P4KE91CA-TP Equivalent & Substitute Parts

Part Overview

The P4KE91CA-TP is a transient voltage suppressor (TVS) diode manufactured by Micro Commercial Co, designed for general-purpose overvoltage protection applications. This through-hole component operates with a reverse standoff voltage of 77.8V and provides clamping at 125V with a peak pulse current rating of 3.3A. The part is currently in active production status with full RoHS3 compliance and unlimited moisture sensitivity rating. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, supply chain considerations, or design flexibility needs.

Substiute Parts

P4KE91CA-TP

Micro Commercial CoIn Stock: 1080P4KE91CA-TP Datasheet

Current PartRFQ

P4KE91CA

Taiwan Semiconductor CorporationIn Stock: 904P4KE91CA Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE91CA-TP is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 77.8V
• Voltage - Breakdown (Min): 86.5V
• Voltage - Clamping (Max) @ Ipp: 125V
• Current - Peak Pulse (10/1000µs): 3.3A
• Power - Peak Pulse: 400W
• Operating Temperature Range: -55°C to 175°C (TJ)
• Mounting Type: Through Hole
• Package / Case: DO-204AL, DO-41, Axial
• Type: Zener
• Bidirectional Channels: 1

The P4KE91CA manufactured by Taiwan Semiconductor Corporation meets all specified electrical and mechanical parameters and qualifies as a direct substitute. Both parts share the same base product number (P4KE91) and are packaged in equivalent through-hole configurations suitable for axial mounting applications.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE91CA-TP and P4KE91CA are active production components with identical electrical specifications and regulatory compliance. Selection between these parts should be based on availability, lead time, and procurement requirements. Both parts maintain ROHS3 compliance and REACH unaffected status, ensuring compatibility with current environmental regulations. The identical operating temperature range (-55°C to 175°C) and unlimited moisture sensitivity rating confirm functional equivalence across all specified environmental conditions.

Frequently Asked Questions (FAQ)

Q: Can P4KE91CA replace P4KE91CA-TP in existing designs?

A: Yes. Both parts are electrically and mechanically equivalent. They share identical voltage ratings (77.8V standoff, 125V clamping), current specifications (3.3A peak pulse), and power dissipation (400W). Both use through-hole DO-41/DO-204AL axial packaging and operate across the same temperature range (-55°C to 175°C).

Q: Are there package differences between these parts?

A: No. Both parts use DO-204AL, DO-41, and Axial package designations. The supplier device package designation differs only in notation (DO-41 versus DO-204AL (DO-41)), but both refer to the same physical through-hole axial configuration suitable for identical PCB layouts.

Q: Do both parts meet the same compliance standards?

A: Yes. Both P4KE91CA-TP and P4KE91CA are ROHS3 compliant, REACH unaffected, and carry MSL 1 (unlimited) moisture sensitivity ratings. They are functionally equivalent for regulatory and environmental compliance purposes.

Q: What determines substitution eligibility for TVS diodes in this series?

A: Substitution is valid when reverse standoff voltage, breakdown voltage, clamping voltage, peak pulse current, power dissipation, operating temperature range, mounting type, and package configuration are identical. The P4KE91CA meets all these criteria for the P4KE91CA-TP.