Model 68
3/8” Square
Multiturn
Cermet Trimming Potentiometer
ELECTRICAL
Standard Resistance Range
Standard Resistance Tolerance
Input Voltage
Slider Current
Power Rating
End Resistance
Actual Electrical Travel
Dielectric Strength
Insulation Resistance
Resolution
Contact Resistance Variation
10 Ohms to 2 Megohms
±10% (<100 Ohms = ±20%)
200 Vdc Max. or rms not to exceed power rating
100 mA Max. or within rated power, whichever is less
0.5 Watts at 85°C derating to 0 at 125°C
2 Ohms Max.
20 turns nominal
900 Vrms
1,000 Megohms Min.
Essentially infinite
1% or 1 Ohm Max., whichever is greater
ENVIRONMENTAL
Seal
Temperature Coefficient
Operating Temperature Range
Thermal Shock
Moisture Resistance
Shock
Vibration
High Temperature Exposure
Rotational Life
Load Life
Resistance to Solder Heat
85°C Fluorinert® (No Leaks)
±100 ppm/°C (<100 Ohms = ±250 ppm/°C)
–55°C to +125°C
Five cycles –55°C to +125°C (1% ∆RT, 1% ∆VR)
Ten 24 hour cycles (1% ∆RT, IR 1,000 Megohms Min.)
6 ms sawtooth, 100 G’s (1% ∆RT, 1% ∆VR)
20 G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR)
250 hours at 125°C (2% ∆RT, 2% ∆VR)
200 cycles (3% ∆RT)
1,000 hours at 70°C & 0.5 Watts (2% ∆RT)
260°C for 10 sec. (1% ∆RT)
MECHANICAL
Mechanical Stops
Torque, Starting
Weight
Clutch action, both ends
5 oz.-in. Max. (0.035 N-m)
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
Model 68 page 1 of 3
Model 68
PACKAGING
Standard (no code): Boxes. Capacity = 100 units for 68W. 50 units for all other pin styles.
Option (TR code, available for 68W & 68X only): Tape & Reel. All units oriented with #1 pin to the right of the direction of feed.
Tape
Width =
Sprocket =
Capacity =
Seat plane to centerline of sprocket hole =
Reel
Diameter =
18 mm
Single hole, 0.050” spacing
1,000 units
0.71” (18 mm)
14” (363 mm)
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 =
Box =
12” (305 mm)
1.8” x 13” x 10”
(46 mm x 330 mm x 254 mm)
Option (TB code): Tubes. All units oriented with #1 pin to same side. Tube capacity = 50 units.
Pin Style
Dimensions
Width =
Height =
Length =
P
0.57”
0.66”
20.9”
W
0.33”
0.90”
20.4”
X
0.33”
0.90”
24.4”
ORDERING INFORMATION
68
Model Series
Pin Style
Optional 0.70” lead length for AP &
TR packaging, pin style W & X only
Resistance Prefix
Resistance Value
P
F
R
10K
LF
XX
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)
Optional RoHS compliant product code
CIRCUIT DIAGRAM
(2)
(1)
CW
(3)
STANDARD RESISTANCE VALUES
10
20
50
100
200
500
1K
2K
5K
10K
20K
25K
50K
100K
200K
250K
500K
1Meg
2Meg
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345
June 3, 2010
Website: www.bitechnologies.com
Model 68 page 2 of 3
Model 68
TOP ADJUSTMENT
Model 68W
.375
±
.015
9.53
± 0.38
.245
Max.
6.22
Schematic Diagram
This Surface
.062
±
.015
1.58 ± 0.38
Metal
Adjustment
Screw
.090/2.29
Dia.
With
.020/0.51
Wide X
.025/0.64 Min.
Depth
.15
±
.02
3.8 ± 0.5
SIDE ADJUSTMENT
Model 68X
.15
±
.02
3.8 ±
0.5
.375
±
.015
9.53
±
0.38
.245
Max.
6.22
Metal
Adjustment
Screw
.090/2.29
Dia.
With
.020/0.51
Wide X
.025/0.64
Min.
Depth
Schematic Diagram
This Surface
.12
±
.02
3.1 ± 0.5
.060
±
.015
1.52 ± 0.38
Standard
Marking
This Surface
.015
0.38
.375
±
.015
9.53
± 0.38
Standard
Marking
This Surface
.18
Min.
4.6
(3) (2) (1)
.32
±
.02
8.1 ±
0.5
.375
±
.015
9.53
±
0.38
.18
Min.
4.6
(3) (2) (1)
.020
±
.003
Dia.
0.51 ± 0.08
Terminal
Pins (3)
.020
±
.003
Dia.
0.51
±
0.08
Terminal
Pins (3)
.060
±
.015
1.524
±
0.38
.045
±
.015
1.14 ± 0.38
.10 .10
2.5 2.5
.187
±
.015
4.75
± 0.38
.187
±
.015
4.75
±
0.38
.10 .10
2.5 2.5
.045
±
.015
1.14
±
0.38
SIDE ADJUSTMENT
Model 68P
.245
6.22
Max.
Schematic Diagram
This Surface
.18
4.6
Min.
.375
±
.015
9.53
±
0.38
Standoff
.015
±
.002
Min.
0.38
±
0.05
.020
±
.003
Dia.
0.51
±
0.08
Terminal
Pins
(3)
.03
Max.
0.8
Meniscus
(Typ)
.187
±
.015
4.75
±
0.38
(3)
(2)
(3)
(2)
.10
2.5 .10
2.5
.375
±
.015
9.53
±
0.38
Metal Adjustment
Screw
(1)
.090/2.29
Dia.
With
.020/0.51 Wide X
.025/0.64 Min.
Depth
.19
±
.02
4.8
±
0.5
.12
±
.02
3.1
±
0.5
.060
±
.015
1.524
±
0.38
(1)
.187
±
.015
4.75
±
0.38
Standard
Marking
This Surface
.10
2.5
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345
June 3, 2010
Website: www.bitechnologies.com
Model 68 page 3 of 3
