PVC12218 Film Capacitor Equivalent & Substitute Parts

Part Overview

The PVC12218 is a 1800 pF polypropylene film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 1.2 kV DC operation with ±10% capacitance tolerance. This radial through-hole component is designed for general-purpose applications requiring reliable film capacitor performance across industrial temperature ranges.

The PVC12218 is classified as obsolete. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this component.

Substiute Parts

PVC12218

Cornell Dubilier Electronics (CDE)In Stock: 946PVC12218 Datasheet

Current PartRFQ

ECW-H12182JV

Panasonic Electronic ComponentsIn Stock: 1384ECW-H12182JV Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PVC12218 is determined by the following critical parameters:

Primary Matching Criteria:

• Capacitance value: 1800 pF (exact match required)
• Dielectric material: Polypropylene (PP)
• Mounting type: Through Hole
• Package configuration: Radial
• Termination style: PC Pins

Voltage Compatibility: Substitute parts must maintain a DC voltage rating equal to or greater than 1200V to ensure safe operation within the original design specifications.

Tolerance Consideration: The original part specifies ±10% tolerance. Substitute parts with tighter tolerance (such as ±5%) are functionally compatible and provide improved performance margin.

Temperature Range: Operating temperature range of substitute parts must encompass or exceed the -55°C to +105°C specification of the original component.

Compliance Requirements: All substitute parts must maintain ROHS3 compliance and REACH unaffected status to satisfy regulatory and environmental standards.

Parameter Comparison

Engineering Selection Recommendations

ECW-H12182JV (Panasonic Electronic Components) - Active Status

The ECW-H12182JV is the qualified substitute for the obsolete PVC12218. This part maintains all critical electrical parameters required for direct substitution:

• Identical 1800 pF capacitance value
• DC voltage rating of 1250V exceeds the original 1200V requirement
• Polypropylene dielectric material with metallized construction provides enhanced performance characteristics
• Tighter ±5% tolerance improves circuit performance margin compared to the original ±10% specification
• Through-hole radial configuration with PC pin termination ensures mechanical and electrical compatibility with existing PCB layouts

The ECW-H12182JV is currently in active production status with confirmed inventory availability (1308 pcs), ensuring reliable supply for ongoing requirements. Both components maintain ROHS3 compliance and REACH unaffected status, satisfying regulatory requirements.

The operating temperature range of the substitute (-40°C to +105°C) covers the upper specification of the original part. Applications requiring operation below -40°C require design review.

Frequently Asked Questions (FAQ)

Q: Can the ECW-H12182JV directly replace the PVC12218 in existing designs?

A: Yes. The ECW-H12182JV provides direct electrical and mechanical compatibility. Identical capacitance, matching dielectric material, equivalent mounting configuration, and higher voltage rating ensure functional equivalence. PCB layout modifications are not required.

Q: What is the significance of the metallized polypropylene construction in the ECW-H12182JV?

A: Metallized polypropylene provides self-healing characteristics and improved frequency response compared to standard polypropylene film. This enhancement does not compromise compatibility and provides performance benefits for the application.

Q: Does the lower AC voltage rating (354V vs 475V) of the ECW-H12182JV affect substitution suitability?

A: The AC voltage rating difference reflects different measurement standards between manufacturers. The DC voltage rating of 1250V is the primary specification for this application category and exceeds the original requirement. AC voltage rating compatibility depends on specific circuit application requirements and should be evaluated against actual AC stress conditions.

Q: Why is the operating temperature range of the substitute limited to -40°C minimum instead of -55°C?

A: The ECW-H12182JV is specified for -40°C to +105°C operation. Applications requiring -55°C operation must confirm that the substitute part meets this extended low-temperature requirement through design validation or alternative component selection.

Q: Are there any PCB layout considerations when substituting the ECW-H12182JV for the PVC12218?

A: Physical dimensions differ between the two parts. The PVC12218 measures 0.421" diameter × 1.252" length with 0.969" lead spacing. The ECW-H12182JV measures 0.709" length × 0.276" width with 0.610" height and 0.591" lead spacing. Verify that the substitute component fits within the available PCB footprint and clearance envelope before implementation.

Q: What compliance certifications apply to both components?

A: Both the PVC12218 and ECW-H12182JV maintain ROHS3 compliance and REACH unaffected status. No additional compliance modifications are required for substitution.