3KP60CA Transient Voltage Suppressor - Equivalent & Substitute Parts

Part Overview

The 3KP60CA is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole axial component operates across a temperature range of -55°C to 175°C and is ROHS3 compliant with unlimited moisture sensitivity rating.

The 3KP60CA is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Active alternatives from both Littelfuse and Micro Commercial Co provide compatible electrical and mechanical characteristics suitable for direct replacement in existing circuit designs.

Key Parameters

Parameter	Value
Voltage - Reverse Standoff (Typ)	60V
Voltage - Breakdown (Min)	66.7V
Voltage - Clamping (Max) @ Ipp	96.8V
Current - Peak Pulse (10/1000µs)	31A
Power - Peak Pulse	3000W (3kW)
Operating Temperature Range	-55°C 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 eligibility for the 3KP60CA is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): 60V
Voltage - Breakdown (Min): 66.7V minimum
Voltage - Clamping (Max) @ Ipp: within acceptable tolerance range
Current - Peak Pulse (10/1000µs): equal to or greater than 31A
Power - Peak Pulse: equal to or greater than 3000W
Operating Temperature Range: -55°C to 175°C minimum
Mounting Type: Through Hole
Type: Zener
Bidirectional Channels: 1
RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical voltage standoff and breakdown specifications while meeting or exceeding current and power dissipation ratings. Package variations (P600 vs. R-6) are acceptable provided mechanical compatibility with circuit board layouts is verified.

Parameter Comparison

Parameter	3KP60CA (Main)	5KP60CA	15KP60CA-TP	30KP60CA-TP	3KP60CA-TP
Manufacturer	Littelfuse Inc.	Littelfuse Inc.	Micro Commercial Co	Micro Commercial Co	Micro Commercial Co
Product Status	Obsolete	Active	Active	Active	Active
Voltage - Reverse Standoff (Typ)	60V	60V	60V	60V	60V
Voltage - Breakdown (Min)	66.7V	66.7V	66.7V	67V	66.7V
Voltage - Clamping (Max) @ Ipp	96.8V	96.8V	97.3V	102V	96.8V
Current - Peak Pulse (10/1000µs)	31A	52.7A	Not specified	Not specified	31A
Power - Peak Pulse	3000W	5000W	15000W	30000W	3000W
Operating Temperature Range	-55°C to 175°C	-55°C to 175°C	-55°C to 175°C	-55°C to 175°C	-55°C to 175°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	P600, Axial	P600, Axial	R-6, Axial	R-6, Axial	R-6, Axial
Type	Zener	Zener	Zener	Zener	Zener
Bidirectional Channels	1	1	1	1	1
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified

Engineering Selection Recommendations

Direct Replacement (Identical Electrical Performance):

3KP60CA-TP (Micro Commercial Co) provides identical electrical specifications with active product status and REACH compliance documentation. This part maintains the same 31A peak pulse current and 3000W power dissipation as the original 3KP60CA.

Enhanced Performance Alternatives:

5KP60CA (Littelfuse Inc.) maintains voltage specifications while providing increased peak pulse current (52.7A) and power dissipation (5000W). Active product status and ROHS3 compliance ensure long-term availability.
15KP60CA-TP (Micro Commercial Co) and 30KP60CA-TP (Micro Commercial Co) offer significantly higher power dissipation ratings (15kW and 30kW respectively) while maintaining the 60V standoff voltage specification. These parts are suitable for applications requiring enhanced transient protection margins.

All substitute parts maintain ROHS3 compliance and the required operating temperature range of -55°C to 175°C. Package variations between P600 and R-6 axial formats require mechanical verification for circuit board compatibility.

Frequently Asked Questions (FAQ)

Q: Can 5KP60CA replace 3KP60CA in all applications? A: Yes, 5KP60CA is electrically compatible with identical voltage specifications (60V standoff, 66.7V breakdown minimum, 96.8V clamping). The higher peak pulse current (52.7A vs. 31A) and power dissipation (5000W vs. 3000W) provide enhanced protection capability without affecting circuit operation.

Q: What is the difference between P600 and R-6 package formats? A: Both are through-hole axial packages suitable for PCB mounting. P600 and R-6 represent different physical form factors from different manufacturers. Mechanical compatibility with existing PCB layouts must be verified before substitution.

Q: Are 15KP60CA-TP and 30KP60CA-TP suitable for 3KP60CA applications? A: These parts maintain identical voltage specifications (60V standoff, 66.7V breakdown minimum) and are electrically compatible. The significantly higher power dissipation ratings (15kW and 30kW) make them suitable for applications requiring enhanced transient energy absorption. Circuit board thermal design must accommodate the larger package format.

Q: Why is 3KP60CA marked as obsolete? A: Littelfuse Inc. has discontinued the 3KP60CA. Active alternatives from both Littelfuse (5KP60CA) and Micro Commercial Co (3KP60CA-TP, 15KP60CA-TP, 30KP60CA-TP) provide equivalent or enhanced functionality for new designs and production continuity.

Q: Are all substitute parts ROHS3 compliant? A: 5KP60CA, 15KP60CA-TP, and 30KP60CA-TP are confirmed ROHS3 compliant. 3KP60CA-TP RoHS status is not specified in available documentation and should be verified with the supplier.

Q: What is the significance of the -TP suffix in part numbers? A: The -TP suffix indicates Tape & Reel or alternative packaging format from Micro Commercial Co. Electrical specifications remain identical to base part numbers; packaging format differs for automated assembly compatibility.

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