P4KE27CA-B Equivalent & Substitute Parts

Part Overview

The P4KE27CA-B is an active Transient Voltage Suppressor (TVS) diode manufactured by Littelfuse, designed for general-purpose voltage protection applications. This through-hole component operates across a wide temperature range (-55°C to 175°C) and is RoHS3 compliant. Finding equivalent and substitute parts is necessary to ensure design flexibility, manage supply chain continuity, and maintain component availability across different procurement channels.

Substiute Parts

P4KE27CA-B

LittelfuseIn Stock: 1094P4KE27CA-B Datasheet

Current PartRFQ

P4KE27CA

Taiwan Semiconductor CorporationIn Stock: 1058P4KE27CA Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4KE27CA-B is determined by strict equivalence across the following critical parameters:

• Voltage - Reverse Standoff (Typ): 23.1V
• Voltage - Breakdown (Min): 25.7V
• Voltage - Clamping (Max) @ Ipp: 37.5V
• Current - Peak Pulse (10/1000µs): 10.9A minimum
• Power - Peak Pulse: 400W
• Mounting Type: Through Hole
• Package / Case: DO-204AL (DO-41) Axial
• Operating Temperature Range: -55°C ~ 175°C (TJ)
• Type: Zener, Bidirectional, Single Channel
• RoHS Status: ROHS3 Compliant

The P4KE27CA (Taiwan Semiconductor Corporation) qualifies as a direct substitute based on matching all critical electrical parameters and package specifications. Minor variations in peak pulse current (11A vs. 10.9A) remain within acceptable tolerance for this component category and do not affect functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

Both the P4KE27CA-B and P4KE27CA are active products with ROHS3 compliance and REACH unaffected status, making them suitable for current design implementations. Selection between these parts should be based on:

• Availability and lead time from respective manufacturers
• Procurement channel and inventory levels
• Cost considerations within your supply chain
• Existing qualification and testing documentation for your application

The P4KE27CA from Taiwan Semiconductor Corporation provides equivalent electrical performance and identical package specifications, ensuring direct functional interchangeability in through-hole PCB applications requiring 23.1V standoff voltage protection.

Frequently Asked Questions (FAQ)

Q: Can P4KE27CA replace P4KE27CA-B in my design?

A: Yes. Both parts meet identical voltage specifications (23.1V standoff, 37.5V clamping), power ratings (400W peak pulse), and package requirements (DO-204AL through-hole). The 0.1A difference in peak pulse current (11A vs. 10.9A) does not affect functional compatibility.

Q: Are the packages physically identical?

A: Yes. Both components use the DO-204AL (DO-41) axial through-hole package, enabling direct PCB footprint compatibility without layout modifications.

Q: What is the difference between P4KE27CA and P4KE27CA-B?

A: The "-B" suffix designates the Littelfuse manufacturer variant. The base part number P4KE27CA is available from multiple manufacturers including Taiwan Semiconductor Corporation. Electrical and mechanical specifications remain equivalent across these variants.

Q: Are both parts RoHS compliant?

A: Yes. Both P4KE27CA-B and P4KE27CA are ROHS3 compliant with MSL rating of 1 (Unlimited), suitable for applications requiring environmental compliance certification.

Q: What applications are these parts suitable for?

A: Both parts are rated for general-purpose transient voltage suppression applications requiring 23.1V standoff protection and 400W peak pulse power handling in through-hole configurations.