BFC237051682 Vishay, BFC237051682 Datasheet - Page 14

• Manufacturer Part Number: BFC237051682
• Description: Capacitor,Polyester (MYLAR),6.8nF,400VDC,10-% Tol,10+% Tol
• Manufacturer: Vishay
• Series: MKT 370r

Specifications of BFC237051682

• Capacitance: 6800pF
• Voltage - Ac: 220V
• Voltage - Dc: 400V
• Dielectric Material: Polyester, Metallized
• Tolerance: ±10%
• Operating Temperature: -55°C ~ 105°C
• Mounting Type: Through Hole
• Package / Case: Radial
• Size / Dimension: 0.284" L x 0.098" W (7.20mm x 2.50mm)
• Height: 0.256" (6.50mm)
• Termination: PC Pins
• Lead Spacing: 0.200" (5.08mm)
• Features: General Purpose
• Voltage Rating: 400 Volts
• Termination Style: Radial
• Product: Metallized Polyester Film Capacitors
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Esr (equivalent Series Resistance): -
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 2222 370 51682; 222237051682; BC1678; BFC2 370 51682; BFC2 370 51682

MKT370
Vishay BCcomponents
APPLICATION NOTE AND LIMITING CONDITIONS
These capacitors are not suitable for mains applications as across-the-line capacitors without additional protection, as described
hereunder. These mains applications are strictly regulated in safety standards and therefore electromagnetic interference
suppression capacitors conforming the standards must be used.
• For capacitors connected in parallel, normally the proof voltage and possibly te rated voltage must be reduced. For information
To select the capacitor for a certain application, the following conditions must be checked:
1. The peak voltage (U
2. The peak-to-peak voltage (U
3. The voltage peak slope (dU/dt) shall not exceed the rated voltage pulse slope in an RC-circuit at rated voltage and without
4. The maximum component surface temperature rise must be lower than the limits (see figure max. allowed component
5. Since in circuits used at voltages over 280 V peak-to-peak the risk for an intrinsically active flammability after a capacitor
6. When using these capacitors as across-the-line capacitor in the input filter for mains applications or as series connected with
Voltage Conditions for 6 Above
EXAMPLE
C = 330 nF - 63 V used for the voltage signal shown in next drawing.
U
The ambient temperature is 35 °C
Checking conditions:
1.The peak voltage U
2.The peak-to-peak voltage 40 V is lower than 2√2 x 40 V
3.The voltage pulse slope (dU/dt) = 40 V/100 µs = 0.4 V/µs
4.The dissipated power is 16.2 mW as calculated with fourier terms
5. Not applicable
6. Not applicable
Voltage Signal
www.vishay.com
90
P-P
ALLOWED VOLTAGES
Maximum continuous RMS voltage
Maximum temperature RMS-overvoltage (< 24 h)
Maximum peak voltage (V
depending of the capacitance value and the number of parallel connections contact:
This is lower than 60 V/µs (see specific reference data for each version)
The temperature rise for W
This is lower than 15 °C temperature rise at 35 °C, according figure max. allowed component temperature rise
ringing. If the pulse voltage is lower than the rated DC voltage, the rated voltage pulse slope may be multiplied by U
divided by the applied voltage.
For all other pulses following equation must be fulfilled:
T is the pulse duration
temperature rise).
breakdown (short circuit) increases, it is recommended that the power to the component is limited to 100 times the values
mentioned in the table: “Heat conductivity”
an impedance to the mains the applicant must guarantee that the following conditions are fulfilled in any case (spikes and
surge voltages from the mains included).
= 40 V; U
P
= 35 V; T
P
P
= 35 V is lower than 63 V
) shall not be greater than the rated DC voltage (U
O-P
.
1
= 100 µs; T
) (< 2 s)
max.
P-P
Voltage
= 3.5 mm and pitch = 5 mm will be 16.2 mW/3.0 mW/°C = 5.4 °C
) shall not be greater than 2
U
P
For technical questions, contact:
2
= 200 µs
T
1
DC
T
2
MKT Radial Potted Type
DC Film Capacitors
AC
U
2 x
P-P
= 113 U
√
T

0
2 x U


dU
------ -
dt
[e-mail]


Rac
2
P-P
T
x dt
1.25 x U
amb
1.6 x U
to avoid the ionisation inception level
U
<
Rdc
≤ 85 °C
Rac
U
Rdc
Rdc
)
Rac
x


dU
------ -
dt


[e-mail]
rated
Time
85 °C < T
See “Max. AC voltage as function
85 °C < T
of temperature CBB952” per
characteristics
amb
Document Number: 28108
amb
1.3 x U
≤ 105 °C for > 63 V
U
≤ 100 °C for 63 V
Revision: 22-Dec-10
Rac
Rdc
Rdc
and