5KP60A-B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 5KP60A-B is a unidirectional Zener-type transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This through-hole component operates across a temperature range of -55°C to 175°C and is RoHS3 compliant. The part is currently active in production with 980 units in stock. Substitute parts are identified based on matching electrical characteristics (reverse standoff voltage, clamping voltage, and peak pulse current) and compatible through-hole mounting configurations.

Key Parameters

Parameter	5KP60A-B
Manufacturer	Littelfuse Inc.
Series	5KP
Type	Zener
Unidirectional Channels	1
Voltage - Reverse Standoff (Typ)	60V
Voltage - Breakdown (Min)	66.7V
Voltage - Clamping (Max) @ Ipp	96.8V
Current - Peak Pulse (10/1000µs)	52.7A
Power - Peak Pulse	5000W (5kW)
Mounting Type	Through Hole
Package / Case	P600, Axial
Operating Temperature	-55°C ~ 175°C (TJ)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level (MSL)	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the 5KP60A-B are grouped based on the following electrical and mechanical criteria:

Primary Substitution Criteria:

Voltage - Reverse Standoff (Typ): 60V nominal
Voltage - Clamping (Max) @ Ipp: 96.8V nominal
Current - Peak Pulse (10/1000µs): 52.7A nominal
Power - Peak Pulse: 5000W (5kW)
Unidirectional Channels: 1
Mounting Type: Through Hole
Operating Temperature Range: -55°C to 175°C
RoHS3 Compliance

Secondary Grouping Factors:

Package compatibility (P600 axial preferred; DO-201, DO-204AL, and DO-15 packages acceptable with electrical parameter alignment)
Manufacturer availability and product status (Active)
Moisture Sensitivity Level (MSL 1 - Unlimited)

Substitutes are divided into two categories: direct equivalents (same voltage and power rating) and functional alternatives (similar voltage protection with reduced power handling or peak current capacity).

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (Typ)	Voltage - Clamping (Max) @ Ipp	Current - Peak Pulse (10/1000µs)	Power - Peak Pulse	Package / Case	RoHS Status
5KP60A-B	Littelfuse Inc.	60V	96.8V	52.7A	5000W	P600, Axial	ROHS3 Compliant
5KP60A	Diotec Semiconductor	60V	96.8V	52A	5000W	P600, Axial	ROHS3 Compliant
5KP58A	Littelfuse	58V	93.6V	54.5A	5000W	P600, Axial	ROHS3 Compliant
5KP54A	Littelfuse Inc.	54V	87.1V	58.6A	5000W	P600, Axial	ROHS3 Compliant
5KP51A	Littelfuse	51V	82.4V	61.9A	5000W	P600, Axial	ROHS3 Compliant
1.5KE68A	Meritek	Not specified	92V	16.5A	1500W	DO-201, Axial	Not specified
1.5KE62A	Taiwan Semiconductor Corporation	53V	85V	18A	1500W	DO-201AA, DO-27, Axial	ROHS3 Compliant
P4KE68A	Taiwan Semiconductor Corporation	58.1V	92V	4.5A	400W	DO-204AL, DO-41, Axial	ROHS3 Compliant
P4KE62A	Taiwan Semiconductor Corporation	53V	85V	5A	400W	DO-204AL, DO-41, Axial	ROHS3 Compliant
P6KE68A	Fairchild Semiconductor	58.1V	92V	6.8A	600W	DO-204AC, DO-15, Axial	Not specified
P6KE62A	Diotec Semiconductor	53V	85V	7.4A	600W	DO-204AC, DO-15, Axial	Not applicable

Engineering Selection Recommendations

Direct Equivalent (Preferred): The 5KP60A manufactured by Diotec Semiconductor maintains identical voltage specifications (60V reverse standoff, 96.8V clamping) and power rating (5000W) in the same P600 axial package. This part is RoHS3 compliant and active in production, making it the primary substitute when Littelfuse 5KP60A-B stock is unavailable.

Same Series Alternatives (5KP Family): The 5KP51A, 5KP54A, and 5KP58A from Littelfuse provide lower voltage protection thresholds (51V, 54V, and 58V respectively) while maintaining the 5000W power rating and P600 package. These are suitable only when circuit design permits lower voltage clamping levels. All are RoHS3 compliant and active.

Reduced Power Alternatives: The 1.5KE series (1.5KE62A and 1.5KE68A) and P4KE series (P4KE62A and P4KE68A) offer comparable voltage protection with significantly reduced power handling (1500W and 400W respectively) and lower peak pulse currents. These are applicable only in low-energy transient suppression circuits. The 1.5KE62A is RoHS3 compliant; the 1.5KE68A compliance status is not specified.

Lowest Power Alternative: The P6KE series (P6KE62A and P6KE68A) provides 600W power rating with peak pulse currents of 7.4A and 6.8A respectively. These are suitable for minimal transient energy applications only. RoHS compliance status varies by manufacturer.

All substitute parts maintain unidirectional (1-channel) Zener diode topology, through-hole mounting, and -55°C to 175°C operating temperature range where specified.

Frequently Asked Questions (FAQ)

Q: Can I use a lower voltage-rated TVS diode as a substitute? A: No. The 5KP60A-B is specified for 60V reverse standoff protection. Using a lower voltage part (such as 5KP54A at 54V) will cause the diode to conduct at lower transient voltages, potentially failing to protect the circuit adequately. Voltage selection is application-critical and cannot be reduced.

Q: What is the difference between the 5KP60A and 5KP60A-B? A: The 5KP60A-B is the Littelfuse bulk-packaged variant. The 5KP60A from Diotec Semiconductor is supplied in Tape & Reel packaging. Both maintain identical electrical specifications and are functionally equivalent.

Q: Can I substitute a P4KE68A for the 5KP60A-B? A: The P4KE68A has a clamping voltage of 92V (compared to 96.8V) and a peak pulse current of only 4.5A (compared to 52.7A). This part is suitable only for low-energy transient suppression. It cannot handle the same surge current levels and is not recommended for applications requiring the full 5000W power dissipation of the 5KP60A-B.

Q: Are all substitute parts RoHS3 compliant? A: No. The 5KP60A-B, 5KP series alternatives, 1.5KE62A, and P4KE series are RoHS3 compliant. The 1.5KE68A compliance status is not specified. The P6KE series compliance varies by manufacturer. Verify RoHS status with the supplier for your specific application requirements.

Q: What package types are available for 60V TVS diodes? A: The 5KP60A-B uses the P600 axial package. Alternatives include DO-201 (1.5KE series), DO-204AL/DO-41 (P4KE series), and DO-204AC/DO-15 (P6KE series). Package selection affects board layout and current handling capacity. The P600 package is preferred for high-current applications.

Q: Can I use the 1.5KE62A in place of the 5KP60A-B? A: The 1.5KE62A has a reverse standoff voltage of 53V (not 60V) and a power rating of only 1500W (not 5000W). This substitution is only valid if the circuit can tolerate lower voltage protection and lower energy dissipation. Peak pulse current is reduced to 18A versus 52.7A.

Q: What is the Moisture Sensitivity Level (MSL) and why does it matter? A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions and requires no special handling or storage conditions. The 5KP60A-B and most 5KP alternatives carry MSL 1 rating. Some alternatives do not specify MSL; confirm with the supplier if moisture sensitivity is a concern for your storage or assembly process.

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