LCE7.5A-E3/73 Equivalent & Substitute Parts

Part Overview

The LCE7.5A-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose transient protection applications. This component features a 7.5V reverse standoff voltage with a 12.9V maximum clamping voltage and 100A peak pulse current capability in a through-hole DO-201AA/DO-27 axial package. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements.

Substiute Parts

LCE7.5A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 952LCE7.5A-E3/73 Datasheet

Current PartRFQ

LCE7.5A

LittelfuseIn Stock: 1007LCE7.5A Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LCE7.5A-E3/73 is determined by strict equivalence across the following critical parameters:

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

The LCE7.5A from Littelfuse meets all electrical and mechanical specifications required for direct substitution. Both parts share identical voltage ratings, peak pulse current handling, power dissipation capability, and physical packaging. The primary distinction is product status: the original part is obsolete, while the substitute is active in production.

Parameter Comparison

Engineering Selection Recommendations

The LCE7.5A from Littelfuse is the direct equivalent for the obsolete LCE7.5A-E3/73. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution. The substitute maintains identical electrical performance across all critical transient suppression parameters and is housed in the same through-hole axial package.

The operating temperature range of the Littelfuse part (-55°C ~ 175°C) is slightly narrower than the original Vishay component (-65°C ~ 175°C) at the lower end. This difference is relevant only for applications requiring operation below -55°C. For standard industrial and commercial applications within the -55°C to 175°C range, the substitute provides full functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can the LCE7.5A (Littelfuse) be used as a direct replacement for the LCE7.5A-E3/73 (Vishay)?

A: Yes. Both parts share identical voltage ratings (7.5V reverse standoff, 12.9V clamping), peak pulse current (100A), power dissipation (1500W), and physical packaging (DO-201AA/DO-27 axial through-hole). They are functionally equivalent for general-purpose transient voltage suppression applications.

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

A: The Vishay part operates from -65°C to 175°C, while the Littelfuse substitute operates from -55°C to 175°C. The Littelfuse part has a 10°C higher minimum operating temperature. Selection depends on whether your application requires operation below -55°C.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the LCE7.5A-E3/73 and LCE7.5A are ROHS3 compliant and REACH unaffected, meeting current environmental and safety regulations for electronic components.

Q: Does the packaging differ between these parts?

A: No. Both components use identical DO-201AA/DO-27 axial through-hole packaging, ensuring mechanical compatibility in existing PCB layouts and assembly processes.

Q: Why is the original part listed as obsolete?

A: The LCE7.5A-E3/73 is classified as obsolete by Vishay. The LCE7.5A from Littelfuse remains in active production and provides equivalent performance for new designs and production continuity.