Equivalent & Substitute Parts for 3KP54C-B TVS Diode

Part Overview

The 3KP54C-B 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, 91.46V maximum clamping voltage, and 3kW peak pulse power rating in a through-hole P600 axial package. The part is currently obsolete, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility for new designs or production continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	54	V
Voltage - Breakdown (Min)	56.84	V
Voltage - Clamping (Max) @ Ipp	91.46	V
Current - Peak Pulse (10/1000µs)	34.4	A
Power - Peak Pulse	3000	W
Operating Temperature Range	-55 to 175	°C (TJ)
Mounting Type	Through Hole	—
Package / Case	P600, Axial	—
Type	Zener	—
Bidirectional Channels	1	—
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 3KP54C-B is determined by strict equivalence across the following electrical and mechanical parameters:

Voltage - Reverse Standoff: 54V (all substitutes maintain this specification)
Voltage - Clamping (Max) @ Ipp: Range 87.1V to 91.46V (acceptable variation within TVS diode design tolerances)
Mounting Type: Through Hole (all substitutes are through-hole mounted)
Package / Case: P600 or R-6 axial packages (both are standard axial through-hole formats)
Type: Zener bidirectional (all substitutes are Zener-type TVS diodes with single bidirectional channel)
Operating Temperature: -55°C to 175°C (all substitutes maintain this range)
RoHS Compliance: ROHS3 Compliant (all substitutes meet this requirement)

Substitute parts are grouped by power rating capability: 5kW, 15kW, and 30kW options are available. Selection depends on application requirements for peak pulse power handling.

Parameter Comparison

Parameter	3KP54C-B (Main)	5KP54CA-B	15KP54CA-TP	15KPA54CAE3/TR13	30KP54CA-TP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Micro Commercial Co	Microchip Technology	Micro Commercial Co
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	54V	54V	54V	54V	54V
Voltage - Breakdown (Min)	56.84V	60V	60V	60.3V	60.3V
Voltage - Clamping (Max) @ Ipp	91.46V	87.1V	87.5V	87.7V	91.4V
Current - Peak Pulse (10/1000µs)	34.4A	58.6A	—	172.2A	—
Power - Peak Pulse	3000W	5000W	15000W	15000W	30000W
Operating Temperature	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C	-55 to 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	P600, Axial	P600, Axial	R-6, Axial	P600, Axial	R-6, Axial
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Selection of substitute parts for the 3KP54C-B should be based on application power requirements and package availability:

5KP54CA-B (Littelfuse Inc.): Active product status with 5kW peak pulse power rating. Maintains P600 axial package compatibility. Suitable for applications requiring moderate overvoltage protection with higher current handling (58.6A) than the original part.

15KP54CA-TP (Micro Commercial Co): Active product with 15kW peak pulse power rating. Uses R-6 axial package. Appropriate for higher-energy transient suppression applications. Peak pulse current specification not provided.

15KPA54CAE3/TR13 (Microchip Technology): Active product with 15kW peak pulse power rating. Maintains P600 axial package compatibility. Offers highest specified peak pulse current (172.2A) among 15kW options. Supplied in tape and reel packaging.

30KP54CA-TP (Micro Commercial Co): Active product with 30kW peak pulse power rating. Uses R-6 axial package. Suitable for high-energy transient protection applications. Peak pulse current specification not provided.

All substitute parts maintain ROHS3 compliance, -55°C to 175°C operating temperature range, and 54V reverse standoff voltage specification. Package selection (P600 versus R-6) depends on PCB layout and mechanical mounting constraints.

Frequently Asked Questions (FAQ)

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

A: Yes, for applications where 5kW peak pulse power is sufficient. The 5KP54CA-B maintains identical 54V reverse standoff voltage, similar clamping voltage (87.1V versus 91.46V), and P600 axial package compatibility. Verify that the application does not require the specific 3kW power rating of the original part.

Q: What is the difference between P600 and R-6 axial packages?

A: Both P600 and R-6 are through-hole axial package formats for TVS diodes. Package selection depends on PCB layout, lead spacing, and mechanical mounting requirements. Consult component datasheets for precise dimensional specifications.

Q: Are all substitute parts RoHS compliant?

A: Yes, all listed substitute parts are ROHS3 compliant, matching the compliance status of the 3KP54C-B.

Q: Which substitute should be selected for maximum transient energy absorption?

A: The 30KP54CA-TP offers the highest peak pulse power rating at 30kW. For applications requiring 15kW capability, both 15KP54CA-TP and 15KPA54CAE3/TR13 are suitable; the latter provides higher specified peak pulse current (172.2A).

Q: Do all substitutes operate across the same temperature range?

A: Yes, all substitute parts operate from -55°C to 175°C junction temperature, matching the original 3KP54C-B specification.

Q: What is the significance of the 54V reverse standoff voltage?

A: The 54V reverse standoff voltage defines the maximum continuous voltage the TVS diode can withstand without conducting. All substitute parts maintain this specification, ensuring circuit protection at the same threshold voltage as the original part.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message