Equivalent & Substitute Parts for 5KP36A-E3/51 Transient Voltage Suppressor

Part Overview

The 5KP36A-E3/51 is a unidirectional Transient Voltage Suppressor (TVS) diode from Vishay General Semiconductor - Diodes Division, designed for general-purpose overvoltage protection applications. This part operates with a 36V reverse standoff voltage and delivers 5000W peak pulse power through a P600 axial package. The 5KP36A-E3/51 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity.

Key Parameters

Parameter	Value	Unit
Voltage - Reverse Standoff (Typ)	36	V
Voltage - Breakdown (Min)	40	V
Voltage - Clamping (Max) @ Ipp	58.1	V
Current - Peak Pulse (10/1000µs)	86.1	A
Power - Peak Pulse	5000	W
Operating Temperature Range	-55 to 175	°C
Mounting Type	Through Hole	—
Package / Case	P600, Axial	—
Type	Zener	—
Unidirectional Channels	1	—

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP36A-E3/51 is determined by the following critical parameters:

Voltage - Reverse Standoff: 36V nominal
Voltage - Breakdown (Min): 40V minimum
Voltage - Clamping (Max) @ Ipp: 58.1V maximum
Current - Peak Pulse (10/1000µs): 86.1A minimum
Power - Peak Pulse: 5000W minimum
Mounting Type: Through Hole
Package / Case: P600, Axial
Type: Zener, Unidirectional
Operating Temperature: -55°C to 175°C

Substitute parts are grouped into two categories:

Category 1: Direct Electrical and Mechanical Equivalents — Parts maintaining identical or superior electrical specifications within the same P600 axial package, with matching voltage and current ratings.

Category 2: Higher Power Capability Substitutes — Parts with the same voltage ratings but increased peak pulse current and power dissipation capacity, suitable for applications requiring enhanced transient protection margin.

Parameter Comparison

Part Number	Manufacturer	Voltage RWM (V)	Voltage Breakdown Min (V)	Voltage Clamp Max @ Ipp (V)	Peak Pulse Current (A)	Peak Pulse Power (W)	Package	Product Status
5KP36A-E3/51	Vishay	36	40	58.1	86.1	5000	P600, Axial	Obsolete
5KP36AHE3/54	Vishay	36	40	58.1	86.1	5000	P600, Axial	Active
5KP36A-E3/54	Vishay	36	40	58.1	86.1	5000	P600, Axial	Active
5KP36AE3/TR13	Microchip Technology	36	40	58.1	86.1	5000	P600, Axial	Active
1.5KE36A	Taiwan Semiconductor Corporation	30.8	34.2	49.9	31	1500	DO-201AA, Axial	Active
15KPA36A	MDE Semiconductor Inc	36	40.2	59.8	252.5	15000	P600, Axial	Active
15KPA36A-B	Littelfuse Inc.	36	40.2	59.8	252.5	15000	P600, Axial	Active
15KPA36A-HR	Littelfuse Inc.	36	40.2	59.8	252.5	15000	P600, Axial	Active
15KPA36A-HRA	Littelfuse Inc.	36	40.2	59.8	252.5	15000	P600, Axial	Active
20KPA36A	MDE Semiconductor Inc	36	40.2	61.5	328.5	20000	P600, Axial	Active

Engineering Selection Recommendations

Primary Substitutes (Direct Equivalents):

The 5KP36A-E3/54 (Vishay, Active status) and 5KP36AHE3/54 (Vishay, Active status with AEC-Q101 automotive qualification) are direct electrical and mechanical equivalents. Both maintain identical voltage and current specifications within the P600 axial package. The 5KP36A-E3/54 is available in Cut Tape packaging with 8200 units in stock, providing optimal procurement continuity. The 5KP36AHE3/54 includes automotive-grade qualification, suitable for applications requiring AEC-Q101 compliance.

The 5KP36AE3/TR13 (Microchip Technology, Active status) provides an alternative source with identical electrical specifications in Tape & Reel packaging, supporting supply chain diversification.

Higher Power Capability Substitutes:

The 15KPA36A series (15KPA36A, 15KPA36A-B, 15KPA36A-HR, 15KPA36A-HRA) and 20KPA36A maintain the 36V voltage rating while providing 15000W and 20000W peak pulse power respectively. These parts are suitable for applications requiring enhanced transient protection margin or higher energy absorption capacity. All variants are Active status with established supply availability.

Lower Power Alternative:

The 1.5KE36A (Taiwan Semiconductor Corporation, Active status) operates at reduced power (1500W) with a lower voltage standoff (30.8V) and different package (DO-201AA). This part is suitable only for applications with reduced transient energy requirements and is not recommended as a direct replacement for the 5KP36A-E3/51.

Frequently Asked Questions (FAQ)

Q: Can the 5KP36A-E3/54 directly replace the 5KP36A-E3/51?

A: Yes. The 5KP36A-E3/54 is electrically and mechanically identical, with matching 36V reverse standoff voltage, 58.1V clamping voltage, 86.1A peak pulse current, and 5000W peak pulse power. Both use the P600 axial package. The primary difference is product status: the -E3/54 is Active while the -E3/51 is Obsolete.

Q: What is the difference between 5KP36AHE3/54 and 5KP36A-E3/54?

A: Both parts are electrically identical with matching specifications. The 5KP36AHE3/54 includes AEC-Q101 automotive qualification and is designated for automotive applications. Selection depends on application requirements and compliance mandates.

Q: Can I use 15KPA36A-B instead of 5KP36A-E3/51?

A: Yes, with design consideration. The 15KPA36A-B maintains the 36V voltage rating and P600 axial package but provides 15000W peak pulse power versus 5000W. This higher power capability is compatible with the 5KP36A-E3/51 application space and provides additional transient protection margin. Clamping voltage increases slightly to 59.8V.

Q: Why is the 1.5KE36A listed as a substitute if it has different specifications?

A: The 1.5KE36A is listed based on the provided substitute data but is not recommended as a direct replacement. It operates at 30.8V reverse standoff (versus 36V) and 1500W peak pulse power (versus 5000W), with a different package (DO-201AA). Use only if application requirements explicitly permit reduced voltage and power ratings.

Q: What packaging options are available for active substitutes?

A: The 5KP36A-E3/54 is available in Cut Tape (CT) packaging. The 5KP36AHE3/54 and 15KPA36A-HR/HRA variants are available in Tape & Reel (TR) packaging. The 15KPA36A and 20KPA36A are available in Bulk packaging. Selection depends on assembly process requirements and order quantities.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitute parts maintain RoHS3 compliance, matching the original 5KP36A-E3/51 specification.

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