Equivalent & Substitute Parts for 185104K250RGB-F

Part Overview

The Cornell Dubilier Electronics 185104K250RGB-F is a 0.1 µF film capacitor rated for 250V DC operation with ±10% tolerance. This radial polyester metallized capacitor is designed for general-purpose applications and is currently in active production status with 753 units in stock. Alternative equivalent and substitute parts are identified to support procurement flexibility, inventory management, and design optimization across different packaging formats and manufacturer sources.

Key Parameters

Parameter	Value
Capacitance	0.1 µF
Tolerance	±10%
Voltage Rating - DC	250V
Voltage Rating - AC	160V
Dielectric Material	Polyester, Metallized
Operating Temperature Range	-55°C ~ 125°C
Mounting Type	Through Hole
Package / Case	Radial
Termination	PC Pins
RoHS Status	ROHS3 Compliant
REACH Status	REACH Unaffected

Substitute Part Grouping Explanation

Substitution eligibility for the 185104K250RGB-F is determined by strict equivalence across the following critical parameters:

Mandatory Matching Parameters:

Capacitance: 0.1 µF (exact match required)
Voltage Rating - DC: 250V (minimum requirement)
Voltage Rating - AC: 160V (minimum requirement)
Dielectric Material: Polyester, Metallized
Mounting Type: Through Hole
Package / Case: Radial
Termination: PC Pins
RoHS Status: ROHS3 Compliant

Allowable Variations:

Tolerance: ±10% or tighter (±5% acceptable as upgrade)
Operating Temperature Range: -55°C minimum to 105°C or higher
Physical dimensions: Variations permitted if PCB layout accommodates
Lead spacing: Variations permitted if PCB layout accommodates
Packaging format: Tape & Reel (TR), Bulk, or Cut Tape (CT) interchangeable based on assembly requirements
Manufacturer: Cornell Dubilier Electronics or EPCOS - TDK Electronics

Substitute parts are grouped into three categories: Similar (same tolerance, different packaging or dimensions), Direct (identical electrical specifications), and Upgrade (tighter tolerance with same electrical ratings).

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Temp Range	Packaging	Lead Spacing	Inventory
185104K250RGB-F	Cornell Dubilier	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Tape & Reel	5.00mm	753 Pcs
160104K250D-F	Cornell Dubilier	0.1 µF	±10%	250V	160V	-55°C ~ 105°C	Bulk	10.00mm	2929 Pcs
DME2P1K-F	Cornell Dubilier	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Bulk	7.50mm	1926 Pcs
B32529C3104K000	EPCOS - TDK	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Bulk	5.00mm	63354 Pcs
B32529C3104J000	EPCOS - TDK	0.1 µF	±5%	250V	160V	-55°C ~ 125°C	Bulk	5.00mm	47439 Pcs
B32529C3104J189	EPCOS - TDK	0.1 µF	±5%	250V	160V	-55°C ~ 125°C	Cut Tape	5.00mm	35485 Pcs
B32529C3104J289	EPCOS - TDK	0.1 µF	±5%	250V	160V	-55°C ~ 125°C	Cut Tape	5.00mm	12624 Pcs
B32520C3104K000	EPCOS - TDK	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Bulk	7.50mm	12416 Pcs
B32520C3104K289	EPCOS - TDK	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Cut Tape	7.50mm	107116 Pcs
B32521C3104K189	EPCOS - TDK	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Tape & Reel	10.00mm	7674 Pcs
B32522C3104K000	EPCOS - TDK	0.1 µF	±10%	250V	160V	-55°C ~ 125°C	Bulk	15.00mm	4804 Pcs

Engineering Selection Recommendations

Direct Electrical Equivalents (Identical Specifications):

B32529C3104K000 is the primary direct equivalent to 185104K250RGB-F. Both parts share identical capacitance (0.1 µF), tolerance (±10%), voltage ratings (250V DC / 160V AC), operating temperature range (-55°C ~ 125°C), and lead spacing (5.00mm). This EPCOS - TDK part is ROHS3 compliant and carries AEC-Q200 automotive qualification. With 63,354 units in inventory, this part provides superior availability for high-volume procurement.

Tolerance Upgrade Options:

B32529C3104J000, B32529C3104J189, and B32529C3104J289 offer ±5% tolerance compared to the ±10% specification of the main part. These EPCOS - TDK parts maintain all other electrical parameters and are suitable for applications requiring tighter capacitance tolerance. Available in Bulk and Cut Tape packaging with combined inventory exceeding 95,000 units.

Packaging Format Alternatives:

160104K250D-F (Cornell Dubilier, Bulk packaging, 2929 units) and DME2P1K-F (Cornell Dubilier, Bulk packaging, 1926 units) provide equivalent electrical performance with different physical dimensions and lead spacing. These are suitable for applications where PCB layout accommodates the larger form factors.

Automotive-Qualified Alternatives:

All EPCOS - TDK B3252* series parts carry AEC-Q200 automotive qualification, making them suitable for automotive and industrial applications requiring enhanced reliability standards.

Compliance Status:

All listed substitute parts maintain ROHS3 compliance and REACH Unaffected status, ensuring regulatory compatibility with the original 185104K250RGB-F specification.

Frequently Asked Questions (FAQ)

Q: Can B32529C3104K000 be used as a direct replacement for 185104K250RGB-F?

A: Yes. B32529C3104K000 meets all electrical specifications: 0.1 µF capacitance, ±10% tolerance, 250V DC / 160V AC ratings, -55°C to 125°C operating range, and 5.00mm lead spacing. Both are ROHS3 compliant. Physical dimensions differ slightly (7.30mm x 4.50mm vs. 7.20mm x 5.00mm), requiring PCB layout verification.

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

A: Tolerance defines the allowable deviation from the nominal 0.1 µF capacitance value. ±10% permits 0.09 µF to 0.11 µF; ±5% permits 0.095 µF to 0.105 µF. The ±5% parts (B32529C3104J series) provide tighter capacitance control for precision applications. All other electrical parameters remain identical.

Q: Are packaging format differences (Tape & Reel, Bulk, Cut Tape) electrically significant?

A: No. Packaging format affects only handling, storage, and assembly processes. Tape & Reel (TR), Bulk, and Cut Tape (CT) formats contain identical components. Selection depends on assembly equipment compatibility and procurement volume requirements.

Q: Does lead spacing variation affect substitution eligibility?

A: Lead spacing variations (5.00mm, 7.50mm, 10.00mm, 15.00mm) require PCB layout verification. If the PCB footprint accommodates the alternate lead spacing, substitution is electrically valid. If not, the part cannot be used without PCB redesign.

Q: Why do EPCOS - TDK parts carry AEC-Q200 qualification while Cornell Dubilier parts do not list this rating?

A: AEC-Q200 is an automotive industry qualification standard. EPCOS - TDK B3252* series parts are qualified to this standard, making them suitable for automotive applications. Cornell Dubilier parts are general-purpose rated. Both meet the electrical specifications required for the 185104K250RGB-F application.

Q: Can 160104K250D-F be used if the operating temperature range is -55°C to 105°C instead of -55°C to 125°C?

A: Yes, if the application does not require operation above 105°C. The 160104K250D-F operating range (-55°C ~ 105°C) is narrower than the main part (-55°C ~ 125°C). Verify application temperature requirements before selection.

Q: What inventory considerations apply to substitute selection?

A: B32520C3104K289 offers the highest inventory (107,116 units), followed by B32529C3104K000 (63,354 units). For time-sensitive procurement, these parts provide superior availability. The main part 185104K250RGB-F has 753 units in stock.

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