Equivalent & Substitute Parts for 5KP15 TVS Diode

Part Overview

The 5KP15 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient protection applications. This through-hole P600 axial package component operates across a temperature range of -55°C to 175°C and provides 5000W peak pulse power protection at a 15V reverse standoff voltage.

The 5KP15 is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain the same electrical and mechanical specifications, ensuring continued availability for new designs and replacement applications.

Substiute Parts

5KP15

Littelfuse Inc.In Stock: 7185KP15 Datasheet

Current PartRFQ

5KP15A

Littelfuse Inc.In Stock: 43895KP15A Datasheet

DirectRFQ

SLD15U-017-B

Littelfuse Inc.In Stock: 1172SLD15U-017-B Datasheet

MFR RecommendedRFQ

5KP15AE3/TR13

Microchip TechnologyIn Stock: 7515KP15AE3/TR13 Datasheet

MFR RecommendedRFQ

5KP15E3/TR13

Microchip TechnologyIn Stock: 10515KP15E3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP15 is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 15V
• Voltage - Breakdown (Min): 15.84V minimum
• Power - Peak Pulse: 5000W (5kW)
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Type: Zener, Unidirectional

Substitute parts must maintain identical reverse standoff voltage, minimum breakdown voltage, peak pulse power rating, and physical package specifications. Variations in clamping voltage and peak pulse current are acceptable within the electrical design envelope, provided the core protection characteristics remain equivalent.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: 5KP15A

The 5KP15A is the direct active equivalent from Littelfuse Inc. It maintains all critical electrical parameters including 15V reverse standoff voltage, 5000W peak pulse power, and identical P600 axial through-hole packaging. Product status is Active with high inventory availability (4283 pcs). This part is supplied in Cut Tape (CT) packaging and is the preferred replacement for the obsolete 5KP15.

Manufacturer-Recommended Substitute: SLD15U-017-B

The SLD15U-017-B is a Littelfuse Inc. part from the SLD series with AEC-Q101 automotive qualification. It provides equivalent electrical performance with 15V reverse standoff voltage and 5000W peak pulse power in the same P600 axial package. This part is supplied in Bulk packaging and is suitable for applications requiring automotive-grade components. Inventory availability is 1116 pcs.

Alternative Substitutes: 5KP15AE3/TR13 and 5KP15E3/TR13

Both parts are manufactured by Microchip Technology and supplied in Tape & Reel (TR) packaging. The 5KP15AE3/TR13 maintains 24.4V clamping voltage with 205A peak pulse current, while the 5KP15E3/TR13 provides 26.9V clamping voltage with 186A peak pulse current. Both maintain the 15V reverse standoff voltage and 5000W peak pulse power rating. These parts are suitable for high-volume automated assembly applications.

All substitute parts are ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating and operate across the full -55°C to 175°C temperature range.

Frequently Asked Questions (FAQ)

Q: Can the 5KP15A directly replace the obsolete 5KP15?

A: Yes. The 5KP15A maintains identical reverse standoff voltage (15V), breakdown voltage (16.7V minimum), peak pulse power (5000W), and P600 axial through-hole package specifications. It is the direct active equivalent from the same manufacturer.

Q: What is the difference between the clamping voltage specifications across substitute parts?

A: The 5KP15 specifies 25.62V maximum clamping voltage, while 5KP15A and 5KP15AE3/TR13 specify 24.4V, and 5KP15E3/TR13 specifies 26.9V. All values remain within acceptable design margins for transient suppression applications. Selection should be based on specific circuit clamping requirements.

Q: Are the Microchip Technology parts (5KP15AE3/TR13 and 5KP15E3/TR13) compatible with the original 5KP15 application?

A: Yes. Both Microchip parts maintain the critical electrical parameters: 15V reverse standoff voltage, 5000W peak pulse power, and P600 axial through-hole package. They are suitable substitutes for general-purpose transient protection applications.

Q: What packaging options are available for substitutes?

A: The 5KP15A is supplied in Cut Tape (CT) packaging. The SLD15U-017-B is supplied in Bulk packaging. The 5KP15AE3/TR13 and 5KP15E3/TR13 are supplied in Tape & Reel (TR) packaging for automated assembly. Selection depends on procurement volume and assembly process requirements.

Q: Does the SLD15U-017-B offer any additional qualification beyond standard RoHS3 compliance?

A: Yes. The SLD15U-017-B carries AEC-Q101 automotive qualification, making it suitable for automotive and high-reliability applications requiring automotive-grade component certification.

Q: Are all substitute parts rated for the same operating temperature range?

A: Yes. All substitute parts operate across -55°C to 175°C (TJ), matching the original 5KP15 specification.