BFC2808 Datasheet, PDF (4/6 Pages) Vishay Siliconix – 5 mm Film Dielectric Trimmers

BFC2 808 .....
Vishay BCcomponents
Ø 5 mm Film Dielectric Trimmers
ECONOMIC VERSIONS WITH ROUND HEAD
REFERENCE
C_min /C_max
(pF)
1.5/7
1.6/15
3/20
3.5/27
TAN δ AT
C_max x 10^-4
(1 MHz)
≤ 70
≤ 70
≤ 70
≤ 70
TEMP.
COEFF.
(10^-6/K)
- 50 ± 550
- 50 ± 550
- 50 ± 550
- 100 ± 400
COLOUR
OF
BASE
grey
blue
green
red
SMALLEST
PACKAGING
QUANTITY
1000
1000
1000
1000
CATALOG
NUMBER
BFC2 ... .....
.... 808 20126
.... 808 20127
.... 808 20123
.... 808 20128
TEST PROCEDURES AND REQUIREMENTS
IEC
60 418-1
CLAUSE
4.2
IEC
60 068
TEST
METHOD
TEST
method of mounting
PROCEDURE
method A
14
capacitance drift
after TC measurement
19
thrust
axial thrust of 2 N
21
robustness of terminations:
21.1
Ua
tensile
1N
21.2
Ub
bending
1 cycle
22
Na rapid change of temperature
1 cycle; 0.5 hours at lower and
0.5 hours at upper category
temperature
23
T
soldering:
Ta
solderability
Tb
resistance to heat
solder bath immersion 3 mm;
235 °C; 2 s
solder bath: 260 °C; 10 s
24
Eb impact bump
4000 ± 10 bumps; 40 g; 6 ms
25
Fc
vibration
26
climatic sequence:
frequency 10 to 55 Hz;
amplitude 0.75 mm;
1.5 hours
26.1
B
dry heat
16 hours at upper category
temperature
26.2
D
damp heat accelerated,
first cycle
26.3
Aa
cold
26.5
damp heat accelerated,
remaining cycles
1 cycle; 24 hours; + 40 °C;
95 to 100 % RH
16 hours; - 40 °C
1 cycle; 24 hours; + 40 °C;
95 to 100% RH
REQUIREMENTS
ΔC/C: ≤ 3 % for C_max ≤ 10 pF
ΔC/C: ≤ 2 % for C_max > 10 pF
ΔC/C: ≤ 0.4 %
no damage
no damage
ΔC/C: ≤ 2.5 %
good wetting
no mechanical damage
no mechanical damage
ΔC/C: ≤ 1 %;
no mechanical damage
ΔC/C: ≤ 1 %;
no mechanical damage
ΔC/C: ≤ 4 %
tan δ or PP and PTFE foil: ≤ 15 x 10^-4
tan δ for PC foil: ≤ 80 x 10^-4
R_ins: ≥ 10 000 MΩ
rotor contact R: ≤ 10 mΩ
voltage proof:
300 V for 1 minute
visual examination:
no mechanical damage
operating torque:
1 to 20 mNm for C_max < 20 pF;
1 to 30 mNm for C_max ≥ 20 pF
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For technical questions contact: [e-mail]
Document Number 28526
Revision: 11-Oct-07