LCE26 Equivalent & Substitute Parts

Part Overview

The LCE26 is a unidirectional Zener Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. With a 26V reverse standoff voltage and 44.21V maximum clamping voltage at peak pulse current, the LCE26 provides 1500W peak pulse power dissipation in a through-hole DO-201 package. The part is currently classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement.

Substiute Parts

LCE26

Littelfuse Inc.In Stock: 909LCE26 Datasheet

Current PartRFQ

LCE26A

LittelfuseIn Stock: 943LCE26A Datasheet

DirectRFQ

5KP26E3/TR13

Microchip TechnologyIn Stock: 7385KP26E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the LCE26 is determined by the following critical electrical and mechanical parameters:

• Voltage - Reverse Standoff: Must be 26V to maintain circuit protection threshold
• Voltage - Clamping (Max) @ Ipp: Must not exceed 44.21V to ensure adequate transient suppression
• Current - Peak Pulse (10/1000µs): Must be ≥36A to handle specified surge conditions
• Power - Peak Pulse: Must be ≥1500W to dissipate transient energy
• Operating Temperature Range: Must support -55°C ~ 175°C (TJ)
• Mounting Type: Must be through-hole compatible
• Package / Case: Must be axial configuration (DO-201, P600, or equivalent)
• RoHS Status: Must maintain ROHS3 compliance

Two substitute parts meet these criteria with varying performance characteristics:

LCE26A (Littelfuse Inc.) - Direct manufacturer equivalent with identical electrical specifications and active product status.

5KP26E3/TR13 (Microchip Technology) - Higher-performance alternative with increased current handling (107A) and power dissipation (5000W), suitable for applications requiring enhanced surge protection margin.

Parameter Comparison

Engineering Selection Recommendations

LCE26A is the primary substitute for direct replacement of obsolete LCE26 units. Both parts share identical electrical specifications (26V standoff, 36A peak pulse current, 1500W power dissipation) and operating temperature range. LCE26A maintains active product status with ROHS3 compliance and is available in tape and reel packaging for production environments.

5KP26E3/TR13 serves as an enhanced alternative when application requirements permit higher performance margins. This Microchip Technology part maintains the 26V standoff voltage while providing 107A peak pulse current and 5000W power dissipation—approximately three times the surge handling capacity of the LCE26. The P600 package accommodates higher current levels. Selection of 5KP26E3/TR13 is appropriate for designs requiring increased transient protection headroom or operating in high-stress electrical environments. Both substitute parts maintain ROHS3 compliance and -55°C ~ 175°C operating temperature specifications.

Frequently Asked Questions (FAQ)

Q: Can LCE26A be used as a direct drop-in replacement for LCE26?

A: Yes. LCE26A shares identical electrical specifications with LCE26, including 26V reverse standoff voltage, 36A peak pulse current, and 1500W power dissipation. Both use through-hole axial mounting in DO-201 package configuration. The primary difference is product status: LCE26A is active while LCE26 is obsolete.

Q: What is the difference between LCE26A and 5KP26E3/TR13?

A: Both maintain 26V reverse standoff voltage and -55°C ~ 175°C operating temperature. LCE26A provides 36A peak pulse current and 1500W power dissipation in DO-201 package. 5KP26E3/TR13 provides 107A peak pulse current and 5000W power dissipation in P600 package. Selection depends on application surge current requirements and available board space.

Q: Are all substitute parts RoHS compliant?

A: Yes. LCE26A and 5KP26E3/TR13 are both ROHS3 compliant, matching the compliance status of the original LCE26.

Q: Does package size affect circuit compatibility?

A: LCE26A uses DO-201 package identical to LCE26, ensuring direct board-level compatibility. 5KP26E3/TR13 uses P600 package, which is also axial through-hole but with different physical dimensions. Board layout verification is required when substituting with 5KP26E3/TR13.

Q: Which substitute part should be selected for new designs?

A: LCE26A is recommended for designs requiring direct electrical and mechanical equivalence to LCE26. 5KP26E3/TR13 is appropriate when application requirements support higher current and power ratings, or when enhanced transient protection margin is specified.