BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345 Website: www.bitechnologies.com
3/8” Square
Multiturn
Cermet Trimming Potentiometer
Model 68
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)
ENVIRONMENTAL
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
ELECTRICAL
Specifications subject to change without notice.
Fluorinert® is a registered trademark of 3M Company.
Mechanical Stops Clutch action, both ends
Torque, Starting 5 oz.-in. Max. (0.035 N-m)
Weight 0.04 oz. nominal (1.1 grams)
MECHANICAL
June 3, 2010 Model 68 page 1 of 3
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345 Website: www.bitechnologies.com
June 3, 2010 Model 68 page 2 of 3
PACKAGING
ORDERING INFORMATION
Model Series
Pin Style
Resistance Prefix
Packaging Option:
no code = Box (standard)
TR = Tape & Reel (Pin Styles W, X only)
AP = Ammo Pack
TB = Tubes (Pin Styles P, W, X only)
Resistance Value
68 P F R 10K LF XX
Optional RoHS compliant product code
Tape Width = 18 mm
Sprocket = Single hole, 0.050” spacing
Capacity = 1,000 units
Seat plane to centerline of sprocket hole = 0.71” (18 mm)
Reel Diameter = 14” (363 mm)
Option (TR code, available for 68W & 68X only): Tape & Reel. All units oriented with #1 pin to the right of the direction of feed.
Option (TB code): Tubes. All units oriented with #1 pin to same side. Tube capacity = 50 units.
(1)
(2)
(3)
CW
Model 68
Optional 0.70” lead length for AP &
TR packaging, pin style W & X only
Standard (no code): Boxes. Capacity = 100 units for 68W. 50 units for all other pin styles.
Option (AP code, available for 68W & 68X only): Ammo Pack. All units oriented with #1 pin to the right of the direction of feed.
Ammo Tape Fold = 12” (305 mm)
Box = 1.8” x 13” x 10”
(46 mm x 330 mm x 254 mm)
Pin Style P W X
Dimensions Width = 0.57” 0.33” 0.33”
Height = 0.66” 0.90” 0.90”
Length = 20.9” 20.4” 24.4”
CIRCUIT DIAGRAM STANDARD RESISTANCE VALUES
10 200 5K 50K 500K
20 500 10K 100K 1Meg
50 1K 20K 200K 2Meg
100 2K 25K 250K
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345 Website: www.bitechnologies.com
June 3, 2010 Model 68 page 3 of 3
Model 68
TOP ADJUSTMENT SIDE ADJUSTMENT
Schematic Diagram
This Surface
Max.
Standard Marking
This Surface
.15 ± .02
3.8 ± 0.5
Metal Adjustment Screw
.090/2.29 Dia. With
.020/0.51 Wide X
.025/0.64 Min. Depth
.375 ± .015
9.53 ± 0.38
.062 ± .015
1.58 ± 0.38
.060 ± .015
1.52 ± 0.38
.12 ± .02
3.1 ± 0.5
.245
6.22
Terminal Pins (3)
Dia.(3)(2)(1)
Min.
.18
4.6
.015
0.38
.375 ± .015
9.53 ± 0.38
.020 ± .003
0.51 ± 0.08
.187 ± .015
4.75 ± 0.38
.045 ± .015
1.14 ± 0.38
.10
2.5
.10
2.5
Schematic Diagram
This Surface
Standard Marking
This Surface
Max.
.245
6.22
Metal Adjustment Screw
.090/2.29 Dia. With
.020/0.51 Wide X
.025/0.64 Min. Depth
.375 ± .015
9.53 ± 0.38
.15 ± .02
3.8 ± 0.5
Terminal Pins (3)
Dia.
(3)(2)(1)
Min.
.32 ± .02
8.1 ± 0.5
.18
4.6
.375 ± .015
9.53 ± 0.38
.020 ± .003
0.51 ± 0.08
.060 ± .015
1.524 ± 0.38
.187 ± .015
4.75 ± 0.38
.045 ± .015
1.14 ± 0.38
.10
2.5
.10
2.5
SIDE ADJUSTMENT
Schematic Diagram
This Surface
Metal Adjustment Screw
.090/2.29 Dia. With
.020/0.51 Wide X
.025/0.64 Min. Depth
Max.
(1)
(2)
(3)
Meniscus
(Typ)
.19 ± .02
4.8 ± 0.5
.03
0.8
.245
6.22
Max.
.18
4.6
Min.
Terminal Pins (3)
Dia.
.020 ± .003
0.51 ± 0.08
Standard Marking
This Surface
Min.
Standoff
.015 ± .002
0.38 ± 0.05
.187 ± .015
4.75 ± 0.38
.375 ± .015
9.53 ± 0.38
.12 ± .02
3.1 ± 0.5
(2)
(1)
(3)
.060 ± .015
1.524 ± 0.38.10
2.5
.187 ± .015
4.75 ± 0.38
.10
2.5 .375 ± .015
9.53 ± 0.38
.10
2.5
Model 68W Model 68X
Model 68P
