P4KE110-B Equivalent & Substitute Parts

Part Overview

The P4KE110-B is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 94V reverse standoff voltage rating and 159.6V maximum clamping voltage with 2.7A peak pulse current capability in a through-hole DO-204AL (DO-41) axial package. The part is currently classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing system support and new designs.

Substiute Parts

P4KE110-B

Littelfuse Inc.In Stock: 1092P4KE110-B Datasheet

Current PartRFQ

P4KE110A

Taiwan Semiconductor CorporationIn Stock: 888P4KE110A Datasheet

DirectRFQ

P4KE110A-B

Littelfuse Inc.In Stock: 822P4KE110A-B Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE110-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 94V
• Current - Peak Pulse (10/1000µs): 2.7A
• 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
• Unidirectional Channels: 1
• Applications: General Purpose

The identified substitute parts maintain identical reverse standoff voltage, peak pulse current, power dissipation capability, temperature operating range, and physical package specifications. Variations in clamping voltage (152V to 159.6V) and breakdown voltage minimum values fall within acceptable tolerance ranges for the P4KE series and do not preclude functional substitution in general-purpose transient suppression circuits.

Parameter Comparison

Engineering Selection Recommendations

Both P4KE110A-B and P4KE110A are direct functional equivalents to the obsolete P4KE110-B. Selection between these alternatives is based on product availability, supply chain status, and packaging requirements:

P4KE110A-B (Littelfuse Inc., Active Status): Maintains original manufacturer continuity with Littelfuse Inc. and is supplied in bulk packaging. This option is preferred for applications requiring manufacturer consistency and direct legacy support.

P4KE110A (Taiwan Semiconductor Corporation, Active Status): Provides equivalent electrical and mechanical specifications with active product status. This alternative is supplied in Tape & Reel (TR) packaging, suitable for automated assembly environments. Both parts carry ROHS3 compliance and identical electrical ratings.

Frequently Asked Questions (FAQ)

Q: Can P4KE110A and P4KE110A-B be used interchangeably with P4KE110-B?

A: Yes. Both substitute parts maintain identical reverse standoff voltage (94V), peak pulse current (2.7A), power dissipation (400W), operating temperature range (-55°C to 175°C), and physical package specifications (DO-204AL, DO-41, Axial through-hole). Differences in clamping voltage (152V vs. 159.6V) and breakdown voltage minimum values are within acceptable tolerance for general-purpose transient suppression applications.

Q: What is the difference between P4KE110A-B and P4KE110A?

A: Both parts are electrically identical with matching voltage and current ratings. The primary differences are manufacturer (Littelfuse Inc. vs. Taiwan Semiconductor Corporation) and packaging format (Bulk vs. Tape & Reel). Packaging selection depends on assembly method and production volume requirements.

Q: Why is the P4KE110-B classified as obsolete?

A: The P4KE110-B has reached end-of-life status with Littelfuse Inc. Active alternatives P4KE110A-B and P4KE110A provide equivalent functionality and are recommended for new designs and ongoing system support.

Q: Are there any compliance or certification differences between these parts?

A: All three parts (P4KE110-B, P4KE110A-B, and P4KE110A) are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited). Both substitute parts carry REACH Unaffected status, confirming regulatory compliance for industrial and commercial applications.

Q: What packaging options are available for these TVS diodes?

A: P4KE110A-B is supplied in bulk packaging, while P4KE110A is supplied in Tape & Reel (TR) format. Both maintain identical DO-204AL (DO-41) axial through-hole package specifications for direct mechanical compatibility in PCB designs.