TLP15CA Equivalent & Substitute Parts

Part Overview

The TLP15CA is a high-reliability transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This bidirectional zener TVS operates with a 15V reverse standoff voltage and provides peak pulse current handling of 209A with a maximum clamping voltage of 24.4V. The device is housed in a P600 axial through-hole package and maintains active product status with full RoHS3 compliance. Substitute parts are identified to address inventory availability, extended lead times, or specific application requirements while maintaining electrical and mechanical compatibility.

Substiute Parts

TLP15CA

Littelfuse Inc.In Stock: 862TLP15CA Datasheet

Current PartRFQ

6KPE15CAH

Eaton - Electronics DivisionIn Stock: 12466KPE15CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the TLP15CA is determined by strict equivalence across the following critical parameters:

Voltage specifications must match exactly: reverse standoff voltage of 15V, breakdown voltage minimum of 16.7V, and clamping voltage maximum of 24.4V. These parameters define the protection threshold and response characteristics of the TVS diode.

Current handling capability must be equal to or greater than the main part specification of 209A peak pulse current (10/1000µs waveform). Peak pulse power dissipation must be equal to or greater than 5000W.

Package and mounting configuration must be through-hole axial format to ensure mechanical and electrical compatibility with existing PCB designs.

Operating temperature range must encompass the full -55°C to 175°C specification.

Bidirectional channel configuration must remain at 1 channel.

The identified substitute part 6KPE15CAH meets all these criteria while offering enhanced current handling capability (270.5A) and increased power dissipation rating (6600W), providing additional design margin.

Parameter Comparison

Engineering Selection Recommendations

Both the TLP15CA and 6KPE15CAH are active-status products suitable for direct substitution in 15V TVS protection circuits. The TLP15CA maintains Littelfuse high-reliability specifications with RoHS3 compliance. The 6KPE15CAH from Eaton carries AEC-Q101 automotive qualification, indicating enhanced qualification testing and is suitable for automotive and telecom applications.

Selection between these parts should be based on application requirements and supply chain considerations. The 6KPE15CAH provides superior current handling (270.5A versus 209A) and power dissipation (6600W versus 5000W), offering increased design margin for transient protection. Both devices maintain identical voltage specifications and operating temperature range, ensuring functional equivalence in circuit protection performance.

Frequently Asked Questions (FAQ)

Q: Can the 6KPE15CAH directly replace the TLP15CA in existing designs?

A: Yes. Both devices share identical voltage specifications (15V standoff, 16.7V breakdown, 24.4V clamping) and operate across the same temperature range (-55°C to 175°C). The through-hole axial package format is mechanically compatible. The 6KPE15CAH exceeds the current and power ratings of the TLP15CA, providing additional protection margin.

Q: What are the key electrical parameters that determine substitution compatibility?

A: Reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current rating, and peak pulse power dissipation must match or exceed the original specification. Both parts meet these criteria with identical voltage parameters and superior current/power handling in the substitute.

Q: Are there compliance or qualification differences between these parts?

A: The TLP15CA is RoHS3 compliant. The 6KPE15CAH carries AEC-Q101 automotive qualification. Both are REACH unaffected and classified as EAR99 for export control purposes. Selection should consider application-specific compliance requirements.

Q: Does the axial through-hole package remain the same for both parts?

A: Yes. Both the TLP15CA (P600 axial) and 6KPE15CAH (axial) use through-hole mounting in axial package format, ensuring PCB footprint and lead compatibility.

Q: What is the difference in current handling capability?

A: The TLP15CA handles 209A peak pulse current with 5000W peak pulse power. The 6KPE15CAH handles 270.5A peak pulse current with 6600W peak pulse power. The substitute provides approximately 29% higher current capacity and 32% higher power dissipation capability.