5KP60-B Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 5KP60-B is a unidirectional transient voltage suppressor diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This axial-lead through-hole component operates with a 60V reverse standoff voltage and 5000W peak pulse power rating. The part is currently classified as obsolete, necessitating identification of active equivalent and substitute components that maintain functional compatibility within specified electrical and mechanical parameters.

Key Parameters

Parameter	5KP60-B Value	Unit
Voltage - Reverse Standoff (Typ)	60	V
Voltage - Breakdown (Min)	63.18	V
Voltage - Clamping (Max) @ Ipp	101.64	V
Power - Peak Pulse	5000	W
Unidirectional Channels	1	—
Mounting Type	Through Hole	—
Package / Case	P600, Axial	—
Operating Temperature	-55 to 175	°C
RoHS Status	ROHS3 Compliant	—

Substitute Part Grouping Explanation

Substitution of the 5KP60-B is determined by the following critical parameters:

Voltage - Reverse Standoff (Typ): Must be 60V to maintain circuit protection threshold
Power - Peak Pulse: Must be 5000W (5kW) to handle transient energy dissipation
Unidirectional Channels: Must be 1 (single polarity protection)
Mounting Type: Must be Through Hole for PCB compatibility
Package / Case: P600 axial package preferred for direct mechanical replacement; alternative packages acceptable if electrical parameters align
Operating Temperature Range: Must support -55°C to 175°C minimum
RoHS Compliance: ROHS3 compliance required for regulatory alignment

Substitute parts are grouped into two categories:

Category A - Direct P600 Package Equivalents (Preferred): Parts maintaining identical P600 axial package geometry with 60V standoff and 5000W power rating. These provide direct mechanical and electrical replacement.

Category B - Functional Equivalents (Alternative Packages): Parts with matching 60V standoff and 5000W power rating but different package types (DO-201, DO-15), suitable when package constraints permit.

Category C - Lower Power Alternatives: Parts with 60V or near-60V standoff but reduced power ratings (1500W, 600W, 400W), applicable only in applications with lower transient energy requirements.

Parameter Comparison

Part Number	Manufacturer	Voltage - Reverse Standoff (V)	Voltage - Clamping (Max) @ Ipp (V)	Power - Peak Pulse (W)	Package / Case	Product Status
5KP60-B	Littelfuse Inc.	60	101.64	5000	P600, Axial	Obsolete
5KP60A	Diotec Semiconductor	60	96.8	5000	P600, Axial	Active
5KP60A-B	Littelfuse Inc.	60	96.8	5000	P600, Axial	Active
SLD60U-017-B	Littelfuse Inc.	60	96.8	5000	P600, Axial	Active
5KP60A-E3/73	Vishay General Semiconductor - Diodes Division	60	97	5000	P600, Axial	Active
5KP60E3/TR13	Microchip Technology	60	107	5000	P600, Axial	Active
1.5KE62A	Taiwan Semiconductor Corporation	53	85	1500	DO-201AA, DO-27, Axial	Active
1.5KE68A	Meritek	—	92	1500	DO-201, Axial	Active
P6KE62A	Diotec Semiconductor	53	85	600	DO-204AC, DO-15, Axial	Active
P4KE62A-TP	Micro Commercial Co	53	85	400	DO-204AL, DO-41, Axial	Active
1N5612	Microchip Technology	49	78.5	1500	G, Axial	Active

Engineering Selection Recommendations

Primary Recommendation - Category A (Direct Replacement)

For applications requiring direct mechanical and electrical compatibility with the 5KP60-B, select from the following active P600 axial package equivalents:

5KP60A-B (Littelfuse Inc.): Maintains manufacturer continuity with active product status and identical operating temperature range (-55°C to 175°C). ROHS3 compliant. Clamping voltage of 96.8V is within acceptable tolerance of the original 101.64V specification.
5KP60A (Diotec Semiconductor): Active status with P600 package compatibility. Clamping voltage 96.8V. ROHS3 compliant. Available in Tape & Reel packaging for production environments.
5KP60A-E3/73 (Vishay General Semiconductor - Diodes Division): Active status with P600 package. Clamping voltage 97V. ROHS3 compliant. Maintains full operating temperature range.
5KP60E3/TR13 (Microchip Technology): Active status with P600 package. Clamping voltage 107V. ROHS3 compliant. Tape & Reel packaging available.
SLD60U-017-B (Littelfuse Inc.): Active status with P600 package and automotive-grade qualification (AEC-Q101). Clamping voltage 96.8V. ROHS3 compliant. Suitable for automotive applications requiring enhanced reliability.

Secondary Recommendation - Category B (Alternative Package)

When PCB layout permits alternative package geometries:

1.5KE62A (Taiwan Semiconductor Corporation): Active status, DO-201 package. Reduced power rating (1500W) and lower standoff voltage (53V) require application-level verification. Suitable for lower-energy transient environments.
1.5KE68A (Meritek): Active status, DO-201 package. Clamping voltage 92V. Reduced power rating (1500W) applicable to specific circuit requirements.

Not Recommended - Category C (Insufficient Power Rating)

P6KE62A and P4KE62A-TP: Power ratings of 600W and 400W respectively are insufficient for applications requiring 5000W transient suppression capability.
1N5612: Standoff voltage of 49V and power rating of 1500W do not meet the 60V/5000W specification of the original part.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP60A-B as a direct replacement for 5KP60-B?

A: Yes. Both parts maintain 60V reverse standoff voltage, 5000W peak pulse power, P600 axial package, and ROHS3 compliance. The 5KP60A-B is active and fully compatible for direct substitution.

Q: What is the significance of the clamping voltage difference between 5KP60-B (101.64V) and 5KP60A-B (96.8V)?

A: Both values fall within the acceptable clamping voltage range for 60V standoff TVS diodes. The 96.8V clamping voltage of the 5KP60A-B provides equivalent transient suppression performance. Selection between variants depends on circuit-specific clamping requirements.

Q: Can I substitute a 1.5KE62A for the 5KP60-B?

A: No, not as a direct replacement. The 1.5KE62A has a reduced power rating (1500W vs. 5000W) and lower standoff voltage (53V vs. 60V). Use only if circuit analysis confirms lower transient energy levels and acceptable voltage thresholds.

Q: Does package type affect electrical performance?

A: Package type does not affect electrical performance characteristics. However, P600 axial packages provide direct mechanical compatibility with existing PCB layouts designed for the 5KP60-B. Alternative packages (DO-201, DO-15, DO-41) require PCB redesign or adapter solutions.

Q: Are all recommended substitutes RoHS compliant?

A: All Category A recommendations (5KP60A, 5KP60A-B, 5KP60A-E3/73, 5KP60E3/TR13, SLD60U-017-B) are ROHS3 compliant, matching the original part's regulatory status.

Q: What is the operating temperature range compatibility?

A: All Category A recommendations support the full -55°C to 175°C operating temperature range of the original 5KP60-B. Category B alternatives (1.5KE62A, 1.5KE68A) also support this range. Verify specific application requirements before selection.

Q: Is SLD60U-017-B suitable for automotive applications?

A: Yes. The SLD60U-017-B carries automotive-grade qualification (AEC-Q101) and is suitable for automotive transient voltage suppression applications requiring enhanced reliability standards.

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