15KP54C Equivalent & Substitute Parts

Part Overview

The 15KP54C is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This bidirectional Zener diode features a 54V reverse standoff voltage and 91.88V maximum clamping voltage at peak pulse current, with a 15kW peak pulse power rating. The device is housed in a P600 axial package for through-hole mounting.

The 15KP54C is classified as obsolete. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for applications requiring this voltage suppression specification.

Substiute Parts

15KP54C

Littelfuse Inc.In Stock: 112715KP54C Datasheet

Current PartRFQ

15KP54CA-TP

Micro Commercial CoIn Stock: 142915KP54CA-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 15KP54C is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Voltage - Reverse Standoff (Typ): 54V
• Voltage - Breakdown (Min): minimum 56.7V
• Voltage - Clamping (Max) @ Ipp: within acceptable range for the application
• Power - Peak Pulse: 15000W (15kW)
• Type: Zener, Bidirectional
• Operating Temperature Range: -55°C ~ 175°C (TJ)

Mechanical Compatibility Criteria:

• Mounting Type: Through Hole
• Package / Case: Axial configuration
• RoHS Status: ROHS3 Compliant

The 15KP54CA-TP meets all critical electrical parameters with identical reverse standoff voltage (54V), equivalent breakdown voltage (60V minimum), and matching peak pulse power rating (15kW). Both devices operate across the same temperature range and maintain ROHS3 compliance. The primary difference is the package designation (R-6 versus P600) and packaging format (Cut Tape versus bulk), which do not affect electrical performance in through-hole applications.

Parameter Comparison

Engineering Selection Recommendations

The 15KP54CA-TP from Micro Commercial Co is the manufacturer-recommended substitute for the obsolete 15KP54C. Both devices maintain identical electrical specifications for reverse standoff voltage (54V) and peak pulse power rating (15kW), ensuring functional equivalence in voltage suppression applications.

The 15KP54CA-TP offers the advantage of active product status, ensuring continued availability and supply chain support. Both parts maintain ROHS3 compliance and unlimited moisture sensitivity rating (MSL 1), meeting regulatory and environmental requirements.

The clamping voltage differential (91.88V for 15KP54C versus 87.5V for 15KP54CA-TP) represents a 4.38V reduction, which may be advantageous in applications requiring lower transient voltage peaks. The slightly higher breakdown voltage minimum (60V versus 56.7V) for the substitute part provides additional margin in the standoff region.

Frequently Asked Questions (FAQ)

Q: Can the 15KP54CA-TP directly replace the 15KP54C in existing designs?

A: Yes. Both devices share identical reverse standoff voltage (54V), equivalent breakdown voltage specifications, and matching peak pulse power rating (15kW). The through-hole axial package configuration is compatible with existing PCB layouts designed for the 15KP54C.

Q: What is the significance of the package designation change from P600 to R-6?

A: P600 and R-6 are equivalent axial package designations used by different manufacturers for the same physical form factor. Both accommodate through-hole mounting with identical lead spacing and dimensions suitable for standard PCB assembly processes.

Q: How does the clamping voltage difference affect circuit performance?

A: The 15KP54CA-TP exhibits a lower maximum clamping voltage (87.5V) compared to the 15KP54C (91.88V). This results in more aggressive transient suppression, clamping voltage spikes to a lower peak value. Applications sensitive to clamping voltage levels should evaluate this 4.38V differential against circuit requirements.

Q: Are there compliance or certification differences between these parts?

A: Both the 15KP54C and 15KP54CA-TP maintain ROHS3 compliance and MSL 1 (unlimited moisture sensitivity). No compliance or certification gaps exist between the two devices.

Q: Why is the 15KP54C classified as obsolete?

A: Obsolescence reflects the manufacturer's discontinuation of the part. The 15KP54CA-TP represents the active equivalent, ensuring continued design support and component availability for new and legacy applications requiring this voltage suppression specification.