LCE26A-E3/73 Equivalent & Substitute Parts

Part Overview

The LCE26A-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This component is designed for general-purpose transient voltage suppression applications with a 26V reverse standoff voltage and 42.1V maximum clamping voltage. The part is currently listed as obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

LCE26A-E3/73

Vishay General Semiconductor - Diodes DivisionIn Stock: 771LCE26A-E3/73 Datasheet

Current PartRFQ

LCE26A

LittelfuseIn Stock: 943LCE26A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the LCE26A-E3/73 is determined by strict equivalence across the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: 26V (nominal operating voltage threshold)
• Voltage - Breakdown (Min): 28.9V (minimum trigger point)
• Voltage - Clamping (Max) @ Ipp: 42.1V (maximum transient suppression level)
• Current - Peak Pulse (10/1000µs): 36A (surge handling capacity)
• Power - Peak Pulse: 1500W (energy dissipation capability)
• Mounting Type: Through Hole (physical installation requirement)
• Package / Case: DO-201AA, DO-27, Axial (form factor compatibility)
• Unidirectional Channels: 1 (circuit topology requirement)

The LCE26A from Littelfuse meets all these criteria and is classified as the manufacturer-recommended substitute.

Parameter Comparison

Engineering Selection Recommendations

The LCE26A from Littelfuse is the direct equivalent substitute for the obsolete LCE26A-E3/73. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. The Littelfuse part carries active product status, ensuring ongoing availability and supply chain continuity.

The primary difference is the operating temperature range: the Littelfuse LCE26A operates from -55°C to 175°C, compared to the Vishay part's -65°C to 175°C. This represents a 10°C reduction in the lower temperature limit. Component selection should verify that the application's minimum operating temperature does not fall below -55°C.

Both parts are supplied in DO-201AA, DO-27, and axial package configurations with identical electrical performance specifications. The Littelfuse part is available in Tape & Reel packaging, supporting automated assembly processes.

Frequently Asked Questions (FAQ)

Q: Can the LCE26A (Littelfuse) be used as a direct replacement for the LCE26A-E3/73 (Vishay)?

A: Yes, the LCE26A from Littelfuse is electrically and mechanically equivalent across all critical parameters: 26V reverse standoff voltage, 28.9V minimum breakdown voltage, 42.1V maximum clamping voltage, 36A peak pulse current, and 1500W peak pulse power. Both components use identical DO-201AA, DO-27, and axial package configurations.

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

A: The Vishay LCE26A-E3/73 operates from -65°C to 175°C, while the Littelfuse LCE26A operates from -55°C to 175°C. The Littelfuse part has a 10°C higher minimum operating temperature. Applications requiring operation below -55°C must retain the original Vishay component or identify an alternative with extended low-temperature capability.

Q: Are there any compliance or regulatory differences?

A: Both parts are ROHS3 compliant, REACH unaffected, and carry identical ECCN (EAR99) and HTSUS (8541.10.0080) classifications. No regulatory barriers exist to substitution.

Q: What packaging options are available for the substitute part?

A: The Littelfuse LCE26A is available in Tape & Reel (TR) packaging, supporting high-volume automated assembly. The original Vishay part packaging specification was not provided. Both parts are supplied in DO-201AA, DO-27, and axial form factors.

Q: Is the LCE26A from Littelfuse currently in production?

A: Yes, the LCE26A is listed as active product status with Littelfuse, ensuring ongoing availability and supply chain support. The original Vishay LCE26A-E3/73 is obsolete.