3KP6.0-B Equivalent & Substitute Parts

Part Overview

The 3KP6.0-B is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 6V reverse standoff voltage with a 10.82V maximum clamping voltage at peak pulse current. This component is designed for general-purpose transient voltage suppression in through-hole P600 axial package configuration. The 3KP6.0-B is classified as obsolete, making identification of equivalent substitute parts necessary for ongoing design support and procurement.

Substiute Parts

3KP6.0-B

Littelfuse Inc.In Stock: 10613KP6.0-B Datasheet

Current PartRFQ

5KP6.0A-B

Littelfuse Inc.In Stock: 11405KP6.0A-B Datasheet

DirectRFQ

5KP6.0A-TP

Micro Commercial CoIn Stock: 13615KP6.0A-TP Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 3KP6.0-B is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 6V and breakdown voltage minimum of 6.32V
• Clamping Voltage: Maximum clamping voltage at peak pulse current must be compatible with circuit protection requirements
• Package Type: Through-hole axial configuration (P600 or equivalent R-6)
• Operating Temperature Range: -55°C to 175°C junction temperature
• Compliance: ROHS3 compliance and moisture sensitivity level (MSL 1)

The substitute parts identified maintain the 6V reverse standoff voltage specification and operate within the same temperature range. Both substitute parts are active products with improved or equivalent electrical performance characteristics, making them suitable replacements for the obsolete 3KP6.0-B in general-purpose transient voltage suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both 5KP6.0A-B and 5KP6.0A-TP are active products suitable for replacing the obsolete 3KP6.0-B. The 5KP6.0A-B maintains the same P600 axial package configuration as the original part, providing direct mechanical compatibility. The 5KP6.0A-TP uses an R-6 axial package, which is mechanically compatible with through-hole mounting but requires verification of board layout spacing.

Both substitute parts are ROHS3 compliant with MSL 1 rating, matching the compliance profile of the original component. The substitute parts offer higher peak pulse power ratings (5kW versus 3kW) and improved peak pulse current handling, providing enhanced transient suppression capability within the same voltage class.

Frequently Asked Questions (FAQ)

Q: Can the 5KP6.0A-B directly replace the 3KP6.0-B?

A: Yes. Both parts maintain 6V reverse standoff voltage, identical operating temperature range (-55°C to 175°C), and the same P600 axial through-hole package. The 5KP6.0A-B provides higher power dissipation capability (5kW versus 3kW), making it functionally superior for the same application.

Q: What is the difference between the P600 and R-6 packages?

A: Both are axial through-hole packages suitable for PCB mounting. The P600 is the original package designation for the 3KP6.0-B. The R-6 is the equivalent package designation used by Micro Commercial Co for the 5KP6.0A-TP. Physical dimensions and lead spacing are compatible with standard through-hole PCB layouts.

Q: Are there compliance differences between the substitute parts?

A: No. All three parts are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level). Both substitute parts maintain the same regulatory compliance profile as the original 3KP6.0-B.

Q: Why do the substitute parts have higher clamping voltages (10.3V versus 10.82V)?

A: The 5KP series parts are rated for higher peak pulse power (5kW versus 3kW). The slightly lower clamping voltage at peak pulse current reflects the improved thermal and electrical characteristics of the newer design series, while maintaining the same 6V reverse standoff voltage protection threshold.

Q: Is the 5KP6.0A-TP recommended over the 5KP6.0A-B?

A: Selection between these two active substitutes depends on package availability and procurement requirements. The 5KP6.0A-B (Littelfuse, P600 package) maintains exact package compatibility. The 5KP6.0A-TP (Micro Commercial Co, R-6 package) is an alternative source with equivalent electrical specifications and package compatibility for through-hole applications.