Equivalent & Substitute Parts Reference: 170683K250EB

Part Overview

The Cornell Dubilier Electronics (CDE) 170683K250EB is a 0.068 µF film capacitor rated for 250V DC operation with polypropylene metallized dielectric construction. This axial through-hole component is designed for DC link and DC filtering applications, featuring low ESR characteristics and an operating temperature range of -55°C to 105°C.

The 170683K250EB carries an obsolete product status. Identifying equivalent and substitute components is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this capacitor specification.

Substiute Parts

170683K250EB

Cornell Dubilier Electronics (CDE)In Stock: 693170683K250EB Datasheet

Current PartRFQ

WMC2D68K-F

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

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution analysis for the 170683K250EB is constrained by the following critical parameters:

Matching Parameters:

• Voltage Rating - DC: 250V (required match)
• Mounting Type: Through Hole (required match)
• Package / Case: Axial (required match)
• Termination: PC Pins (required match)

Allowable Variations:

• Capacitance: Substitutes must fall within the tolerance band and application requirements
• Dielectric Material: Alternative dielectric materials (polyester, polypropylene) are permissible if electrical performance is maintained
• Operating Temperature Range: Substitutes with equal or extended temperature ranges are acceptable
• RoHS/REACH Compliance: Active product status with verified compliance is preferred for new designs

The substitute part WMC2D68K-F from Cornell Dubilier Electronics does not meet the critical capacitance requirement (6800 pF versus 0.068 µF) and therefore cannot function as a direct equivalent for this application. This part is listed as a reference only and is not suitable for substitution in circuits designed for the 170683K250EB specification.

Parameter Comparison

Engineering Selection Recommendations

The 170683K250EB is classified as an obsolete product. For applications currently utilizing this component, the following selection criteria apply:

For Direct Replacement: No direct equivalent substitute meeting all electrical and mechanical parameters has been identified from the provided reference data. The WMC2D68K-F does not satisfy the capacitance requirement and therefore cannot serve as a functional replacement.

For New Design Implementation: When the 170683K250EB is no longer available, design engineers must conduct a comprehensive circuit analysis to identify alternative capacitor specifications that satisfy the DC link and DC filtering application requirements. This analysis must account for:

• Required capacitance value and tolerance
• Voltage stress conditions (DC and AC components)
• Thermal operating environment
• Physical space constraints for through-hole axial components
• Regulatory compliance requirements (RoHS, REACH)

Compliance Considerations: The WMC2D68K-F carries ROHS3 compliance certification, whereas the 170683K250EB status requires inventory verification. For new production or repair applications subject to regulatory compliance mandates, active product status with verified certifications is preferred.

Frequently Asked Questions (FAQ)

Q: Can the WMC2D68K-F replace the 170683K250EB in my circuit?

A: No. The WMC2D68K-F has a capacitance of 6800 pF, which is approximately 10 times lower than the 0.068 µF requirement of the 170683K250EB. This capacitance difference makes the WMC2D68K-F unsuitable for DC link and DC filtering applications designed for the original specification.

Q: What parameters must match exactly when substituting this capacitor?

A: The following parameters must match exactly: voltage rating (250V DC minimum), mounting type (through hole), package configuration (axial), and termination style (PC pins). Capacitance value is application-critical and cannot be altered without circuit redesign.

Q: Is the 170683K250EB still available for purchase?

A: The 170683K250EB carries an obsolete product status. Current inventory availability is 643 pieces. For long-term supply assurance, alternative components meeting the application requirements should be identified and qualified.

Q: What is the physical size difference between these parts?

A: The 170683K250EB measures 0.315" diameter by 0.650" length (8.00mm x 16.50mm). The WMC2D68K-F measures 0.185" diameter by 0.469" length (4.70mm x 11.90mm). Physical dimensions differ significantly and may affect PCB layout compatibility.

Q: Are there RoHS compliance differences between these parts?

A: Yes. The WMC2D68K-F is ROHS3 compliant. The 170683K250EB RoHS status requires inventory verification. For applications subject to RoHS regulations, compliance certification must be confirmed before component selection.

Q: What dielectric materials are used in these capacitors?

A: The 170683K250EB uses polypropylene (PP) metallized dielectric. The WMC2D68K-F uses polyester dielectric. These materials have different electrical and thermal characteristics and are not interchangeable for equivalent performance.