Equivalent & Substitute Parts for 5KP12C TVS Diode

Part Overview

The 5KP12C is a bidirectional transient voltage suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose overvoltage protection applications. This component features a 12V reverse standoff voltage, 20.9V maximum clamping voltage, and 5000W peak pulse power rating in a through-hole P600 axial package.

The 5KP12C is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this component.

Substiute Parts

5KP12C

LittelfuseIn Stock: 6605KP12C Datasheet

Current PartRFQ

5KP12CA

Littelfuse Inc.In Stock: 64385KP12CA Datasheet

DirectRFQ

SLD12-018-B

Littelfuse Inc.In Stock: 1002SLD12-018-B Datasheet

MFR RecommendedRFQ

5KP12CE3/TR13

Microchip TechnologyIn Stock: 12215KP12CE3/TR13 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 5KP12C is determined by the following critical parameters:

• Voltage - Reverse Standoff: 12V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 20.9V or lower (to ensure protection threshold compatibility)
• Power - Peak Pulse: 5000W (exact match required)
• Package / Case: P600, Axial (mechanical and electrical compatibility)
• Mounting Type: Through Hole (circuit board integration requirement)
• Operating Temperature Range: -55°C ~ 175°C (environmental specification)

The identified substitute parts maintain these core electrical and mechanical parameters, ensuring functional equivalence within the specified application envelope.

Parameter Comparison

Engineering Selection Recommendations

5KP12CA (Littelfuse Inc.)

The 5KP12CA is an active product from the same manufacturer as the obsolete 5KP12C. It maintains identical reverse standoff voltage (12V) and peak pulse power rating (5000W). The clamping voltage is 19.9V, which is lower than the original 20.9V specification, providing enhanced protection margin. This part is available in Cut Tape packaging and represents the direct manufacturer upgrade path.

SLD12-018-B (Littelfuse Inc.)

The SLD12-018-B is an active automotive-grade TVS diode meeting AEC-Q101 qualification. It shares identical electrical parameters with the 5KP12CA (12V standoff, 19.9V clamping, 5000W power rating) and maintains full compatibility with the 5KP12C application envelope. This part is available in Bulk packaging and is suitable for applications requiring automotive-grade reliability.

5KP12CE3/TR13 (Microchip Technology)

The 5KP12CE3/TR13 is an active product from Microchip Technology with identical reverse standoff voltage (12V) and peak pulse power rating (5000W). The clamping voltage is 22V, which is higher than the original specification. This part is available in Tape & Reel packaging and is suitable for applications where slightly higher clamping voltage is acceptable.

Frequently Asked Questions (FAQ)

Q: Can the 5KP12CA directly replace the 5KP12C?

A: Yes. The 5KP12CA maintains the same reverse standoff voltage (12V), peak pulse power rating (5000W), package type (P600 axial), and operating temperature range. The lower clamping voltage (19.9V vs. 20.9V) provides improved protection characteristics.

Q: What is the difference between the SLD12-018-B and 5KP12CA?

A: Both parts have identical electrical specifications (12V standoff, 19.9V clamping, 5000W power). The primary difference is packaging: 5KP12CA is supplied in Cut Tape, while SLD12-018-B is supplied in Bulk. The SLD12-018-B carries automotive-grade qualification (AEC-Q101).

Q: Why does the 5KP12CE3/TR13 have a higher clamping voltage (22V)?

A: The 5KP12CE3/TR13 is manufactured by Microchip Technology and has a clamping voltage specification of 22V. This remains within acceptable tolerance for 12V standoff voltage applications but provides a different protection characteristic. Selection depends on specific circuit requirements.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (5KP12CA, SLD12-018-B, and 5KP12CE3/TR13) are ROHS3 compliant and maintain the same environmental compliance as the original 5KP12C.

Q: What packaging options are available?

A: The 5KP12CA is available in Cut Tape (CT) packaging. The SLD12-018-B is available in Bulk packaging. The 5KP12CE3/TR13 is available in Tape & Reel (TR) packaging. All maintain the same P600 axial through-hole package format.