Precision Potentiometer
Features:
Lead-free
RoHS 2 compliant
7/8” diameter
10 turn wirewound
Applications:
Pedal position
Joystick controls
Valve control
Wind vane
Panel control
Test and measurement
Medical equipment
Angular position
Model Styles Available
7281
7283
7284
7286
7288 (for heavy side load applications)
1/8” shaft, 1/4” bushing
1/8” shaft, servo
6 mm shaft, 3/8” bushing
1/4” shaft, 3/8” bushing
1/4” shaft, 3/8” bushing
Electrical
Resistance range
Standard resistance tolerance
Minimum practical resistance tolerance
Independent linearity
Minimum practical independent linearity
Power rating
Dielectric strength
Insulation resistance
Noise
Actual electrical travel
End voltage
Tap tolerance
100 to 100K ohms
±5%
±1%
±0.25%
±0.15% (<300 ohms), ±0.075% (≥300 ohms)
2.0 Watts at 70°C, derating to 0 at 125°C
1,000 V rms
1,000 Megohms minimum
100 ohms maximum
3600° +10° -0° (>100 ohms), 3600° +10° -5° (≤100 ohms)
Maximum 0.25% of input voltage
±3°
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com
Issue B
09/2015
Page 1
Precision Potentiometer
Mechanical
Total mechanical travel
Number of gangs
Weight (single gang)
Backlash
7281, 7284, 7286, 7288
Static stop strength
Panel nut tightening torque
Shaft end play
Shaft runout
Pilot diameter runout
Lateral runout
Shaft radial play
Start/run torque (per gang, ES option adds 0.5 oz.-in.)
Maximum 48 oz.-in.
Maximum 25 lb.-in.
Maximum 0.010”
Maximum T.I.R. 0.003”
Maximum T.I.R. 0.004”
Maximum T.I.R. 0.005”
Maximum 0.003”
Maximum 0.8 oz.-in.
3600° +15° -0°
2 maximum
0.75 oz. nominal
1° maximum
7283
36 oz.-in.
n/a
0.005”
0.002”
0.002”
0.004”
0.002”
0.6 oz.-in.
Environmental
Operating temperature range
Temperature cycling
Shock
Vibration
Moisture resistance
High temperature exposure
Rotational load life (1 lb side load for 7288)
Ingress protection rating (IP Code)
-40°C to +125°C dynamic, -55°C to +125°C static
5 cycles, -55°C to +125°C, maximum 5% ∆R
6 ms saw-tooth, 100 G’s, 0.1 ms maximum discontinuity
15 G’s, 10 to 2,000 Hz, maximum 5% ∆R, 0.1 ms maximum discontinuity
Five 24 hour cycles, maximum 3% ∆R
1,000 hours at 125°C, maximum 5% ∆R
1M shaft revolutions + 900 hours at 2.0 Watts & 70°C, maximum 5% ∆R
IP50, IP66 available as option (feature code ES)
Ordering Information
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com
Issue B
09/2015
Page 2
Precision Potentiometer
Feature Codes
7281, 7283 plain shaft; 7284, 7286, 7288 slotted shaft
Center tap
Linearity tape
Flatted shaft
Slotted shaft (standard on single cup 7284, 7286 & 7288 without RS feature)
Rear shaft extension (7281, 7286, 7288 single cup only)
Shaft lock (7286 & 7288 only)
High torque 2-6 oz.-in. (7286 & 7288 only)
Additional gang
Gold plated solder lug terminals (see optional terminal configuration)
Seal (IP66) 7284, 7286, or 7288 only
When multiple feature codes are used the P/N shall be in the same sequence as listed in this table (top to bottom).
No code
CT
LT
FS
SS
RS
SL
HT
2G
FT
ES
Standard Resistance Values
Total Resistance
(Ohms)
100
200
500
1K
2K
5K
10K
20K
50K
100K
Theoretical Resolution
(% nominal)
0.059
0.037
0.030
0.024
0.020
0.018
0.017
0.016
0.010
0.008
Tempco of Wire
(ppm/°C)
±20
±20
±20
±20
±20
±20
±20
±20
±20
±20
Circuit Diagram
Feature Codes
7281: RBJ, 2601, 2641
7286, 7288: RB, 2126, 2606, 2606S, 2607, 2607S, 2626, 2627, 2646, 2646S, 2647, 2647S
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com
Issue B
09/2015
Page 3
Precision Potentiometer
Outline Drawing
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com
Issue B
09/2015
Page 4
Precision Potentiometer
Outline Drawing
General Note
TT Electronics reserves the right to make changes in product specification without
notice or liability. All information is subject to TT Electronics’ own data and is
considered accurate at time of going to print.
© TT electronics plc
BI Technologies
4200 Bonita Place, Fullerton, CA 92835 |Ph: +1 714 447 2300
www.bitechnologies.com | www.ttelectronics.com
Issue B
09/2015
Page 5
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