MLCE14AE3 Equivalent & Substitute Parts

Part Overview

The MLCE14AE3 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Microchip Technology, designed for general-purpose overvoltage protection applications. This through-hole component operates with a 14V reverse standoff voltage and provides 23.2V clamping at peak pulse current, with a peak pulse power rating of 1500W. The part is currently active in production and maintains MIL-PRF-19500 military qualification. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity while maintaining electrical and mechanical compatibility.

Substiute Parts

MLCE14AE3

Microchip TechnologyIn Stock: 787MLCE14AE3 Datasheet

Current PartRFQ

LCE14A

Littelfuse Inc.In Stock: 1645LCE14A Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the MLCE14AE3 is determined by strict electrical and mechanical parameter matching within the transient voltage suppressor category. The following parameters establish substitution eligibility:

Critical Electrical Parameters:

• Voltage - Reverse Standoff (Typ): 14V
• Voltage - Breakdown (Min): 15.6V
• Voltage - Clamping (Max) @ Ipp: 23.2V
• Current - Peak Pulse (10/1000µs): 65A
• Power - Peak Pulse: 1500W

Critical Mechanical Parameters:

• Mounting Type: Through Hole
• Package / Case: DO-201AA, DO-27, Axial
• Unidirectional Channels: 1
• Type: Zener

Substitute parts must match all critical electrical parameters and support the same through-hole axial package configuration. Operating temperature range and compliance certifications may vary within acceptable industrial and military standards without affecting functional substitution.

Parameter Comparison

Engineering Selection Recommendations

MLCE14AE3 (Microchip Technology): The primary part maintains MIL-PRF-19500 military qualification and is suitable for applications requiring military-grade transient voltage suppression. This component is RoHS non-compliant and carries military-grade certification. Current inventory: 720 pcs.

LCE14A (Littelfuse Inc.): This substitute part provides identical electrical performance and mechanical compatibility with the MLCE14AE3. The LCE14A achieves ROHS3 compliance, making it suitable for applications with RoHS requirements. The extended upper operating temperature limit of 175°C provides additional thermal margin compared to the primary part. Current inventory: 1623 pcs. Both parts are active in production and maintain equivalent functional specifications for general-purpose transient voltage suppression applications.

Selection between these parts should be based on specific application requirements regarding RoHS compliance, military qualification necessity, and operating temperature constraints.

Frequently Asked Questions (FAQ)

Q: Can the LCE14A directly replace the MLCE14AE3 in existing designs?

A: Yes. Both parts share identical electrical parameters (14V standoff, 23.2V clamping, 65A peak pulse current, 1500W peak power) and support the same through-hole DO-201AA/DO-27 axial package configuration. Mechanical and electrical substitution is direct.

Q: What is the primary difference between these two parts?

A: The MLCE14AE3 carries MIL-PRF-19500 military qualification and is RoHS non-compliant. The LCE14A is ROHS3 compliant and operates across a wider temperature range (-55°C to 175°C versus -65°C to 150°C). Both deliver identical suppression performance.

Q: Does the operating temperature range difference affect substitution?

A: The LCE14A's extended upper temperature limit (175°C) provides additional thermal margin. The MLCE14AE3's lower limit (-65°C) extends further into cryogenic ranges. Selection depends on the specific application's temperature requirements. Both parts are suitable for standard industrial and commercial temperature ranges.

Q: Are there packaging differences between these parts?

A: Both parts use through-hole axial mounting in DO-201AA/DO-27 packages. The MLCE14AE3 is supplied in bulk packaging, while the LCE14A is supplied in cut tape (CT) packaging. This affects handling and assembly processes but does not impact electrical or mechanical compatibility.

Q: Which part should be selected for RoHS-compliant applications?

A: The LCE14A is ROHS3 compliant and must be used for applications with RoHS requirements. The MLCE14AE3 is RoHS non-compliant and is not suitable for such applications.

Q: Are both parts currently available?

A: Yes. The MLCE14AE3 has 720 pcs in stock, and the LCE14A has 1623 pcs in stock. Both parts maintain active production status.