5KP150-B Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The 5KP150-B is a unidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 150V reverse standoff voltage rating and 5kW peak pulse power handling capability in a through-hole P600 axial package.

The 5KP150-B is classified as obsolete. Equivalent and substitute parts are available from the same manufacturer series with identical electrical performance characteristics and package specifications, ensuring direct functional replacement in existing designs.

Substiute Parts

5KP150-B

Littelfuse Inc.In Stock: 10105KP150-B Datasheet

Current PartRFQ

5KP150A

Littelfuse Inc.In Stock: 33925KP150A Datasheet

DirectRFQ

5KP150A-B

Littelfuse Inc.In Stock: 9265KP150A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP150-B is determined by the following critical parameters:

• Reverse Standoff Voltage: 150V (identical across all substitutes)
• Peak Pulse Power Rating: 5000W (5kW) (identical across all substitutes)
• Package Type: P600, Axial through-hole (identical across all substitutes)
• Unidirectional Configuration: Single channel Zener diode (identical across all substitutes)
• Operating Temperature Range: -55°C ~ 175°C (identical across all substitutes)
• Compliance: ROHS3 Compliant (maintained across all substitutes)

The substitute parts 5KP150A and 5KP150A-B maintain identical electrical specifications and physical packaging, differing only in product status (active vs. obsolete) and packaging format (cut tape, bulk). Both substitutes are functionally equivalent for direct replacement applications.

Parameter Comparison

Engineering Selection Recommendations

Both 5KP150A and 5KP150A-B are active product alternatives to the obsolete 5KP150-B. Selection between these substitutes is based on procurement and packaging requirements:

5KP150A (Cut Tape): Suitable for automated assembly processes and moderate-volume production runs requiring tape-and-reel packaging.

5KP150A-B (Bulk): Suitable for manual assembly, repair operations, or applications where individual component handling is preferred.

Both substitutes maintain ROHS3 compliance and identical electrical performance within the 5KP series specifications. No design modifications are required for direct replacement in existing PCB layouts or circuit designs.

Frequently Asked Questions (FAQ)

Q: Can 5KP150A or 5KP150A-B be used as direct replacements for 5KP150-B?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (150V), peak pulse power rating (5kW), package type (P600 axial through-hole), and operating temperature range. Direct pin-for-pin and footprint-compatible replacement is supported.

Q: What is the difference between 5KP150A and 5KP150A-B?

A: The primary difference is packaging format. 5KP150A is supplied in cut tape (CT) format for automated pick-and-place assembly. 5KP150A-B is supplied in bulk format for manual handling and component selection. Electrical specifications and physical dimensions are identical.

Q: Why is 5KP150-B classified as obsolete?

A: Product obsolescence is determined by manufacturer lifecycle decisions. Active alternatives 5KP150A and 5KP150A-B provide equivalent functionality and are recommended for new designs and replacement applications.

Q: Are there any electrical performance differences between the main part and substitutes?

A: The voltage breakdown minimum and clamping voltage specifications differ slightly between 5KP150-B (158.4V breakdown, 255.15V clamp) and the substitutes (167V breakdown, 243V clamp). Both sets of values fall within acceptable operating ranges for the 150V reverse standoff voltage class. Peak pulse power rating and thermal operating range remain identical.

Q: What compliance certifications apply to these parts?

A: All parts (5KP150-B, 5KP150A, 5KP150A-B) are ROHS3 compliant with MSL rating of 1 (unlimited moisture sensitivity). REACH status for active substitutes is unaffected.