Document Number 28531 For technical questions, contact: dc-film@vishay.com www.vishay.com
Revision: 18-Oct-07 333
BFC2 809 080..
Vishay BCcomponents
Film Dielectric Trimmers
FEATURES
•High temperature type
•Housing dimensions:
10 mm x 11 mm x 11 mm
•For a basic grid of 2.54 mm
•Vertical version with a round head
•Top and bottom adjustment
APPLICATIONS
•For fine adjustment in professional applications
DESCRIPTION:
The trimmers consist of a polysulphone housing, brass rotor
and plated brass stator with PTFE film as the dielectric. The
stator plate tags are heat sealed to the housing.
The rotor contact surfaces are plated to ensure a long life
and a stable contact even under severe climatic conditions.
A colored dot indicates the maximum capacitance.
Flux absorption between the vanes is prevented.
Cleaning with solvents is not advised.
QUALITY LEVEL:
Sampling and data evaluation for quality level in accordance
with “MIL-STD-105D” and “IEC 60410”:
< 0.15 % major defects
< 0.65 % minor defects
Each capacitor is tested for minimum Cmax and is also
subjected to the full test voltage.
Cmin/Cmax:
4/38 to 5/57 pF
RATED VOLTAGE (DC):
250 V
LIFE OF TRIMMER:
Maximum 10 cycles: rotation in 180° only (the electrical and
mechanical performance is not guaranteed if rotated beyond
10 cycles)
TEST VOLTAGE (DC) FOR 1 MINUTE:
500 V
MAXIMUM CONTACT RESISTANCE:
5 mΩ
MINIMUM INSULATION RESISTANCE:
10 000 MΩ
CATEGORY TEMPERATURE RANGE:
- 40 to + 125 °C
CLIMATIC CATEGORY (IEC 60068):
40/125/21
MINIMUM STORAGE TEMPERATURE:
- 55 °C
RELATED SPECIFICATION:
IEC 60418-1 and 4
EFFECTIVE ANGLE OF ROTATION:
180° (rotation in 180° only, see “Life of Trimmer”)
OPERATING TORQUE:
2 to 25 mNm
MAXIMUM AXIAL THRUST:
2 N
e3