P6KE27 Equivalent & Substitute Parts

Part Overview

The P6KE27 is a unidirectional Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse Inc., designed for general-purpose overvoltage protection applications. This component features a 23.1V reverse standoff voltage, 39.38V maximum clamping voltage, and 600W peak pulse power rating in a through-hole DO-15 (DO-204AC) package. The P6KE27 is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for continued circuit protection functionality.

Substiute Parts

P6KE27

Littelfuse Inc.In Stock: 1028P6KE27 Datasheet

Current PartRFQ

P6KE27A

Fairchild SemiconductorIn Stock: 1600P6KE27A Datasheet

DirectRFQ

P6KE27A

Fairchild SemiconductorIn Stock: 1600P6KE27A Datasheet

DirectRFQ

P6KE27A-G

Comchip TechnologyIn Stock: 1225P6KE27A-G Datasheet

MFR RecommendedRFQ

P6KE27A-HF

Comchip TechnologyIn Stock: 889P6KE27A-HF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6KE27 is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 23.1V
• Voltage - Clamping (Max) @ Ipp: 37.5V to 39.38V range
• Power - Peak Pulse: 600W
• Type: Zener, Unidirectional
• Package / Case: DO-15 (DO-204AC) through-hole axial configuration
• Mounting Type: Through Hole

Substitute parts P6KE27A (Fairchild Semiconductor), P6KE27A-G (Comchip Technology), and P6KE27A-HF (Comchip Technology) meet these electrical and mechanical requirements. All substitutes maintain the 23.1V reverse standoff voltage, 600W peak pulse power rating, and DO-15 package specification. Clamping voltage variations (37.5V) remain within acceptable operational margins for general-purpose transient suppression applications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts (P6KE27A, P6KE27A-G, P6KE27A-HF) are classified as active products with current manufacturing status, addressing the obsolescence of the original P6KE27. Selection among substitutes is based on the following criteria:

P6KE27A (Fairchild Semiconductor) provides the widest operating temperature range (-50°C ~ 175°C) and highest peak pulse current specification (16.8A), suitable for applications requiring maximum thermal headroom.

P6KE27A-G and P6KE27A-HF (both Comchip Technology) maintain identical electrical specifications (16A peak pulse current, 37.5V clamping voltage) and both carry ROHS3 compliance certification. P6KE27A-G is supplied in Tape & Box packaging, while P6KE27A-HF is also supplied in Tape & Box format. Both support operating temperatures from -55°C to 150°C.

All substitutes maintain the critical 23.1V reverse standoff voltage and 600W peak pulse power rating required for direct circuit replacement. The reduced clamping voltage (37.5V versus 39.38V) in substitute parts represents a 4.8% improvement in transient suppression efficiency.

Frequently Asked Questions (FAQ)

Q: Can P6KE27A directly replace P6KE27 in existing circuits?

A: Yes. P6KE27A maintains the critical electrical parameters: 23.1V reverse standoff voltage, 600W peak pulse power, and identical DO-15 through-hole package configuration. The 37.5V clamping voltage is within acceptable operational tolerance for general-purpose transient suppression.

Q: What is the difference between P6KE27A-G and P6KE27A-HF?

A: Both parts are manufactured by Comchip Technology with identical electrical specifications (23.1V standoff, 37.5V clamping, 16A peak pulse current, 600W power rating). The primary distinction is packaging designation and inventory availability. Both are ROHS3 compliant and support -55°C to 150°C operating temperature range.

Q: Why does the Fairchild P6KE27A have a lower minimum operating temperature (-50°C vs -55°C)?

A: The Fairchild specification reflects its tested operating range. For applications requiring -55°C operation, Comchip alternatives (P6KE27A-G or P6KE27A-HF) are recommended.

Q: Are all substitutes RoHS compliant?

A: P6KE27A-G and P6KE27A-HF carry ROHS3 compliance certification. Fairchild P6KE27A compliance status is not specified in available documentation.

Q: Can these parts be used interchangeably in PCB designs?

A: Yes. All substitute parts use identical DO-15 (DO-204AC) axial through-hole package geometry, supporting direct PCB footprint compatibility without layout modifications.