BFC2 808 .....
www.vishay.com Vishay BCcomponents
Revision: 20-Jun-13 1Document Number: 28527
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
Ø 7.5 mm Film Dielectric Trimmers
FEATURES
• Housing diameter 7.5 mm
• For a basic grid of 2.54 mm (0.1") or 2.50 mm
• Top and bottom or top adjustment
• Vertical and horizontal versions
•Round head
• Mounting: Radial
• Material categorization: For definitions of compliance
please see www.vishay.com/doc?99912
APPLICATIONS
• Antennas
• Impedance matching circuits
• Medical
•RF
• For consumer and industrial equipment
QUICK REFERENCE DATA
Rated DC voltage 250 VDC
Test DC voltage for 1 min 500 VDC
Maximum contact resistance 10 m
Minimum insulation resistance 10 000 M
Category temperature range PP - 40 °C to + 70 °C
PE, PTFE, PET - 40 °C to + 85 °C
Climatic category (IEC 60068) PP 40/070/21
PE, PTFE, PET 40/085/21
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 Cmax. < 33 pF 1 mNm to 15 mNm
Cmax. 33 pF 1 mNm to 25 mNm
Maximum axial thrust 2 N
Capacitance range (Cmin./Cmax.) 1.4 pF/5.5 pF to 3 pF/33 pF
Life of trimmer Maximum 10 cycles: Rotation in 180° only (the electrical and mechanical
performance is not guaranteed if rotated beyond 10 cycles)
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.
BFC2 808 .....
www.vishay.com Vishay BCcomponents
Revision: 20-Jun-13 2Document Number: 28527
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
DIMENSIONS in millimeters
Trimmers BFC2 808 ..... series, vertical version Trimmers BFC2 808 ..... series, horizontal version
Hole pattern
ADJUSTMENT
For top adjustment a screwdriver or trimming key can be used; for bottom adjustment a key is required as shown below.
Bottom adjustment key
3 ± 0.2
10 (1)
max.
Ø 2.5
Z
0.6
0.7
ROUND HEAD
4.5 ± 0.2 7.6 ± 0.1
8
max.
4 ± 0.5
0.6 ± 0.1 0.5
± 0.15
0.95 ± 0.2
Ø 1.6DETAIL Z
turned 90°
1.15 max.
Stator
Rotor (2 x)
Ø 2.5
Z
0.6
0.7
4.5
± 0.2 7.6
± 0.1 8.6
max.
4 ± 0.5
8.6 ± 0.2
110° ± 5°
0.6 ± 0.1 0.5
± 0.15
0.95
± 0.2
Ø 1.6
DETAIL Z
turned 90°
10
max.
50
- 0.1
R
SR
1.3
5.08
5.08
R = Rotor, S = Stator
The large hole is for bottom
adjustment and the diameter is
determined by user’s requirements.
1.3
2.5
7.5
RR
S
R = Rotor, S = Stator
Ø 3
2 min.
Ø 1.7 + 0.1
0
0.7 + 0.1
0
0.6 + 0.2
0
BFC2 808 .....
www.vishay.com Vishay BCcomponents
Revision: 20-Jun-13 3Document Number: 28527
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
MOUNTING
The trimmer can be mounted on printed-circuit boards with
a grid of 2.50 mm or 2.54 mm and a minimum hole diameter
of 1.25 mm.
PACKAGING
Bulk packaged in cardboard boxes lined with expanded
plastic. For smallest packaging quantity (SPQ)
see “Electrical Data” table.
ORDERING INFORMATION
Cmin./Cmax.
(pF)
CATALOG NUMBER BFC2 808 .....
VERTICAL VERSION HORIZONTAL VERSION
ROUND HEAD ROUND HEAD
TOP AND BOTTOM ADJUSTMENT TOP ADJUSTMENT ONLY TOP AND BOTTOM ADJUSTMENT
1.4/5.5 11558 00004 51558
2/9 00018 - -
2/10 11109 00005 51109
2/10 - 11004 -
2/15 11159 - -
2/18 00016 - -
2.5/20 - 11006 -
2.5/22 11229 00006 51229
3/33 11339 - -
ELECTRICAL DATA
GUARANTEED
MAX. Cmin.
/
MIN. Cmax.
AT 200 kHz
(pF)
SPINDLE
SHAPE
OF
HEAD
ADJ.
MODE DIEL.
tan
AT Cmax. x 10-4 TEMP.
COEFF.
(10-6/K)
MIN. fres
AT Cmax.
(MHz)
COL.
OF
BASE
SPQ
CATALOG
NUMBER
BFC2 ... .....
1 MHz 100 MHz
1.4/5.5 Vertical Round Top + bottom
PE 10 25 - 250 ± 350 850 Grey
1400 ....80811558
Top 1400 ....80800004
Horizontal Round Top + bottom 1200 ....80851558
2/9 Vertical Round Top + bottom PTFE 10 15 - 150 ± 800 400 Yellow 1400 ....80800018
2/10 Vertical Round Top + bottom
PP 10 25 - 250 ± 800 480 Yellow
1400 ....80811109
Top 1400 ....80800005
Horizontal Round Top + bottom 1200 ....80851109
2/15 Vertical Round Top + bottom PP 10 25 - 250 ± 600 450 Blue 1400 ....80811159
2/18 Vertical Round Top + bottom PTFE 10 15 - 250 ± 350 350 Green 1400 ....80800016
2.5/20 Vertical Round Top PET 160 - 0 ± 1100 250 Green 1000 ....80811006
2.5/22 Vertical Round Top + bottom
PP 10 25 - 200 ± 500 350 Green
1400 ....80811229
Top 1400 ....80800006
Horizontal Round Top + bottom 1200 ....80851229
3/33 Vertical Round Top + bottom PP 10 - - 250 ± 350 300 Brown 1400 ....80811339
TEST PROCEDURES AND REQUIREMENTS
IEC
60418-1
CLAUSE
IEC 60068
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
4.2 Method of mounting Method A
14 Capacitance drift After TC measurement C/C: 1 % for Cmax. < 40pF;
C/C: 2.5 % for Cmax. 40pF
19 Thrust Axial thrust of 2N C/C: 0.3 %
21 Robustness of terminations:
21.1 Ua Tensile 1N No damage
21.2 Ub Bending 1 cycle No damage
22 Na Rapid change of temperature 1 cycle; 0.5 h at lower and 0.5 h
at upper category temperature
C/C: 2 %
BFC2 808 .....
www.vishay.com Vishay BCcomponents
Revision: 20-Jun-13 4Document Number: 28527
For technical questions, contact: dc-film@vishay.com
THIS DOCUMENT IS SUBJECT TO CHANGE WITHOUT NOTICE. THE PRODUCTS DESCRIBED HEREIN AND THIS DOCUMENT
ARE SUBJECT TO SPECIFIC DISCLAIMERS, SET FORTH AT www.vishay.com/doc?91000
23 T Soldering:
Ta Solderability Solder bath immersion 3mm;
235°C;2s
Good wetting,
no mechanical damage
Tb Resistance to heat Solder bath: 260°C;10s No mechanical damage
24 Eb Impact bump 4000 ± 10bumps; 40g;6ms C/C: 0.6 %;
no mechanical damage
25 Fc Vibration Frequency 10Hz to55Hz;
amplitude 0.35mm;
1.5 h
C/C: 0.6 %;
no mechanical damage
26 Climatic sequence: C/C: 4 %
26.1 B Dry heat 16h at upper category
temperature
tan : 10 x 10-4 for Cmax. < 27pF;
tan : 70 x 10-4 for Cmax. 27pF;
tan : 80 x 10-4 for Cmax. 40pF
Rins.: 10 000M;
rotor contact R: 10m
26.2 D Damp heat accelerated,
first cycle
1 cycle; 24 h; + 40 °C;
95% to100 % RH
Voltage proof:
500V for 1min
26.3 Aa Cold 16h; - 40 °C Visual examination:
No mechanical damage
26.5 Damp heat accelerated,
remaining cycles
1 cycle; 24 h; + 40 °C;
95 % to 100 % RH
Operating torque:
1mNm to15mNm for Cmax. < 33pF;
1mNm to25mNm for Cmax. 33pF
27 Ca Damp heat steady state 21days; + 40 °C;
90% to95 % RH
C/C: 5 %
tan : 30x10-4 for Cmax. < 27pF;
tan : 70x10-4 for Cmax. 27pF;
tan : 80x 10-4 for Cmax. 40pF
Rins.: 10 000M;
rotor contact R: 10m
Voltage proof:
500V for 1min
Visual examination:
No mechanical damage
Operating torque:
1mNm to15mNm for Cmax.< 33pF;
1mNm to25mNm for Cmax. 33pF
29 Mechanical endurance 10cycles
Maximum 10 cycles: Rotation
in 180° only (the electrical and
mechanical performance is not
guaranteed if rotated beyond
10 cycles)
C/C: 1.5 %
C/C after axial thrust: 0.3 %;
rotor contact R: 10m
Voltage proof:
500V for 1min
Visual examination:
No mechanical damage
Operating torque:
1mNm to15mNm for Cmax.<33pF;
1mNm to25mNm for Cmax. 33pF
TEST PROCEDURES AND REQUIREMENTS
IEC
60418-1
CLAUSE
IEC 60068
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
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Revision: 02-Oct-12 1Document Number: 91000
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