5KP24C Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The 5KP24C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 24V reverse standoff voltage with 5000W peak pulse power handling. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The 5KP24C operates across a temperature range of -55°C to 175°C and is housed in a P600 axial through-hole package, compliant with RoHS3 standards.

Key Parameters

Parameter	Value
Manufacturer Part Number	5KP24C
Manufacturer	Littelfuse Inc.
Category	Transient Voltage Suppressors (TVS)
Type	Zener
Voltage - Reverse Standoff (Typ)	24V
Voltage - Breakdown (Min)	25.29V
Voltage - Clamping (Max) @ Ipp	40.85V
Power - Peak Pulse	5000W (5kW)
Operating Temperature	-55°C ~ 175°C (TJ)
Mounting Type	Through Hole
Package / Case	P600, Axial
RoHS Status	ROHS3 Compliant
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitution of the 5KP24C is determined by the following critical parameters:

Voltage - Reverse Standoff: 24V (all substitutes maintain this specification)
Voltage - Breakdown (Min): 25.29V to 26.7V (acceptable range for functional equivalence)
Voltage - Clamping (Max) @ Ipp: 38.9V to 43V (within operational tolerance)
Power - Peak Pulse: 3000W to 15000W (equal or greater power rating acceptable)
Operating Temperature: -55°C minimum to 150°C or 175°C maximum
Mounting Type: Through Hole (all substitutes)
Bidirectional Channels: 1 (all substitutes)
Type: Zener (all substitutes)

Substitute parts are grouped into two categories: direct functional equivalents with identical or superior electrical performance, and alternative package configurations (P600 vs. R-6 axial) that maintain electrical compatibility while offering different form factors.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff	Voltage - Breakdown (Min)	Voltage - Clamping (Max) @ Ipp	Power - Peak Pulse	Operating Temperature	Package / Case	Product Status
5KP24C	Littelfuse Inc.	24V	25.29V	40.85V	5000W	-55°C ~ 175°C	P600, Axial	Obsolete
5KP24CA	Littelfuse Inc.	24V	26.7V	38.9V	5000W	-55°C ~ 175°C	P600, Axial	Active
SLD24-018	Littelfuse Inc.	24V	26.7V	38.9V	5000W	-55°C ~ 175°C	P600, Axial	Active
5KP24CE3/TR13	Microchip Technology	24V	26.7V	43V	5000W	-55°C ~ 175°C	P600, Axial	Active
15KP24CA-TP	Micro Commercial Co	24V	26.7V	40.5V	15000W	-55°C ~ 175°C	R-6, Axial	Active
3KP24CA-TP	Micro Commercial Co	24V	26.7V	38.9V	3000W	-55°C ~ 175°C	R-6, Axial	Active
5KP24CA-G	Comchip Technology	24V	26.7V	38.9V	5000W	-55°C ~ 150°C	R-6, Axial	Active
5KP24CA-TP	Micro Commercial Co	24V	26.7V	38.9V	5000W	-55°C ~ 175°C	R-6, Axial	Active
5KP24CAE3/TR13	Microchip Technology	24V	26.7V	38.9V	5000W	-55°C ~ 175°C	P600, Axial	Active
A5KP24CA-G	Comchip Technology	24V	26.7V	38.9V	5000W	-55°C ~ 150°C	R-6, Axial	Active
SLD24CA-AP	Micro Commercial Co	24V	25V	38.9V	6000W	-55°C ~ 175°C	R-6, Axial	Active

Engineering Selection Recommendations

For direct replacement of the obsolete 5KP24C in active production designs, 5KP24CA (Littelfuse Inc.) is the primary equivalent, maintaining identical electrical specifications and P600 axial package configuration with active product status and full RoHS3 compliance.

SLD24-018 (Littelfuse Inc.) provides an alternative from the same manufacturer with equivalent electrical performance and automotive-grade qualification (AEC-Q101), suitable for applications requiring automotive-level reliability.

5KP24CAE3/TR13 (Microchip Technology) offers equivalent performance in P600 package with tape and reel packaging, appropriate for high-volume automated assembly processes.

For applications where higher power dissipation is acceptable, 15KP24CA-TP (Micro Commercial Co) provides 15000W peak pulse power in R-6 axial package, maintaining all voltage specifications.

For applications with reduced power requirements, 3KP24CA-TP (Micro Commercial Co) provides 3000W peak pulse power in R-6 axial package.

Automotive-qualified alternatives include A5KP24CA-G (Comchip Technology) with AEC-Q101 qualification, though operating temperature is limited to -55°C to 150°C.

Frequently Asked Questions (FAQ)

Q: Can I use a substitute part with a different package type (R-6 vs. P600)?

A: Yes, both R-6 and P600 are axial through-hole packages suitable for the same PCB footprints. Verify mechanical clearance and lead spacing compatibility with your specific board layout before substitution.

Q: What is the significance of the voltage clamping range (38.9V to 43V)?

A: The clamping voltage determines the maximum voltage spike the TVS diode will allow across the protected circuit. All listed substitutes maintain clamping voltages within acceptable operational tolerance for 24V protection applications.

Q: Are there differences between Littelfuse, Microchip, Comchip, and Micro Commercial Co versions?

A: All manufacturers provide functionally equivalent 24V TVS diodes meeting the same electrical specifications. Selection may depend on supply chain availability, packaging preference, or automotive qualification requirements (AEC-Q101 available for specific variants).

Q: Why do some parts have lower operating temperature maximums (-55°C to 150°C vs. -55°C to 175°C)?

A: Operating temperature range reflects manufacturer design specifications. For applications requiring full -55°C to 175°C operation, select parts explicitly rated for this range (5KP24CA, 5KP24CA-TP, 5KP24CAE3/TR13, SLD24-018, SLD24CA-AP).

Q: What does "Active" product status mean compared to "Obsolete"?

A: Active status indicates the part is currently manufactured and available from the supplier. Obsolete status means the original 5KP24C is no longer produced, making substitution necessary for new designs and ongoing procurement.

Q: Can I substitute a higher power-rated part (15KP24CA-TP at 15000W) for the 5000W 5KP24C?

A: Yes. Higher power ratings provide additional thermal margin and are functionally compatible. Verify that your circuit design accommodates the different package form factor (R-6 vs. P600).

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