Model 7280
7/8 Diameter
10 Turn Wirewound
Precision Potentiometer
MODEL STYLES AVAILABLE
7281 1/8 Shaft, 1/4 Bushing
7283 1/8 Shaft, Servo
7284 6 mm shaft, 3/8 Bushing
7286 1/4 Shaft, 3/8 Bushing
7288 (for heavy side load applications) 1/4 Shaft, 3/8 Bushing
1
ELECTRICAL
Resistance Range 100 to 100K ohms
Standard Resistance Tolerance 5%
Minimum Practical Resistance Tolerance 1%
2
Independent Linearity 0.25%
Minimum Practical Independent Linearity 0.15% (<300 ohms), 0.075% (300 ohms)
Power Rating 2.0 Watts at 70C, derating to 0 at 125C
Dielectric Strength 1,000 V rms
Insulation Resistance 1,000 Megohms minimum
Noise 100 ohms maximum
Actual Electrical Travel 3600 +10 -0 (>100 ohms), 3600 +10 -5 (100 ohms)
End Voltage maximum 0.25% of input voltage
Tap Tolerance 3
MECHANICAL
Total Mechanical Travel 3600 +15 -0
Number of Gangs 2 maximum
Weight (single gang) 0.75 oz. nominal
Backlash 1 maximum
7281, 7284, 7286, 7288 7283
Static Stop Strength maximum 48 oz.-in. 36 oz.-in.
Panel Nut Tightening Torque maximum 25 lb.-in. n/a
Shaft End Play maximum 0.010 0.005
Shaft Runout maximum T.I.R. 0.003 0.002
Pilot Diameter Runout maximum T.I.R. 0.004 0.002
Lateral Runout maximum T.I.R. 0.005 0.004
Shaft Radial Play maximum 0.003 0.002
Start/Run Torque (per gang, ES option adds 0.5 oz.-in.) maximum 0.8 oz.-in. 0.6 oz.-in.
1
Specifications subject to change without notice.
2
Linearity is measured between 1% and 99% of input voltage.
RoHS 2
Pb
compliant
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345 Website: www.bitechnologies.com
September 1, 2015 Model 7280 page 1 of 4Model 7280
ENVIRONMENTAL (MIL-PRF-12934)
Operating Temperature Range -40C to +125C dynamic, -55C to +125C static
Temperature Cycling 5 cycles, -55C to +125C, maximum 5% R
Shock 6 ms Saw-tooth, 100 Gs, 0.1 ms maximum discontinuity
Vibration 15 Gs, 10 to 2,000 Hz, maximum 5% R, 0.1 ms maximum discontinuity
Moisture Resistance Five 24 hour cycles, maximum 3% R
High Temperature Exposure 1,000 hours at 125C, maximum 5% R
Rotational Load Life (1 lb side load for 7288) 1M shaft revolutions + 900 hours at 2.0 Watts & 70C, maximum 5% R
Ingress Protection Rating (IP Code) IP50, IP66 available as option (feature code ES)
ORDERING INFORMATION
7286 R 10K T2 L.25 xx
Optional Feature Code (see table)
Model Series
No code required for
slotted shaft 7284/7286/7288
or for plain shaft 7281/7283
Linearity
Resistance Prefix
Resistance Value
Optional Non-standard Tolerance
FEATURE CODES STANDARD RESISTANCE VALUES
7281, 7283 plain shaft no
Theoretical
7284, 7286, 7288 slotted shaft code
Total Resistance Resolution Tempco of wire
(Ohms) (% nominal) (ppm/C)
Center Tap CT
100 0.059 20
Linearity Tape LT
200 0.037 20
Flatted Shaft FS
500 0.030 20
Slotted Shaft (standard on single cup 7284, 7286 & SS
7288 without RS feature)
1K 0.024 20
Rear Shaft Extension (7281, 7286, 7288 single cup RS
2K 0.020 20
only)
5K 0.018 20
Shaft Lock (7286 & 7288 only) SL
10K 0.017 20
High Torque 2-6 oz.-in. (7286 & 7288 only) HT
20K 0.016 20
Additional Gang 2G
50K 0.010 20
Gold Plated Solder Lug Terminals (see optional FT
terminal configuration)
100K 0.008 20
Seal (IP66) 7284, 7286, or 7288 only ES
When multiple Feature Codes are used the P/N shall be in the
CIRCUIT DIAGRAM
same sequence as listed in this table (top to bottom).
(S)
(CCW) (CW)
BI Technologies Corporation
4200 Bonita Place, Fullerton, CA 92835 USA
Phone: 714 447 2345 Website: www.bitechnologies.com
September 1, 2015 Model 7280 page 2 of 4