BFC237221104 Equivalent & Substitute Parts

Part Overview

The BFC237221104 is a 0.1 µF film capacitor manufactured by Vishay Beyschlag/Draloric/BC Components, rated for 100V DC operation with ±10% tolerance. This polyester metallized radial capacitor is part of the MKT372 series and is designed for general-purpose applications requiring long-life performance across the -55°C to 105°C operating temperature range. The part is ROHS3 compliant and currently in active production status with 910 units in stock.

Equivalent and substitute parts are necessary when the original BFC237221104 becomes unavailable, when design requirements demand higher voltage ratings or improved tolerance specifications, or when alternative manufacturers' components offer superior availability or cost optimization while maintaining electrical and mechanical compatibility.

Key Parameters

Parameter	Value
Capacitance	0.1 µF
Tolerance	±10%
Voltage Rating - DC	100V
Voltage Rating - AC	63V
Dielectric Material	Polyester, Metallized
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	0.394" (10.00mm)
Termination	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitute parts for the BFC237221104 are classified into two primary categories based on electrical and mechanical compatibility:

Direct Equivalents (Same Electrical Ratings): Parts maintaining identical capacitance (0.1 µF), voltage rating (100V DC / 63V AC), tolerance (±10%), dielectric material (polyester metallized), and lead spacing (10.00mm). These parts are mechanically and electrically interchangeable with the original BFC237221104 and require no circuit redesign.

Upgrade Substitutes (Enhanced Voltage Rating): Parts with identical capacitance, tolerance, and lead spacing but rated for 250V DC / 160V AC operation. These components provide higher voltage margin and are backward-compatible in circuits designed for 100V operation, offering improved safety margin and component longevity.

Alternative Manufacturer Equivalents: Parts from Cornell Dubilier Electronics (CDE) and EPCOS - TDK Electronics that match the core electrical specifications (0.1 µF, 100V DC or 250V DC, polyester metallized dielectric) while maintaining through-hole radial packaging and 10.00mm lead spacing. These alternatives provide supply chain flexibility and equivalent performance characteristics.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Tolerance	Voltage DC	Voltage AC	Dielectric	Lead Spacing	Operating Temp	RoHS Status
BFC237221104	Vishay	0.1 µF	±10%	100V	63V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
BFC237241104	Vishay	0.1 µF	±10%	250V	160V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
BFC237021104	Vishay	0.1 µF	±10%	100V	63V	Polyester, Metallized	5.08mm	-55°C to 105°C	ROHS3
BFC237121104	Vishay	0.1 µF	±10%	100V	63V	Polyester, Metallized	7.62mm	-55°C to 105°C	ROHS3
160104J100C-F	CDE	0.1 µF	±5%	100V	63V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
160104J250D-F	CDE	0.1 µF	±5%	250V	160V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
160104K100C-F	CDE	0.1 µF	±10%	100V	63V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
160104K250D-F	CDE	0.1 µF	±10%	250V	160V	Polyester, Metallized	10.00mm	-55°C to 105°C	ROHS3
B32521C1104J000	EPCOS - TDK	0.1 µF	±5%	100V	63V	Polyester, Metallized - Stacked	10.00mm	-55°C to 125°C	ROHS3
B32521C3104J000	EPCOS - TDK	0.1 µF	±5%	250V	160V	Polyester, Metallized - Stacked	10.00mm	-55°C to 125°C	ROHS3
B32521C3104J289	EPCOS - TDK	0.1 µF	±5%	250V	160V	Polyester, Metallized - Stacked	10.00mm	-55°C to 125°C	ROHS3

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): BFC237121104 and 160104K100C-F are direct electrical equivalents to BFC237221104, both maintaining 0.1 µF capacitance, ±10% tolerance, and 100V DC rating. BFC237121104 is a Vishay part within the same manufacturer family (MKT371 series) and is recommended for applications requiring continuity within the Vishay product line. The 160104K100C-F from Cornell Dubilier Electronics provides equivalent performance with identical lead spacing (10.00mm) and is suitable when supply chain diversification is required.

For Voltage Margin Enhancement: BFC237241104, 160104J250D-F, 160104K250D-F, B32521C3104J000, and B32521C3104J289 are rated for 250V DC operation and are backward-compatible substitutes for circuits originally designed for 100V operation. These upgrades provide increased voltage safety margin and extended component life in applications subject to transient overvoltage conditions. All upgrade options maintain ROHS3 compliance and identical lead spacing.

For Tolerance Improvement: 160104J100C-F, 160104J250D-F, B32521C1104J000, B32521C3104J000, and B32521C3104J289 offer ±5% tolerance compared to the original ±10% specification. These parts are suitable for precision applications where tighter capacitance tolerance is required while maintaining all other electrical and mechanical parameters.

For Extended Temperature Range: B32521C1104J000, B32521C3104J000, and B32521C3104J289 from EPCOS - TDK Electronics extend the upper operating temperature limit to 125°C (compared to 105°C for Vishay and CDE parts). These alternatives are recommended for high-temperature applications while maintaining all other electrical specifications and ROHS3 compliance.

All substitute parts listed are in active production status and ROHS3 compliant, ensuring long-term availability and regulatory compliance.

Frequently Asked Questions (FAQ)

Q: Can BFC237121104 be used as a direct replacement for BFC237221104? A: Yes. Both parts share identical electrical specifications (0.1 µF, ±10%, 100V DC, 63V AC) and dielectric material (polyester metallized). The primary difference is physical dimension and lead spacing. BFC237121104 has a 7.62mm lead spacing versus 10.00mm for BFC237221104. Verify PCB pad spacing before substitution.

Q: What is the advantage of using BFC237241104 instead of BFC237221104? A: BFC237241104 is rated for 250V DC operation compared to 100V DC for BFC237221104. This higher voltage rating provides increased safety margin in circuits subject to transient overvoltage and extends component operational life. Electrical performance at nominal operating voltage remains equivalent.

Q: Are Cornell Dubilier Electronics (CDE) parts compatible with Vishay parts? A: Yes, for applications where lead spacing and physical dimensions are compatible. CDE 160104K100C-F and 160104K250D-F maintain identical electrical specifications and 10.00mm lead spacing as their Vishay equivalents. Verify PCB layout compatibility before substitution.

Q: What is the difference between ±5% and ±10% tolerance parts? A: Tolerance specifies the allowable deviation from the nominal capacitance value. ±5% tolerance parts (160104J100C-F, B32521C1104J000) provide tighter capacitance accuracy compared to ±10% parts. Select ±5% tolerance for precision filtering, timing, or resonant circuit applications where capacitance accuracy is critical.

Q: Can EPCOS B32521C3104J289 be used in place of BFC237221104? A: Electrically yes, with the following considerations: B32521C3104J289 is rated for 250V DC (higher than the 100V DC requirement), offers ±5% tolerance (tighter than ±10%), and extends operating temperature to 125°C. Physical dimensions and lead spacing (10.00mm) are compatible. This part is suitable as an upgrade substitute.

Q: What does "lead spacing" mean and why is it important? A: Lead spacing is the distance between the two connection pins on the radial capacitor. BFC237221104 has 10.00mm lead spacing. This dimension must match PCB pad spacing to ensure proper mechanical fit and electrical connection. Parts with different lead spacing (5.08mm or 7.62mm) cannot be used without PCB redesign.

Q: Are all listed substitute parts ROHS3 compliant? A: Yes. All parts listed maintain ROHS3 compliance, ensuring they meet current environmental and regulatory requirements for electronic component manufacturing and use.

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