P4KE27A-B Equivalent & Substitute Parts

Part Overview

The P4KE27A-B is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose voltage protection applications. This unidirectional Zener diode operates with a reverse standoff voltage of 23.1V and provides clamping protection at 37.5V maximum. The component is packaged in DO-204AL (DO-41) through-hole format and is ROHS3 compliant. Substitute parts are identified based on matching electrical specifications and mechanical compatibility within the P4KE series.

Substiute Parts

P4KE27A-B

Littelfuse Inc.In Stock: 876P4KE27A-B Datasheet

Current PartRFQ

P4KE27A

Taiwan Semiconductor CorporationIn Stock: 756P4KE27A Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the P4KE27A-B is determined by strict alignment of the following electrical and mechanical parameters:

• Voltage - Reverse Standoff (Typ): 23.1V
• Voltage - Breakdown (Min): 25.7V
• Voltage - Clamping (Max) @ Ipp: 37.5V
• Package / Case: DO-204AL (DO-41) through-hole axial format
• Operating Temperature Range: -55°C to 175°C (TJ)
• RoHS Compliance: ROHS3 Compliant

The P4KE27A manufactured by Taiwan Semiconductor Corporation meets all substitution criteria. Both components share identical voltage specifications, thermal operating range, and package configuration. Peak pulse current specifications (10.9A vs. 11A) and power ratings (400W) remain within acceptable tolerance for general-purpose TVS applications.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE27A-B and P4KE27A are active products with ROHS3 compliance and REACH unaffected status. Selection between these components should be based on availability and packaging requirements. The Littelfuse P4KE27A-B is supplied in bulk packaging, while the Taiwan Semiconductor P4KE27A is supplied in tape and reel format. Both components meet identical electrical and thermal specifications for general-purpose TVS applications. Compliance certifications (ECCN: EAR99, HTSUS: 8541.10.0080) are equivalent across both parts.

Frequently Asked Questions (FAQ)

Q: Can the P4KE27A from Taiwan Semiconductor replace the P4KE27A-B from Littelfuse?

A: Yes. Both components share identical voltage specifications (23.1V reverse standoff, 25.7V breakdown minimum, 37.5V clamping maximum), operating temperature range (-55°C to 175°C), and DO-204AL through-hole package configuration. Peak pulse current differs marginally (10.9A vs. 11A), which remains within acceptable tolerance for general-purpose applications.

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

A: The primary difference is packaging format. The P4KE27A-B is supplied in bulk packaging, while the P4KE27A is supplied in tape and reel format. Manufacturer origin differs (Littelfuse Inc. vs. Taiwan Semiconductor Corporation), but electrical and mechanical specifications are equivalent.

Q: Are both parts suitable for the same circuit applications?

A: Yes. Both components are rated for general-purpose TVS applications with identical voltage protection characteristics and thermal operating ranges. The through-hole DO-204AL package format ensures mechanical compatibility in existing PCB designs.

Q: What compliance certifications apply to both parts?

A: Both the P4KE27A-B and P4KE27A are ROHS3 compliant, REACH unaffected, and classified under ECCN: EAR99 and HTSUS: 8541.10.0080.