5KP15C-B Equivalent & Substitute Parts

Part Overview

The 5KP15C-B is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 15V reverse standoff voltage, 25.62V maximum clamping voltage, and 5000W peak pulse power rating in a through-hole P600 axial package.

The 5KP15C-B is classified as obsolete. Equivalent and substitute parts are available from active product lines that maintain the same electrical specifications and mechanical compatibility, enabling direct replacement in existing designs.

Substiute Parts

5KP15C-B

Littelfuse Inc.In Stock: 7675KP15C-B Datasheet

Current PartRFQ

5KP15CA

Littelfuse Inc.In Stock: 37845KP15CA Datasheet

DirectRFQ

5KP15CA-B

Littelfuse Inc.In Stock: 10715KP15CA-B Datasheet

DirectRFQ

SLD15-018-B

Littelfuse Inc.In Stock: 873SLD15-018-B Datasheet

MFR RecommendedRFQ

5KP15CA-TP

Micro Commercial CoIn Stock: 13485KP15CA-TP Datasheet

MFR RecommendedRFQ

5KP15CE3/TR13

Microchip TechnologyIn Stock: 9645KP15CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the 5KP15C-B is determined by the following critical parameters:

• Voltage - Reverse Standoff (Typ): 15V
• Power - Peak Pulse: 5000W (5kW)
• Mounting Type: Through Hole
• Package / Case: P600, Axial
• Type: Zener, Bidirectional
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• RoHS Status: ROHS3 Compliant

Substitute parts must maintain identical reverse standoff voltage, peak pulse power rating, and mechanical package specifications. Variations in clamping voltage and peak pulse current are acceptable within the defined electrical operating envelope, provided the part remains functionally equivalent for the intended application.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (P600 Package)

The 5KP15CA, 5KP15CA-B, and SLD15-018-B are direct substitutes for the 5KP15C-B. All three parts maintain identical reverse standoff voltage (15V), peak pulse power (5000W), operating temperature range (-55°C to 175°C), and P600 axial package configuration. These parts are active products with current manufacturing status and full ROHS3 compliance.

The SLD15-018-B variant includes AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade component certification.

Alternative Substitute (R-6 Package)

The 5KP15CA-TP, manufactured by Micro Commercial Co, provides electrical equivalence with identical voltage and power specifications. This part uses an R-6 axial package instead of P600. Selection of this part requires mechanical compatibility verification with the PCB footprint and board layout.

Secondary Substitute (P600 Package, Higher Clamping Voltage)

The 5KP15CE3/TR13, manufactured by Microchip Technology, maintains the same reverse standoff voltage and peak pulse power but features a higher maximum clamping voltage of 26.9V compared to the 5KP15C-B at 25.62V. This part is suitable for applications where slightly higher clamping voltage is acceptable or beneficial.

All substitute parts are ROHS3 compliant and operate within the same temperature range as the original component.

Frequently Asked Questions (FAQ)

Q: Can I use 5KP15CA as a direct replacement for 5KP15C-B?

A: Yes. The 5KP15CA maintains identical reverse standoff voltage (15V), peak pulse power (5000W), operating temperature range (-55°C to 175°C), and P600 axial package. The 5KP15CA is an active product with current manufacturing availability.

Q: What is the difference between 5KP15CA and 5KP15CA-B?

A: Both parts are electrically identical with the same voltage and power specifications. The difference is packaging format: 5KP15CA is supplied in Cut Tape (CT), while 5KP15CA-B is supplied in Bulk. Selection depends on procurement and assembly requirements.

Q: Why does SLD15-018-B have different specifications than 5KP15CA?

A: The SLD15-018-B is the automotive-qualified variant of the 5KP15 series, carrying AEC-Q101 certification. Electrical specifications remain equivalent (15V reverse standoff, 5000W peak pulse power). The SLD series designation indicates automotive-grade qualification.

Q: Can I use 5KP15CA-TP with its R-6 package instead of P600?

A: The 5KP15CA-TP is electrically equivalent but uses an R-6 axial package instead of P600. Mechanical compatibility with the PCB footprint must be verified before selection. If the board layout accommodates R-6 spacing, this part is functionally suitable.

Q: What is the significance of the higher clamping voltage in 5KP15CE3/TR13?

A: The 5KP15CE3/TR13 has a maximum clamping voltage of 26.9V compared to 25.62V in the 5KP15C-B. Both maintain the same 15V reverse standoff voltage and 5000W power rating. The higher clamping voltage may be suitable for applications with different transient protection requirements.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (5KP15CA, 5KP15CA-B, SLD15-018-B, 5KP15CA-TP, and 5KP15CE3/TR13) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: What is the operating temperature range for these TVS diodes?

A: All parts operate within -55°C to 175°C (TJ) junction temperature range, matching the original 5KP15C-B specification.