3KP54C Equivalent & Substitute Parts

Part Overview

The 3KP54C is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 54V reverse standoff voltage rating, 91.46V maximum clamping voltage, and 3000W peak pulse power handling capability in a through-hole P600 axial package.

The 3KP54C is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

3KP54C

Littelfuse Inc.In Stock: 7813KP54C Datasheet

Current PartRFQ

5KP54CA

Littelfuse Inc.In Stock: 16845KP54CA Datasheet

DirectRFQ

15KP54CA-TP

Micro Commercial CoIn Stock: 142915KP54CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 3KP54C are qualified based on the following critical parameters:

• Voltage - Reverse Standoff (Typ): 54V
• Bidirectional Channels: 1
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• RoHS Status: ROHS3 Compliant
• Type: Zener
• Applications: General Purpose

Substitute parts must maintain identical reverse standoff voltage, bidirectional operation, temperature range, and compliance certifications. Package variations (P600 vs. R-6) are permitted provided the through-hole axial mounting configuration is preserved and electrical performance remains within acceptable operating parameters.

Parameter Comparison

Engineering Selection Recommendations

The 5KP54CA (Littelfuse Inc.) is an active-status substitute with identical package configuration (P600, Axial) and electrical specifications compatible with the 3KP54C. Both components are ROHS3 compliant and maintain the same operating temperature range. The 5KP54CA provides higher peak pulse current (58.6A vs. 34.4A) and power dissipation (5000W vs. 3000W), making it suitable for applications requiring equivalent or enhanced protection performance.

The 15KP54CA-TP (Micro Commercial Co) is an active-status substitute with identical voltage and temperature specifications. This component features a different package variant (R-6 vs. P600) and significantly higher power dissipation (15000W vs. 3000W). The 15KP54CA-TP is ROHS3 and REACH compliant, providing enhanced protection capability for applications with higher transient energy requirements.

Both substitutes maintain ROHS3 compliance and are actively manufactured, ensuring long-term supply chain availability compared to the obsolete 3KP54C.

Frequently Asked Questions (FAQ)

Q: Can the 5KP54CA directly replace the 3KP54C in existing designs?

A: Yes. The 5KP54CA maintains identical reverse standoff voltage (54V), clamping voltage performance, operating temperature range (-55 to 175°C), and package configuration (P600, Axial). Both are ROHS3 compliant. The 5KP54CA provides higher current and power handling, making it functionally compatible for the same application space.

Q: What is the primary difference between the 5KP54CA and 15KP54CA-TP?

A: Both maintain the same 54V reverse standoff voltage and operating temperature range. The key differences are package variant (5KP54CA uses P600; 15KP54CA-TP uses R-6) and power dissipation rating (5KP54CA: 5000W; 15KP54CA-TP: 15000W). The 15KP54CA-TP is suitable for applications requiring higher transient energy absorption.

Q: Are package differences between P600 and R-6 significant for substitution?

A: Both P600 and R-6 are through-hole axial packages. Physical dimensions and PCB footprint may differ. Verify mechanical compatibility with existing board layouts before substitution. Electrical performance and mounting type remain consistent across both package variants.

Q: Do all substitute parts meet the same compliance standards as the 3KP54C?

A: Yes. The 5KP54CA and 15KP54CA-TP are both ROHS3 compliant. The 15KP54CA-TP additionally carries REACH compliance certification. All three components meet the same environmental and regulatory requirements.

Q: Why is the 3KP54C classified as obsolete?

A: The 3KP54C is no longer in active production. The 5KP54CA and 15KP54CA-TP are actively manufactured alternatives that provide equivalent or enhanced electrical performance while maintaining design compatibility.