Equivalent & Substitute Parts for 5KP10-B

Part Overview

The 5KP10-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This component features a 10V reverse standoff voltage, 17.85V maximum clamping voltage, and 5000W peak pulse power rating in a P600 axial through-hole package. The 5KP10-B is classified as obsolete; equivalent and substitute parts with active product status are available to maintain design continuity and ensure supply chain reliability.

Substiute Parts

5KP10-B

Littelfuse Inc.In Stock: 11415KP10-B Datasheet

Current PartRFQ

5KP10A

LittelfuseIn Stock: 42935KP10A Datasheet

DirectRFQ

5KP10A-B

Littelfuse Inc.In Stock: 7405KP10A-B 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-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 10V
• Voltage - Clamping (Max) @ Ipp: 17V to 18.8V range
• Power - Peak Pulse: 5000W (5kW)
• Unidirectional Channels: 1
• Package / Case: P600, Axial (primary) or DO-204AC (alternative)
• Operating Temperature: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

Substitute parts are grouped into two categories:

Category 1: Direct P600 Package Substitutes (Littelfuse 5KP Series) Parts 5KP10A, 5KP10A-B, and SLD10U-017-B maintain identical package geometry, mounting type, and electrical performance envelope. These parts are fully interchangeable at the board level.

Category 2: Alternative Package Substitute (Taiwan Semiconductor SA10A) The SA10A uses a DO-204AC (DO-15) package instead of P600. This substitute is electrically compatible but requires mechanical board layout verification due to different package dimensions.

Category 3: Microchip Alternative (5KP10E3/TR13) The 5KP10E3/TR13 maintains P600 package compatibility with slightly elevated clamping voltage (18.8V) and comparable peak pulse current performance.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Recommended for Direct Replacement)

5KP10A and 5KP10A-B are the preferred substitutes for the obsolete 5KP10-B. Both parts maintain active product status, identical P600 package geometry, and equivalent electrical performance within the specified parameter range. The 5KP10A is available in Cut Tape packaging, while 5KP10A-B is supplied in Bulk packaging. Selection between these two depends on procurement and inventory requirements.

SLD10U-017-B is an automotive-grade alternative (AEC-Q101 qualified) from Littelfuse, maintaining P600 package compatibility and 5000W peak pulse power rating. This part is suitable for applications requiring automotive-grade component qualification.

Secondary Substitute (Package Consideration Required)

SA10A from Taiwan Semiconductor Corporation is electrically compatible with the 5KP10-B but uses a DO-204AC (DO-15) package instead of P600. This substitute is appropriate only when board layout can accommodate the different package dimensions. Peak pulse power is reduced to 500W, limiting applicability to lower-power transient protection scenarios.

Alternative Substitute (Clamping Voltage Variation)

5KP10E3/TR13 from Microchip Technology maintains P600 package compatibility and 5000W peak pulse power. The maximum clamping voltage is 18.8V, which is within acceptable tolerance for general-purpose TVS applications but represents a 0.95V increase from the 5KP10-B specification.

All substitute parts maintain ROHS3 compliance and identical operating temperature range (-55°C ~ 175°C).

Frequently Asked Questions (FAQ)

Q: Can I use SA10A as a direct replacement for 5KP10-B?

A: SA10A is electrically compatible but uses a DO-204AC package instead of P600. Direct board-level substitution is not possible without layout modification. Additionally, SA10A has a maximum peak pulse power of 500W compared to 5000W for the 5KP10-B, making it unsuitable for high-energy transient protection applications.

Q: What is the difference between 5KP10A and 5KP10A-B?

A: Both parts are electrically identical with the same electrical specifications. The difference is packaging: 5KP10A is supplied in Cut Tape (CT), while 5KP10A-B is supplied in Bulk. Selection depends on procurement method and inventory management requirements.

Q: Is SLD10U-017-B suitable for non-automotive applications?

A: Yes. SLD10U-017-B is automotive-grade (AEC-Q101 qualified) but can be used in general-purpose applications. The automotive qualification indicates higher reliability standards and does not restrict use in non-automotive designs.

Q: Why does 5KP10E3/TR13 have a higher clamping voltage (18.8V) than the original 5KP10-B (17.85V)?

A: The 5KP10E3/TR13 is manufactured by Microchip Technology and represents a different design variant within the 10V reverse standoff class. The 18.8V clamping voltage remains within acceptable tolerance for general-purpose TVS applications and does not compromise transient protection performance.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (5KP10A, 5KP10A-B, SA10A, SLD10U-017-B, and 5KP10E3/TR13) are ROHS3 compliant and suitable for applications requiring environmental compliance.

Q: What is the primary reason to substitute the 5KP10-B?

A: The 5KP10-B is classified as obsolete. Substitution is necessary to ensure continued supply chain availability and design continuity. All recommended substitutes maintain active product status and equivalent electrical performance.