5KP54-E3/73 Equivalent & Substitute Parts

Part Overview

The 5KP54-E3/73 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Vishay General Semiconductor - Diodes Division, part of the TransZorb® series. This through-hole P600 axial package device is designed for general-purpose transient voltage suppression applications with a 54V reverse standoff voltage and 5000W peak pulse power rating. The part is currently obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Reverse Standoff Voltage (Typ)	54V
Breakdown Voltage (Min)	60V
Clamping Voltage (Max) @ Ipp	96.3V
Peak Pulse Current (10/1000µs)	51.9A
Peak Pulse Power	5000W (5kW)
Type	Zener
Unidirectional Channels	1
Operating Temperature Range	-55°C ~ 175°C (TJ)
Package / Case	P600, Axial
Mounting Type	Through Hole
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution for the 5KP54-E3/73 is determined by the following critical parameters:

Reverse Standoff Voltage: Must be 54V (±tolerance)
Package / Case: Must be P600, Axial through-hole configuration
Type: Must be Zener unidirectional TVS diode
Operating Temperature Range: Must support -55°C ~ 175°C minimum
RoHS Compliance: Must be ROHS3 compliant

Substitute parts are grouped into two categories:

Category 1 - Direct Electrical Equivalents (5kW Power Rating): Parts with identical 54V standoff voltage, P600 package, and 5000W peak pulse power rating. These include 5KP54A-E3/73, 5KP54E3/TR13, 5KP54A, and 5KP54A-HR. These parts maintain the same electrical performance envelope as the original part.

Category 2 - Higher Power Alternatives (15kW and 30kW Power Ratings): Parts with identical 54V standoff voltage and P600 package but elevated peak pulse power ratings (15000W or 30000W). These include 15KPA54A-HR, 15KPA54A-HRA, 30KPA54A, 30KPA54A-HR, and 30KPA54A-HRA. These parts provide enhanced transient suppression capability for applications requiring higher energy dissipation.

Category 3 - Lower Voltage Alternative: The 1N5612 operates at 49V standoff voltage with reduced peak pulse power (1500W) and different package designation (G, Axial). This part is suitable only for applications with lower voltage requirements.

Parameter Comparison

Part Number	Manufacturer	Standoff Voltage (V)	Breakdown Voltage Min (V)	Clamping Voltage Max @ Ipp (V)	Peak Pulse Current (A)	Peak Pulse Power (W)	Package	Product Status	RoHS Status
5KP54-E3/73	Vishay	54	60	96.3	51.9	5000	P600, Axial	Obsolete	ROHS3
5KP54A-E3/73	Vishay	54	60	87.1	57.4	5000	P600, Axial	Active	ROHS3
5KP54E3/TR13	Microchip Technology	54	60	96.3	51.9	5000	P600, Axial	Active	ROHS3
5KP54A	Littelfuse Inc.	54	60	87.1	58.6	5000	P600, Axial	Active	ROHS3
5KP54A-HR	Littelfuse Inc.	54	60	87.1	58.6	5000	P600, Axial	Active	ROHS3
15KPA54A-HR	Littelfuse Inc.	54	60.3	87.7	172.2	15000	P600, Axial	Active	ROHS3
15KPA54A-HRA	Littelfuse Inc.	54	60.3	87.7	172.2	15000	P600, Axial	Active	ROHS3
30KPA54A	MDE Semiconductor Inc	54	60.3	91.4	331.5	30000	P600, Axial	Active	ROHS3
30KPA54A-HR	Littelfuse Inc.	54	60.3	91.4	331.5	30000	P600, Axial	Active	ROHS3
30KPA54A-HRA	Littelfuse Inc.	54	60.3	91.4	331.5	30000	P600, Axial	Active	ROHS3
1N5612	Microchip Technology	49	54	78.5	116	1500	G, Axial	Active	Not specified

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents)

For applications requiring identical electrical performance to the 5KP54-E3/73, select from active parts with 54V standoff voltage and 5000W peak pulse power rating:

5KP54E3/TR13 (Microchip Technology): Matches original clamping voltage (96.3V) and peak pulse current (51.9A). Available in tape & reel packaging. Active product status with ROHS3 compliance.
5KP54A-E3/73 (Vishay): Maintains Vishay manufacturer continuity with slightly lower clamping voltage (87.1V) and higher peak pulse current (57.4A). Active product status with ROHS3 compliance.
5KP54A (Littelfuse Inc.): Available in cut tape packaging with 87.1V clamping voltage and 58.6A peak pulse current. Active product status with ROHS3 compliance.
5KP54A-HR (Littelfuse Inc.): Tape & reel variant with identical electrical specifications to 5KP54A. Active product status with ROHS3 compliance.

Higher Power Alternatives

For applications where enhanced transient suppression capability is beneficial:

15KPA54A-HR / 15KPA54A-HRA (Littelfuse Inc.): 15000W peak pulse power with 172.2A peak pulse current. Maintains 54V standoff voltage. Active product status with ROHS3 compliance.
30KPA54A / 30KPA54A-HR / 30KPA54A-HRA: 30000W peak pulse power with 331.5A peak pulse current. Maintains 54V standoff voltage. Active product status with ROHS3 compliance.

Not Recommended

The 1N5612 operates at 49V standoff voltage with significantly reduced power rating (1500W). This part is suitable only for applications with lower voltage requirements and is not a direct substitute for 54V applications.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP54A-E3/73 as a direct replacement for 5KP54-E3/73?

A: Yes. Both parts maintain 54V standoff voltage, P600 axial package, and 5000W peak pulse power rating. The 5KP54A-E3/73 has slightly lower clamping voltage (87.1V vs 96.3V) and higher peak pulse current (57.4A vs 51.9A), which represents improved performance characteristics within the same power class.

Q: What is the difference between 5KP54A and 5KP54A-HR?

A: Both parts are manufactured by Littelfuse Inc. with identical electrical specifications (54V standoff, 87.1V clamping, 58.6A peak pulse current, 5000W power). The primary difference is packaging: 5KP54A is supplied in cut tape (CT), while 5KP54A-HR is supplied in tape & reel (TR) format. Selection depends on assembly process requirements.

Q: Can I use a 30KPA54A instead of the original 5KP54-E3/73?

A: Yes, from an electrical compatibility standpoint. Both maintain 54V standoff voltage and P600 axial package. The 30KPA54A provides significantly higher peak pulse power (30000W vs 5000W) and peak pulse current (331.5A vs 51.9A). This substitution is suitable for applications requiring enhanced transient suppression capability. Verify that the application circuit can accommodate the higher current handling without adverse effects.

Q: Why is the 1N5612 listed as a substitute if it has different voltage?

A: The 1N5612 is listed based on the original part's substitute field but operates at 49V standoff voltage, making it unsuitable for 54V applications. This part should be used only in applications specifically designed for 49V protection levels.

Q: Are all substitute parts ROHS3 compliant?

A: All substitute parts listed except 1N5612 are explicitly ROHS3 compliant. The 1N5612 RoHS status is not specified in the provided data. Verify compliance requirements for your specific application before selection.

Q: What is the difference between Littelfuse 15KPA54A-HR and 15KPA54A-HRA?

A: Both parts are manufactured by Littelfuse Inc. with identical electrical specifications (54V standoff, 87.7V clamping, 172.2A peak pulse current, 15000W power) and P600 axial package in tape & reel format. The series designation differs (15KPA-HR vs 15KPA-HRA), but electrical performance is equivalent. Selection may depend on specific procurement or inventory requirements.

Q: Can I mix different manufacturers' parts in the same circuit?

A: Yes. All substitute parts maintain the same 54V standoff voltage, P600 package, and through-hole mounting type. Electrical performance variations (clamping voltage, peak pulse current) are within acceptable ranges for general-purpose transient suppression. Verify that your circuit design accommodates the specific electrical characteristics of the selected part.

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