DME4P82K Film Capacitor Equivalent & Substitute Parts

Part Overview

The DME4P82K is a 0.82 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating and ±10% tolerance. This component is classified as obsolete, which necessitates identification of equivalent substitute parts for ongoing procurement and system maintenance. The part features polyester metallized dielectric construction in a radial through-hole package suitable for general-purpose applications.

Substiute Parts

DME4P82K

Cornell Dubilier Electronics (CDE)In Stock: 1174DME4P82K Datasheet

Current PartRFQ

DME4P82K-F

Cornell Dubilier Electronics (CDE)In Stock: 1126DME4P82K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DME4P82K is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical specifications in the following categories:

Electrical Parameters: Capacitance value (0.82 µF), tolerance (±10%), DC voltage rating (400V), AC voltage rating (200V), and dielectric material composition (polyester, metallized).

Mechanical Parameters: Mounting type (through hole), package configuration (radial), physical dimensions (26.00mm × 8.00mm), seated height (17.50mm maximum), lead spacing (22.50mm), and termination style (PC pins).

Environmental Parameters: Operating temperature range (-55°C to 125°C).

The DME4P82K-F qualifies as a direct substitute based on complete alignment with all specified parameters. The primary distinction between the main part and its substitute is product status and compliance certification.

Parameter Comparison

Engineering Selection Recommendations

The DME4P82K-F serves as the direct equivalent substitute for the obsolete DME4P82K. Both components are manufactured by Cornell Dubilier Electronics within the DME series and maintain identical electrical and mechanical specifications across all critical parameters.

Product Status Consideration: The DME4P82K is classified as obsolete, while the DME4P82K-F maintains active product status. This distinction is significant for long-term procurement planning and supply chain continuity.

Compliance Difference: The DME4P82K is RoHS non-compliant, whereas the DME4P82K-F is ROHS3 compliant. This compliance upgrade in the substitute part may be relevant for applications subject to RoHS regulations or customer requirements. Both parts maintain REACH Unaffected status and EAR99 export classification.

Functional Equivalence: Complete parameter alignment ensures direct substitution without circuit redesign or board layout modification. The identical physical dimensions, lead spacing, and termination configuration enable direct pin-for-pin replacement in existing through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the DME4P82K-F be used as a direct replacement for the DME4P82K?

A: Yes. The DME4P82K-F is electrically and mechanically identical to the DME4P82K across all specified parameters, including capacitance, voltage ratings, dielectric material, operating temperature range, physical dimensions, and lead configuration. Direct substitution is supported without circuit modification.

Q: What is the primary reason to transition from DME4P82K to DME4P82K-F?

A: The DME4P82K is classified as obsolete, creating supply chain risk. The DME4P82K-F is an active product from the same manufacturer and series, ensuring ongoing availability. Additionally, the DME4P82K-F achieves ROHS3 compliance, whereas the original part is RoHS non-compliant.

Q: Are the physical dimensions and lead spacing identical between these parts?

A: Yes. Both the DME4P82K and DME4P82K-F share identical physical dimensions (26.00mm length × 8.00mm width), maximum seated height (17.50mm), and lead spacing (22.50mm). No PCB layout modifications are required for substitution.

Q: Does the RoHS compliance difference affect electrical performance?

A: No. RoHS compliance status reflects manufacturing process and material composition standards but does not alter the electrical characteristics or performance of the capacitor. Both parts deliver identical capacitance, voltage rating, tolerance, and temperature performance.

Q: What packaging difference exists between the main part and substitute?

A: The DME4P82K is supplied in standard packaging, while the DME4P82K-F is supplied in bulk packaging. This distinction affects procurement and handling but does not impact component functionality or electrical specifications.

Q: Are both parts suitable for the same operating temperature range?

A: Yes. Both the DME4P82K and DME4P82K-F operate across the identical temperature range of -55°C to 125°C, ensuring equivalent thermal performance in all application environments.