Document Number 28532 For technical questions contact: dc-film@vishay.com www.vishay.com
Revision: 18-Oct-07 337
BFC2 809 090..
Vishay BCcomponents
Film Dielectric Trimmers
FEATURES
•High temperature type
•Housing dimensions:
8mmx9mmx10mm
•For a basic grid of 2.54 mm
•Versions available
with 1 or 2 rotor contacts
•Top and bottom adjustment
•Vertical version
APPLICATIONS
•For fine adjustment 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 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:
1.4/5.5 to 3/18 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:
Cmax = 5.5 pF
1 to 15 mNm
Cmax = 9 AND 18 pF
1 to 20 mNm
MAXIMUM AXIAL THRUST:
2 N
RoHS
COMPLIANT
Pb-free
e3
www.vishay.com For technical questions contact: dc-film@vishay.com Document Number 28532
338 Revision: 18-Oct-07
BFC2 809 090..
Vishay BCcomponents Film Dielectric Trimmers
Trimmers BFC2 809 090.. series, with one rotor contact
0.6 ± 0.1
0.85
max.
0.5
± 0.15
∅ 1.6
DETAIL Z
turned 90°
4
± 0.5
10
max.
∅ 2.5
∅ 3 Z
0.6
0.7
1.2 max.
colour mark
1)
sprue
1 (4 × )
0.8 min.
(4 × )
0.6 ± 0.1
0.5
± 0.15
0.95
± 0.2
∅ 1.6
DETAIL Z
turned 90°
1.2
max.
colour mark1)
sprue
1 (4 × )
0.8 min.
(4 × )
4
± 0.5
10.2
max.
∅ 2.5
∅ 3
Z
0.6
0.7
3.8
± 0.1
8
max.
7.7
max.
8.8 max.
rotor (2 × ) stator
Trimmers BFC2 809 090.. series, with two rotor contacts
ADJUSTMENT
For top adjustment a screwdriver or trimming key can be used; for
bottom adjustment a key is required as shown below
1.3
7.64
R
SR
1.3
5.08
5.08
The large hole is for bottom
adjustment and the diameter is
determined by user’s requirements
Hole pattern
R = rotor, S = stator.
The large hole is for bottom
adjustment and the diameter is
determined by user’s requirements
∅ 3
2 min.
0.7 + 0.1
0
0.6 + 0.2
0
∅1.7 + 0.1
0
Bottom adjustment key
MOUNTING
The trimmer can be mounted on printed-circuit boards with a
basic grid of 2.54 mm and a minimum hole diameter of
1.25 mm.
PACKAGING
Blister packs of 105 units each. For smallest packaging
quantity (SPQ) see Electrical Data Table.
Dimensions in millimeters
BFC2 809 090..
Film Dielectric Trimmers Vishay BCcomponents
Document Number 28532 For technical questions contact: dc-film@vishay.com www.vishay.com
Revision 18-Oct-07 339
ORDERING INFORMATION
ELECTRICAL DATA
Notes:
1. PTFE = polytetrafluorethylene.
2. C: 60 % to 80 % of Cmax; Tamb: from + 20 °C to + 125 °C.
3. Version with one rotor contact.
4. Version with two rotor contacts.
TEST PROCEDURES AND REQUIREMENTS
Cmin/Cmax
(pF)
CATALOG NUMBER BFC2 809 090..
ROUND HEAD TOP AND BOTTOM ADJUSTMENT
VERSION WITH 1 ROTOR CONTACT VERSION WITH 2 ROTOR CONTACTS
1.4/5.5 04 01
2/9 05 02
3/18 06 03
GUARANTEED
MAX. Cmin/
MIN. Cmax
at 200 kHz
(pF)
SHAPE
OF HEAD DIEL.
tan δ at
Cmax X 10-4 TEMP.
COEFF. 2)
(10-6/K)
MIN. fres
at Cmax
(MHz)
COL.
OF
DOT
SPQ
CATALOG
NUMBER
BFC2 ... .....
1 MHz 100 MHz
1.4/5.5
round
PTFE 1) ≤ 10 ≤ 15 - 250 ± 350
850 green
525 .... 809 09004 3)
round 525 .... 809 09001 4)
2/9
round
580 white
525 .... 809 09005 3)
round 525 .... 809 09002 4)
3/18
round
360 red
525 .... 809 09006 3)
round 525 .... 809 09003 4)
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: ≤ 2.0 %; ≤ 3.0 % for 9 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: ≤ 3 %
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: ≤ 0.5 %;
no mechanical damage
25 Fc vibration frequency 10 to 55 Hz;
amplitude 0.35 mm;
1.5 hours
ΔC/C: ≤ 0.3 %;
no mechanical damage
www.vishay.com For technical questions contact: dc-film@vishay.com Document Number 28532
340 Revision: 18-Oct-07
BFC2 809 090..
Vishay BCcomponents Film Dielectric Trimmers
26 climatic sequence: ΔC/C: ≤ 2.5 %
26.1 B dry heat 16 hours at upper category
temperature
tan δ: ≤ 10 x 10-4
Rins: ≥ 10000 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:
500 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: ≤ 3 %
tan δ: ≤ 10 x 10-4
Rins: ≥ 10 000 MΩ;
rotor contact R: ≤ 5mΩ
voltage proof:
500 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: ≤ 3 %
ΔC/C after axial thrust: ≤ 0.3 %;
rotor contact R: ≤ 5mΩ
voltage proof:
500 V for 1 minute
visual examination:
no mechanical damage
operating torque:
1to20mNm
IEC
60418-1
CLAUSE
IEC 60068
TEST
METHOD
TEST PROCEDURE REQUIREMENTS
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www.vishay.com Vishay
Revision: 12-Mar-12 1Document Number: 91000
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