Equivalent & Substitute Parts for DMT4S1K-F

Part Overview

The DMT4S1K-F is a 10000 pF film capacitor manufactured by Cornell Dubilier Electronics (CDE) with a 400V DC voltage rating, ±10% tolerance, and polyester metallized dielectric. This radial through-hole component operates across -55°C to 125°C and is classified as Active product status. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility allow direct replacement in circuit applications, particularly when addressing component availability, performance upgrades, or design optimization requirements.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	10000 pF	Must match exactly for circuit function
Voltage Rating - DC	400V	Minimum acceptable rating; higher ratings allow substitution
Voltage Rating - AC	200V	Operating condition specification
Tolerance	±10%	Acceptable tolerance range; tighter tolerances (±5%) are upgrades
Dielectric Material	Polyester, Metallized	Must be compatible; PET variants acceptable
Mounting Type	Through Hole	Must match PCB design
Package / Case	Radial	Physical form factor requirement
Operating Temperature	-55°C ~ 125°C	Application environment compatibility
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement

Substitute Part Grouping Explanation

Substitution relationships are established based on the following criteria:

Upgrade Substitutes (Higher voltage rating, same or better tolerance):

Voltage rating increased from 400V DC to 630V DC
Capacitance remains 10000 pF
Tolerance maintained at ±10% or improved to ±5%
Physical dimensions may vary within radial package constraints
Operating temperature range may differ but must cover application requirements

Similar Substitutes (Equivalent electrical specifications, different physical form):

Identical capacitance (10000 pF), voltage (400V DC), and tolerance (±10%)
Different series designation (167, DME vs. DMT)
Reduced physical dimensions while maintaining radial configuration
Lead spacing may differ; PCB layout compatibility required

Direct Substitutes (Cross-manufacturer equivalents):

EPCOS/TDK Electronics B32521C6103K series
Identical electrical specifications to DMT4S1K-F
Product status: Not For New Designs (legacy component)
Polyethylene Terephthalate (PET) metallized dielectric
Stacked radial construction

Upgrade with Tolerance Improvement (Higher voltage, tighter tolerance):

EPCOS B32521C6103J: 400V DC, ±5% tolerance
Enhanced precision for critical applications

Premium Upgrade (Highest voltage rating):

EPCOS B32521N8103J000: 630V DC, ±5% tolerance
Active product status with extended voltage margin

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Temp Range	Product Status	Inventory
DMT4S1K-F	CDE	10000 pF	±10%	400V	200V	Polyester, Metallized	-55°C ~ 125°C	Active	1674 Pcs
160103J630C-F	CDE	10000 pF	±5%	630V	220V	Polyester, Metallized	-55°C ~ 105°C	Active	2034 Pcs
160103K630C-F	CDE	10000 pF	±10%	630V	220V	Polyester, Metallized	-55°C ~ 105°C	Active	3028 Pcs
DME6S1K-F	CDE	10000 pF	±10%	630V	250V	Polyester, Metallized	-55°C ~ 125°C	Active	3603 Pcs
167103K400A-F	CDE	10000 pF	±10%	400V	200V	Polyester, Metallized	-55°C ~ 125°C	Active	3743 Pcs
DME4S1K-F	CDE	10000 pF	±10%	400V	200V	Polyester, Metallized	-55°C ~ 125°C	Active	3977 Pcs
B32521C6103K	EPCOS - TDK	10000 pF	±10%	400V	200V	Polyester, PET, Metallized - Stacked	-55°C ~ 125°C	Not For New Designs	4205 Pcs
B32521C6103K289	EPCOS - TDK	10000 pF	±10%	400V	200V	Polyester, PET, Metallized - Stacked	-55°C ~ 125°C	Not For New Designs	4987 Pcs
B32521C6103J	EPCOS - TDK	10000 pF	±5%	400V	200V	Polyester, PET, Metallized - Stacked	-55°C ~ 125°C	Not For New Designs	7388 Pcs
B32521N8103J000	EPCOS - TDK	10000 pF	±5%	630V	200V	Polyester, PET, Metallized - Stacked	-55°C ~ 125°C	Active	3449 Pcs
B32529C6103K	EPCOS - TDK	10000 pF	±10%	400V	200V	Polyester, PET, Metallized - Stacked	-55°C ~ 125°C	Not For New Designs	6028 Pcs

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Specifications):

DME4S1K-F and 167103K400A-F are CDE Active products with identical electrical parameters to DMT4S1K-F (10000 pF, ±10%, 400V DC, -55°C ~ 125°C). Both are ROHS3 compliant. Selection between these depends on PCB layout constraints, as physical dimensions differ. DME4S1K-F offers compact form factor (10.30mm L × 4.30mm W) while 167103K400A-F provides smaller footprint (10.50mm L × 3.50mm W).

For Voltage Margin Enhancement:

CDE 160103K630C-F and DME6S1K-F provide 630V DC rating with maintained ±10% tolerance and Active product status. DME6S1K-F preserves the full -55°C ~ 125°C operating range, while 160103K630C-F operates to 105°C maximum. Both are ROHS3 compliant. Selection depends on thermal environment requirements.

For Tolerance Upgrade:

CDE 160103J630C-F combines ±5% tolerance with 630V DC rating and Active status. Operating temperature limited to -55°C ~ 105°C. ROHS3 compliant. Suitable for precision applications requiring tighter capacitance control.

For Cross-Manufacturer Equivalence:

EPCOS B32521C6103K and B32521C6103K289 provide electrical equivalence with stacked radial construction. Both marked "Not For New Designs." B32521C6103J offers ±5% tolerance upgrade at 400V DC. B32521N8103J000 is the only EPCOS Active product in this group, combining 630V DC with ±5% tolerance and full -55°C ~ 125°C range. All EPCOS variants are ROHS3 compliant.

Frequently Asked Questions (FAQ)

Q: Can DMT4S1K-F be replaced with a 630V rated capacitor?

A: Yes. Higher voltage ratings provide design margin without affecting circuit function. CDE 160103K630C-F, DME6S1K-F, and EPCOS B32521N8103J000 all substitute at 630V DC while maintaining 10000 pF capacitance. Verify operating temperature requirements: DME6S1K-F and B32521N8103J000 support -55°C ~ 125°C; 160103K630C-F limits to -55°C ~ 105°C.

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

A: Tolerance defines the acceptable capacitance deviation from nominal value. ±10% allows ±1000 pF variation from 10000 pF (9000-11000 pF range). ±5% restricts variation to ±500 pF (9500-10500 pF range). Tighter tolerance (±5%) is suitable for precision filtering, timing circuits, or applications with strict capacitance requirements. ±10% is acceptable for general-purpose filtering and coupling applications.

Q: Are EPCOS B32521 series parts compatible with CDE DMT4S1K-F?

A: Electrically compatible for 400V DC applications. B32521C6103K and B32521C6103K289 match all electrical specifications. However, both are marked "Not For New Designs," indicating end-of-life status. For new designs, select Active products: CDE DME4S1K-F, 167103K400A-F, or EPCOS B32521N8103J000.

Q: How do physical dimensions affect substitution?

A: Radial through-hole capacitors must fit PCB pad spacing and clearance requirements. Lead spacing varies: DMT4S1K-F uses 10.20mm; 167103K400A-F uses 7.50mm; B32529C6103K uses 5.00mm. Verify PCB layout compatibility before substitution. Compact variants (smaller dimensions) fit tighter layouts but may have height constraints in confined spaces.

Q: What does "Not For New Designs" mean?

A: This product status indicates the component is in end-of-life phase. Existing inventory remains available, but manufacturers recommend Active alternatives for new circuit designs. EPCOS B32521C6103K, B32521C6103K289, B32521C6103J, and B32529C6103K carry this designation. Active alternatives include all CDE parts and EPCOS B32521N8103J000.

Q: Is polyester metallized dielectric equivalent to PET metallized?

A: Yes. Polyester and Polyethylene Terephthalate (PET) are equivalent materials. Both provide identical electrical performance in film capacitor applications. CDE uses "Polyester, Metallized" designation; EPCOS uses "Polyester, Polyethylene Terephthalate (PET), Metallized." Stacked construction in EPCOS parts does not affect electrical equivalence.

Q: Can DMT4S1K-F operate at 630V DC?

A: No. The 400V DC rating is the maximum safe operating voltage. Operating above this rating risks dielectric breakdown and component failure. Use 630V-rated substitutes (160103K630C-F, DME6S1K-F, B32521N8103J000) only when 630V DC is the circuit requirement.

Q: What is the significance of RoHS3 compliance?

A: RoHS3 (Restriction of Hazardous Substances Directive 3) compliance certifies the component contains no lead, cadmium, mercury, hexavalent chromium, polybrominated biphenyls, or polybrominated diphenyl ethers above specified thresholds. All listed substitutes are ROHS3 compliant, meeting environmental and regulatory requirements for EU and global markets.

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