P4KE18C-E3/54 Equivalent & Substitute Parts

Part Overview

The P4KE18C-E3/54 is a TransZorb® 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 a peak pulse current rating of 15.1A. The part is currently classified as obsolete, making identification of suitable substitute components essential for ongoing design support and procurement continuity.

Substiute Parts

P4KE18C-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 847P4KE18C-E3/54 Datasheet

Current PartRFQ

P4KE18CA-E3/54

Vishay General Semiconductor - Diodes DivisionIn Stock: 3458P4KE18CA-E3/54 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the P4KE18C-E3/54 is determined by the following critical electrical and mechanical parameters:

Electrical Compatibility Criteria:

• Reverse standoff voltage within acceptable tolerance of 14.5V
• Clamping voltage maximum not exceeding 26.5V
• Peak pulse current capability of 15.1A or greater
• Peak pulse power rating of 400W or greater
• Operating temperature range of -55°C to 175°C (TJ)

Mechanical Compatibility Criteria:

• Through-hole mounting configuration
• DO-204AL (DO-41) axial package format
• Bidirectional single-channel configuration

Compliance Requirements:

• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected status

The P4KE18CA-E3/54 meets all substitution criteria as a direct equivalent within the TransZorb® series, with active product status providing long-term availability assurance.

Parameter Comparison

Engineering Selection Recommendations

The P4KE18CA-E3/54 is the qualified substitute for the obsolete P4KE18C-E3/54. Both components share identical mechanical specifications, thermal operating range, and compliance certifications. The substitute maintains equivalent peak pulse power handling and exceeds the original part's peak pulse current capability by 0.8A. Both parts carry ROHS3 compliance and unlimited moisture sensitivity rating, ensuring regulatory and environmental compatibility.

The transition from the obsolete P4KE18C-E3/54 to the active P4KE18CA-E3/54 provides procurement continuity and long-term supply assurance within the same manufacturer's TransZorb® product line.

Frequently Asked Questions (FAQ)

Q: Can the P4KE18CA-E3/54 be used as a direct replacement for the P4KE18C-E3/54?

A: Yes. Both components share identical package format (DO-204AL), mounting type (through-hole), thermal range (-55°C to 175°C), and power rating (400W). The substitute meets or exceeds all electrical performance parameters of the original part.

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

A: The P4KE18CA-E3/54 features a slightly higher reverse standoff voltage (15.3V vs. 14.5V), lower maximum clamping voltage (25.2V vs. 26.5V), and higher peak pulse current capability (15.9A vs. 15.1A). The substitute maintains active product status, whereas the original is obsolete.

Q: Are there any package or pinout differences?

A: No. Both components use the DO-204AL (DO-41) axial through-hole package with identical mechanical dimensions and pin configuration.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the P4KE18C-E3/54 and P4KE18CA-E3/54 are ROHS3 compliant, REACH unaffected, and carry MSL Level 1 (Unlimited) moisture sensitivity rating.

Q: Why is the original part listed as obsolete?

A: Product obsolescence reflects manufacturer lifecycle decisions. The P4KE18CA-E3/54 provides equivalent functionality with active supply status, making it the recommended choice for new designs and ongoing procurement.