5KP36C-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP36C-B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 36V reverse standoff voltage rating with 5000W peak pulse power handling capability in a P600 axial through-hole package. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility for circuit protection requirements.

Key Parameters

Parameter	Value
Manufacturer Part Number	5KP36C-B
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Bidirectional Channels	1
Voltage - Reverse Standoff (Typ)	36V
Voltage - Breakdown (Min)	37.89V
Voltage - Clamping (Max) @ Ipp	61.01V
Power - Peak Pulse	5000W (5kW)
Package / Case	P600, Axial
Mounting Type	Through Hole
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP36C-B is determined by the following critical parameters:

Primary Compatibility Criteria:

Voltage - Reverse Standoff (Typ): 36V nominal
Voltage - Breakdown (Min): minimum 37.89V
Voltage - Clamping (Max) @ Ipp: maximum 61.01V
Power - Peak Pulse: minimum 5000W (5kW)
Type: Zener, Bidirectional
Mounting Type: Through Hole
Applications: General Purpose

Package Considerations: Substitutes are grouped into two categories based on package compatibility:

P600 Package Direct Substitutes - Maintain identical P600 axial package for direct board-level replacement without layout modification
Alternative Package Substitutes - Provide functional equivalence with different package types (DO-201, DO-15, R-6) requiring board layout adaptation

Substitutes must maintain the 36V standoff voltage specification and support minimum 5000W peak pulse power to ensure equivalent transient suppression performance. Operating temperature range and RoHS compliance are secondary selection criteria based on application requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Power - Peak Pulse	Package / Case	Product Status	Operating Temperature
5KP36C-B	Littelfuse Inc.	36V	37.89V	61.01V	5000W	P600, Axial	Obsolete	-55°C ~ 175°C
5KP36CA	Diotec Semiconductor	36V	40V	58.1V	5000W	P600, Axial	Active	-50°C ~ 175°C
5KP36CA-B	Littelfuse Inc.	36V	40V	58.1V	5000W	P600, Axial	Active	-55°C ~ 175°C
SLD36-018-B	Littelfuse Inc.	36V	40V	58.1V	5000W	P600, Axial	Active	-55°C ~ 175°C
15KP36CA-TP	Micro Commercial Co	36V	40V	59.7V	15000W	R-6, Axial	Active	-55°C ~ 175°C
1.5KE36CA	Good-Ark Semiconductor	30.8V	34.2V	49.9V	1500W	DO-201AE, Axial	Active	-55°C ~ 175°C
1.5KE39CA	Taiwan Semiconductor Corporation	33.3V	37.1V	53.9V	1500W	DO-201, Axial	Active	-55°C ~ 150°C
1.5KE43CA	Taiwan Semiconductor Corporation	36.8V	40.9V	59.3V	1500W	DO-201, Axial	Active	-55°C ~ 175°C
P6KE36CA	Taiwan Semiconductor Corporation	30.8V	34.2V	49.9V	600W	DO-15, Axial	Active	-
SA36CA	Taiwan Semiconductor Corporation	36V	40V	58.1V	500W	DO-15, Axial	Active	-55°C ~ 175°C

Engineering Selection Recommendations

Tier 1 - Direct P600 Package Substitutes (Recommended for Direct Replacement):

5KP36CA-B (Littelfuse Inc.) and SLD36-018-B (Littelfuse Inc.) are the primary substitutes. Both maintain identical P600 axial package geometry, 36V standoff voltage, 5000W peak pulse power, and -55°C to 175°C operating temperature range. These components enable direct board-level replacement without layout modification. 5KP36CA-B is available in active status with 5000 pcs inventory. SLD36-018-B includes AEC-Q101 automotive qualification and is available with 1159 pcs inventory.

5KP36CA (Diotec Semiconductor) provides equivalent electrical performance in P600 package with 5000W power rating and active product status. Operating temperature minimum is -50°C versus -55°C on the original part. This component is available with 16920 pcs inventory.

Tier 2 - Higher Power Alternative (R-6 Package):

15KP36CA-TP (Micro Commercial Co) offers 15000W peak pulse power in R-6 axial package, providing enhanced transient suppression capability. This component maintains 36V standoff voltage and -55°C to 175°C operating temperature. Board layout modification is required due to different package footprint. 4100 pcs inventory available.

Tier 3 - Lower Power Alternatives (DO-201 and DO-15 Packages):

1.5KE39CA and 1.5KE43CA (Taiwan Semiconductor Corporation) provide 1500W peak pulse power in DO-201 axial package. 1.5KE39CA operates at 33.3V standoff with -55°C to 150°C temperature range. 1.5KE43CA operates at 36.8V standoff with -55°C to 175°C temperature range. These components are suitable for applications with reduced transient energy requirements.

P6KE36CA (Taiwan Semiconductor Corporation) and SA36CA (Taiwan Semiconductor Corporation) provide 600W and 500W peak pulse power respectively in DO-15 axial package. These components are suitable only for low-energy transient suppression applications and represent significant power derating from the original 5000W specification.

All substitute components listed are ROHS3 compliant and maintain general-purpose application classification.

Frequently Asked Questions (FAQ)

Q: Can 5KP36CA-B directly replace 5KP36C-B without board modification?

A: Yes. Both components use identical P600 axial through-hole package, 36V standoff voltage, and 5000W peak pulse power rating. Direct board-level substitution is possible without layout changes.

Q: What is the difference between 5KP36CA-B and SLD36-018-B?

A: Both components provide identical electrical specifications (36V standoff, 5000W power, 58.1V clamping voltage) in P600 package. SLD36-018-B includes AEC-Q101 automotive qualification and is designated for automotive applications. Selection depends on application requirements.

Q: Why are 1.5KE series components listed as substitutes if they have lower power ratings?

A: 1.5KE series components (1500W) represent functional alternatives for applications with reduced transient energy requirements. They maintain similar voltage characteristics and through-hole mounting but cannot support the full 5000W transient energy of the original part. Use only when application transient energy is confirmed below 1500W.

Q: Can SA36CA or P6KE36CA replace 5KP36C-B?

A: These components are not recommended as direct substitutes. SA36CA provides only 500W peak pulse power and P6KE36CA provides only 600W peak pulse power, representing significant power derating from the 5000W requirement. Use only in applications with confirmed low-energy transient suppression needs.

Q: What package considerations apply when selecting 15KP36CA-TP?

A: 15KP36CA-TP uses R-6 axial package instead of P600. Board layout modification is required to accommodate different lead spacing and package dimensions. This component provides enhanced 15000W peak pulse power capability for high-energy transient suppression applications.

Q: Are all substitute components RoHS compliant?

A: Yes. All listed substitute components maintain ROHS3 compliance, consistent with the original 5KP36C-B specification.

Q: What is the operating temperature consideration for 1.5KE39CA?

A: 1.5KE39CA operates at -55°C to 150°C, which is 25°C lower maximum temperature than the original part (-55°C to 175°C). Verify application maximum operating temperature does not exceed 150°C before selection.

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