LCE13 Equivalent & Substitute Parts

Part Overview

The LCE13 is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. It features a 13V reverse standoff voltage with a maximum clamping voltage of 22.58V at peak pulse current, housed in a DO-201 through-hole axial package. The LCE13 is classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement.

Substiute Parts

LCE13

Littelfuse Inc.In Stock: 1190LCE13 Datasheet

Current PartRFQ

LCE13A

Littelfuse Inc.In Stock: 944LCE13A Datasheet

DirectRFQ

5KP13E3/TR13

Microchip TechnologyIn Stock: 9625KP13E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LCE13 are qualified based on the following critical parameters:

• Voltage - Reverse Standoff: 13V (exact match required)
• Voltage - Clamping (Max) @ Ipp: within acceptable range for circuit protection (21.5V to 23.8V)
• Current - Peak Pulse (10/1000µs): equal to or greater than 70A
• Operating Temperature Range: -55°C to 175°C minimum
• Mounting Type: Through Hole
• Package compatibility: DO-201 or P600 axial packages
• RoHS3 Compliance: required for regulatory alignment

The LCE13A and 5KP13E3/TR13 meet these criteria and are classified as direct or manufacturer-recommended substitutes.

Parameter Comparison

Engineering Selection Recommendations

LCE13A is the direct substitute from Littelfuse Inc. with active product status. It maintains identical reverse standoff voltage (13V), peak pulse current (70A), and power dissipation (1500W) specifications. The clamping voltage is 21.5V, which is lower than the original 22.58V but remains within acceptable protection parameters. This part is available in Tape & Reel packaging and carries ROHS3 compliance.

5KP13E3/TR13 is the manufacturer-recommended alternative from Microchip Technology. It provides enhanced performance with 210A peak pulse current and 5000W power dissipation, offering greater margin for transient protection. The clamping voltage is 23.8V. This part is also ROHS3 compliant and available in Tape & Reel packaging. The P600 package differs from the original DO-201, requiring mechanical verification for board layout compatibility.

Both substitutes maintain the 13V reverse standoff voltage and -55°C to 175°C operating temperature range required for functional equivalence.

Frequently Asked Questions (FAQ)

Q: Can LCE13A be used as a direct replacement for LCE13?

A: Yes. LCE13A is a direct substitute with identical reverse standoff voltage (13V), peak pulse current (70A), and power dissipation (1500W). The clamping voltage difference (21.5V vs. 22.58V) is within acceptable tolerance for general-purpose overvoltage protection. Both parts use DO-201 through-hole axial packages.

Q: What are the key differences between LCE13A and 5KP13E3/TR13?

A: Both maintain the 13V reverse standoff voltage. LCE13A matches the original peak pulse current (70A) and power dissipation (1500W). The 5KP13E3/TR13 provides enhanced performance with 210A peak pulse current and 5000W power dissipation. The 5KP13E3/TR13 uses a P600 package instead of DO-201, requiring mechanical verification for board compatibility.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. LCE13A and 5KP13E3/TR13 are both ROHS3 compliant, matching the regulatory status of the original LCE13.

Q: What is the significance of the clamping voltage differences?

A: The clamping voltage determines the maximum voltage the TVS diode allows across the protected circuit during a transient event. LCE13 clamps at 22.58V, LCE13A at 21.5V, and 5KP13E3/TR13 at 23.8V. All three values are within acceptable range for 13V protection circuits. Lower clamping voltage (LCE13A) provides tighter protection; higher clamping voltage (5KP13E3/TR13) provides greater margin.

Q: Can 5KP13E3/TR13 be used in place of LCE13 without circuit modification?

A: Electrical substitution is valid due to matching reverse standoff voltage and operating temperature range. However, the P600 package differs from DO-201, requiring verification that the physical footprint and lead spacing are compatible with the existing board layout.

Q: Why is LCE13 classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Littelfuse Inc. LCE13A and 5KP13E3/TR13 are active products with ongoing availability and support.