P6KE18C-E3/54 Equivalent & Substitute Parts

Part Overview

The P6KE18C-E3/54 is a TransZorb® series Transient Voltage Suppressor (TVS) diode designed for general-purpose transient protection applications. This through-hole component features a 14.5V reverse standoff voltage and 26.5V maximum clamping voltage with 22.6A peak pulse current capability. The part is classified as obsolete, making identification of active equivalent alternatives essential for ongoing design support and procurement continuity.

Substiute Parts

P6KE18C-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 795P6KE18C-E3/54 Datasheet

Current PartRFQ

P6KE18CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 14997P6KE18CA-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P6KE18C-E3/54 is determined by the following critical electrical and mechanical parameters:

• Reverse Standoff Voltage (Typ): 14.5V nominal operating point
• Clamping Voltage (Max) @ Ipp: 26.5V maximum transient suppression level
• Peak Pulse Current (10/1000µs): 22.6A handling capability
• Package Type: DO-204AC (DO-15) through-hole axial configuration
• Thermal Range: -55°C to 175°C junction temperature
• Series Compatibility: TransZorb® family

The P6KE18CA-E3/54 qualifies as a direct substitute based on identical package geometry, compatible voltage ratings within the same protection class, equivalent peak pulse current handling, and matching thermal specifications. Both components maintain the same base product number (P6KE18) and are manufactured by the same supplier.

Parameter Comparison

Engineering Selection Recommendations

The P6KE18CA-E3/54 is the appropriate substitute for the obsolete P6KE18C-E3/54. Selection is based on the following factors:

• Product Status: The substitute part maintains active production status, ensuring long-term availability and supply chain continuity.
• Regulatory Compliance: Both components are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
• Electrical Compatibility: The substitute operates within the same voltage protection class with marginally higher standoff and breakdown voltages (15.3V and 17.1V respectively) and improved peak pulse current handling (23.8A), providing equivalent or superior transient suppression performance.
• Physical Compatibility: Identical DO-204AC (DO-15) axial through-hole package ensures direct PCB footprint compatibility without layout modifications.
• Thermal Performance: Matching -55°C to 175°C operating range maintains thermal design margins across all application environments.

Frequently Asked Questions (FAQ)

Q: Can the P6KE18CA-E3/54 be used as a direct replacement for P6KE18C-E3/54 without PCB modifications?

A: Yes. Both components use identical DO-204AC (DO-15) axial through-hole packaging. No PCB layout changes are required for mechanical or electrical integration.

Q: What are the voltage differences between these two parts?

A: The substitute P6KE18CA-E3/54 has a slightly higher reverse standoff voltage (15.3V vs. 14.5V) and breakdown voltage (17.1V vs. 16.2V). The clamping voltage is marginally lower (25.2V vs. 26.5V). These variations remain within the same protection class and do not affect functional compatibility in general-purpose transient suppression applications.

Q: Why is the original P6KE18C-E3/54 marked as obsolete?

A: Product obsolescence is determined by the manufacturer based on market demand and production decisions. The P6KE18CA-E3/54 represents the active continuation of this protection class within the TransZorb® series.

Q: Are there any compliance or certification differences?

A: No. Both parts maintain identical ROHS3 compliance, REACH unaffected status, and MSL 1 (unlimited) moisture sensitivity ratings.

Q: What is the significance of the packaging designation "Cut Tape (CT)" for the substitute?

A: Cut Tape packaging indicates the supplier's standard delivery format for the active part. This does not affect electrical or mechanical performance and is standard for through-hole component distribution.