Littelfuse 5KP10 Transient Voltage Suppressor (TVS) Equivalent & Substitute Parts

Part Overview

The Littelfuse 5KP10 is a unidirectional Zener-type transient voltage suppressor in P600 axial package designed for general-purpose overvoltage protection applications. With a 10V reverse standoff voltage and 5000W peak pulse power rating, this component provides robust transient suppression across industrial and commercial systems.

The 5KP10 is classified as obsolete, necessitating identification of functionally equivalent active alternatives that maintain electrical and mechanical compatibility for new designs and production continuity.

Substiute Parts

5KP10

LittelfuseIn Stock: 10545KP10 Datasheet

Current PartRFQ

5KP10A

LittelfuseIn Stock: 42935KP10A Datasheet

DirectRFQ

SA10A

Taiwan Semiconductor CorporationIn Stock: 2322SA10A Datasheet

MFR RecommendedRFQ

SLD10U-017-B

Littelfuse Inc.In Stock: 935SLD10U-017-B Datasheet

MFR RecommendedRFQ

5KP10E3/TR13

Microchip TechnologyIn Stock: 7555KP10E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP10 is determined by the following critical parameters:

• Voltage Rating: Reverse standoff voltage of 10V and clamping voltage in the range of 17V to 18.8V
• Power Dissipation: Peak pulse power rating of 5000W (5kW)
• Package Compatibility: P600 axial through-hole package or functionally equivalent package
• Temperature Range: Operating range of -55°C to 175°C
• Device Type: Unidirectional Zener TVS diode

Substitute parts are grouped into two categories based on package and electrical characteristics:

Category A - Direct Package Match (P600 Axial): Parts maintaining identical P600 axial package geometry with equivalent or superior electrical performance.

Category B - Alternative Package (DO-204AC): Parts with different package form factor but equivalent electrical function, requiring mechanical redesign consideration.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (P600 Package - Direct Replacement)

The 5KP10A, SLD10U-017-B, and 5KP10E3/TR13 maintain P600 axial package compatibility with the original 5KP10. All three are active products with ROHS3 compliance and unlimited moisture sensitivity rating.

5KP10A is the most direct electrical equivalent, manufactured by Littelfuse with identical 10V standoff voltage, 17V clamping voltage, and 5000W power rating. Current rating of 300A peak pulse supports the full power dissipation specification.

SLD10U-017-B offers equivalent electrical performance with automotive-grade qualification (AEC-Q101) and 300A peak pulse current. The slightly higher breakdown voltage minimum (11.8V) remains within acceptable tolerance for general-purpose applications.

5KP10E3/TR13 from Microchip Technology provides 5000W power rating with marginally higher clamping voltage (18.8V) and 266A peak pulse current, suitable for applications tolerating the increased clamping threshold.

Secondary Substitute (Alternative Package - DO-204AC)

SA10A from Taiwan Semiconductor Corporation maintains electrical compatibility with 10V standoff and 17V clamping voltage but uses DO-204AC (DO-15) package instead of P600. This substitute requires mechanical redesign of the circuit board layout and component mounting. The 30A peak pulse current and 500W power rating represent reduced transient handling capacity, limiting applicability to lower-energy transient environments.

Frequently Asked Questions (FAQ)

Q: Can 5KP10A directly replace 5KP10 without circuit board modification?

A: Yes. The 5KP10A maintains identical P600 axial package geometry, mounting footprint, and lead spacing. No circuit board redesign is required. Electrical parameters are equivalent or superior.

Q: What is the primary reason for substituting the obsolete 5KP10?

A: The 5KP10 is classified as obsolete and no longer manufactured. Active alternatives ensure design continuity and production availability. The 5KP10A is the recommended direct replacement from the same manufacturer.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All listed substitutes—5KP10A, SLD10U-017-B, 5KP10E3/TR13, and SA10A—are ROHS3 compliant with unlimited moisture sensitivity rating (MSL 1).

Q: Why does SA10A have lower power rating than other substitutes?

A: SA10A uses DO-204AC package, which has reduced thermal dissipation capability compared to P600 package. The 500W rating reflects this physical constraint. SA10A is suitable only for applications with lower transient energy requirements.

Q: Can I use SLD10U-017-B in automotive applications?

A: Yes. SLD10U-017-B carries AEC-Q101 automotive qualification, making it suitable for automotive-grade transient suppression. The 5KP10A and 5KP10E3/TR13 do not carry automotive qualification.

Q: What is the difference between 5KP10A and 5KP10E3/TR13 clamping voltages?

A: 5KP10A clamps at 17V maximum, while 5KP10E3/TR13 clamps at 18.8V maximum. Both are within acceptable tolerance for 10V standoff applications. Selection depends on circuit sensitivity to clamping voltage threshold.

Q: Is package change from P600 to DO-204AC acceptable?

A: Package change requires circuit board redesign and is not recommended for direct substitution. Use only if mechanical redesign is feasible and the reduced 500W power rating meets application requirements.