P4KE22A-B Equivalent & Substitute Parts

Part Overview

The P4KE22A-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose transient voltage protection applications. This through-hole component operates across a wide temperature range (-55°C to 175°C) and is RoHS3 compliant. The part is currently in active production status with 724 units available in bulk packaging. Equivalent and substitute parts are identified when they maintain identical electrical performance characteristics and mechanical compatibility within the DO-204AL (DO-41) axial package format.

Substiute Parts

P4KE22A-B

Littelfuse Inc.In Stock: 795P4KE22A-B Datasheet

Current PartRFQ

P4KE22A

Taiwan Semiconductor CorporationIn Stock: 5754P4KE22A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE22A-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 18.8V
• Voltage - Breakdown (Min): 20.9V
• Voltage - Clamping (Max) @ Ipp: 30.6V
• Current - Peak Pulse (10/1000µs): within acceptable tolerance
• Power - Peak Pulse: 400W
• Package / Case: DO-204AL (DO-41) axial through-hole
• Operating Temperature Range: -55°C to 175°C
• Series: P4KE
• Type: Zener, Unidirectional

Substitute parts must maintain identical voltage specifications and thermal operating range. Peak pulse current may vary within manufacturer tolerances. Packaging format and mounting type must remain unchanged to ensure mechanical and electrical compatibility in existing circuit designs.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE22A-B (Littelfuse Inc.) and P4KE22A (Taiwan Semiconductor Corporation) are active production components with identical electrical specifications and mechanical compatibility. Selection between these parts should be based on:

• Packaging format availability: P4KE22A-B is supplied in bulk packaging; P4KE22A is supplied in tape & reel format
• Supply chain requirements: Choose based on inventory availability and procurement lead times
• Regulatory compliance: Both parts maintain ROHS3 compliance and REACH unaffected status, suitable for regulated applications
• Current rating tolerance: P4KE22A provides 13.7A peak pulse current versus 13.4A for P4KE22A-B, both within the P4KE22 series specification

Both parts are functionally equivalent for general-purpose transient voltage suppression applications requiring 18.8V standoff voltage protection in DO-204AL through-hole packages.

Frequently Asked Questions (FAQ)

Q: Can P4KE22A (Taiwan Semiconductor) directly replace P4KE22A-B (Littelfuse) in existing designs?

A: Yes. Both parts share identical voltage specifications (18.8V standoff, 20.9V breakdown, 30.6V clamping), power rating (400W), operating temperature range (-55°C to 175°C), and DO-204AL axial through-hole package format. The 0.3A difference in peak pulse current (13.7A vs. 13.4A) falls within acceptable manufacturing tolerances for the P4KE22 series.

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

A: The main differences are manufacturer origin and packaging format. P4KE22A-B is supplied by Littelfuse in bulk packaging, while P4KE22A is supplied by Taiwan Semiconductor Corporation in tape & reel format. Electrical performance and mechanical compatibility are equivalent.

Q: Are both parts suitable for high-temperature applications?

A: Yes. Both parts operate across the full temperature range of -55°C to 175°C (TJ), making them suitable for industrial and automotive applications requiring extended thermal performance.

Q: Do packaging differences affect circuit board assembly?

A: Packaging format (bulk vs. tape & reel) affects procurement and automated assembly processes but does not impact electrical performance or mechanical fit. The physical component dimensions and lead configuration remain identical in the DO-204AL package.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical RoHS3 compliance and REACH unaffected status, ensuring regulatory compatibility across applications.