DMM2S68K-F Equivalent & Substitute Parts Reference

Part Overview

The DMM2S68K-F is a 0.068 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 250V DC voltage rating and ±10% tolerance. This radial through-hole component utilizes polyester metallized dielectric technology and operates across a temperature range of -55°C to 125°C. The part is ROHS3 compliant and currently in active production status with 702 units in stock.

Substitute parts are identified when equivalent electrical performance can be maintained while accommodating variations in physical dimensions, packaging configurations, or enhanced specifications. Alternative models may be required due to inventory constraints, design revisions, or application-specific requirements.

Substiute Parts

DMM2S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 771DMM2S68K-F Datasheet

Current PartRFQ

160683K250C-F

Cornell Dubilier Electronics (CDE)In Stock: 836160683K250C-F Datasheet

DirectRFQ

160683J250C-F

Cornell Dubilier Electronics (CDE)In Stock: 1734160683J250C-F Datasheet

UpgradeRFQ

DME4S68K-F

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

UpgradeRFQ

DME2S68K-F

Cornell Dubilier Electronics (CDE)In Stock: 3936DME2S68K-F Datasheet

SimilarRFQ

B32521C3683J000

EPCOS - TDK ElectronicsIn Stock: 1746B32521C3683J000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DMM2S68K-F is determined by strict adherence to the following electrical and mechanical parameters:

Core Electrical Requirements (Non-Negotiable):

• Capacitance: 0.068 µF (exact match required)
• Voltage Rating - DC: 250V minimum (equal or higher acceptable)
• Dielectric Material: Polyester, Metallized (same family)
• Mounting Type: Through Hole (same interface type)
• Package / Case: Radial (same form factor)
• Lead Spacing: 0.394" (10.00mm) (same PCB footprint)

Allowable Variations:

• Tolerance: ±10% or tighter (±5% acceptable as upgrade)
• Voltage Rating - AC: 160V or higher (higher ratings acceptable)
• Operating Temperature Range: -55°C minimum to 105°C or higher (extended range acceptable)
• Physical Dimensions: Variations permitted if lead spacing remains 0.394" (10.00mm)
• Manufacturer: Different manufacturers acceptable if specifications match

Substitute Categories:

Direct Equivalents: Parts with identical electrical specifications and lead spacing, differing only in physical envelope or packaging format.

Upgraded Specifications: Parts with tighter tolerance (±5% vs ±10%) or higher voltage ratings (400V vs 250V) while maintaining all core electrical parameters.

Similar Alternatives: Parts with identical electrical specifications but different physical dimensions and lead spacing, requiring PCB layout modification.

Parameter Comparison

Engineering Selection Recommendations

Direct Substitution (No PCB Modification Required):

The following parts maintain identical lead spacing (0.394" / 10.00mm) and are electrically compatible with the DMM2S68K-F:

• 160683K250C-F (CDE): Direct equivalent with identical electrical specifications. Physical envelope is smaller (13.00mm x 4.00mm vs 14.00mm x 6.00mm). Operating temperature range is reduced to -55°C ~ 105°C. Suitable for applications where thermal performance above 105°C is not required.

• 160683J250C-F (CDE): Upgraded specification with tighter tolerance (±5% vs ±10%). Identical voltage ratings and lead spacing. Operating temperature range is -55°C ~ 105°C. Provides improved capacitance accuracy for precision applications.

• DME4S68K-F (CDE): Upgraded voltage rating (400V DC vs 250V DC, 200V AC vs 160V AC). Maintains ±10% tolerance and extended operating temperature range (-55°C ~ 125°C). Suitable for applications requiring higher voltage margin or derating considerations.

• B32521C3683J000 (EPCOS - TDK): Upgraded specification with ±5% tolerance and AEC-Q200 automotive qualification. Identical voltage ratings and lead spacing. Dielectric material is polyester PET metallized stacked configuration. Operating temperature range is -55°C ~ 125°C. Suitable for automotive and EMI/RFI suppression applications.

Conditional Substitution (PCB Layout Modification Required):

• DME2S68K-F (CDE): Identical electrical specifications and extended operating temperature range (-55°C ~ 125°C). Lead spacing differs (0.295" / 7.50mm vs 0.394" / 10.00mm), requiring PCB footprint redesign. Physical envelope is significantly smaller (10.30mm x 4.80mm). Suitable for space-constrained designs where PCB modification is feasible.

Selection Criteria:

1. Thermal Requirements: If application requires operation above 105°C, select DME4S68K-F, DME2S68K-F, or B32521C3683J000 (all support -55°C ~ 125°C).

2. Voltage Margin: If higher voltage derating is required, select DME4S68K-F (400V DC rating).

3. Tolerance Precision: If ±5% tolerance is required, select 160683J250C-F or B32521C3683J000.

4. Automotive Applications: If AEC-Q200 qualification is required, select B32521C3683J000.

5. Space Constraints: If PCB area is limited and lead spacing modification is acceptable, select DME2S68K-F.

6. Inventory Availability: DME2S68K-F has highest stock level (3874 units), followed by DME4S68K-F (1874 units).

All substitute parts are ROHS3 compliant and in active production status.

Frequently Asked Questions (FAQ)

Q1: Can 160683K250C-F replace DMM2S68K-F without PCB modification?

A: Yes. Both parts have identical lead spacing (0.394" / 10.00mm), capacitance (0.068 µF), tolerance (±10%), and voltage ratings (250V DC / 160V AC). The physical envelope is smaller, but this does not affect electrical compatibility or PCB mounting. The operating temperature range is reduced to -55°C ~ 105°C; verify this meets application requirements.

Q2: What is the difference between 160683K250C-F and 160683J250C-F?

A: Both parts are manufactured by CDE with identical capacitance, voltage ratings, and lead spacing. The primary difference is tolerance: 160683K250C-F has ±10% tolerance, while 160683J250C-F has ±5% tolerance. The upgraded tolerance provides tighter capacitance accuracy. Both have reduced operating temperature range (-55°C ~ 105°C).

Q3: When should DME4S68K-F be selected instead of DMM2S68K-F?

A: Select DME4S68K-F when the application requires higher voltage rating (400V DC vs 250V DC) or when voltage derating calculations necessitate a higher-rated component. DME4S68K-F maintains the extended operating temperature range (-55°C ~ 125°C) and ±10% tolerance. Lead spacing is identical (0.394" / 10.00mm).

Q4: Is B32521C3683J000 compatible with DMM2S68K-F?

A: Yes, with the following considerations: B32521C3683J000 is manufactured by EPCOS - TDK with identical capacitance, voltage ratings, and lead spacing. It offers upgraded ±5% tolerance and AEC-Q200 automotive qualification. The dielectric material is polyester PET metallized stacked configuration (vs standard polyester metallized). Operating temperature range is -55°C ~ 125°C. Electrical performance is equivalent; physical height is lower (7.00mm vs 10.00mm).

Q5: Can DME2S68K-F be used as a direct replacement?

A: DME2S68K-F is electrically equivalent with identical capacitance, tolerance, and voltage ratings. However, lead spacing differs (0.295" / 7.50mm vs 0.394" / 10.00mm), requiring PCB footprint modification. Physical envelope is significantly smaller. This part is suitable only when PCB redesign is feasible. It offers the advantage of extended operating temperature range (-55°C ~ 125°C) and highest inventory availability (3874 units).

Q6: What parameters must remain identical for substitution without PCB modification?

A: Lead spacing (0.394" / 10.00mm) and termination type (PC Pins) must remain identical. Capacitance (0.068 µF), dielectric material (polyester metallized), mounting type (through hole), and package type (radial) must match. Voltage ratings may be equal or higher. Tolerance may be equal or tighter. Operating temperature range may be equal or extended.

Q7: Are all substitute parts ROHS3 compliant?

A: Yes. All listed substitute parts (160683K250C-F, 160683J250C-F, DME4S68K-F, DME2S68K-F, and B32521C3683J000) are ROHS3 compliant and meet REACH requirements.

Q8: Which substitute part has the best inventory availability?

A: DME2S68K-F has the highest inventory level with 3874 units in stock, followed by DME4S68K-F with 1874 units. However, DME2S68K-F requires PCB modification due to different lead spacing.

Q9: What is the difference between CDE and EPCOS - TDK manufacturing?

A: Both manufacturers produce equivalent 0.068 µF film capacitors with identical electrical specifications. B32521C3683J000 (EPCOS - TDK) includes AEC-Q200 automotive qualification and uses polyester PET metallized stacked dielectric technology. CDE parts use standard polyester metallized construction. Selection depends on application requirements and qualification standards.

Q10: Can operating temperature range be reduced when substituting?

A: No. Operating temperature range must remain equal to or extended from the original specification. DMM2S68K-F operates -55°C ~ 125°C. Substitutes with reduced range (-55°C ~ 105°C) are acceptable only if the application does not require operation above 105°C. Verify thermal requirements before selection.