P4KE22CA-B Equivalent & Substitute Parts

Part Overview

The P4KE22CA-B is a transient voltage suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage clamping applications. This bidirectional zener diode operates with an 18.8V reverse standoff voltage and provides 30.6V maximum clamping voltage at peak pulse current. The component is housed in a DO-204AL (DO-41) axial through-hole package and is actively produced with full RoHS3 compliance. Substitute parts are identified based on matching electrical specifications and package compatibility to ensure functional equivalence in circuit applications.

Substiute Parts

P4KE22CA-B

Littelfuse Inc.In Stock: 1071P4KE22CA-B Datasheet

Current PartRFQ

P4KE22CA

Taiwan Semiconductor CorporationIn Stock: 10488P4KE22CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE22CA-B is determined by the following critical parameters:

• Voltage - Reverse Standoff: 18.8V (exact match required)
• Voltage - Clamping (Max) @ Ipp: 30.6V (exact match required)
• Current - Peak Pulse (10/1000µs): 13.4A minimum (equal or higher acceptable)
• Package / Case: DO-204AL, DO-41, Axial (exact match required)
• Mounting Type: Through Hole (exact match required)
• Operating Temperature Range: -55°C ~ 175°C (exact match required)

The P4KE22CA from Taiwan Semiconductor Corporation meets all substitution criteria with matching voltage specifications, clamping characteristics, and package configuration. Peak pulse current is 13.7A, which exceeds the minimum requirement of 13.4A, providing equivalent or superior performance.

Parameter Comparison

Engineering Selection Recommendations

The P4KE22CA from Taiwan Semiconductor Corporation is a direct functional equivalent to the P4KE22CA-B. Both components are active products with ROHS3 compliance and REACH unaffected status. Selection between these parts should be based on availability, packaging format (Bulk versus Tape & Reel), and supply chain requirements. The Taiwan Semiconductor variant offers slightly higher peak pulse current (13.7A versus 13.4A), which provides additional margin in transient suppression applications. Both parts are suitable for general-purpose voltage clamping in circuits requiring 18.8V standoff and 30.6V clamping specifications.

Frequently Asked Questions (FAQ)

Q: Can the P4KE22CA (Taiwan Semiconductor) be used as a direct replacement for the P4KE22CA-B (Littelfuse)?

A: Yes. Both components share identical voltage specifications (18.8V standoff, 30.6V clamping), matching package configuration (DO-204AL through-hole), and equivalent operating temperature range (-55°C to 175°C). The Taiwan Semiconductor variant provides 13.7A peak pulse current compared to 13.4A, maintaining or exceeding performance requirements.

Q: What is the primary difference between these substitute parts?

A: The primary differences are manufacturer identity and packaging format. Littelfuse supplies the P4KE22CA-B in Bulk packaging, while Taiwan Semiconductor provides the P4KE22CA in Tape & Reel format. Electrical specifications and package dimensions remain identical.

Q: Are there any compliance or certification differences?

A: No. Both parts are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Moisture sensitivity level is 1 (Unlimited) for both variants.

Q: Does package format affect circuit performance?

A: No. Package format (Bulk versus Tape & Reel) affects only handling, storage, and assembly processes. Electrical performance and physical dimensions of the component itself remain unchanged.

Q: What applications are these TVS diodes suitable for?

A: Both parts are designated for general-purpose transient voltage suppression. They are not rated for power line protection applications.