RA12 Datasheet, PDF (1/3 Pages) TOCOSAMERICA, INC. – 12mm Round, Single-Turn, Through-Hole Sealed Wirewound Trimmers

RA12 Series
TOCOS®
POTENTIOMETERS
12mm Round, Single-Turn, Through-Hole Sealed Wirewound Trimmers
Features
Ⅲ 12mm round, single-turn, through-hole, sealed wirewound trimmers Ⅲ Top and side adjust styles available
Ⅲ Low equivalent noise resistance Ⅲ High setting stability Ⅲ Low temperature coefficient Ⅲ Long rotational life
Ⅲ Meets UL 94V-0 flammability requirements Ⅲ Sealed to withstand wave soldering and immersion cleaning processes
Specifications
Electrical
Standard Resistance Range . . . . . . . . . . . . . 10Ω to 20kΩ
(standard 1, 2 & 5 sequence )
Resistance Tolerance . . . . . . . . . . . . . . . . . ؓ10% standard
End Resistance . . . . . . . . 0.2% or 1Ω, whichever is greater
Resistance Taper . . . . . . . . . . . . . . . . . . . . . . . . . . . . Linear
Peak Noise (C.R.V.) . . . . . 0.5% or 2Ω, whichever is greater
Power Rating . . . . . . . . 0.5 watt at ؀70؇C, 0 watt at ؀125؇C
Temperature Coefficient . . . . . . . . . . . . . . . . . ؓ50ppm /؇C
Insulation Resistance . . . . . 1,000MΩ minimum at 500VDC
Dielectric Strength . . . . . . . . . . . . . . . . . 900VAC, 1 minute
Adjustment Travel . . . . . . . . . . . . . . . . . . . . . . . . . 270؇ؓ10؇
Mechanical
Mechanical Travel . . . . . . . . . . . . . . . . . . . . . . . . . 300؇ؓ10؇
Shaft Torque . . . . . . . . 30 to 300 gf• cm (0.42 to 4.16 oz• in)
Stop Strength . . . . . . . . . . . . . . 1 kgf• cm (13.86 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
Environmental
Temperature Range . . . . . . . . . . . . . . . . . ؁55؇C to ؀125؇C
Low Temperature Exposure . . . . . . . . . . . . ؁55؇C, 1 hours
∆T/R ⁾ؓ1%؀0.05Ω
High Temperature Exposure . . . . . . . . . ؀125؇C, 250 hours
∆T/R ⁾ؓ1%؀0.05Ω
Load Life . . . . . . . . . . . . . . . . . ؀70؇C, 0.5 watt, 1,000 hours
∆T/R ⁾ؓ2%
Thermal Shock . . . . . . . . . . . . . . . . . . . . . . ؁55؇C,؀125؇C,
30 minutes each, 5 cycles
∆T/R ⁾ؓ1%؀0.05Ω
Humidity . . . . . . . . . . . . . . . . . . . . . . . . ؀40؇C, 90-95%RH,
0.5 watt, 500 hours
∆T/R ⁾ؓ2%
Soldering Heat Resistance . . . . . . . . . . . 350؇C, 5 seconds
∆T/R ⁾ؓ1%؀0.05Ω
Seal Test . . . . . . . . . . . . . . . . .؀85؇C, hot water for 1 minute
Rotational Life . . . . . . . . . . 200 cycles without discontinuity
∆T/R ⁾ؓ2%
∆T/R = Total Resistance Change; S.S. = Setting Stability ( voltage ratio )
TOCOS AMERICA, INC.
101
1177 East Tower Road, Schaumburg, IL 60173 Tel: [phone] Fax: [phone] E-mail: [e-mail] www.tocos.com