DMM1P68K-F Equivalent & Substitute Parts Reference

Part Overview

The DMM1P68K-F is a 0.68 µF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 100V DC voltage rating and ±10% tolerance. This radial through-hole component utilizes polyester metallized dielectric technology and operates across the temperature range of -55°C to 125°C. The part is Active in product status and ROHS3 Compliant. Equivalent and substitute parts are identified when circuit requirements permit higher voltage ratings, improved tolerance specifications, or alternative packaging configurations while maintaining the same capacitance value and core electrical characteristics.

Substiute Parts

DMM1P68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1110DMM1P68K-F Datasheet

Current PartRFQ

DME2P68K-F

Cornell Dubilier Electronics (CDE)In Stock: 1608DME2P68K-F Datasheet

UpgradeRFQ

DME1P68K-F

Cornell Dubilier Electronics (CDE)In Stock: 716DME1P68K-F Datasheet

SimilarRFQ

B32522C3684J000

EPCOS - TDK ElectronicsIn Stock: 2244B32522C3684J000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution logic for the DMM1P68K-F is based on the following criteria:

Upgrade Substitutes (Higher Voltage Rating): Parts with identical capacitance (0.68 µF), equal or tighter tolerance, higher DC voltage rating (250V), and compatible through-hole radial packaging. These substitutes provide enhanced voltage margin and are electrically backward-compatible in circuits designed for 100V operation.

Similar Substitutes (Same Voltage Rating, Different Series): Parts with identical capacitance, tolerance, voltage rating, and operating temperature but from an alternative CDE series (DME versus DMM). Physical dimensions and lead spacing may differ; PCB layout verification is required.

Cross-Manufacturer Upgrade Substitutes (Higher Voltage, Tighter Tolerance): Parts from alternative manufacturers (EPCOS - TDK Electronics) with identical capacitance, higher voltage rating (250V), improved tolerance (±5% versus ±10%), and compatible through-hole radial configuration. These parts meet automotive-grade specifications (AEC-Q200) and provide enhanced reliability.

Key Substitution Parameters:

• Capacitance: 0.68 µF (fixed)
• Voltage Rating - DC: 100V minimum (equal or higher acceptable)
• Tolerance: ±10% maximum (equal or tighter acceptable)
• Mounting Type: Through Hole (fixed)
• Package / Case: Radial (fixed)
• Operating Temperature: -55°C ~ 125°C minimum (equal or wider acceptable)
• RoHS Status: ROHS3 Compliant (mandatory)

Parameter Comparison

Engineering Selection Recommendations

DME2P68K-F (Upgrade Substitute): This part is suitable for applications requiring higher voltage margin while maintaining identical capacitance and tolerance. The 250V DC rating provides 2.5× voltage headroom compared to the original specification. Physical dimensions are comparable (18.50mm × 6.50mm versus 18.00mm × 7.00mm), with identical 15.00mm lead spacing. Both parts are ROHS3 Compliant and Active in product status. Height difference (15.00mm versus 14.00mm) requires PCB clearance verification.

DME1P68K-F (Similar Substitute): This part maintains identical electrical specifications (0.68 µF, ±10%, 100V DC) and is from the same manufacturer's DME series. Significant physical differences exist: smaller footprint (12.50mm × 6.00mm), reduced height (13.40mm), and different lead spacing (10.00mm versus 15.00mm). This substitute is suitable only when PCB layout accommodates the compact form factor. ROHS3 Compliant and Active status confirmed.

B32522C3684J000 (Cross-Manufacturer Upgrade): This EPCOS - TDK Electronics part provides 250V DC rating with improved ±5% tolerance. Physical dimensions match the original (18.00mm × 7.00mm) with identical 15.00mm lead spacing, simplifying PCB integration. Height is reduced to 12.50mm. This part carries AEC-Q200 automotive-grade certification and is ROHS3 Compliant. Suitable for applications requiring enhanced reliability and tighter tolerance specifications.

Selection Criteria Summary:

• All substitutes maintain 0.68 µF capacitance and -55°C ~ 125°C operating range
• All substitutes are ROHS3 Compliant and Active in product status
• Voltage rating upgrades (100V to 250V) are electrically backward-compatible
• Physical dimensions and lead spacing must be verified against PCB layout
• Tolerance improvement (±10% to ±5%) is available with B32522C3684J000

Frequently Asked Questions (FAQ)

Q: Can DME2P68K-F replace DMM1P68K-F in any circuit?

A: Yes, from an electrical standpoint. The DME2P68K-F has identical capacitance (0.68 µF) and tolerance (±10%), with a higher voltage rating (250V versus 100V). Higher voltage ratings are electrically backward-compatible in circuits designed for lower voltages. However, physical dimensions differ slightly (18.50mm × 6.50mm versus 18.00mm × 7.00mm), and height increases from 14.00mm to 15.00mm. PCB layout clearance must be verified before substitution.

Q: What is the difference between DME1P68K-F and DMM1P68K-F?

A: Both parts have identical electrical specifications: 0.68 µF capacitance, ±10% tolerance, 100V DC rating, and -55°C ~ 125°C operating temperature. The primary difference is the physical form factor. DME1P68K-F is significantly smaller (12.50mm × 6.00mm with 10.00mm lead spacing) compared to DMM1P68K-F (18.00mm × 7.00mm with 15.00mm lead spacing). DME1P68K-F is suitable only for compact PCB designs with compatible footprints.

Q: Why would I choose B32522C3684J000 over the CDE alternatives?

A: B32522C3684J000 offers three advantages: (1) improved tolerance specification (±5% versus ±10%), (2) AEC-Q200 automotive-grade certification for enhanced reliability, and (3) identical physical dimensions to the original DMM1P68K-F (18.00mm × 7.00mm with 15.00mm lead spacing), simplifying PCB integration. The 250V DC rating provides voltage margin equivalent to DME2P68K-F. This part is optimal for applications requiring tighter capacitance tolerance and automotive-grade reliability.

Q: Are all substitute parts ROHS3 Compliant?

A: Yes. All listed substitutes—DME2P68K-F, DME1P68K-F, and B32522C3684J000—are ROHS3 Compliant. This ensures regulatory compliance for applications subject to RoHS directives.

Q: What is the lead spacing significance for substitution?

A: Lead spacing determines PCB footprint compatibility. The original DMM1P68K-F and upgrade substitutes (DME2P68K-F and B32522C3684J000) all use 15.00mm lead spacing, allowing direct PCB footprint compatibility. DME1P68K-F uses 10.00mm lead spacing, requiring a different PCB footprint and is suitable only for compact designs. Lead spacing verification is mandatory before component substitution.

Q: Can I use a 250V rated capacitor in a 100V circuit?

A: Yes. Higher voltage-rated capacitors are electrically backward-compatible in lower-voltage circuits. A 250V-rated capacitor operates safely in a 100V circuit. This provides voltage margin and can improve circuit reliability. No circuit modification is required.

Q: What does ±5% tolerance mean compared to ±10%?

A: Tolerance specifies the allowable deviation from the nominal capacitance value. ±10% tolerance allows capacitance to range from 0.612 µF to 0.748 µF. ±5% tolerance narrows this range to 0.646 µF to 0.714 µF. Tighter tolerance (±5%) is beneficial for precision circuits where capacitance accuracy is critical. B32522C3684J000 provides this improved specification.

Q: Are there any temperature rating differences among substitutes?

A: No. All parts—DMM1P68K-F, DME2P68K-F, DME1P68K-F, and B32522C3684J000—operate across the identical temperature range of -55°C to 125°C. Temperature rating is not a differentiating factor for substitution.

Q: What does AEC-Q200 certification mean?

A: AEC-Q200 is an automotive-grade reliability standard for passive components. B32522C3684J000 carries this certification, indicating it meets stringent automotive industry requirements for quality, reliability, and performance. This certification is relevant for automotive applications or systems requiring automotive-grade component reliability.