Model 68
3/8” Square
Multiturn
Cermet Trimming Potentiometer
ELECTRICAL
Standard Resistance Range
10 Ohms to 2 Megohms
Standard Resistance Tolerance
±10% (<100 Ohms = ±20%)
Input Voltage
200 Vdc Max. or rms not to exceed power rating
Slider Current
100 mA Max. or within rated power, whichever is less
Power Rating
0.5 Watts at 85°C derating to 0 at 125°C
End Resistance
2 Ohms Max.
Actual Electrical Travel
20 turns nominal
Dielectric Strength
900 Vrms
Insulation Resistance
1,000 Megohms Min.
Resolution
Essentially infinite
Contact Resistance Variation
1% or 1 Ohm Max., whichever is greater
ENVIRONMENTAL
Seal
85°C Fluorinert® (No Leaks)
Temperature Coefficient
±100 ppm/°C (<100 Ohms = ±250 ppm/°C)
Operating Temperature Range
–55°C to +125°C
Thermal Shock
Five cycles –55°C to +125°C (1% ∆RT, 1% ∆VR)
Moisture Resistance
Ten 24 hour cycles (1% ∆RT, IR 1,000 Megohms Min.)
Shock
6 ms sawtooth, 100 G’s (1% ∆RT, 1% ∆VR)
Vibration
20 G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR)
High Temperature Exposure
250 hours at 125°C (2% ∆RT, 2% ∆VR)
Rotational Life
200 cycles (3% ∆RT)
Load Life
1,000 hours at 70°C & 0.5 Watts (2% ∆RT)
Resistance to Solder Heat
260°C for 10 sec. (1% ∆RT)
MECHANICAL
Mechanical Stops
Clutch action, both ends
Torque, Starting
5 oz.-in. Max. (0.035 N-m)
Weight
0.04 oz. nominal (1.1 grams)
Specifications subject to change without notice.
Fluorinert® is a registered trademark of 3M Company.
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345
June 3, 2010
Website: www.bitechnologies.com
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