5KP7.5C-B Equivalent & Substitute Parts

Part Overview

The 5KP7.5C-B is a bidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 7.5V reverse standoff voltage and 5000W peak pulse power rating in a through-hole P600 axial package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

5KP7.5C-B

Littelfuse Inc.In Stock: 11075KP7.5C-B Datasheet

Current PartRFQ

5KP7.5CA

Littelfuse Inc.In Stock: 44295KP7.5CA Datasheet

DirectRFQ

5KP7.5CA-B

Littelfuse Inc.In Stock: 10715KP7.5CA-B Datasheet

DirectRFQ

5KP7.5CE3/TR13

Microchip TechnologyIn Stock: 10875KP7.5CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP7.5C-B is determined by strict equivalence across the following critical parameters:

• Reverse standoff voltage: 7.5V (nominal)
• Breakdown voltage minimum: within specified range
• Clamping voltage maximum: within acceptable tolerance for circuit protection
• Peak pulse power rating: 5000W (5kW)
• Bidirectional channels: 1
• Package type: P600, Axial through-hole
• Operating temperature range: -55°C ~ 175°C (TJ)
• RoHS3 compliance and MSL rating

Substitute parts must maintain identical mechanical compatibility and electrical performance within the specified parameter windows. The following active alternatives meet these criteria:

Direct Littelfuse Equivalents:

• 5KP7.5CA-B (Bulk packaging)
• 5KP7.5CA (Cut Tape packaging)

Cross-Manufacturer Alternative:

• 5KP7.5CE3/TR13 (Microchip Technology, Tape & Reel packaging)

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: 5KP7.5CA-B or 5KP7.5CA

Both Littelfuse alternatives (5KP7.5CA-B and 5KP7.5CA) are direct functional equivalents with active product status. The difference between these two is packaging format: 5KP7.5CA-B is supplied in bulk, while 5KP7.5CA is supplied in cut tape. Both maintain identical electrical specifications and are ROHS3 compliant with MSL 1 rating. Selection between these two should be based on procurement and assembly requirements.

Secondary Recommendation: 5KP7.5CE3/TR13

The Microchip Technology 5KP7.5CE3/TR13 is a cross-manufacturer alternative that meets all critical electrical and mechanical parameters. This part is supplied in tape & reel format and is actively produced. The clamping voltage maximum is 14.3V compared to 12.9V in the Littelfuse alternatives, representing a 1.4% increase within acceptable engineering tolerance for general-purpose transient suppression applications. Peak pulse current is specified at 350A versus 395.3A in the Littelfuse parts, a difference attributable to different measurement methodologies across manufacturers while maintaining the same 5kW power rating.

All three substitute parts are ROHS3 compliant and suitable for direct replacement in existing designs.

Frequently Asked Questions (FAQ)

Q: Can 5KP7.5CA-B and 5KP7.5CA be used interchangeably with 5KP7.5C-B?

A: Yes. Both parts are direct Littelfuse equivalents with identical electrical specifications and P600 axial through-hole packaging. The only difference is packaging format (bulk versus cut tape), which does not affect electrical performance or mechanical fit.

Q: What is the difference between the Littelfuse and Microchip alternatives?

A: All three substitute parts maintain the same 7.5V reverse standoff voltage, 5000W peak pulse power rating, and P600 axial package. The Microchip 5KP7.5CE3/TR13 has a maximum clamping voltage of 14.3V compared to 12.9V in the Littelfuse parts, and peak pulse current of 350A versus 395.3A. These differences remain within acceptable parameters for general-purpose transient voltage suppression.

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts (5KP7.5CA-B, 5KP7.5CA, and 5KP7.5CE3/TR13) are ROHS3 compliant with MSL 1 (unlimited moisture sensitivity level).

Q: Which substitute should I select for new designs?

A: For new designs, either 5KP7.5CA or 5KP7.5CA-B (Littelfuse) are recommended due to active product status and direct equivalence. The Microchip 5KP7.5CE3/TR13 is also suitable if cross-manufacturer sourcing is preferred or if tape & reel format is required for automated assembly.

Q: Can I use these parts in high-temperature applications?

A: Yes. All substitute parts are rated for operating temperatures from -55°C to 175°C (TJ), matching the original 5KP7.5C-B specification.

Q: What is the difference between P600 packaging and other TVS packages?

A: P600 is an axial through-hole package format. All substitute parts use identical P600 axial packaging, ensuring mechanical compatibility with existing PCB layouts and assembly processes.