BFC238320684 Equivalent & Substitute Parts

Part Overview

The BFC238320684 is a 0.68 µF film capacitor manufactured by Vishay Beyschlag/Draloric/BC Components, rated for 630V DC operation with polypropylene metallized dielectric. This radial through-hole component is designed for high-pulse and DV/DT applications requiring stable capacitance and low ESR characteristics. The part maintains Active product status with 841 units currently in stock.

Substitute parts become necessary when the primary component experiences supply constraints, extended lead times, or when design requirements permit alternative manufacturers meeting equivalent electrical and mechanical specifications.

Key Parameters

Parameter	Value
Capacitance	0.68 µF
Tolerance	±5%
Voltage Rating - DC	630V
Dielectric Material	Polypropylene (PP), Metallized
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Radial
Lead Spacing	1.083" (27.50mm)
Termination	PC Pins
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the BFC238320684 is determined by strict equivalence across the following critical parameters:

Capacitance value: 0.68 µF (exact match required)
Tolerance: ±5% (exact match required)
Voltage Rating - DC: 630V (minimum requirement; higher ratings acceptable)
Dielectric Material: Polypropylene (PP), Metallized (exact match required)
Mounting Type: Through Hole (exact match required)
Package / Case: Radial (exact match required)
Lead Spacing: 1.083" (27.50mm) (exact match required)
Termination: PC Pins (exact match required)
RoHS Status: ROHS3 Compliant (exact match required)

The substitute part B32654A6684J000 meets all mandatory substitution criteria. Variations in AC voltage rating, physical dimensions (length and width), height, and operating temperature upper limit do not preclude substitution when DC voltage rating and lead spacing remain unchanged.

Parameter Comparison

Parameter	BFC238320684 (Vishay)	B32654A6684J000 (EPCOS - TDK)	Compatibility
Manufacturer Part Number	BFC238320684	B32654A6684J000	Different manufacturers
Capacitance	0.68 µF	0.68 µF	Equivalent
Tolerance	±5%	±5%	Equivalent
Voltage Rating - DC	630V	630V	Equivalent
Voltage Rating - AC	220V	250V	Substitute rated higher
Dielectric Material	Polypropylene (PP), Metallized	Polypropylene (PP), Metallized	Equivalent
Operating Temperature Range	-55°C ~ 105°C	-55°C ~ 100°C	Substitute range 5°C narrower at upper limit
Mounting Type	Through Hole	Through Hole	Equivalent
Package / Case	Radial	Radial	Equivalent
Size / Dimension	1.220" L x 0.591" W (31.00mm x 15.00mm)	1.240" L x 0.433" W (31.50mm x 11.00mm)	Substitute is narrower; length difference negligible
Height - Seated (Max)	0.984" (25.00mm)	0.827" (21.00mm)	Substitute is 4mm shorter
Lead Spacing	1.083" (27.50mm)	1.083" (27.50mm)	Equivalent
Termination	PC Pins	PC Pins	Equivalent
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	Equivalent
Moisture Sensitivity Level (MSL)	1 (Unlimited)	Not Applicable	Substitute has no MSL restriction

Engineering Selection Recommendations

The B32654A6684J000 (EPCOS - TDK Electronics) is a direct substitute for the BFC238320684 based on electrical equivalence and mechanical compatibility. Both components are Active products with ROHS3 compliance and identical lead spacing for PCB mounting.

The substitute part carries AEC-Q200 automotive qualification and REACH Unaffected status, providing additional compliance documentation. The narrower physical profile (11.00mm vs 15.00mm width) and reduced seated height (21.00mm vs 25.00mm) may offer layout advantages in space-constrained applications without affecting electrical performance.

The operating temperature upper limit of the substitute is 100°C compared to 105°C for the original part. This 5°C difference is acceptable for applications where the maximum ambient temperature does not exceed 95°C, allowing a 5°C safety margin.

Frequently Asked Questions (FAQ)

Q: Can B32654A6684J000 be used as a direct replacement on existing PCBs designed for BFC238320684?

A: Yes. Both parts share identical lead spacing (27.50mm) and PC pin termination. The substitute's smaller physical dimensions (narrower width and lower height) ensure it fits within the original footprint without modification.

Q: What is the significance of the different AC voltage ratings (220V vs 250V)?

A: The AC voltage rating indicates the maximum AC voltage the capacitor can withstand. The substitute's higher AC rating (250V) provides additional margin. Since both parts are rated identically for DC voltage (630V), the AC rating difference does not affect substitution eligibility for DC-biased or DC-only applications.

Q: Does the 5°C difference in maximum operating temperature affect substitution suitability?

A: The substitute operates to 100°C maximum versus 105°C for the original. Substitution is appropriate when the application's maximum ambient temperature plus any internal heating does not exceed 95°C, providing a 5°C safety margin. For applications requiring operation above 95°C, the original BFC238320684 is required.

Q: Are there any compliance or certification differences between these parts?

A: Both parts are ROHS3 compliant. The substitute carries AEC-Q200 automotive qualification and REACH Unaffected status. The original part lists Moisture Sensitivity Level 1 (Unlimited), while the substitute lists MSL as Not Applicable, indicating no moisture sensitivity restriction.

Q: How do the physical dimension differences impact circuit board layout?

A: The substitute is 4mm shorter in seated height and 4mm narrower in width. These reductions may provide layout benefits in compact designs. The identical lead spacing ensures no PCB footprint modification is required.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message