DME10S12K-F Equivalent & Substitute Parts

Part Overview

The DME10S12K-F is a 0.012 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the DME series. This radial through-hole component features a polyester metallized dielectric with a 1000V DC voltage rating and ±10% capacitance tolerance. The part is Active in product status with 931 pieces currently in stock. Film capacitors of this specification are used in general-purpose applications requiring stable capacitance performance across temperature ranges from -55°C to 125°C. Equivalent and substitute parts are identified to provide alternative sourcing options when the primary part is unavailable or when design requirements permit the use of components with enhanced electrical characteristics.

Substiute Parts

DME10S12K-F

Cornell Dubilier Electronics (CDE)In Stock: 1040DME10S12K-F Datasheet

Current PartRFQ

BFC238330123

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 1638BFC238330123 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DME10S12K-F are identified based on the following critical parameters:

Mandatory Matching Criteria:

• Capacitance value of 0.012 µF (exact match required)
• DC voltage rating of 1000V or higher
• Through-hole radial mounting configuration
• RoHS3 compliance status

Allowable Variations:

• Dielectric material may differ (polyester to polypropylene) provided electrical performance remains suitable for the application
• Tolerance may be tighter (±5% acceptable where ±10% is specified)
• AC voltage rating may exceed the minimum requirement
• Operating temperature range may be narrower if it encompasses the application environment
• Physical dimensions may vary within PCB layout constraints

The substitute part BFC238330123 from Vishay Beyschlag/Draloric/BC Components meets these criteria with equivalent capacitance, matching DC voltage rating, superior tolerance specification, and compatible through-hole radial packaging.

Parameter Comparison

Engineering Selection Recommendations

Primary Part Selection (DME10S12K-F): The DME10S12K-F remains the preferred choice when the original specification is required. This part is Active in product status with established supply (931 pieces in stock), ROHS3 compliant, and REACH unaffected. The polyester dielectric and ±10% tolerance are suitable for general-purpose applications. The operating temperature range of -55°C to 125°C accommodates standard industrial and commercial environments.

Substitute Part Selection (BFC238330123): The BFC238330123 is a valid substitute when the following conditions are met:

1. The application environment does not exceed 105°C, as the substitute's maximum operating temperature is 5°C lower than the primary part.
2. PCB layout can accommodate the different lead spacing (15.00mm versus 12.50mm) and slightly larger length dimension (17.50mm versus 15.50mm).
3. The polypropylene dielectric material is acceptable for the application. Polypropylene film capacitors exhibit different frequency response and ESR characteristics compared to polyester types.
4. The tighter tolerance specification (±5% versus ±10%) is either required or acceptable for the circuit design.

Both parts are Active in product status, ROHS3 compliant, and REACH unaffected, meeting current regulatory requirements. The substitute part offers higher AC voltage rating (350V versus 250V) and lower profile height (11.00mm versus 12.00mm), which may provide advantages in specific applications.

Frequently Asked Questions (FAQ)

Q: Can the BFC238330123 be used as a direct replacement for the DME10S12K-F?

A: The BFC238330123 is electrically compatible for applications where the operating temperature does not exceed 105°C and the PCB layout accommodates the different lead spacing (15.00mm versus 12.50mm). The capacitance value and DC voltage rating are identical. However, the different dielectric material (polypropylene versus polyester) and lead spacing require verification that the PCB footprint and circuit performance are acceptable.

Q: What is the difference between polyester and polypropylene dielectric materials?

A: Polyester and polypropylene are both common film dielectric materials for capacitors. The choice between them depends on application requirements including frequency response, ESR characteristics, and temperature stability. Both materials are suitable for general-purpose and high-pulse applications. The specific dielectric material is determined by the original design specification.

Q: Does the tighter tolerance of the BFC238330123 (±5% versus ±10%) affect compatibility?

A: A tighter tolerance specification is always compatible with designs that accept the original ±10% tolerance. The ±5% tolerance of the substitute part provides improved capacitance accuracy, which may be beneficial in precision circuits. No design modification is required to use a part with tighter tolerance.

Q: Are there any lead spacing considerations when substituting the BFC238330123?

A: Yes. The DME10S12K-F has a lead spacing of 12.50mm, while the BFC238330123 has a lead spacing of 15.00mm. The PCB footprint must be verified to accommodate this 2.50mm difference. The substitute part is also slightly longer (17.50mm versus 15.50mm) and lower in profile (11.00mm versus 12.00mm). PCB layout review is required before substitution.

Q: What is the significance of the different AC voltage ratings (250V versus 350V)?

A: The AC voltage rating indicates the maximum AC voltage the capacitor can withstand. The substitute part's higher AC rating (350V versus 250V) provides additional margin and is fully compatible with applications designed for the lower rating. This represents an enhancement rather than a limitation.

Q: Are both parts compliant with current regulatory standards?

A: Yes. Both the DME10S12K-F and BFC238330123 are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components in most jurisdictions.

Q: What should be verified before implementing the BFC238330123 as a substitute?

A: Verification should include: (1) confirmation that the application environment does not exceed 105°C maximum operating temperature; (2) PCB layout review to confirm the 15.00mm lead spacing and 17.50mm length are compatible with the existing footprint; (3) circuit performance validation with the polypropylene dielectric material; (4) confirmation that the tighter ±5% tolerance is acceptable or beneficial for the design.