TLP20CA Equivalent & Substitute Parts

Part Overview

The TLP20CA 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 20V reverse standoff voltage and provides peak pulse current handling of 157.4A with a maximum clamping voltage of 32.4V. The device is housed in a P600 axial through-hole package and maintains active product status with full RoHS3 compliance. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, application-specific certifications, or packaging preferences.

Substiute Parts

TLP20CA

Littelfuse Inc.In Stock: 1029TLP20CA Datasheet

Current PartRFQ

6KPE20CAH

Eaton - Electronics DivisionIn Stock: 14006KPE20CAH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for TVS diodes is determined by matching critical electrical parameters that define protection performance and circuit compatibility. The primary substitution criteria are:

Voltage Parameters: Reverse standoff voltage (20V), breakdown voltage minimum (22.2V), and maximum clamping voltage (32.4V) must be identical to ensure the device operates within the protected circuit's voltage window without nuisance triggering or inadequate protection.

Current Handling: Peak pulse current rating must meet or exceed the application requirement. The TLP20CA specifies 157.4A minimum; substitute parts with higher ratings provide additional margin.

Power Dissipation: Peak pulse power rating must support the transient energy absorption requirement. The TLP20CA is rated for 5000W; higher ratings indicate enhanced capability.

Mechanical Compatibility: Through-hole axial package format ensures direct board-level substitution without layout modification.

Environmental & Compliance: Operating temperature range (-55°C to 175°C), RoHS3 compliance, and REACH unaffected status must be maintained for regulated applications.

The 6KPE20CAH meets all these criteria with identical voltage specifications, higher current handling (203.7A), and increased power dissipation (6600W), making it a direct electrical and mechanical substitute.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection (TLP20CA): Littelfuse TLP20CA is the specified component with active product status and established supply chain availability (1009 pcs in stock). Use this part for new designs and production runs where supply is confirmed.

Substitute Selection (6KPE20CAH): Eaton 6KPE20CAH is qualified as a direct substitute when TLP20CA availability is constrained. This part meets all electrical and environmental requirements with enhanced current and power ratings, providing additional design margin. The device carries AEC-Q101 automotive qualification, suitable for applications requiring automotive-grade reliability. Both parts maintain identical voltage protection characteristics and operating temperature range.

Compliance Assurance: Both parts are RoHS3 compliant and REACH unaffected, meeting regulatory requirements for commercial and industrial applications. No additional qualification is required for substitution in existing designs.

Frequently Asked Questions (FAQ)

Q: Can 6KPE20CAH be used as a direct replacement for TLP20CA in existing designs?

A: Yes. Both devices have identical reverse standoff voltage (20V), breakdown voltage (22.2V), and clamping voltage (32.4V). The 6KPE20CAH provides higher current (203.7A vs 157.4A) and power (6600W vs 5000W) ratings, making it electrically compatible and mechanically interchangeable in through-hole axial applications.

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

A: Voltage parameters are critical: reverse standoff voltage, breakdown voltage minimum, and maximum clamping voltage must match exactly to ensure proper circuit protection. Current and power ratings must meet or exceed application requirements. Both TLP20CA and 6KPE20CAH share identical voltage specifications, confirming substitution eligibility.

Q: Are there packaging differences between these parts?

A: Both parts use through-hole axial packages. TLP20CA is specified as P600 axial; 6KPE20CAH is specified as axial. These are mechanically compatible for board-level substitution without layout modification.

Q: Do both parts meet the same compliance standards?

A: Yes. Both TLP20CA and 6KPE20CAH are RoHS3 compliant and REACH unaffected. The 6KPE20CAH carries additional AEC-Q101 automotive qualification, suitable for automotive and high-reliability applications.

Q: What is the operating temperature range for both devices?

A: Both parts operate across -55°C to 175°C (junction temperature), ensuring consistent performance across industrial and automotive temperature environments.