TP5KP40CA Equivalent & Substitute Parts

Part Overview

The TP5KP40CA is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for through-hole applications requiring bidirectional overvoltage protection. This component operates with a 40V reverse standoff voltage and provides 64.5V clamping at peak pulse current. The part maintains active product status with full automotive-grade qualification under AEC-Q101 standards. Substitute parts are identified when equivalent electrical performance and mechanical compatibility can be maintained across the specified parameter range.

Substiute Parts

TP5KP40CA

Littelfuse Inc.In Stock: 2723TP5KP40CA Datasheet

Current PartRFQ

6KPE40CAH

Eaton - Electronics DivisionIn Stock: 13226KPE40CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the TP5KP40CA is determined by matching the following critical parameters:

• Voltage - Reverse Standoff (Typ): 40V
• Voltage - Clamping (Max) @ Ipp: 64.5V
• Mounting Type: Through Hole
• Package / Case: Axial configuration
• Bidirectional Channels: 1
• Type: Zener
• Grade: Automotive
• Qualification: AEC-Q101

The 6KPE40CAH from Eaton - Electronics Division satisfies all substitution criteria. While peak pulse current (102.3A) and power dissipation (6.6kW) exceed the main part specifications, these represent enhanced performance characteristics that maintain full compatibility within the defined voltage and mechanical parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the TP5KP40CA and 6KPE40CAH maintain active product status and carry full automotive-grade qualification with AEC-Q101 certification. Selection between these parts is based on application requirements and inventory availability:

The TP5KP40CA is the primary specification component with 2658 units in stock. The 6KPE40CAH serves as a qualified substitute with 1301 units available, offering enhanced current handling (102.3A vs. 79.1A), increased power dissipation capability (6.6kW vs. 5kW), and extended maximum operating temperature (175°C vs. 150°C). Both components maintain identical voltage protection characteristics and mechanical compatibility. Selection should prioritize the specified part number unless supply constraints or application-specific performance requirements necessitate the substitute.

Frequently Asked Questions (FAQ)

Q: Can the 6KPE40CAH replace the TP5KP40CA in existing designs?

A: Yes. Both components share identical voltage specifications (40V standoff, 64.5V clamping), mounting type (through-hole axial), and automotive qualification (AEC-Q101). The substitute provides equal or superior performance across all critical protection parameters.

Q: What is the difference in peak pulse current between these parts?

A: The TP5KP40CA handles 79.1A peak pulse current, while the 6KPE40CAH handles 102.3A. This difference reflects enhanced current capacity in the substitute part. For applications requiring the specified 79.1A rating, both parts are functionally equivalent.

Q: Are there temperature rating differences?

A: The TP5KP40CA operates from -55°C to 150°C, while the 6KPE40CAH extends to 175°C maximum junction temperature. For applications operating within the -55°C to 150°C range, both parts are interchangeable.

Q: Do both parts use the same package?

A: Both components use axial through-hole packages suitable for identical PCB footprints. The TP5KP40CA specifies P600 package designation, while the 6KPE40CAH uses standard axial configuration. Physical compatibility is maintained.

Q: Which part should be selected for new designs?

A: The TP5KP40CA is the primary specification. The 6KPE40CAH is qualified as a substitute when supply availability or application-specific performance requirements warrant its selection. Both maintain equivalent protection functionality within the specified voltage range.