S127B Series - Sealed 1/2" Potentiometer
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| Features: |
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Conductive plastic or cermet element |
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Linear, Audio, Reverse Audio Tapers |
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Resistance Tolerance: ±10% Standard |
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PC board or bushing mount |
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Metal bushing and shaft |
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Sealed for board washing |
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IP Rated: Entire Unit—IP64
Shaft & Bushing—IP65 |
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RoHS Compliant |
| Options: |
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Rotary or Push-Pull Switch |
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External Panel and Shaft Seal Options.
More information |
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Model
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Series S127B
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Sealed 1/2" Square Potentiometer
Bushing or PC board Mount
Optional: Rotary Switch or Push-Pull Switch
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Electrical Specifications
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Resistance Range
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500 to 500K ohms |
Resistance Tapers
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Linear, Audio, Reverse Audio
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Resistance Tolerance
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±10% Standard (±5% to ±20% Optional)
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Independent Linearity
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±5% |
Absolute Minimum Resistance
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2 ohms max. |
Effective Electrical Angle
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270° ±5° |
Contact Resistance Variation
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2% |
Dielectric Withstanding Voltage
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Sea Level: 1,500 VAC minimum
70,000 feet: 500 VAC minimum
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Insulation Resistance
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1,000 megohms minimum
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Power Rating
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Conductive Plastic Linear Taper: 0.5 watt
Cermet Linear Taper: 1.0 watt
Conductive Plastic Audio Taper: 0.25 watt
Cermet Audio Taper: 0.5 watt
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Theoretical Resolution
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Essentially infinite |
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Mechanical Specifications
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Mechanical Angle
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290° ±5°
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Stop Strength
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56 N-cm (5 lb.-in.) |
Starting Torque
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Dual Sections: +0.5 oz.-in. max |
Running Torque
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Single Section: 0.2 to 2.0 oz.-in.
Dual Section: 0.5 to 2.5 oz.-in.
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Detent Torque
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Single Section: 2.75 oz.-in. min |
Mounting Torque
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On Bushing: 15 to 18 lb.-in. max
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Gangs
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2 modular sections maximum**
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Weight
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Single Section: 5.5 grams
Additional Section: 3.0 grams |
Terminals
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PC pin or solder lug
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Soldering Condition
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Hand soldering: 750°F for 3 seconds
Wave soldering: 500°F for 5 seconds
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** Additional sections available on special request
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Environmental Specifications
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Operating Temperature
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+1 °C to +125 °C
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Storage Temperature
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-55 °C to +125 °C
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Temp Coefficient over Storage Temperature Range
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Conductive Plastic: ±1,000 ppm/°C
Cermet: ±150 ppm/°C
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15 G Vibration
(Single Section)
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Total Resistance Shift ±2% maximum
Voltage Ratio Shift ±5% maximum
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30 G Shock
(Single Section)
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Total Resistance Shift ±2% maximum
Voltage Ratio Shift ±5% maximum
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| Load Life - Total Resistance Shift |
Conductive Plastic: 1,000 hours ±10% TRS
Cermet: 1,000 hours ±5% TRS |
Conductive Plastic -
Rotational Life (No Load) |
50,000 cycles: ±10% TRS maximum
25,000 cycles: ±2% Contact Resistance Variation |
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Moisture Resistance (MIL-STD-202) |
Conductive Plastic: ±10% TRS maximum
Cermet: ±5% TRS maximum |
| IP Rating |
Entire Unit: IP64
Shaft & Bushing: IP65 |
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