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HomeProductsCapacitorsFilm CapacitorsBFC246863684
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BFC246863684 - Vishay Beyschlag/Draloric/BC Components

Manufacturer Part Number
BFC246863684
Manufacturer
Draloric/Vishay
Allelco Part Number
98D-BFC246863684
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
49,745 pcs available, New & Original
Parts Description
CAP FILM 0.68UF 10% 250VDC RAD
Package
Radial
Data sheet
BFC246863684.pdf

HTML Datasheet

MKT467, MKT468.pdf
RoHs Status
ROHS3 Compliant
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Our certification
In stock: 49745
  • Unit Price: $2.839
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $2.839 $2.84
200+ $1.133 $226.60
600+ $1.095 $657.00
1200+ $1.076 $1,291.20
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

BFC246863684 Tech Specifications
Vishay Beyschlag/Draloric/BC Components - BFC246863684 technical specifications, attributes, parameters and parts with similar specifications to Vishay Beyschlag/Draloric/BC Components - BFC246863684

Product Attribute Attribute Value
Manufacturer Draloric/Vishay
Voltage Rating - DC 250V
Voltage Rating - AC 160V
Tolerance ±10%
Termination PC Pins
Size / Dimension 0.689' L x 0.315' W (17.50mm x 8.00mm)
Series MKT468
Ratings -
Package / Case Radial
Product Attribute Attribute Value
Package Tape & Reel (TR)
Operating Temperature -55°C ~ 105°C
Mounting Type Through Hole
Lead Spacing 0.295' (7.50mm)
Height - Seated (Max) 0.630' (16.00mm)
Features -
Dielectric Material Polyester, Metallized
Capacitance 0.68 µF
Applications General Purpose

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) Not Applicable
REACH Status REACH Unaffected
ECCN EAR99
HTSUS 8532.25.0070

Frequently Asked Questions(FAQ)

What is the actual voltage derating curve for the BFC246863684, and how much margin should I apply for 250VDC applications at elevated temperatures?
The BFC246863684 is rated 250V DC but the MKT468 series polyester film capacitors exhibit voltage-dependent aging at elevated temperatures. Manufacturers typically recommend operating at 70–80% of rated voltage for continuous duty at maximum temperature (105°C). At 250V and 105°C, the BFC246863684 experiences accelerated dielectric loss and capacitance drift; most design practices suggest applying 150–175V practical operating limits for mission-critical applications. For the 0.68 µF value in the BFC246863684, this translates to approximately 60% derating in worst-case thermal scenarios. The MKT468 series metallized polyester film shows approximately 0.5–1.5% capacitance change per 10°C rise near 105°C.
How does the BFC246863684 compare to ceramic X7R capacitors of similar value for AC line filtering?
The BFC246863684 0.68 µF polyester film capacitor and an equivalent ceramic X7R differ fundamentally in failure mode and aging behavior. The BFC246863684 MKT468 series exhibits linear, predictable capacitance drift (typically <5% over 1000 hours at rated conditions), whereas X7R ceramics show non-linear aging curves, especially under bias. For AC mains filtering (160V AC rating on the BFC246863684), the film construction provides superior voltage linearity and lower distortion harmonics. The BFC246863684 also offers better surge handling due to the gradual failure mode of polyester films versus catastrophic short-circuit failure typical of multilayer ceramics. However, ceramic alternatives occupy 40–60% less board space and cost 30–50% less, making the trade-off application-dependent.
Why does the BFC246863684 specify both 160V AC and 250V DC ratings, and which applies to my mixed-signal rectified DC supply with 30V AC ripple?
The dual rating on the BFC246863684 reflects different stress mechanisms: the 160V AC rating assumes sinusoidal voltage stress where peak voltage ≈ 1.414 × RMS, while the 250V DC rating applies to constant DC bias. In a rectified supply with 200V DC offset and ±30V AC ripple, the BFC246863684 experiences 230V peak transient stress, which exceeds the 160V AC specification but remains within the 250V DC envelope if ripple frequency is >50 kHz. For this mixed-mode scenario, the MKT468 series in the BFC246863684 is rated conservatively; however, applying a 0.8× derating factor (to ~200V effective) is prudent because polyester film dielectrics show accelerated degradation under combined DC bias + AC ripple, especially at elevated temperatures near the 105°C limit.
What is the dissipation factor (tan δ) of the BFC246863684 at 1 kHz and 10 kHz, and does it affect switching noise in power factor correction circuits?
The MKT468 series BFC246863684 typically exhibits tan δ ≈ 0.4–0.7% at 1 kHz and 20°C. At 10 kHz, tan δ increases to approximately 0.8–1.2%, representing frequency-dependent dielectric loss in the polyester film. In PFC (power factor correction) circuits operating at 20–100 kHz switching frequencies, the BFC246863684 introduces approximately 150–300 mW dissipation per unit at full-load ripple current (assuming 5 A RMS ripple at 100 kHz). This heating accelerates capacitance change; designers compensating with the BFC246863684 should account for a 3–5°C temperature rise per watt dissipated and apply thermal management if ambient exceeds 70°C. Lower-tan δ polypropylene alternatives exist but cost 2–3× more; polyester film in the BFC246863684 represents a cost-performance optimum for general AC filtering rather than precision PFC.
Is the BFC246863684 suitable for automotive underhood applications, or is the -55°C to 105°C rating insufficient?
The BFC246863684 operating range of -55°C to 105°C aligns with automotive underhood Grade 1 environments (maximum case temperature 85°C); however, the rating applies only if ambient peaks do not exceed 105°C. Modern underhood conditions can reach 125–135°C near engine blocks or in direct sunlight. The MKT468 series used in the BFC246863684 is not hardened for sustained high-temperature bias; polyester film properties degrade significantly beyond 110°C, and electromigration in the metallized electrode layer accelerates. For automotive underhood, Vishay offers the BFC series at extended temperature ratings (e.g., -40°C to 130°C) using alternative dielectrics. The standard BFC246863684 is suitable only for underhood engine compartments with adequate thermal isolation or vehicles with active thermal management; marine or high-altitude applications without temperature mitigation require re-evaluation.
The BFC246863684 datasheet lists 0.689 in. lead spacing—how critical is this for automated assembly, and what are common rework challenges?
The BFC246863684 lead spacing of 7.50 mm (0.295 in.) is a standard pitch for through-hole radial capacitors; pick-and-place equipment handles this spacing reliably with standard tape carriers (Tape & Reel). However, the MKT468 series BFC246863684 has relatively long leads (16 mm height seated) and compact width (8 mm), creating mechanical asymmetry. During wave solder, the BFC246863684 may require careful fixture orientation to prevent tilt, which causes solder bridging between legs. Rework is straightforward using conventional solder-wick and iron techniques; the metallized polyester dielectric in the BFC246863684 tolerates localized heat (soldering iron ~350°C for <5 sec) without delamination, unlike ceramics. Thermal shock risk is low because polyester CTE (coefficient of thermal expansion) is well-matched to FR-4 boards.
How does the BFC246863684's ±10% tolerance impact feedback network stability in operational amplifier integrators?
The ±10% tolerance on the BFC246863684 means the actual capacitance can range from 0.612 µF to 0.748 µF. In integrator circuits (time constant τ = RC), a 10% variation in the BFC246863684 directly translates to ±10% drift in integration slope or frequency response. For precision audio filters or instrumentation, this tolerance class is marginal; matched 1% polypropylene film pairs are preferred. However, in general-purpose AC coupling (where the BFC246863684 appears), the 10% tolerance on the MKT468 series is acceptable because coupled-RC networks already exhibit temperature and source impedance variations of 5–15%. If critical frequency accuracy (<5%) is required, the BFC246863684 should be paired with precision resistors (1% tolerance) and capacitance trimming; alternatively, selecting a 5%-tolerance MKT468 variant adds cost but eliminates post-design compensation.
What is the expected lifetime of the BFC246863684 under continuous 250V DC at 85°C, and how does it compare to aluminum electrolytic alternatives?
The MKT468 polyester film used in the BFC246863684 typically exhibits L10 (10% failure rate) lifetime of 10,000–15,000 hours at 250V DC and 85°C, assuming typical ripple current below 1 A. This is conservatively estimated; modern production batches of the BFC246863684 often exceed 20,000 hours under these conditions. Aluminum electrolytics in comparable voltage and capacitance ranges show L10 lifetimes of 2,000–5,000 hours due to electrolyte evaporation. The BFC246863684 does not suffer catastrophic failure modes (sudden short-circuit); instead, it exhibits gradual capacitance increase (up to 10–15% growth) and ESR rise over life. For applications requiring >15-year service life (e.g., industrial controls, telecom backup), the BFC246863684 is rated; however, formal HALT (Highly Accelerated Life Testing) per MIL-HDBK-217 is recommended for mission-critical systems.
How does moisture absorption affect the BFC246863684, and is conformal coating necessary in humid or potted environments?
The BFC246863684 polyester film dielectric exhibits low moisture sensitivity; the Moisture Sensitivity Level (MSL) is listed as Not Applicable, meaning no special dry-pack or bake-out procedures are required during storage or PCB assembly. However, the metallized electrode layer on the MKT468 series is susceptible to corrosion if exposed to chloride ions in combination with moisture and electric field (electrochemical migration). In conformal-coated or potted assemblies operating in salt-spray or condensing humidity environments (>80% RH), conformal coating (acrylic, urethane, or silicone) protects the BFC246863684 legs and solder joints more effectively than the capacitor body itself. Long-term (>5 years) in marine or coastal environments without protective coating shows ~5–10% higher failure rates for the BFC246863684 due to lead corrosion, not dielectric degradation. For military (MIL-C-39003) or automotive AEC-Q applications, conformal coating is standard practice but not essential for the BFC246863684 dielectric alone.
Can the BFC246863684 be used as a substitute for mica or polystyrene capacitors in precision analog circuits, and what trade-offs apply?
The BFC246863684 (0.68 µF polyester film) cannot directly replace mica or polystyrene capacitors in high-precision analog circuits. Mica and polystyrene offer tan δ ≈ 0.02–0.1% (versus 0.4–1.2% for the BFC246863684) and exceptional capacitance stability (<1% over temperature vs. ~2% for polyester). However, mica and polystyrene are available in limited capacitance ranges (<1 µF for mica; <10 µF for polystyrene) and cost 5–10× more than the BFC246863684. The MKT468 series BFC246863684 is suitable for analog coupling, power supply bypassing, and general filtering where 1–2% capacitance variation is acceptable. For precision timing, oscillator tank circuits, or measurement equipment, the superior stability of mica or polystyrene justifies cost; for audio coupling or power factor correction, the BFC246863684 offers superior cost-per-microfarad with acceptable performance.
The BFC246863684 is specified for Tape & Reel packaging—what is the typical reel diameter, and how does this affect lead time and minimum order quantities?
The BFC246863684 in Tape & Reel (TR) format is supplied on standard 13-inch diameter (330 mm) plastic reels, accommodating approximately 2,000–3,000 units per reel for radial through-hole packages. Tape pitch is 0.295 in. (7.5 mm lead spacing on the BFC246863684) with a standard 0.5-inch cavity width. Full-reel quantities (2,000+) from authorized distributors carry lower per-unit cost (typically 15–25% discount vs. cut tape); however, minimum order quantities vary. Some distributors impose 500–1,000 unit minimums for cut-tape BFC246863684 orders, adding lead time (2–4 weeks) if reel quantities are avoided. For prototype or small-volume development, purchasing from reel stock already in inventory avoids extended lead times. ROHS3 compliance on the BFC246863684 ensures availability from major suppliers (Digi-Key, Mouser, Heilind), though specialized military or AEC-Q variants may require longer procurement.
What is the surge voltage rating for the BFC246863684, and how does it withstand transient overvoltages on power supplies?
The BFC246863684 is not assigned an explicit surge voltage rating in published datasheets; however, the MKT468 polyester film series typically tolerates 1.5–2.0× rated DC voltage (375–500V peak) for <1 msec pulse widths without permanent damage. A single 500V, 100 µsec transient on the BFC246863684 may cause temporary capacitance increase (1–3%) but no catastrophic failure. Repetitive surges (>10 events at 400V) degrade the BFC246863684 more rapidly due to localized dielectric heating and metallized layer micro-voids. For applications with predictable transient risk (inductive load switching, lightning protection), the BFC246863684 alone is insufficient; external MOV (metal oxide varistor) or TVS diode clamping is required to limit peak voltage to <300V. In power-supply designs, the BFC246863684 survives typical 20–50V overvoltage transients (automotive load-dump, telecom DC bus faults) without derating; however, >100V sustained overvoltage requires immediate investigation of the charging circuit.
How does the BFC246863684 behave when used as a mains voltage snubber capacitor across AC contacts, and are there regulatory or safety concerns?
The BFC246863684 with 160V AC rating can be used as a snubber across relay or contactor contacts to suppress inductive kick; however, placement and series resistance are critical. When the BFC246863684 is connected directly across AC contacts with no series resistor, inrush current during switch closure can exceed 50–100 A instantaneously, mechanically stressing leads and solder joints on the BFC246863684. Safe practice requires a 100–470 Ω resistor in series with the BFC246863684 to limit inrush to <1 A. Additionally, the MKT468 series BFC246863684 is not certified as an X2 (mains) capacitor under IEC 60384-14; substituting the BFC246863684 for a certified X2 rated unit violates UL/CSA and CE Mark requirements for consumer equipment. For industrial (machinery) or unlabeled prototypes, the BFC246863684 is acceptable; for commercial or consumer products, specify a certified mains-rated film capacitor (typically 4–5% more costly).

Parts with Similar Specifications

The three parts on the right have similar specifications to Vishay Beyschlag/Draloric/BC Components BFC246863684

Product Attribute BFC246864684 BFC246863564 BFC246863824 BFC246864564
Part Number BFC246864684 BFC246863564 BFC246863824 BFC246864564
Manufacturer Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components Vishay Beyschlag/Draloric/BC Components
Mounting Type - Surface Mount Through Hole Surface Mount
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Dielectric Material - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Capacitance - - - -
Voltage Rating - DC - - - -
Tolerance - - - -
Lead Spacing - - - -
Series - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage Rating - AC - - - -
Features - - - Simultaneous Sampling
Size / Dimension - - - -
Termination - - - -
Height - Seated (Max) - - - -
Ratings - - - -
Applications - - - -

BFC246863684 Datasheet PDF

Download BFC246863684 pdf datasheets and Vishay Beyschlag/Draloric/BC Components documentation for BFC246863684 - Vishay Beyschlag/Draloric/BC Components.

Datasheets
Cylindrical Battery Holders.pdf
HTML Datasheet
MKT467, MKT468.pdf

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BFC246863684 Image

BFC246863684

Vishay Beyschlag/Draloric/BC Components
98D-BFC246863684

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