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Bourns 91A1AB28A13L Single-Turn Panel Control
The Bourns 91A1A-B28-A13L is a robust 5/8" square single-turn panel control designed for demanding industrial applications. It features a variety of pin-out configurations and shaft options, including metal or plastic shafts, and provides virtually infinite electrical circuit isolation. The potentiometer is RoHS compliant and offers excellent mechanical and electrical characteristics, including a wide operating temperature range (-40°C to +125°C) and high dielectric withstanding voltage. Its precision and reliability make it suitable for applications such as industrial equipment, automation systems, and process control.
Bourns 91A1AB28A13L Single-Turn Panel Control Specifications:
- Standard Resistance Range: 1 K ohms to 1 megohm (Linear tapers B & E), 100 ohms to 1 megohm (Linear tapers A & H), 1 K ohms to 1 megohm (Audio tapers D,G,S, & T), 1 K ohms to 1 megohm (Audio tapers C & F)
- Total Resistance Tolerance: 10 % or 20 % (Cermet Element), 5% or 10% (Conductive Plastic Element)
- Independent Linearity: ±5 %
- Absolute Minimum Resistance: 2 ohms maximum
- Effective Electrical Angle: 240 ° ± 5 ° (Linear tapers), 225 ° ± 5 ° (Audio tapers)
- Contact Resistance Variation: ±1 % or 3 ohms (whichever is greater)
- Dielectric Withstanding Voltage: 1,500 VAC minimum (Sea Level), 500 VAC minimum (70,000 Feet)
- Insulation Resistance: 1,000 megohms minimum
- Power Rating: +70 °C Single Section Assembly (Linear tapers) 1 watt, +70 °C Single Section Assembly (Audio tapers) 0.5 watt, +70 °C Multiple Section Assembly (Linear tapers) 0.5 watt/section, +70 °C Multiple Section Assembly (Audio tapers) 0.25 watt/section, +125 °C 0 watt
- Theoretical Resolution: Essentially infinite
- Operating Temperature Range: -40 °C to +125 °C
- Storage Temperature Range: -55 °C to +125 °C
- Temperature Coefficient: ±1,000 ppm/°C (Conductive Plastic Element), ±150 ppm/°C (Cermet Element)
- Vibration: 15 G
- Total Resistance Shift (Vibration): ±2 % maximum
- Voltage Ratio Shift (Vibration): ±5 % maximum
- Shock: 30 G
- Total Resistance Shift (Shock): ±2 % maximum
- Voltage Ratio Shift (Shock): ±5 % maximum
- Load Life: 1,000 hours
- Total Resistance Shift (Load Life): ±10 % maximum (Linear tapers), ±5 % maximum (All tapers)
- Rotational Life: 100,000 cycles
- Total Resistance Shift (Rotational Life): (Linear tapers) 10 ohms or ±15 % TRS max, (Audio tapers) ±20 % maximum
- Contact Resistance Variation (50,000 cycles): ±2 % (Linear tapers), ±3 % (Audio tapers)
- Moisture Resistance: (Linear tapers) ±10 % TRS maximum, (All tapers) ±5 % TRS maximum, (Audio tapers) ±20 % TRS maximum
- Insulation Resistance (Moisture Resistance): 100 megohms minimum
- IP Rating: IP 40
- Moisture Sensitivity Level: 1
- Stop Strength: 45.19 N-cm (4 lb.-in.) (1/4 ” D shaft), 33.89 N-cm (3 lb.-in.) (1/8 ” D shaft)
- Mechanical Angle: 300 ° ±5 °
- Torque Starting: 0.3 max. above average running torque
- Running Torque: 0.21 to 1.06 N-cm (0.3 to 1.5 oz.-in.) (Single or Dual Section, A & R Bushings), 0.14 to 1.06 N-cm (0.2 to 1.5 oz.-in.) (Single or Dual Section, C & U Bushings)
- Mounting Torque: 1.7-2.0 N-m (15-18 lb.-in.) maximum
- Mounting Variation: 0.35 N-cm (0.5 oz.-in.) maximum
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Frequently Asked Questions
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How do I troubleshoot issues or seek technical support for part 91A1AB28A13L?
You can download the 91A1AB28A13L datasheet or visit the Bourns website for support.
Who is the manufacturer of 91A1AB28A13L?
Bourns