse power dissipation and is housed in a DO-201AA/DO-27 axial through-hole package.

The MLCE7.5AE3 maintains Active product status and carries Military-grade qualification under MIL-PRF-19500. Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component sourcing strategies while maintaining electrical and mechanical compatibility.

Substiute Parts

MLCE7.5AE3

Microchip TechnologyIn Stock: 898MLCE7.5AE3 Datasheet

Current PartRFQ

LCE7.5A

LittelfuseIn Stock: 1007LCE7.5A Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the MLCE7.5AE3 is determined by strict equivalence across the following critical electrical parameters:

• Voltage - Reverse Standoff (Typ): 7.5V
• Voltage - Clamping (Max) @ Ipp: 12.9V
• Current - Peak Pulse (10/1000µs): 100A
• Power - Peak Pulse: 1500W
• Package / Case: DO-201AA, DO-27, Axial
• Mounting Type: Through Hole
• Unidirectional Channels: 1
• Type: Zener

The LCE7.5A manufactured by Littelfuse meets all critical electrical specifications and mechanical package requirements. Both devices are classified as unidirectional Zener-type TVS diodes with identical voltage ratings, peak pulse current capacity, and power dissipation ratings. Both are housed in through-hole axial packages compatible with DO-201AA and DO-27 footprints.

Parameter Comparison

Engineering Selection Recommendations

MLCE7.5AE3 (Microchip Technology)

The MLCE7.5AE3 is the primary component specification. It carries Military-grade qualification under MIL-PRF-19500 and is suitable for applications requiring military-level reliability and traceability. This device is RoHS non-compliant, which may be a requirement for certain legacy or military applications. Current inventory status shows 795 pieces in stock.

LCE7.5A (Littelfuse) - Electrical Equivalent

The LCE7.5A is electrically equivalent to the MLCE7.5AE3 across all critical transient voltage suppression parameters. The Littelfuse device achieves ROHS3 compliance, making it suitable for applications subject to RoHS regulations. The operating temperature range extends to 175°C maximum junction temperature, compared to 150°C for the Microchip device, providing additional thermal margin in high-temperature environments. Current inventory status shows 937 pieces in stock. Packaging is supplied in Cut Tape (CT) format rather than Bulk.

Both devices are Active products with identical electrical performance in transient suppression applications. Selection between these parts should be based on compliance requirements (RoHS status), supply chain availability, packaging format preference, and operating temperature requirements.

Frequently Asked Questions (FAQ)

Q: Can the LCE7.5A directly replace the MLCE7.5AE3 in existing designs?

A: Yes. Both devices are unidirectional Zener-type TVS diodes with identical voltage ratings (7.5V reverse standoff, 12.9V clamping), peak pulse current (100A), and power dissipation (1500W). Both use through-hole axial packages compatible with DO-201AA and DO-27 footprints. No circuit modifications are required for electrical substitution.

Q: What is the difference in operating temperature range between these parts?

A: The MLCE7.5AE3 operates from -65°C to 150°C junction temperature. The LCE7.5A operates from -55°C to 175°C junction temperature. The Littelfuse device provides a 25°C higher maximum temperature rating. For applications operating near or above 150°C, the LCE7.5A offers extended thermal capability.

Q: Why does the LCE7.5A show "Not specified" for capacitance at 1MHz?

A: The capacitance parameter is not provided in the Littelfuse device documentation. The MLCE7.5AE3 specifies 100pF at 1MHz. For applications where capacitance is a critical parameter, the MLCE7.5AE3 datasheet should be consulted. Littelfuse technical documentation should be reviewed to confirm capacitance specifications if this parameter is required for circuit design.

Q: What is the difference in packaging format between these parts?

A: The MLCE7.5AE3 is supplied in Bulk packaging. The LCE7.5A is supplied in Cut Tape (CT) format. Both are through-hole axial components with identical mechanical dimensions. Packaging format affects handling, storage, and automated assembly processes but does not affect electrical performance or mechanical compatibility.

Q: Is the MLCE7.5AE3 suitable for RoHS-compliant applications?

A: No. The MLCE7.5AE3 is RoHS non-compliant. For applications requiring RoHS compliance, the LCE7.5A (ROHS3 Compliant) is the appropriate substitute.

Q: Are both devices qualified for military applications?

A: The MLCE7.5AE3 carries Military-grade qualification under MIL-PRF-19500. The LCE7.5A product status does not indicate military qualification in the provided specifications. For applications requiring military-grade components, the MLCE7.5AE3 is the specified device.

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

A: Yes, from a mechanical and electrical standpoint. Both devices use identical through-hole axial package dimensions (DO-201AA, DO-27). PCB footprints designed for one device accommodate the other without modification. Compliance and qualification requirements should be verified against application specifications before final selection.