Equivalent & Substitute Parts for DME2S12K Film Capacitor

Part Overview

The DME2S12K is a 0.012 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 250V DC voltage rating and polyester metallized dielectric construction. This component is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing system support and new designs. The radial through-hole configuration and general-purpose application profile make this capacitor suitable for replacement with active-status equivalents that maintain electrical and mechanical compatibility.

Substiute Parts

DME2S12K

Cornell Dubilier Electronics (CDE)In Stock: 909DME2S12K Datasheet

Current PartRFQ

DME2S12K-F

Cornell Dubilier Electronics (CDE)In Stock: 1021DME2S12K-F Datasheet

DirectRFQ

DME4S12K-F

Cornell Dubilier Electronics (CDE)In Stock: 967DME4S12K-F Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DME2S12K are grouped based on strict electrical and mechanical parameter alignment. The substitution logic follows these criteria:

Primary Substitution Criteria:

• Capacitance value: 0.012 µF (exact match required)
• Tolerance: ±10% (exact match required)
• Dielectric type: Polyester, Metallized (exact match required)
• Mounting configuration: Through Hole Radial (exact match required)
• Lead spacing: 0.295" / 7.50mm (exact match required)
• Termination type: PC Pins (exact match required)

Voltage Rating Substitution Logic:

• Substitute parts must maintain equal or higher DC voltage rating
• Substitute parts must maintain equal or higher AC voltage rating
• Higher voltage ratings are acceptable and do not compromise circuit function

Product Status Consideration:

• The main part (DME2S12K) is obsolete; active-status substitutes ensure long-term availability
• All identified substitutes maintain active product status

Parameter Comparison

Engineering Selection Recommendations

DME2S12K-F Selection Criteria: The DME2S12K-F is a direct functional equivalent to the obsolete DME2S12K. This substitute maintains identical electrical specifications (0.012 µF, ±10% tolerance, 250V DC, 160V AC) and mechanical configuration (radial through-hole, 7.50mm lead spacing). The primary distinction is product status: DME2S12K-F is active and ROHS3 compliant, addressing regulatory and availability concerns associated with the obsolete main part. Physical dimensions are identical, ensuring drop-in compatibility in existing PCB designs. This substitute is appropriate for direct replacement in applications where the original 250V DC rating is specified.

DME4S12K-F Selection Criteria: The DME4S12K-F provides equivalent capacitance and tolerance with elevated voltage ratings (400V DC, 200V AC). This substitute is suitable for applications where the circuit design permits higher voltage-rated components or where future design margin is required. The mechanical configuration remains compatible (radial through-hole, 7.50mm lead spacing, identical height). Physical width is marginally reduced (0.173" versus 0.177"), which does not affect PCB hole pattern compatibility. This substitute is appropriate when voltage headroom is beneficial and the application circuit does not restrict component voltage ratings.

Compliance Consideration: Both substitutes are ROHS3 compliant, addressing environmental and regulatory requirements that may not apply to the obsolete RoHS non-compliant main part. Selection between substitutes should prioritize voltage rating alignment with circuit specifications and availability requirements.

Frequently Asked Questions (FAQ)

Q: Can DME2S12K-F be used as a direct replacement for DME2S12K? A: Yes. The DME2S12K-F maintains identical electrical specifications (0.012 µF, ±10%, 250V DC, 160V AC) and mechanical configuration (radial through-hole, 7.50mm lead spacing). Physical dimensions are identical, enabling drop-in PCB compatibility.

Q: What is the primary difference between DME2S12K-F and the obsolete DME2S12K? A: The DME2S12K-F is active-status and ROHS3 compliant, whereas the main part is obsolete and RoHS non-compliant. Electrical and mechanical specifications are identical.

Q: Can DME4S12K-F replace DME2S12K in all applications? A: DME4S12K-F is electrically compatible for applications where the circuit design permits higher voltage ratings (400V DC, 200V AC). The capacitance, tolerance, dielectric type, and mechanical configuration are identical. Verify that the circuit design does not restrict component voltage ratings before substitution.

Q: Are there physical dimension differences between the substitutes? A: DME2S12K-F maintains identical dimensions to the main part (0.406" L x 0.177" W, 7.50mm height). DME4S12K-F has a marginally reduced width (0.173" versus 0.177"), which does not affect PCB hole pattern compatibility or lead spacing (both 7.50mm).

Q: Do the substitutes maintain the same lead spacing for PCB compatibility? A: Yes. Both DME2S12K-F and DME4S12K-F maintain 0.295" (7.50mm) lead spacing, ensuring compatibility with PCB hole patterns designed for the original DME2S12K.

Q: What is the significance of ROHS3 compliance on the substitute parts? A: ROHS3 compliance indicates conformance to current environmental and regulatory standards. This is relevant for applications subject to RoHS directives or customer specifications requiring compliant components. The obsolete main part is RoHS non-compliant.

Q: Are the substitutes available in equivalent quantities? A: Both substitutes are active-status with confirmed inventory: DME2S12K-F (985 Pcs) and DME4S12K-F (905 Pcs). Availability exceeds the main part inventory (852 Pcs).