15KP54A-TP Transient Voltage Suppressor (TVS) Diode - Equivalent & Substitute Parts

Part Overview

The 15KP54A-TP is an active Transient Voltage Suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose transient voltage protection applications. This unidirectional Zener-type TVS diode features a 54V reverse standoff voltage with 87.5V maximum clamping voltage and 15kW peak pulse power dissipation capability. The device is housed in an R-6 axial through-hole package and is ROHS3 compliant with unlimited moisture sensitivity rating. Equivalent and substitute parts are identified based on matching electrical parameters including reverse standoff voltage, clamping voltage range, peak pulse power rating, and compatible through-hole axial packaging.

Substiute Parts

15KP54A-TP

Micro Commercial CoIn Stock: 154515KP54A-TP Datasheet

Current PartRFQ

30KPA54A

MDE Semiconductor IncIn Stock: 287430KPA54A Datasheet

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5KP54A

Littelfuse Inc.In Stock: 18515KP54A Datasheet

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5KP54A-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 279195KP54A-E3/54 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 15KP54A-TP are qualified based on the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Reverse standoff voltage: 54V (typical)
• Breakdown voltage minimum: 60V or greater
• Clamping voltage maximum: within acceptable range for 54V class devices (87.1V to 91.4V)
• Unidirectional Zener-type TVS diode configuration
• Through-hole axial mounting capability
• Operating temperature range: -55°C to 175°C
• ROHS3 compliance and unlimited MSL rating

Secondary Consideration:

• Peak pulse power rating: 15kW or greater (higher ratings provide equivalent or superior performance)

All identified substitutes maintain the 54V voltage class specification and are suitable for general-purpose transient voltage suppression applications with compatible board-level integration.

Parameter Comparison

Engineering Selection Recommendations

30KPA54A (MDE Semiconductor Inc): This substitute offers superior peak pulse power dissipation at 30kW, double that of the main part. The 91.4V clamping voltage is within acceptable tolerance for 54V class TVS diodes. ROHS3 compliance and unlimited MSL rating match the original specification. The P600 axial package is mechanically compatible with through-hole board layouts. This part is suitable for applications requiring enhanced transient energy absorption.

5KP54A (Littelfuse Inc.): This substitute provides 5kW peak pulse power dissipation, which is lower than the main part. The 87.1V clamping voltage and 54V reverse standoff voltage match the electrical class. ROHS3 compliance and unlimited MSL rating are maintained. The P600 axial package is through-hole compatible. This part is suitable for lower-energy transient suppression applications where the reduced power rating is acceptable.

5KP54A-E3/54 (Vishay General Semiconductor - Diodes Division): This substitute is part of the TransZorb® series with 5kW peak pulse power dissipation. The 87.1V clamping voltage and 54V reverse standoff voltage align with the electrical specification. ROHS3 compliance and unlimited MSL rating are confirmed. The P600 axial package supports through-hole mounting. This part is suitable for applications compatible with the lower power rating.

All substitutes maintain active product status and full regulatory compliance. Selection between substitutes depends on application-specific peak pulse power requirements and available board space for package variations.

Frequently Asked Questions (FAQ)

Q: Can the 30KPA54A replace the 15KP54A-TP in all applications?

A: The 30KPA54A is electrically compatible based on matching 54V reverse standoff voltage, similar clamping voltage (91.4V vs 87.5V), and through-hole axial mounting. The higher 30kW power rating provides equivalent or superior performance. However, the P600 package dimensions differ from the R-6 package; verify board layout compatibility before substitution.

Q: Are the 5KP54A and 5KP54A-E3/54 interchangeable with the 15KP54A-TP?

A: These parts share the same 54V voltage class and clamping voltage characteristics, making them electrically compatible. However, both have 5kW peak pulse power ratings, which is one-third that of the 15KP54A-TP. Use these substitutes only in applications where the lower power dissipation capacity is acceptable. Package compatibility (P600 vs R-6) must also be verified.

Q: What is the significance of the clamping voltage difference between 87.5V and 91.4V?

A: Both values fall within the acceptable clamping voltage range for 54V class TVS diodes. The 3.9V difference represents normal manufacturing tolerance and does not affect functional compatibility in general-purpose transient suppression applications. Circuit design margins should account for this variation.

Q: Do all substitute parts have the same moisture sensitivity level?

A: Yes. All parts listed, including the main part and all substitutes, have MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions for storage, handling, or reflow processes.

Q: Are there packaging considerations when switching between R-6 and P600 axial packages?

A: Both are through-hole axial packages suitable for PCB mounting. The R-6 and P600 designations indicate different physical dimensions and lead spacing. Verify that the substitute package footprint matches the PCB design before implementation. Lead diameter and spacing must be compatible with existing through-hole vias.

Q: What compliance certifications apply to all listed parts?

A: All parts are ROHS3 compliant and carry EAR99 ECCN classification. REACH status varies: the main part and 5KP54A series are REACH Unaffected; the 30KPA54A has REACH information available upon request. Verify REACH compliance documentation with the supplier if required for your application.