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Trimming Potentiometer. 44WRxxxKLF Datasheet 
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Trimming Potentiometer. 44WRxxxKLF Datasheet 

Part  44WRxxxKLF 
Description  4mm Square Multiturn Surface Mount Cermet Trimming Potentiometer 
Feature 
MODEL 44 4mm Square Multiturn Surface Mo unt Cermet Trimming Potentiometer ELECT RICAL 1 Standard Resistance Range, Oh ms Standard Resistance Tolerance Input Voltage, Maximum Slider Current, Maximu m www.DataSheet4U.com Power Rating, Wat ts End Resistance, Maximum Actual Elect rical Travel, Turns, Nominal Dielectric Strength Insulation Resistance, Minimu m Resolution Conta. 
Manufacture  Bi technologies 
Datasheet 
44WRxxxKLF; ct Resistance Variation, Maximum ENVIRON MENTAL 10 to 2Meg ±10% (<100 Ohms = 20%) 300 Vdc or rms not to exceed powe r rating 100mA or within rated power, w hichever is less 0.25 at 85°C derating to 0 at 150°C 1% or 2 Ohms, whichever is greater 9 600Vrms 1,000 Megohms Ess entially infinite 1% or 3 Ohms, whichev er is greater Seal Temperature Coeffic ient, Maximum Operatin. 
g Temperature Range Thermal Shock Moistu re Resistance Shock, 6ms Sawtooth Vibra tion Rotational Life Load Life at 0.25 Watts Resistance to Solder Heat Tempera ture Exposure, Maximum Solderability ME CHANICAL 85°C Fluorinert® (No Leaks) ±100ppm/°C (<100 Ohms = ±250ppm/°C ) –65°C to +150°C 5 cycles, –65° C to +150°C (2% ∆RT, 1% ∆VR) Ten 2 4 hour cycles (2% ∆RT, IR 10 Megohms. 
Min.) 100G’s (1% ∆RT, 1% ∆VR) 20G ’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆V R) 200 cycles (3% ∆RT, 1% CRV) 1,000 hours at 85°C (2% ∆RT, 1% CRV) 260° C for 10 sec. (1% ∆RT) 215°C for 3 m in. (1% ∆RT) Per MILSTD202, Method 208 Mechanical Stops Torque, Starting Maximum Weight, Nominal Fluorinert® is a registered trademark of 3M Company. Specifications subject to change without n. 
Part  44WRxxxKLF 
Description  4mm Square Multiturn Surface Mount Cermet Trimming Potentiometer 
Feature 
MODEL 44 4mm Square Multiturn Surface Mo unt Cermet Trimming Potentiometer ELECT RICAL 1 Standard Resistance Range, Oh ms Standard Resistance Tolerance Input Voltage, Maximum Slider Current, Maximu m www.DataSheet4U.com Power Rating, Wat ts End Resistance, Maximum Actual Elect rical Travel, Turns, Nominal Dielectric Strength Insulation Resistance, Minimu m Resolution Conta. 
Manufacture  Bi technologies 
Datasheet 
MODEL 44
4mm Square Multiturn
Surface Mount
Cermet Trimming
Potentiometer
ELECTRICAL
Standard Resistance Range, Ohms
Standard Resistance Tolerance
Input Voltage, Maximum
www.DataSheSelitd4eUr.Ccoumrrent, Maximum
Power Rating, Watts
End Resistance, Maximum
Actual Electrical Travel, Turns, Nominal
Dielectric Strength
Insulation Resistance, Minimum
Resolution
Contact Resistance Variation, Maximum
ENVIRONMENTAL
Seal
Temperature Coefficient, Maximum
Operating Temperature Range
Thermal Shock
Moisture Resistance
Shock, 6ms Sawtooth
Vibration
Rotational Life
Load Life at 0.25 Watts
Resistance to Solder Heat
Temperature Exposure, Maximum
Solderability
MECHANICAL
Mechanical Stops
Torque, Starting Maximum
Weight, Nominal
Fluorinert® is a registered trademark of 3M Company.
Specifications subject to change without notice.
1
10 to 2Meg
±10% (<100 Ohms = ±20%)
300 Vdc or rms not to exceed power rating
100mA or within rated power, whichever is less
0.25 at 85°C derating to 0 at 150°C
1% or 2 Ohms, whichever is greater
9
600Vrms
1,000 Megohms
Essentially infinite
1% or 3 Ohms, whichever is greater
85°C Fluorinert® (No Leaks)
±100ppm/°C (<100 Ohms = ±250ppm/°C)
–65°C to +150°C
5 cycles, –65°C to +150°C (2% ∆RT, 1% ∆VR)
Ten 24 hour cycles (2% ∆RT, IR 10 Megohms Min.)
100G’s (1% ∆RT, 1% ∆VR)
20G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR)
200 cycles (3% ∆RT, 1% CRV)
1,000 hours at 85°C (2% ∆RT, 1% CRV)
260°C for 10 sec. (1% ∆RT)
215°C for 3 min. (1% ∆RT)
Per MILSTD202, Method 208
Clutch action, both ends
3 oz.in. (0.021 Nm)
.01 oz. (0.3 grams)
121
Model 44

TOP ADJUSTMENT (Inch/mm)
Model 44W
.100 (1)
2.54
.008±.003 3X Solderable
.203±.076 Terminals
(2) .190
4.83
(3)
.113
2.87
.061
1.56
Metal Adjustment
Screw .056/1.42 Dia.
with .020/.51 wide x
.015/.38 deep slot
www.DataSheet4U.com
.138
.154 3.51
3.91
.200
5.08
.209
5.31
.063
1.60
.025
3X
.63
.022
.55
.039 3X
.99
SIDE ADJUSTMENT (Inch/mm)
Model 44J
.025
3X
.63
.008±.003 3X Solderable
.203±.076 Terminals
.100
2.54
.113
2.87
Metal Adjustment
Screw .056/1.42 Dia.
with .020/.51 wide x
.015/.38 deep slot
(2)
.061
1.56
.032
3X
.81
(1)
.190
4.83
(3)
.198
5.03
.180
4.57
.147
3.73
SOLDER PAD LAYOUT (Inch/mm)
Model 44W
3X .079
2.01
.079
2.01
3X .060
1.52
.157
3.99
.079
2.01
.051
2X
1.30
3X .051
1.30
.114
.051
2X
2.90 1.30
.100
2.54
Model 44J
.090
2.29
.205
5.21
Model 44G
.079
2.01
.051
2X
1.30
.090
2.29
Model 44G
.025
3X .63
.120
3.05
Metal Adjustment
Screw .056/1.42 Dia.
with .020/.51 wide x
.015/.38 deep slot
(2)
.061
1.56
.229
5.82
.180
4.57
.008±.003 3X
.203±.076
Solderable
Terminals
(1)
.100 .190
2.54 4.83
(3)
.154
3.91
.024
.61
STANDARD RESISTANCE VALUES, OHMS
10 100 1K 10K
20 200 2K 20K
50 500 5K 25K
50K
100K
200K
250K
500K
1Meg
2Meg
122
Model 44

FEATURES AND BENEFITS
• Space saving SMD design for the most compact board designs
• Sealed to withstand aggressive water wash
• Long life  set and forget construction
• BI quality and reliability
• Available in top and side adjustment versions, JHook or gull wing termination
PACKAGING
Standard: Embossed Tape & Reel
All units oriented with #1 pin to the right of the direction of feed.
www.DataSheet4U.comTape
Reel
Pin Style
Width
Sprocket
Capacity
Diameter
13” Reel
G&J
W
= 12 mm
16 mm
= 4 mm Pitch 4 mm Pitch
= 1,000 Units 1,000 Units
= 13” (330.2 mm)
7” Reel
G&J
W
12 mm
16 mm
4 mm Pitch
4 mm Pitch
500 Units
250 Units
7” (178 mm)
Option: AntiStatic Tubes
All units oriented with #1 pin to same side.
Magazine Capacity =
100 Units
ORDERING INFORMATION
Model Series
Pin Style
44 G R 10K LF XX*
* Packaging option must be specified.
Packaging Option:
T7 = 7" Tape & Reel
T13 = 13" Tape & Reel
TB = Tubes
RoHS Compliant Product Code  optional
Resistance Value
Resistance Prefix
CIRCUIT DIAGRAM
(2)
(1)
CW
(3)
NOTES
Metric equivalents, based on 1 inch = 25.4mm are
rounded to the same number of significant figures
as in the original English units and are provided for
general information only.
Tolerances unless otherwise specified:
Linear = ± .012 inches (.30mm)
Angular = ± 2 degrees
INCH
mm
1
123
Model 44

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