5KP75 Equivalent & Substitute Parts

Part Overview

The 5KP75 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This component features a 75V reverse standoff voltage rating and 5000W peak pulse power handling capability in a through-hole P600 axial package. The 5KP75 is classified as obsolete, making equivalent substitute parts necessary for new designs and ongoing production requirements. Substitute parts must maintain electrical compatibility across voltage ratings, power dissipation, and thermal operating ranges while meeting current product availability and compliance standards.

Substiute Parts

5KP75

LittelfuseIn Stock: 11595KP75 Datasheet

Current PartRFQ

5KP75A

Littelfuse Inc.In Stock: 42025KP75A Datasheet

DirectRFQ

5KP75E3/TR13

Microchip TechnologyIn Stock: 8535KP75E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP75 is determined by the following critical parameters:

• Voltage - Reverse Standoff: Must be 75V (±tolerance as specified by manufacturer)
• Power - Peak Pulse: Must be 5000W (5kW) minimum
• Type: Must be Zener diode
• Unidirectional Channels: Must be 1 channel
• Package / Case: Must be P600, Axial through-hole
• Operating Temperature Range: Must support -55°C ~ 175°C (TJ)
• RoHS Compliance: Must meet ROHS3 standard

The identified substitute parts (5KP75A and 5KP75E3/TR13) satisfy all mandatory electrical and mechanical parameters. Variations in voltage clamping characteristics and peak pulse current are within acceptable ranges for general-purpose TVS applications and do not preclude functional equivalence.

Parameter Comparison

Engineering Selection Recommendations

5KP75A (Littelfuse Inc.) is the primary substitute for the obsolete 5KP75. Both components are manufactured by Littelfuse within the same 5KP series, ensuring design continuity and compatibility. The 5KP75A maintains identical voltage standoff and power ratings while offering lower clamping voltage (121V vs. 127.05V), which provides improved transient suppression performance. Product status is Active with 4100 units in stock, ensuring supply chain reliability. ROHS3 compliance and unlimited moisture sensitivity level (MSL 1) are maintained.

5KP75E3/TR13 (Microchip Technology) is an alternative substitute from a different manufacturer. This component meets all mandatory electrical and mechanical specifications with identical voltage standoff and power ratings. The clamping voltage is 134V, which remains within acceptable operational parameters for general-purpose TVS applications. Product status is Active with 825 units in stock. ROHS3 compliance and REACH Unaffected status are confirmed. Selection of this part may be appropriate when Littelfuse supply is constrained or when Microchip components are preferred within the design ecosystem.

Both substitutes are electrically and mechanically compatible with the original 5KP75 specification and support identical operating temperature ranges.

Frequently Asked Questions (FAQ)

Q: Can 5KP75A be used as a direct replacement for 5KP75?

A: Yes. The 5KP75A is a direct electrical and mechanical substitute. Both components share identical voltage standoff (75V), power rating (5000W), package type (P600 axial through-hole), and operating temperature range (-55°C ~ 175°C). The 5KP75A is manufactured by the same company (Littelfuse) and is currently in active production.

Q: What is the difference between 5KP75A and 5KP75E3/TR13?

A: Both parts meet the core electrical requirements (75V standoff, 5000W power). The primary differences are manufacturer (Littelfuse vs. Microchip), clamping voltage (121V vs. 134V), and packaging format (Cut Tape vs. Tape & Reel). The clamping voltage variation does not affect functional compatibility for general-purpose applications.

Q: Why is the 5KP75 marked as obsolete?

A: The 5KP75 has been discontinued by Littelfuse. The 5KP75A serves as the active replacement within the same product line, offering equivalent performance with improved availability.

Q: Are there any compliance differences between the substitutes?

A: No. Both 5KP75A and 5KP75E3/TR13 meet ROHS3 compliance requirements. The 5KP75E3/TR13 additionally confirms REACH Unaffected status. Both components maintain MSL 1 (Unlimited) moisture sensitivity level.

Q: Can I mix 5KP75A and 5KP75E3/TR13 in the same production batch?

A: Yes, from an electrical and mechanical standpoint. Both components are functionally equivalent for the 75V TVS application. However, procurement and quality assurance processes should account for different manufacturers and packaging formats (Cut Tape vs. Tape & Reel).

Q: What is the significance of the P600 package designation?

A: P600 is the axial through-hole package format used for all three components (5KP75, 5KP75A, 5KP75E3/TR13). This ensures identical PCB footprint and mounting compatibility across all substitutes.