G12
Series
TOCOS
POTENTIOMETERS
®
1/2” Round, Single-Turn, Through-Hole Sealed Cermet Trimmers
Features
1/2” round, single-turn, through-hole, sealed cermet trimmers
Dial markings for quick adjustment
3 standard models, top and side adjust
Cross-slot adjustment flush with housing
PC board stand-offs
1.0 watt power rating
Low noise and low TC
Wide temperature range of 55 C to 125 C
Meets UL 94V-0 flammability requirements
Sealed to withstand wave soldering and immersion cleaning processes
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.)
. . . . . . . 1% or 1Ω, whichever is greater
Power Rating
. . . . . . . . 1.0 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
250 ppm / C, other values
Insulation Resistance
. . . . . 1,000MΩ minimum at 500VDC
Dielectric Strength
. . . . . . . . . . . . . . . . . 900VAC, 1 minute
Adjustment Travel
. . . . . . . . . . . . . . . . . . . . . . . . . 270
10
Environmental
Temperature Range
. . . . . . . . . . . . . . . . .
Low Temperature Exposure
. . . . . . . . . . . .
55 C to
125 C
55 C, 2 hours
∆T/R
)
1%
High Temperature Exposure
. . . . . . . . . 125 C, 250 hours
∆T/R
)
2%, S.S.
)
1%
Load Life
. . . . . . . . . . . . . . . . .
70 C, 1.0 watt, 1,000 hours
∆T/R
)
3%, S.S.
)
1%
Thermal Shock
. . . . . . . . . . . . . . . . . . . . . . 55 C, 125 C,
30 minutes each, 5 cycles
∆T/R
)
1%, S.S.
)
1%
Shock
. . . . . . . . . . . . . 50G, 6ms, 6 directions, 3 times each
∆T/R
)
2%, S.S.
)
1%
Vibration
. . . . . . . . . . . . . . . . 10-2,000Hz, 1.5mm amplitude,
20G, 12 hours
)
1%, S.S.
)
1%
∆T/R
Humidity
. . . . . . . . . . . . . . . . . . . . . . . .
40 C, 90-95%RH,
1.0 watt, 500 hours
∆T/R
)
3%, S.S.
)
1%
Mechanical
Mechanical Travel
. . . . . . . . . . . . . . . . . . . . . . . . . 300
10
Moisture Resistance
. . . . . .
Shaft Torque
. . . . . . . . . . . . . . 350 gf
•
cm (4.85 oz
•
in) max.
Stop Strength
. . . . . . . . . . . . . . 2 kgf
•
cm (27.73 oz
•
in) min.
Flammability of Plastic Materials
. . . . . . . Meets UL 94V-0
Nominal Weight
. . . . . . . . . . . . . . . . . . 1.5g (P); 2.4g (S, X )
Marking
. . . . . . . . Resistance code, date code, model type,
terminal identification (side adjust only)
10 C to 65 C, 80-98%RH,
1.0 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
. . . . . . . . . . 100 cycles without discontinuity
∆T/R
)
2%)
∆T/R
= Total Resistance Change; S.S. = Setting Stability ( voltage ratio )
88
1177 East Tower Road, Schaumburg, IL 60173
TOCOS
AMERICA, INC.
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
TOCOS [ TOCOSAMERICA, INC. ]
