Equivalent & Substitute Parts for DME2S1K-F Film Capacitor

Part Overview

The DME2S1K-F is a 10000 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) in the DME series. This radial polyester metallized film capacitor operates at 250V DC with ±10% tolerance and is rated for -55°C to 125°C. The part is Active status and ROHS3 compliant. Substitute parts are identified when equivalent electrical performance and mechanical compatibility are required due to inventory constraints, design optimization, or voltage/tolerance upgrades.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	10000 pF	Must match exactly
Tolerance	±10%	Determines acceptable variance; tighter tolerance (±5%) is acceptable upgrade
Voltage Rating - DC	250V	Minimum requirement; higher voltage ratings are acceptable substitutes
Voltage Rating - AC	160V	Minimum requirement; higher AC ratings are acceptable substitutes
Dielectric Material	Polyester, Metallized	Must be polyester-based film; metallized construction required
Operating Temperature	-55°C to 125°C	Must meet or exceed this range
Mounting Type	Through Hole	Must be through-hole radial configuration
Termination	PC Pins	Must use PC pin termination
Lead Spacing	0.295" (7.50mm)	Critical for PCB compatibility; must match or be mechanically compatible
RoHS Status	ROHS3 Compliant	Regulatory requirement; substitute must maintain compliance

Substitute Part Grouping Explanation

Substitution logic is based on the following allowed parameters:

Electrical Compatibility Criteria:

Capacitance value must be 10000 pF (exact match)
Tolerance of ±5% is acceptable as an upgrade from ±10%
DC voltage rating must be ≥250V (higher ratings are acceptable)
AC voltage rating must be ≥160V (higher ratings are acceptable)
Dielectric material must be polyester-based, metallized construction
Operating temperature range must encompass -55°C to 125°C

Mechanical Compatibility Criteria:

Mounting type must be through-hole radial
Termination must be PC pins
Lead spacing of 0.295" (7.50mm) is standard; minor dimensional variations in length and width are acceptable if PCB footprint compatibility is maintained
Package/case must be radial configuration

Regulatory Compliance:

RoHS3 compliance required
REACH unaffected status maintained

Substitute parts are grouped into three categories: Direct Substitutes (same voltage rating), Voltage Upgrades (higher voltage rating), and Cross-Manufacturer Alternatives (different manufacturer, equivalent specifications).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Temp Range	Lead Spacing	Height (Max)	RoHS Status
DME2S1K-F	CDE	10000 pF	±10%	250V	160V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.354" (9.00mm)	ROHS3
DME4S1K-F	CDE	10000 pF	±10%	400V	200V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.291" (7.40mm)	ROHS3
167103J250A-F	CDE	10000 pF	±5%	250V	160V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.276" (7.00mm)	ROHS3
167103J400A-F	CDE	10000 pF	±5%	400V	200V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.276" (7.00mm)	ROHS3
167103K400A-F	CDE	10000 pF	±10%	400V	200V	Polyester, Metallized	-55°C to 125°C	0.295" (7.50mm)	0.276" (7.00mm)	ROHS3
B32529C3103K000	EPCOS - TDK Electronics	10000 pF	±10%	250V	160V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	0.197" (5.00mm)	0.256" (6.50mm)	ROHS3
B32529C3103K189	EPCOS - TDK Electronics	10000 pF	±10%	250V	160V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	0.197" (5.00mm)	0.256" (6.50mm)	ROHS3
B32529C3103K289	EPCOS - TDK Electronics	10000 pF	±10%	250V	160V	Polyester (PET), Metallized - Stacked	-55°C to 125°C	0.197" (5.00mm)	0.256" (6.50mm)	ROHS3

Engineering Selection Recommendations

Direct Substitutes (Same Voltage Rating):

The 167103J250A-F and 167103J250A-F represent direct electrical substitutes with identical 250V DC and 160V AC ratings. These CDE 167 series parts offer tighter ±5% tolerance compared to the ±10% of the DME2S1K-F, providing improved capacitance accuracy. Both maintain ROHS3 compliance and the required -55°C to 125°C operating range. The 167103J250A-F has reduced height (0.276" vs. 0.354"), which may provide PCB layout advantages in space-constrained applications.

Voltage Upgrade Substitutes:

The DME4S1K-F, 167103J400A-F, and 167103K400A-F provide 400V DC rating with 200V AC rating, exceeding the original 250V DC / 160V AC specification. These parts are suitable for applications requiring higher voltage margin or operating in elevated voltage environments. The DME4S1K-F maintains the same CDE DME series lineage. The 167 series upgrades (167103J400A-F with ±5% tolerance and 167103K400A-F with ±10% tolerance) offer both voltage and tolerance improvements. All maintain ROHS3 compliance and the required temperature range.

Cross-Manufacturer Alternatives:

The EPCOS B32529C series (B32529C3103K000, B32529C3103K189, B32529C3103K289) are equivalent 10000 pF, 250V DC, ±10% polyester metallized film capacitors. These parts feature AEC-Q200 automotive qualification and are rated for automotive and EMI/RFI suppression applications. The B32529C series uses stacked radial construction with reduced lead spacing (0.197" vs. 0.295"), resulting in a more compact footprint. These parts are ROHS3 compliant and maintain the -55°C to 125°C operating range. Lead spacing difference requires PCB footprint verification before selection.

Compliance Status:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original DME2S1K-F specification.

Frequently Asked Questions (FAQ)

Q: Can I substitute DME4S1K-F for DME2S1K-F in a 250V application?

A: Yes. The DME4S1K-F has a 400V DC rating, which exceeds the 250V requirement. Higher voltage-rated capacitors are electrically compatible with lower-voltage applications. The 400V rating provides additional safety margin and is a valid substitute.

Q: What is the difference between ±10% and ±5% tolerance?

A: Tolerance specifies the acceptable deviation from the nominal 10000 pF capacitance value. ±10% allows deviation from 9000 pF to 11000 pF. ±5% allows deviation from 9500 pF to 10500 pF. The ±5% tolerance parts (167103J250A-F, 167103J400A-F) provide tighter capacitance accuracy and are acceptable upgrades from ±10% specifications.

Q: Are the EPCOS B32529C parts compatible with the same PCB footprint?

A: The B32529C series has different lead spacing (0.197" vs. 0.295") and smaller overall dimensions. PCB footprint compatibility must be verified before substitution. The reduced size may require PCB redesign or may not fit existing through-hole patterns designed for 0.295" spacing.

Q: What does "stacked radial" construction mean in the B32529C series?

A: Stacked radial construction refers to the internal arrangement of the film layers within the capacitor. This design achieves the same capacitance value in a more compact physical package compared to standard radial construction. Electrical performance and specifications remain equivalent.

Q: Can I use a 167103J400A-F (±5%, 400V) in place of DME2S1K-F (±10%, 250V)?

A: Yes. The 167103J400A-F meets all electrical requirements: 10000 pF capacitance, ±5% tolerance (tighter than ±10%), 400V DC (exceeds 250V requirement), and -55°C to 125°C operating range. The reduced height (0.276" vs. 0.354") may provide layout benefits. This represents a full upgrade substitute.

Q: What is the significance of AEC-Q200 rating on the B32529C parts?

A: AEC-Q200 is an automotive qualification standard. Parts with this rating have undergone additional testing for automotive applications. This certification does not affect compatibility with non-automotive applications but indicates higher reliability standards.

Q: Are all substitute parts in stock?

A: Inventory status is provided in the part specifications. DME4S1K-F has 3977 units, 167103J250A-F has 2433 units, 167103J400A-F has 4201 units, 167103K400A-F has 3743 units, B32529C3103K000 has 2668 units, B32529C3103K189 has 8934 units, and B32529C3103K289 has 6500 units available as new original stock.

Q: Do all parts meet RoHS3 compliance?

A: Yes. All listed substitute parts are ROHS3 compliant and REACH unaffected, maintaining regulatory compatibility with the original DME2S1K-F specification.

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