5KP51CA-TP Equivalent & Substitute Parts

Part Overview

The 5KP51CA-TP is a Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection applications. This through-hole axial component features a 51V reverse standoff voltage with an 82.4V maximum clamping voltage and 5kW peak pulse power rating. The device is ROHS3 compliant and maintains an active product status with 1520 units currently in stock.

Substitute parts are identified to provide alternative sourcing options when the primary component is unavailable or when application requirements necessitate higher power handling capabilities or different packaging configurations.

Substiute Parts

5KP51CA-TP

Micro Commercial CoIn Stock: 16205KP51CA-TP Datasheet

Current PartRFQ

15KPA51CA-B

Littelfuse Inc.In Stock: 103615KPA51CA-B Datasheet

SimilarRFQ

30KPA51CA

MDE Semiconductor IncIn Stock: 207930KPA51CA Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 5KP51CA-TP are qualified based on the following critical parameters that determine functional equivalence:

• Voltage - Reverse Standoff (Typ): 51V (exact match required)
• Voltage - Breakdown (Min): 56.7V to 57V (within acceptable tolerance)
• Voltage - Clamping (Max) @ Ipp: 82.4V to 86.4V (within acceptable tolerance)
• Type: Zener diode
• Bidirectional Channels: 1
• Mounting Type: Through Hole
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Applications: General Purpose
• RoHS Status: ROHS3 Compliant

The identified substitutes (15KPA51CA-B and 30KPA51CA) maintain identical reverse standoff voltage and operating temperature specifications. Variations in peak pulse power (15kW and 30kW respectively) and clamping voltage represent higher-rated alternatives suitable for applications requiring enhanced transient protection margins.

Parameter Comparison

Engineering Selection Recommendations

All three components maintain active product status and ROHS3 compliance, qualifying them for equivalent use in general-purpose transient voltage suppression applications with a 51V reverse standoff specification.

The 5KP51CA-TP (R-6 package) is the baseline reference with 5kW peak pulse power handling. The 15KPA51CA-B and 30KPA51CA (both P600 package) provide higher power dissipation capabilities at 15kW and 30kW respectively, with correspondingly higher peak pulse currents (182.1A and 350.7A).

Package differences exist between the R-6 axial format of the primary part and the P600 axial format of the substitutes. Physical board layout and PCB footprint compatibility must be verified before component selection.

Frequently Asked Questions (FAQ)

Q: Can the 15KPA51CA-B or 30KPA51CA be used as direct replacements for the 5KP51CA-TP?

A: Functional substitution is valid based on matching reverse standoff voltage (51V), breakdown voltage tolerance (56.7V to 57V), and operating temperature range (-55°C to 175°C). However, package format differs (R-6 versus P600 axial), requiring PCB footprint verification.

Q: What is the significance of the different power ratings (5kW, 15kW, 30kW)?

A: Power rating indicates peak pulse dissipation capability during transient events. Higher-rated devices (15KPA51CA-B, 30KPA51CA) provide greater margin for transient energy absorption. Selection depends on application transient severity and system protection requirements.

Q: Are there packaging considerations when substituting these parts?

A: Yes. The 5KP51CA-TP uses R-6 axial packaging, while 15KPA51CA-B and 30KPA51CA use P600 axial packaging. Physical dimensions and PCB hole spacing differ. Board layout compatibility must be confirmed before substitution.

Q: Do all three parts meet the same compliance standards?

A: All three components are ROHS3 compliant and rated for the same operating temperature range (-55°C to 175°C). REACH status varies: 5KP51CA-TP and 15KPA51CA-B are REACH Unaffected; 30KPA51CA requires request for REACH information.

Q: What determines whether a part qualifies as a substitute?

A: Substitution eligibility is based on matching reverse standoff voltage (51V), compatible breakdown voltage range (56.7V to 57V), identical zener type, single bidirectional channel configuration, through-hole mounting, and matching operating temperature specifications.