5KP75C-B Equivalent & Substitute Parts

Part Overview

The 5KP75C-B is a bidirectional Zener transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., rated for 75V reverse standoff voltage with 5000W peak pulse power handling. Designed for general-purpose transient voltage protection in through-hole P600 axial package configuration, this component is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

5KP75C-B

Littelfuse Inc.In Stock: 10755KP75C-B Datasheet

Current PartRFQ

5KP75CA

Diotec SemiconductorIn Stock: 39405KP75CA Datasheet

DirectRFQ

5KP75CA-B

Littelfuse Inc.In Stock: 9315KP75CA-B Datasheet

DirectRFQ

15KP75CA-TP

Micro Commercial CoIn Stock: 78615KP75CA-TP Datasheet

MFR RecommendedRFQ

30KP75CA-TP

Micro Commercial CoIn Stock: 116730KP75CA-TP Datasheet

MFR RecommendedRFQ

5KP75CE3/TR13

Microchip TechnologyIn Stock: 9965KP75CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP75C-B is determined by the following critical parameters:

Primary Matching Criteria:

• Voltage - Reverse Standoff (Typ): 75V
• Type: Zener, Bidirectional
• Bidirectional Channels: 1
• Power - Peak Pulse: 5000W minimum
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C minimum to 175°C maximum
• RoHS3 Compliance

Secondary Compatibility Factors:

• Package / Case: P600 or R-6 axial configurations
• Voltage - Breakdown (Min): 78.93V to 83.8V range
• Voltage - Clamping (Max) @ Ipp: 119.4V to 134V range

Substitute parts are grouped into two categories: direct replacements maintaining identical power ratings (5000W) and higher-power alternatives (15000W and 30000W) suitable for applications requiring enhanced transient suppression capability.

Parameter Comparison

Engineering Selection Recommendations

Direct Replacement (5000W Power Rating):

The 5KP75CA-B (Littelfuse Inc., Active status) is the primary direct substitute, maintaining identical power dissipation, P600 package configuration, and operating temperature range. This part is recommended for applications requiring pin-for-pin compatibility with the obsolete 5KP75C-B.

The 5KP75CA (Diotec Semiconductor, Active status) provides equivalent electrical performance in P600 package with identical 5000W power rating. Operating temperature minimum is -50°C versus -55°C for the main part; this difference is acceptable for most general-purpose applications.

The 5KP75CE3/TR13 (Microchip Technology, Active status) maintains P600 package compatibility and 5000W power rating with ROHS3 compliance. Voltage clamping is 134V, representing the highest clamping voltage among 5000W alternatives.

Higher Power Alternatives (15000W and 30000W):

The 15KP75CA-TP and 30KP75CA-TP (Micro Commercial Co, Active status) offer 15kW and 30kW peak pulse power respectively, suitable for applications requiring enhanced transient suppression beyond the original 5kW specification. Both use R-6 axial package configuration and maintain 75V reverse standoff voltage with ROHS3 compliance.

All substitute parts maintain ROHS3 compliance and are currently in active production status, ensuring long-term component availability.

Frequently Asked Questions (FAQ)

Q: Can I use a higher power-rated TVS diode (15KP75CA-TP or 30KP75CA-TP) as a substitute for the 5KP75C-B?

A: Yes. Higher power-rated TVS diodes with matching 75V reverse standoff voltage, Zener type, and through-hole mounting are functionally compatible. The increased power rating provides additional transient suppression capability without compromising circuit protection. Package configuration differs (R-6 versus P600), requiring PCB layout verification.

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

A: Both are through-hole axial packages for TVS diodes. P600 and R-6 differ in physical dimensions and lead spacing. PCB footprint compatibility must be verified before substitution. Consult manufacturer datasheets for precise dimensional specifications.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts meet ROHS3 compliance requirements, matching the environmental and regulatory status of the 5KP75C-B.

Q: Why is the 5KP75C-B classified as obsolete?

A: Obsolete status indicates the part is no longer manufactured by Littelfuse Inc. Active substitute parts from alternative manufacturers provide equivalent or superior performance for new designs and field replacements.

Q: What is the significance of voltage clamping variation among substitutes?

A: Voltage clamping (Max) @ Ipp ranges from 119.4V to 134V across substitutes. Lower clamping voltage provides tighter transient suppression; higher clamping voltage allows greater voltage transients before suppression. Selection depends on specific circuit protection requirements. All values remain within acceptable operating parameters for 75V standoff applications.

Q: Can I substitute 5KP75CA (Diotec) for 5KP75CA-B (Littelfuse)?

A: Yes. Both parts maintain identical electrical specifications (75V standoff, 5000W power, P600 package, ROHS3 compliance). The primary difference is manufacturer and packaging format (Tape & Reel versus Bulk). Operating temperature minimum for Diotec part is -50°C versus -55°C for Littelfuse; this is acceptable for general-purpose applications.