P4KE24A-B Equivalent & Substitute Parts

Part Overview

The P4KE24A-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 855 pieces 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

P4KE24A-B

Littelfuse Inc.In Stock: 949P4KE24A-B Datasheet

Current PartRFQ

P4KE24A

Taiwan Semiconductor CorporationIn Stock: 300250P4KE24A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE24A-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 20.5V
• Voltage - Breakdown (Min): 22.8V
• Voltage - Clamping (Max) @ Ipp: 33.2V
• Package / Case: DO-204AL (DO-41) axial through-hole
• Mounting Type: Through Hole
• Series: P4KE
• Type: Zener (Unidirectional)
• Unidirectional Channels: 1

The P4KE24A manufactured by Taiwan Semiconductor Corporation qualifies as a direct substitute. Both parts share identical voltage ratings, clamping characteristics, and mechanical form factor. Minor variations in peak pulse current (12.6A vs. 12.3A) remain within acceptable tolerance for the P4KE series specification and do not affect functional interchangeability in general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE24A-B (Littelfuse) and P4KE24A (Taiwan Semiconductor) are active production components with full RoHS3 compliance and REACH unaffected status. Selection between these parts should be based on:

• Packaging format requirements: P4KE24A-B is supplied in bulk; P4KE24A is supplied in Tape & Reel (TR) format
• Inventory availability and lead time considerations
• Supplier qualification and procurement policies
• Cost structure differences between packaging formats

Both parts meet identical electrical specifications and mechanical compatibility requirements for through-hole PCB assembly in general-purpose transient voltage suppression circuits.

Frequently Asked Questions (FAQ)

Q: Can P4KE24A (Taiwan Semiconductor) be used as a direct replacement for P4KE24A-B (Littelfuse)?

A: Yes. Both parts maintain identical voltage ratings (20.5V standoff, 22.8V breakdown, 33.2V clamping), peak pulse power (400W), operating temperature range (-55 to 175°C), and DO-204AL (DO-41) axial through-hole package format. The minor difference in peak pulse current (12.6A vs. 12.3A) is within P4KE series tolerance and does not affect functional interchangeability.

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

A: The primary difference is packaging format and manufacturer. P4KE24A-B is supplied by Littelfuse in bulk packaging, while P4KE24A is supplied by Taiwan Semiconductor in Tape & Reel (TR) format. Electrical and mechanical specifications are equivalent.

Q: Are there any compliance or certification differences?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and classified under ECCN EAR99 with identical HTSUS code 8541.10.0080.

Q: Can these parts be used interchangeably on the same PCB assembly line?

A: Yes, provided the assembly process accommodates the packaging format. Bulk packaging (P4KE24A-B) requires manual placement, while Tape & Reel (P4KE24A) is compatible with automated pick-and-place equipment. The through-hole mounting and lead geometry are identical.

Q: What applications are these parts suitable for?

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