ECQ-P4183JU Film Capacitor Equivalent & Substitute Parts

Part Overview

The ECQ-P4183JU is a 0.018 µF film capacitor manufactured by Panasonic Electronic Components, rated for 400V DC operation with polypropylene dielectric material. This radial through-hole component is designed for high-frequency switching applications and high pulse DV/DT environments. The product is classified as obsolete, making identification of functionally equivalent substitute parts essential for ongoing system maintenance, repair, and redesign efforts.

Substiute Parts

ECQ-P4183JU

Panasonic Electronic ComponentsIn Stock: 806ECQ-P4183JU Datasheet

Current PartRFQ

160183J400C-F

Cornell Dubilier Electronics (CDE)In Stock: 907160183J400C-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECQ-P4183JU is determined by strict equivalence across the following critical parameters:

• Capacitance value: 0.018 µF (exact match required)
• Tolerance: ±5% (matching tolerance band)
• Voltage rating: 400V DC minimum
• Mounting configuration: Through-hole radial
• Termination style: PC pins
• Operating temperature range: Must encompass or exceed -40°C to 105°C
• Moisture sensitivity: MSL 1 or better

The substitute part 160183J400C-F from Cornell Dubilier Electronics meets these core electrical and mechanical requirements. While the dielectric material differs (polyester metallized versus polypropylene), both materials satisfy the specified voltage, capacitance, and temperature parameters for this application category.

Parameter Comparison

Engineering Selection Recommendations

The 160183J400C-F from Cornell Dubilier Electronics is electrically equivalent to the ECQ-P4183JU for applications requiring 0.018 µF capacitance at 400V DC with ±5% tolerance. The substitute part offers the advantage of active product status and ROHS3 compliance, supporting long-term supply chain continuity.

Physical dimensions differ between the two parts. The Cornell Dubilier component is smaller in all dimensions and features reduced lead spacing (0.394" versus 0.591"). PCB layout modifications may be required to accommodate the substitute part. The operating temperature range of the substitute part extends to -55°C, providing enhanced low-temperature performance compared to the original -40°C minimum.

Dielectric material composition differs: the original uses polypropylene while the substitute uses polyester with metallization. Both materials are suitable for the specified voltage and frequency characteristics of this application category.

Frequently Asked Questions (FAQ)

Q: Can the 160183J400C-F be used as a direct replacement for the ECQ-P4183JU?

A: Electrical substitution is valid based on matching capacitance (0.018 µF), tolerance (±5%), and voltage rating (400V DC). Physical dimensions and lead spacing differ, requiring PCB layout verification before installation.

Q: What is the significance of the different dielectric materials?

A: Polypropylene and polyester metallized films both meet the specified electrical parameters for this application. Material selection affects frequency response characteristics and ESR behavior, but both are suitable for the stated high-frequency switching and high pulse DV/DT applications.

Q: Does the smaller physical size of the substitute part affect performance?

A: Physical size does not affect electrical performance for this application. The smaller dimensions of the 160183J400C-F may provide PCB space advantages, but lead spacing differences (15.00mm versus 10.00mm) require layout modification.

Q: Is the extended temperature range of the substitute part beneficial?

A: The substitute part operates from -55°C to 105°C, compared to the original -40°C to 105°C range. This provides additional margin for low-temperature operation if required by system specifications.

Q: What compliance advantages does the substitute part offer?

A: The 160183J400C-F is ROHS3 compliant and carries active product status, ensuring ongoing availability and regulatory alignment with current environmental standards.

Q: Are there any lead spacing considerations for PCB redesign?

A: Yes. The original part uses 15.00mm lead spacing while the substitute uses 10.00mm spacing. PCB footprint modification is necessary for mechanical fit and electrical connection.