TOCOS
®
G4 Series
POTENTIOMETERS
4mm Surface Mount, Single-Turn, Sealed Cermet Trimmers
Features
Ⅲ 4mm square SMD, single-turn, sealed cermet trimmers Ⅲ Available in J-hook and gull-wing terminal configurations
Ⅲ Top, side and bottom adjustment in single-slot or automatic adjust cross-slot design Ⅲ Tape and reel packaging
Ⅲ High setting accuracy, zero backlash Ⅲ Meets EIA, EIAJ, IPC, VECI standard SMD trimmer designs
Ⅲ Designed for flow, reflow or infrared reflow soldering Ⅲ Sealed to withstand immersion cleaning processes
Specifications
Electrical
Environmental
Standard Resistance Range . . . . . . . . . . . . . . 50Ω to 2MΩ
(standard 1, 2 & 5 sequence)
Resistance Tolerance . . . . . . . . . . . . . . . . . ؓ20% standard
ؓ10% optional for 100Ω to 1MΩ
End Resistance . . . . . . . . . . 1% or 3Ω, whichever is greater
Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
Peak Noise (C.R.V.) . . . . . . . 2% or 3Ω, whichever is greater
Power Rating . . . . . . . 0.25 watt at ؇07C; 0 watt at ؇521C
Temperature Range . . . . . . . . . . . . . . . . . ؇55C to ؇521C
Low Temperature Operation . . . . . . . . . ؇55C, 0.25 watt,
45 minutes
∆T/R )ؓ2%, S.S. )ؓ2%
High Temperature Exposure . . . . . . . . . ؇521C, 250 hours
∆T/R )ؓ2%, S.S. )ؓ2%
Load Life . . . . . . . . . . . . . . . . ؇07C, 0.25 watt, 1,000 hours
∆T/R )ؓ3%, S.S. )ؓ2%
Maximum Input Voltage . . . . . . . . 200VDC or power rating,
whichever is smaller
Thermal Shock . . . . . . . . . . . . . . . . . . . . . . ؇55C,؇521C,
30 minutes each, 5 cycles
∆T/R )ؓ2%, S.S. )ؓ1%
Temperature Coefficient . . . . ؓ100 ppm /؇C, 200Ω to 1MΩ
ؓ250 ppm /؇C, other values
Shock . . . . . . . . . . . . 100G, 6ms, 6 directions, 3 times each
∆T/R )ؓ1%, S.S. )ؓ1%
Insulation Resistance . . . . . . . 100MΩ minimum at 500VDC
Vibration . . . . . . . . . . . . . . . . 10-2,000Hz, 1.5mm amplitude,
20G, 12 hours
∆T/R )ؓ1%, S.S. )ؓ1%
Dielectric Strength . . . . . . . . . . . . . . . . . . 500VAC, 1 minute
Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 200؇ؓ10؇
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 240؇ؓ10؇
Shaft Torque . . . . . . . . . . . . . . . 150 gf • cm (2.08 oz • in) max.
Stop Strength . . . . . . . . . . . . . . 300 gf • cm (4.16 oz • in) min.
Flammability of Plastic Materials . . . . . . . Meets UL 94V-0
Humidity . . . . . . . . . . . . . . . . . . . . . . . . ؇04C, 90-95%RH,
0.25 watt, 500 hours
∆T/R )ؓ3%, S.S. )ؓ2%
Moisture Resistance . . . . . . ؇01C to ؇56C, 80-98%RH,
0.25 watt, 10 cycles, 240 hours
∆T/R )ؓ3%
Soldering Heat Resistance . . . . . . . . . . 260؇C, 10 seconds
∆T/R )ؓ1%
Nominal Weight . . . . . . . . . . . . . . . . . . . . . 0.14g (A, B, D, E)
0.16g (BF); 0.24g (S)
Seal Test . . . . . . . . . . . . . . . .؇58C, hot water for 1 minute
Marking . . . . . . . . . . . . Resistance value or code, date code
Rotational Life . . . .100 cycles without discontinuity, no load
∆T/R )ؓ5%
For through-hole models of the G4 series,
refer to the G4C Series on page 33.
∆T/R = Total Resistance Change; S.S. = Setting Stability ( voltage ratio )
TOCOS AMERICA, INC.
14
1177 East Tower Road, Schaumburg, IL 60173
Tel: 847-884-6664
Fax: 847-884-6665
E-mail: sales@tocos.com
www.tocos.com
