Document Number 28529 For technical questions, contact: dc-film@vishay.com www.vishay.com
Revision: 18-Oct-07 325
BFC2 809 05...
Vishay BCcomponents
Film Dielectric Trimmers
FEATURES
•High temperature type
•Housing dimensions:
6mmx8mmx9mm
•For a basic grid of 2.54 mm
•Top and bottom adjustment
•Round head
•Vertical version
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 coloured dot indicates the maximum capacitance.
Cleaning with solvents is not advised.
Versions are available with either a round head or hexagonal
head.
Both versions have top adjustment by means of a
screwdriver or trimming key and bottom adjustment by
means of a key.
QUALITY LEVEL:
Sampling and data evaluation for quality level in accordance
with “MIL-STD-105D” and “IEC 60 410”:
< 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:
0.5/2 to 2/18 pF
RATED VOLTAGE (DC):
300 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:
600 V
MAXIMUM CONTACT RESISTANCE:
5 mΩ
MINIMUM INSULATION RESISTANCE BETWEEN
STATOR AND ROTOR:
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:
Cmax < 3.5 pF
1 to 15 mNm
Cmax ≥ 3.5 pF
1 to 20 mNm
MAXIMUM AXIAL THRUST:
2 N
www.vishay.com For technical questions, contact: dc-film@vishay.com Document Number 28529
326 Revision: 18-Oct-07
BFC2 809 05...
Vishay BCcomponents Film Dielectric Trimmers
5.08 ± 0.2
3.7
± 0.2
1.1
± 0.2
9
max.
∅ 2.2
∅ 2.2
Z
0.6
0.5 min.
1.1 max.
color mark
1)
sprue
0.6 ± 0.1
0.85
max.
0.5
± 0.15
∅ 1.4
DETAIL Z
turned 90°
3 ± 0.2
6.7
max.
6.4
max.
7.4 max.
Trimmers BFC2 809 05... series, with round heads
ADJUSTMENT
For top adjustment a screwdriver or trimming key can be used; for
bottom adjustment a key is required as shown below
1.2 (2×)
1.9
5.08
2.3
± 0.1
R
S
Hole pattern
∅ 2.2
2 min.
0.7 + 0.1
0
0.6 + 0.2
0
∅ 1.5
+ 0.1
0
Bottom adjustment key
Dimensions in millimeters
BFC2 809 05...
Film Dielectric Trimmers Vishay BCcomponents
Document Number 28529 For technical questions, contact: dc-film@vishay.com www.vishay.com
Revision 18-Oct-07 327
ORDERING INFORMATION
Cmin/Cmax
(pF)
CATALOG NUMBER BFC2 809 05...
TOP AND BOTTOM ADJUSTMENT
ROUND HEAD ROUND HEAD AND
FLUX GUARD
0.5/2 011 -
1.2/3.5 215 001
1.8/10 216 002
2/18 217 003
MOUNTING
The trimmer can be mounted on printed-circuit boards with a
minimum hole diameter of 2.54 mm.
PACKAGING
Blister packs of 70 units each. For smallest packaging
quantity (SPQ) see Electrical Data Table.
ELECTRICAL DATA
Note:
1. C: 60 % to 80 % of Cmax; Tamb: from + 20 °C to + 125 °C
GUARANTEED
MAX. Cmin/
MIN. Cmax
AT 200 kHz
(pF)
SHAPE
OF HEAD FIG.
TAN δ AT
Cmax x10-4TEMP.
COEFF. 1)
(10-6/K)
MIN. fres
AT Cmax
(MHz)
COL.
OF
DOT
SPQ
CATALOG
NUMBER
BFC2 ... .....
1MHz 100MHz
0.5/2 round 1 ≤ 10 ≤ 20 - 250 ± 350 1200 none 700 .... 809 05011
1.2/3.5 round 1 ≤ 10 ≤ 20 - 250 ± 350 850 orange 700 .... 809 05001
700 .... 809 05215
1.8/10 round 1 ≤ 10 ≤ 20 - 250 ± 350 1200 none 700 .... 809 05002
580 white 700 .... 809 05216
2/18 round 1 ≤ 10 ≤ 25 - 250 ± 350 360 red 700 .... 809 05217
700 .... 809 05003
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 ΔC/C: ≤ 2.5 %; 4 % for 2 pF
19 thrust axial thrust of 2 N ΔC/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 hours at lower and
0.5 hours at upper category
temperature
ΔC/C: ≤ 2.5 %
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328 Revision: 18-Oct-07
BFC2 809 05...
Vishay BCcomponents Film Dielectric Trimmers
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 ΔC/C: ≤ 0.6 %;
no mechanical damage
25 Fc vibration frequency 10 to 55 Hz;
amplitude 0.35 mm;
1.5 hours
ΔC/C: ≤ 0.6 %;
no mechanical damage
26 climatic sequence: ΔC/C: ≤ 2.5
26.1 B dry heat 16 hours at upper category
temperature
tan δ: ≤ 10 x 10-4 for Cmax <18pF;
tan δ: ≤ 40 x 10-4 for Cmax ≥18 pF
Rins: ≥10 000 MΩ;
rotor contact R: ≤ 5mΩ
26.2 D damp heat accelerated,
first cycle
1 cycle; 24 hours; + 40 °C;
95 to 100 % RH
voltage proof:
600 V for 1 minute
26.3 Aa cold 16 hours; - 40 °C visual examination:
no mechanical damage
26.5 damp heat accelerated,
remaining cycles
1 cycle; 24 hours; + 40 °C;
95 to 100 % RH
operating torque:
1to20mNm
27 Ca damp heat steady state 21 days; + 40 °C;
90 to 95 % RH
ΔC/C: ≤ 2.5 %
tan δ: ≤ 10 x 10-4 for Cmax <18pF;
tan δ: ≤ 25 x 10-4 for Cmax ≥18 pF
Rins: ≥10 000 MΩ;
rotor contact R: ≤ 5mΩ
voltage proof:
600 V for 1 minute
visual examination:
no mechanical damage
operating torque:
1to20mNm
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)
ΔC/C: ≤ 0.3 %; ≤ 2.5 % for 2 pF
ΔC/C after axial thrust: ≤ 0.3 %;
rotor contact R: ≤ 5mΩ
voltage proof:
600 V for 1 minute
visual examination:
no mechanical damage
operating torque:
1to20mNm
IEC
60418-1
CLAUSE
IEC 60068
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
Document Number: 91000 www.vishay.com
Revision: 18-Jul-08 1
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All product specifications and data are subject to change without notice.
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or in any other disclosure relating to any product.
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therein, which apply to these products.
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