DME2S56K Film Capacitor Equivalent & Substitute Parts

Part Overview

The DME2S56K is a 0.056 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), designed for general-purpose applications requiring polyester dielectric construction with metallized electrodes. This component operates across a temperature range of -55°C to 125°C and is rated for 250V DC / 160V AC operation.

The DME2S56K carries an obsolete product status, making identification of compatible substitutes essential for ongoing system maintenance, repair, and component procurement. Active equivalent models within the same series provide functional continuity while offering improved compliance certifications and expanded inventory availability.

Substiute Parts

DME2S56K

Cornell Dubilier Electronics (CDE)In Stock: 845DME2S56K Datasheet

Current PartRFQ

DME2S56K-F

Cornell Dubilier Electronics (CDE)In Stock: 1099DME2S56K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DME2S56K is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance value: 0.056 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Voltage rating: 250V DC minimum / 160V AC minimum
• Dielectric material: Polyester, Metallized (exact match required)

Mechanical Parameters:

• Mounting type: Through Hole (exact match required)
• Package configuration: Radial (exact match required)
• Lead spacing: 0.295 inches / 7.50 mm (exact match required)
• Physical dimensions: 0.406" L × 0.189" W / 10.30 × 4.80 mm (exact match required)
• Termination: PC Pins (exact match required)

Environmental Parameters:

• Operating temperature range: -55°C to 125°C (exact match required)

Substitute parts must satisfy all listed criteria to ensure direct functional and mechanical compatibility without circuit modification or board rework.

Parameter Comparison

Engineering Selection Recommendations

The DME2S56K-F serves as the direct functional equivalent to the obsolete DME2S56K. Both components share identical electrical specifications, mechanical dimensions, and environmental operating parameters, enabling direct substitution without circuit modification.

Primary Selection Basis:

The DME2S56K-F is recommended for new procurement and system replacement applications based on the following factors:

1. Product Status: The DME2S56K-F maintains active product status with Cornell Dubilier Electronics, ensuring continued availability and manufacturing support. The original DME2S56K is classified as obsolete, limiting future procurement options.

2. Regulatory Compliance: The DME2S56K-F achieves ROHS3 compliance, meeting current environmental and hazardous substance restrictions. The original part carries RoHS non-compliant status, which may present procurement restrictions in regulated markets and applications.

3. Inventory Availability: The DME2S56K-F is available in bulk packaging with 1003 pieces in stock, compared to 743 pieces of the obsolete variant. This expanded inventory supports both immediate and planned procurement requirements.

4. Electrical and Mechanical Equivalence: All critical parameters—capacitance, voltage rating, dielectric material, mounting configuration, physical dimensions, and lead spacing—are identical between both parts, confirming direct compatibility.

For applications requiring the original DME2S56K, the DME2S56K-F provides complete functional replacement without design changes, board rework, or performance degradation.

Frequently Asked Questions (FAQ)

Q: Can the DME2S56K-F be used as a direct replacement for the DME2S56K in existing designs?

A: Yes. The DME2S56K-F is electrically and mechanically identical to the DME2S56K. All critical parameters—capacitance (0.056 µF), voltage rating (250V DC / 160V AC), dielectric material (polyester, metallized), physical dimensions, lead spacing, and operating temperature range—are identical. Direct substitution requires no circuit modification or board rework.

Q: What is the difference between the DME2S56K and DME2S56K-F?

A: The primary differences are product status and regulatory compliance. The DME2S56K is obsolete and RoHS non-compliant, while the DME2S56K-F is an active product with ROHS3 compliance. Functionally and mechanically, both parts are equivalent.

Q: Why is the DME2S56K classified as obsolete?

A: The DME2S56K has been discontinued by Cornell Dubilier Electronics. The DME2S56K-F represents the current active equivalent within the same product series.

Q: Are there packaging differences between these parts?

A: The DME2S56K is supplied in standard packaging, while the DME2S56K-F is available in bulk packaging. Both use identical radial through-hole configurations with PC pin termination and identical lead spacing (0.295 inches / 7.50 mm).

Q: What is the lead spacing for these capacitors?

A: The lead spacing is 0.295 inches (7.50 mm) for both the DME2S56K and DME2S56K-F. This dimension is critical for PCB footprint compatibility and must match the design specifications exactly.

Q: Can these capacitors operate at temperatures below -55°C or above 125°C?

A: No. Both the DME2S56K and DME2S56K-F are rated for operation within the -55°C to 125°C temperature range. Operation outside this range is not supported and may result in component failure or performance degradation.

Q: What is the tolerance specification for these capacitors?

A: Both parts carry a ±10% capacitance tolerance. This tolerance applies to the nominal 0.056 µF value and must be considered in circuit design calculations.

Q: Are these capacitors suitable for AC applications?

A: Yes. Both the DME2S56K and DME2S56K-F are rated for 160V AC operation. The 250V DC rating provides additional margin for AC applications within this voltage specification.