170683J250EB Equivalent & Substitute Parts

Part Overview

The 170683J250EB is a 0.068 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE), rated for 250V DC with ±5% tolerance and polypropylene dielectric material. This component is classified as obsolete, necessitating identification of functionally equivalent alternatives for applications requiring DC filtering and DC link operations. The part features low ESR characteristics and operates within the -55°C to 105°C temperature range in an axial through-hole configuration.

Substiute Parts

170683J250EB

Cornell Dubilier Electronics (CDE)In Stock: 868170683J250EB Datasheet

Current PartRFQ

WMC2D68K-F

Cornell Dubilier Electronics (CDE)In Stock: 852WMC2D68K-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution candidates for the 170683J250EB must satisfy the following critical electrical and mechanical parameters:

• Capacitance Value: 0.068 µF nominal or functionally equivalent values
• Voltage Rating (DC): Minimum 250V DC
• Mounting Configuration: Through-hole axial package
• Dielectric Type: Film capacitor technology
• Operating Temperature Range: Coverage of primary temperature extremes (-55°C minimum, 105°C maximum)
• Termination Type: PC pins for direct board mounting

The identified substitute part WMC2D68K-F does not meet the primary substitution criteria due to fundamental misalignment in capacitance value (6800 pF versus 0.068 µF) and altered dielectric material composition (polyester versus polypropylene). This part is not a functional equivalent for the specified 170683J250EB application.

Parameter Comparison

Engineering Selection Recommendations

Based on the provided parameter data, WMC2D68K-F is not an electrical equivalent for the 170683J250EB. The capacitance values differ by a factor of 10, and the dielectric materials differ (polyester versus polypropylene), resulting in distinct electrical characteristics unsuitable for direct substitution in the DC filtering and DC link applications specified for the original part.

For applications requiring replacement of the obsolete 170683J250EB, component selection must prioritize matching the specified capacitance value of 0.068 µF and maintaining polypropylene dielectric technology. The DC voltage rating of 250V and through-hole axial package are additional critical parameters for mechanical and electrical compatibility.

The WMC2D68K-F remains available with active production status and meets ROHS3 compliance requirements, providing a viable option for independent applications requiring 6800 pF capacitance at 250V DC in film dielectric technology.

Frequently Asked Questions (FAQ)

Q: Can WMC2D68K-F replace 170683J250EB in existing circuit designs?

A: No. The capacitance values differ by a factor of 10 (6800 pF versus 0.068 µF), making direct substitution electrically incompatible. Circuit function dependent on the 0.068 µF value will not be preserved.

Q: What are the primary compatibility criteria for 170683J250EB substitutes?

A: Direct substitutes must maintain: (1) 0.068 µF capacitance value, (2) 250V DC minimum rating, (3) polypropylene dielectric material, (4) through-hole axial mounting, and (5) operating temperature range encompassing -55°C to 105°C.

Q: Does the smaller physical size of WMC2D68K-F offer any advantage?

A: Physical size reduction (0.185" Dia x 0.469" L versus 0.315" Dia x 0.650" L) does not offset the fundamental electrical incompatibility. Component selection based on dimensional factors alone ignores critical capacitance and dielectric material requirements.

Q: Are there compliance differences between these parts?

A: WMC2D68K-F provides ROHS3 compliance documentation, while the obsolete 170683J250EB requires inventory verification for RoHS status. For applications with regulatory compliance requirements, the active WMC2D68K-F status supports current manufacturing standards.

Q: Can either part function in DC link or DC filtering applications?

A: The 170683J250EB is specified for DC link and DC filtering applications at 0.068 µF. The WMC2D68K-F, rated at 6800 pF, operates in a different capacitance range and would be unsuitable for these specific applications without circuit redesign.