Overview
The Bourns 6574S-40-103 precision potentiometer is a single-turn servo mount rotary potentiometer rated at 10kΩ with ±10% tolerance. This unit features a conductive plastic resistive element with a linear taper, delivering stable and accurate resistance feedback for servo control systems, motion control loops, and precision industrial applications. The servo mount configuration includes a 6.35 mm (0.250 in.) diameter shaft supported by front and rear precision ball bearings, enabling reliable continuous mechanical operation.
Key Features
- Single-turn design with continuous mechanical rotation capability
- Servo mount style with precision ball bearing shaft support (front and rear)
- Conductive plastic element for smooth, linear response and long service life
- ±10% tolerance on 10kΩ nominal resistance
- 2W power rating and 350V AC voltage rating for industrial environments
- Solder turret termination for direct PCB and turret board mounting
Technical Specifications
- Resistance: 10,000 Ω (10kΩ)
- Tolerance: ±10%
- Taper: Linear
- Element Type: Conductive Plastic
- Power Rating: 2W maximum
- Voltage Rating: 350V AC
- Number of Turns: 1 (electrical and mechanical)
- Mounting Style: Servo Mount
- Shaft Diameter: 6.35 mm (0.250 in.)
- Shaft Runout: 0.025 mm (0.001 in.) T.I.R.
- Shaft End Play: 0.08 mm (0.003 in.) T.I.R.
- Starting & Running Torque: 0.53 N-cm (0.75 oz.-in.) maximum
- Operating Temperature Range: +1°C to +125°C
- Temperature Coefficient: ±500 ppm/°C
- IP Rating: IP40
- Termination: Solder Turret
- Moisture Resistance: ±10% maximum total shift (MIL-STD-202, Method 103, Condition B)
Typical Applications
The Bourns 6574S-40-103 is widely deployed in:
- Servo control systems: Feedback and control circuits in industrial automation and motion control
- Industrial instrumentation: Precision analog input transducers and sensor interfaces
- Test and measurement: Laboratory and field calibration equipment requiring stable feedback
- Aerospace and defense: Mission-critical control and monitoring applications
- Medical equipment: Therapeutic and diagnostic instruments requiring precise analog adjustment
Compatibility & Replacements
Compatible With
- Servo motor feedback loops and closed-loop control systems
- Analog input modules accepting 0–10V or 4–20mA sensor input
- Industrial PLC and motion control platforms (Allen-Bradley, Siemens, Mitsubishi, etc.)
- Standard turret board and PCB-mount applications
- Precision instrumentation and analog-to-digital converter (ADC) systems
Replaces / Drop-In Replacement For
The 6574S-40-103 is part of the Bourns 6574S servo mount series. Related single-turn 10kΩ potentiometers in the 6574S line include standard 6574S-1-103 configurations. Verify exact mounting and shaft specifications with your system integrator before substitution.
Works With
- Analog control circuits: Direct resistance-based feedback without requiring digital conversion
- 0–10V and ±5V analog systems: Compatible with standard industrial signal conditioning
- Solder turret mounting: Drop-in replacement for legacy control panels and analog boards
- MIL-STD certified equipment: Meets moisture and environmental stress screening standards
