BFC280811229 Datasheet, PDF (4/5 Pages) Vishay Siliconix – Ø 7.5 mm Film Dielectric Trimmers

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BFC2 808 .....
Vishay BCcomponents
TEST PROCEDURES AND REQUIREMENTS
IEC
60418-1
CLAUSE
IEC 60068
TEST
METHOD
TEST
23
T
Soldering:
PROCEDURE
Ta
Solderability
Solder bath immersion 3 mm;
235 °C; 2 s
Tb
Resistance to heat
24
Eb
Impact bump
Solder bath: 260 °C; 10 s
4000 ± 10 bumps; 40 g; 6 ms
25
Fc
Vibration
26
Climatic sequence:
Frequency 10 Hz to 55 Hz;
amplitude 0.35 mm;
1.5 h
26.1
B
Dry heat
16 h at upper category
temperature
26.2
D
Damp heat accelerated,
1 cycle; 24 h; + 40 °C;
first cycle
95 % to 100 % RH
26.3
Aa
Cold
16 h; - 40 °C
26.5
Damp heat accelerated,
1 cycle; 24 h; + 40 °C; 
remaining cycles
95 % to 100 % RH
27
Ca
Damp heat steady state
21 days; + 40 °C;
90 % to 95 % RH
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)
REQUIREMENTS
Good wetting,
no mechanical damage
No mechanical damage
C/C:  0.6 %;
no mechanical damage
C/C:  0.6 %;
no mechanical damage
C/C:  4 %
tan :  10 x 10^-4 for C_max. < 27 pF;
tan :  70 x 10^-4 for C_max.  27 pF;
tan :  80 x 10^-4 for C_max.  40 pF

R_ins.:  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 C_max. < 33 pF;
1 mNm to 25 mNm for C_max.  33 pF
C/C:  5 %

tan :  30 x 10^-4 for C_max. < 27 pF;
tan :  70 x 10^-4 for C_max.  27 pF;
tan :  80 x 10^-4 for C_max.  40 pF

R_ins.:  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 C_max. < 33 pF;
1 mNm to 25 mNm for C_max.  33 pF
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 C_max. < 33 pF;
1 mNm to 25 mNm for C_max.  33 pF
Revision: 20-Jun-13
4
Document Number: 28527
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