TOCOS AMERICA, INC.
1177 East Tower Road, Schaumburg, IL 60173 Tel: 847-884-6664 Fax: 847-884-6665 E-mail: sales
@
tocos.com www.tocos.com
77
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . . . . 10Ω to 1MΩ
(standard 1, 2 & 5 sequence )
Resistance Tolerance . . . . . . . . . . . . . . .
%
10% and
%
20%
End Resistance . . . . . . . . . . 1% or 3Ω, whichever is greater
Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
Peak Noise (C.R.V.) . . . . . . 2% or 3Ω, whichever is greater
Power Rating . . . . . . . 0.75 watt at
~
70&C, 0 watt at
~
125&C
Maximum Input Voltage . . . . . . . . 300VDC or power rating,
whichever is smaller
Temperature Coefficient . . .
%
100 ppm/&C, 200Ω to 500kΩ
%2
50ppm /&C, other values
Insulation Resistance . . . . . . 100MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . 900VAC, 1 minute
Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 270&
%
10&
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 300&
%
10&
Shaft Torque . . . . . . . . . . . . . . 300 gf
•
cm (4.16 oz
•
in) max.
Stop Strength . . . . . . . . . . . . . . 1 kgf
•
cm (12.86 oz
•
in) min.
Flammability of Plastic Materials . . . . . . . Meets UL 94V-0
Nominal Weight . . . . . . . . . . 1.4g (P); 1.8g (S, X, R) no shaft
1.8g (P); 2.2g (S, X, R) 5mm metal shaft
2.1g (P); 2.5g (S, X, R) 10mm metal shaft
1.7g (P); 2.1g (S, X, R) with knurled plastic shaft
Marking . . . . . . . . . Resistance code, date code, model type
Environmental
Temperature Range . . . . . . . . . . . . . . . . . !55&Cto
~
125&C
High Temperature Exposure . . . . . . . . .
~
125&C, 250 hours
∆T/R
)
%
3%, S.S.
)
%
1%
Load Life . . . . . . . . . . . . . . . .
~
70&C, 0.75 watt, 1,000 hours
∆T/R
)
%
3%, S.S.
)
%
1%
Thermal Shock . . . . . . . . . . . . . . . . . . . . . . !55&C,
~
125&C,
30 minutes each, 5 cycles
∆T/R
)
%
2%, S.S.
)
%
1%
Shock . . . . . . . . . . . . . 50G, 6ms, 6 directions, 3 times each
∆T/R
)
%
1%, S.S.
)
%
1%
Vibration . . . . . . . . . . . . . . . . 10-2,000Hz, 1.5mm amplitude,
20G, 12 hours
∆T/R
)
%
1%, S.S.
)
%
1%
Humidity . . . . . . . . . . . . . . . . . . . . . . . .
~
40&C, 90-95%RH,
0.75 watt, 500 hours
∆T/R
)
%
3%, S.S.
)
%
1%
Moisture Resistance . . . . . .
!
10&C to
~
65&C, 80-98%RH,
0.75 watt, 10 cycles, 240 hours
∆T/R
)
%
3%
Soldering Heat Resistance . . . . . . . . . . . 350&C, 3 seconds
∆T/R
)
%
1%
Seal Test . . . . . . . . . . . . . . . .
~
85&C, hot water for 1 minute
Rotational Life . . . . . . . . 5,000 cycles without discontinuity
∆T/R
)
%
5%)
∆T/R = Total Resistance Change; S.S. = Setting Stability ( voltage ratio)
GF12 Series
12mm Square, Single-Turn, Through-Hole Sealed Cermet Trimmers
TOCOS
®
POTENTIOMETERS
Features
n
12mm square, single-turn, through-hole, sealed cermet trimmers
n
Stable, infinite resolution cermet element
n
Unique 5,000 cycle rotational life
n
Meets UL 94V-0 flammability requirements
n
Top and side adjust models
n
4 standard styles, single-slot flush rotor, 5mm or 10mm single-slot metal shaft, or 8.2mm knurled plastic shaft
n
Sealed to withstand wave soldering and immersion cleaning
n
Optional 15, 20, 22, 25 or 30mm metal shafts available
