1
1-13 Model 24
ELECTRICAL
ENVIRONMENTAL
Seal 85°C Fluorinert®
Temperature Coefficient, Maximum ±100ppm/°C (<200 ohms = ±250ppm/°C)
Operating Temperature Range –55°C to +125°C
Thermal Shock 5 cycles, –55°C to +125°C (2% ∆RT, 2% ∆VR)
Moisture Resistance Ten 24 hour cycles (3% ∆RT)
Shock, 6ms Sawtooth 100G’s (2% ∆RT, 1% ∆VR)
Vibration 20G’s, 10 to 2,000 Hz (1% ∆RT, 1% ∆VR)
High Temperature Exposure 250 hours at 125°C (2% ∆RT, 1% ∆VR)
Rotational Life 200 cycles (5% ∆RT)
Load Life at 0.5 Watts 1,000 hours at 70°C (3% ∆RT)
Resistance to Solder Heat 350°C for 3 sec. (1% ∆RT)
MECHANICAL
Mechanical Stops Solid
Stop Strength, Minimum 3 oz.-in. (200 gr-cm)
Torque, Maximum 2 oz.-in. (150 gr-cm)
Weight, Nominal .01 oz.(0.3 grams)
MODEL 24
4mm Diameter
Single Turn
Cermet Trimming
Potentiometer
Fluorinert® is a registered trademark of 3M Company.
Specifications subject to change without notice.
Standard Resistance Range, Ohms 10 to 1Meg
Standard Resistance Tolerance ±20% (±10% available)
Input Voltage, Maximum 200 Vdc or rms not to exceed power rating
Power Rating, Watts 0.5 at 70°C derating to 0 at 125°C
End Resistance, Maximum 1% or 3 Ohms, whichever is greater
Actual Electrical Travel, Nominal 190°
Dielectric Strength 500Vrms
Insulation Resistance, Minimum 1,000 Megohms
Resolution Essentially infinite
Contact Resistance Variation, Maximum 2% or 3 Ohms, whichever is greater
Model 24
1-14
.19 ± .01
4.8 ± 0.3
58.5°
Typical
4 Places
Dia
.08 ± .01
2.0 ± 0.3
.35 ± .04
9.0 ± 1.0
Dia
.11
2.7 Dia. x
.19
4.7 Max.
Adjustment Slot
.014
0.35 Deep
.02
0.5 Wide x .03
0.8 Deep
Note: Model 24W dimensions applicable to all other models except as noted.
.39 ± .04
10 ± 1.0 .10 ± .01
2.5 ± 0.3
.14 ± .01
3.5 ± 0.3
.04 ± .01
1.0 ± 0.2
.02 ± .004
0.5 ± 0.10
Solderable Terminal Leads
Typical 3 Places
Dia. .07 ± .01
1.8 ± 0.2
(1)
(2)
(3)
OUTLINE DIMENSIONS (Inch/mm)
Model 24W Top Adjust
Model 24U Top Adjust
.39 ± .04
10 ± 1.0
.19
4.7 Max.
.20 ± .01
5.0 ± 0.3
.31 ± .04
8.0 ± 1.0
(1)
(2)
(3)
.35 ± .04
9.0 ± 1.0
.008
0.20 Max.
Dia.
(1)
(2)
(3)
.24 ± .01
6.0 ± 0.3
.16 ± .01
4.1 ± 0.3
.19 ± .01
4.8 ± 0.3
.26 ± .01
6.5 ± 0.3
.20 ± .04
5.0 ± 1.0
.14 ± .01
3.5 ± 0.3
.10 ± .01
2.5 ± 0.3
.03 ± .01
0.8 ± 0.3
.07 ± .01
1.8 ± 0.2
Model 24S Side Adjust
1
1-15 Model 24
CIRCUIT DIAGRAM
(1)
(2)
(3)
CW
NOTES
mm
INCH
English equivalents are based on 1 inch = 25.4mm
and are provided for general information only.
Tolerances unless otherwise specified:
Linear = ± 0.3 mm (.01 in.)
ORDERING INFORMATION
24 W R 10K LF TR
Model Series
Pin Style
Resistance Prefix
Packaging Option
TR = Tape & Reel
RoHS Compliant Product Code - Optional
Resistance Value
Standard:
PACKAGING
Standard: Boxes
Capacity = 100 Units
Option: Tape & Reel (24U only)
All units oriented with #3 pin toward direction of feed.
Seat Plane to
Centerline of
Sprocket Hole = .71” (18 mm)
Tape Width = 18 mm
Sprocket = Single Hole .50” spacing
Capacity = 1,000 Units
Reel Diameter = 14” (363 mm)
100 1K 10K 100K 1Meg
200 2K 20K 200K 2Meg
500 5K 50K 500K
STANDARD RESISTANCE VALUES, OHMS
