DMM4S68K-F Film Capacitor Equivalent and Substitute Parts

Part Overview

The DMM4S68K-F is a 0.068 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400VDC rated voltage. This polyester metallized radial capacitor is currently active in product status and widely used in general purpose applications. Component substitution becomes necessary when addressing specific application requirements such as higher voltage ratings, different physical dimensions, or alternative series options while maintaining functional equivalence.

Substiute Parts

DMM4S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 919DMM4S68K-F Datasheet

Current PartRFQ

DME6S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 2484DME6S68K-F Datasheet

DirectRFQ

DME4S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1919DME4S68K-F Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DMM4S68K-F are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Capacitance value: 0.068 µF (fixed requirement)
• Tolerance: ±10% (fixed requirement)
• Dielectric material: Polyester, Metallized (fixed requirement)
• Mounting type: Through Hole (fixed requirement)
• Package: Radial (fixed requirement)
• Termination: PC Pins (fixed requirement)

Variable Parameters Allowing Substitution:

• Voltage rating (DC): May be equal to or exceed 400V
• Voltage rating (AC): May be equal to or exceed 200V
• Physical dimensions: May vary within component size constraints
• Lead spacing: May vary per mechanical fit requirements
• Series designation: Alternative CDE series within electrical parameters

The substitute parts listed (DME6S68K-F and DME4S68K-F) maintain identical capacitance, tolerance, dielectric material, and termination specifications while offering different voltage ratings and physical geometries suitable for various circuit application requirements.

Parameter Comparison

Engineering Selection Recommendations

All three capacitors (DMM4S68K-F, DME6S68K-F, and DME4S68K-F) maintain active product status with Cornell Dubilier Electronics and are ROHS3 compliant. The selection between these parts depends on specific circuit requirements:

DMM4S68K-F is suitable for applications requiring 400VDC rating with standard lead spacing of 15.00mm.

DME6S68K-F provides elevated voltage capability at 630VDC with AC rating of 250V, maintaining identical lead spacing and height to the main part. This substitute enables circuit designs requiring higher voltage margins or operation in higher voltage environments.

DME4S68K-F provides equivalent 400VDC rating with reduced physical dimensions (12.50mm length, 10.00mm lead spacing), suitable for space-constrained circuit layouts while maintaining electrical specifications and compliance certifications.

All substitutes share identical capacitance, tolerance, dielectric composition, termination style, and operating temperature range.

Frequently Asked Questions (FAQ)

Q: Can DME6S68K-F replace DMM4S68K-F in any application?

A: DME6S68K-F maintains the same capacitance, tolerance, dielectric material, termination, and operating temperature range. The primary difference is elevated voltage rating (630VDC versus 400VDC). This part functions in applications rated for 400VDC and below. PCB footprint dimensions differ slightly (18.50mm versus 18.00mm length), requiring verification of available board space.

Q: What is the primary reason to select DME4S68K-F over DMM4S68K-F?

A: DME4S68K-F provides identical electrical specifications (0.068 µF capacitance, ±10% tolerance, 400VDC rating, -55°C to 125°C operating range) with smaller physical dimensions and reduced lead spacing (10.00mm versus 15.00mm). Selection depends on PCB layout constraints and available drilling spacing in the circuit board design.

Q: Are all three parts PCB mount compatible?

A: All three parts use radial package with PC pins through-hole termination. Lead spacing differs: DMM4S68K-F and DME6S68K-F use 15.00mm spacing, while DME4S68K-F uses 10.00mm spacing. PCB drilling pattern must accommodate the selected part's lead spacing.

Q: What compliance certifications apply to all substitute parts?

A: All three capacitors are ROHS3 compliant and REACH unaffected, meeting environmental and regulatory requirements for industrial and consumer electronics applications.

Q: Can these capacitors be used in high-temperature applications?

A: All three parts maintain identical operating temperature range of -55°C to 125°C. This range applies equally across DMM4S68K-F, DME6S68K-F, and DME4S68K-F for design purposes.