Littelfuse 5KP7.5 Transient Voltage Suppressor Equivalent & Substitute Parts

Part Overview

The Littelfuse 5KP7.5 is a unidirectional Zener transient voltage suppressor (TVS) diode designed for general-purpose overvoltage protection applications. This component features a 7.5V reverse standoff voltage, 5000W peak pulse power rating, and through-hole P600 axial packaging. The 5KP7.5 is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

5KP7.5

LittelfuseIn Stock: 9055KP7.5 Datasheet

Current PartRFQ

5KP7.5A

Littelfuse Inc.In Stock: 53045KP7.5A Datasheet

DirectRFQ

5KP7.5E3/TR13

Microchip TechnologyIn Stock: 10885KP7.5E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP7.5 is determined by the following critical parameters:

• Voltage - Reverse Standoff: 7.5V (exact match required)
• Voltage - Breakdown (Min): 8.33V or higher (acceptable range)
• Power - Peak Pulse: 5000W (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: P600, Axial (exact match required)
• Unidirectional Channels: 1 (exact match required)
• Operating Temperature Range: -55°C ~ 175°C (exact match required)
• RoHS Status: ROHS3 Compliant (exact match required)

The identified substitute parts meet all mandatory electrical and mechanical parameters, ensuring direct functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are classified as active products, ensuring long-term availability and supply chain continuity compared to the obsolete 5KP7.5. The 5KP7.5A from Littelfuse maintains manufacturer consistency and is available in Cut Tape packaging. The 5KP7.5E3/TR13 from Microchip Technology is available in Tape & Reel format and represents a cross-manufacturer alternative.

All three parts maintain ROHS3 compliance and identical operating temperature specifications. The voltage clamping characteristics differ slightly between alternatives: the 5KP7.5A exhibits the lowest maximum clamping voltage at 12.9V, while the 5KP7.5E3/TR13 reaches 14.3V. Both alternatives meet the minimum breakdown voltage requirement of 8.33V, exceeding the original part's 7.89V specification.

Selection between active alternatives should be based on packaging requirements, supplier availability, and specific circuit clamping voltage tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can the 5KP7.5A directly replace the obsolete 5KP7.5?

A: Yes. The 5KP7.5A maintains identical reverse standoff voltage (7.5V), peak pulse power (5000W), through-hole mounting, P600 axial package, and operating temperature range. Both are ROHS3 compliant Zener TVS diodes with single unidirectional channels.

Q: What is the difference between the 5KP7.5A and 5KP7.5E3/TR13?

A: Both are functionally equivalent substitutes with identical reverse standoff voltage and power ratings. The primary differences are manufacturer (Littelfuse vs. Microchip), packaging format (Cut Tape vs. Tape & Reel), and voltage clamping characteristics (12.9V vs. 14.3V maximum). The 5KP7.5E3/TR13 exhibits higher peak pulse current (350A vs. 395.3A).

Q: Are packaging format differences significant for substitution?

A: Packaging format (Cut Tape vs. Tape & Reel) affects supply chain logistics and automated assembly compatibility but does not impact electrical or mechanical performance. Selection depends on production equipment and supplier availability.

Q: Do all substitute parts meet compliance requirements?

A: Yes. All listed alternatives are ROHS3 compliant with MSL rating of 1 (Unlimited) and EAR99 export classification, matching the original part's regulatory status.

Q: What voltage clamping range is acceptable for circuit compatibility?

A: The original 5KP7.5 specifies 14.65V maximum clamping voltage. The 5KP7.5A (12.9V) operates below this specification, while the 5KP7.5E3/TR13 (14.3V) operates above. Circuit design must confirm tolerance for these variations.