PC-199 Series Thick Film Rotary Potentiometers
Thick film rotary potentiometer mounted on ceramic base with 19mm housing diameter
Metal-shielded housing with isolated rotor and carbon wiper actuated by metal shaft
Resistance range 100Ω to 4.7MΩ (E6 series values), linear law (A)
Power dissipation 1.0W at 40°C; derates to 25% at 70°C
Limiting voltage 350V
Mechanical angle 240° ±10°; electrical angle 230° ±10°
Rotational life 100,000 cycles
Resistance tolerance ±20% for values up to 470kΩ; ±30% above 470kΩ; ±10% available on request
Climatic category 55/100/56
Available as standard or hermetic (H) version on request
Available in high running torque variant (suffix R)
Terminal options: PCB pins (PC) or solder tags for cable connection (PCP)
What are the PC-199 Series Thick Film Rotary Potentiometers?
The PC-199 is a thick film rotary potentiometer built on a ceramic base and enclosed in a metal shield housing, combining the thermal stability and high dissipation capacity of ceramic-substrate thick film technology with the mechanical robustness expected of industrial control components. Unlike the carbon-on-paper construction of the PR series panel potentiometers, the PC-199 uses a thick film resistive element deposited directly onto a ceramic substrate, giving it substantially superior stability over temperature and time, and a higher power handling capability within a compact 19mm housing footprint.
The actuating mechanism consists of an isolated rotor carrying a carbon wiper that traverses the thick film resistance track as the metal shaft is rotated. This isolated rotor design electrically separates the shaft from the resistance element, improving safety and reducing the risk of parasitic conduction paths in high-voltage or noise-sensitive environments. The metal housing shields the resistive element from external electromagnetic interference and provides physical protection against contamination and mechanical damage. A hermetic sealed variant (suffix H) is available on request for applications requiring protection against moisture, dust, or corrosive atmospheres.
The resistance range spans 100Ω to 4.7MΩ using E6 preferred values, all in a linear (A) taper characteristic. The mechanical rotation angle is 240° ±10°, with the electrically active arc spanning 230° ±10°. Rated power dissipation is 1.0W at 40°C, derating linearly to 25% of rated power at 70°C. The limiting voltage of 350V confirms suitability for industrial line-voltage-referenced circuits. Rotational life is rated at 100,000 cycles, reflecting the durability demands of industrial control equipment where potentiometers may be adjusted repeatedly over the product lifetime.
Resistance tolerance is ±20% as standard for values at or below 470kΩ, widening to ±30% above that threshold, with a ±10% option available on request across the range. Two terminal configurations are offered: the PC variant provides PCB-mount pins for direct board insertion, while the PCP variant uses solder tags suited to cable attachment in panel-wiring and field-installation scenarios. A high running torque variant (suffix R) is available for applications where a firmer, more deliberate feel is required to prevent accidental adjustment. All units are supplied in bulk plastic bag and carton box packaging.
PC-199 Series Thick Film Rotary Potentiometers Specifications
A practical overview for engineers and procurement teams evaluating resistive solutions.
Model: PC-199
Resistor type: Variable
Description: 19mm, hermetic cermet potentiometer
Power Rating: 1W
Resistance (Ω): 100~2.2M
Tolerance (%): ±10, ±20, ±30
Applications of the PC-199 Series Thick Film Rotary Potentiometers
Where RARA variable resistors are deployed in the field.
Industrial process control equipment — setpoint and reference adjustment requiring high dissipation and long-term stability
Power supply and voltage regulation circuits — output voltage and current limit setting in industrial power equipment
Motor drive and variable-speed drive systems — speed reference and torque limit adjustment potentiometers
Industrial automation and PLC-based control panels — analogue input scaling and bias adjustment
Test and measurement instrumentation — calibration and range adjustment in precision industrial instruments
High-voltage control circuits — reference and divider networks operating at or near the 350V limiting voltage
Harsh-environment industrial equipment — hermetic variant for moisture, dust, and corrosion-resistant installations
Medical and laboratory instrumentation — stable, repeatable control adjustment in sensitive measurement equipment
Telecommunications and signal processing equipment — level and impedance trimming in line-powered systems
General-purpose industrial control panels — rotary control adjustment where 1W dissipation, ceramic substrate stability, and 100,000-cycle service life are required
Related Products of the PC-199 Series Thick Film Rotary Potentiometers
Model: DOW
Resistor type: Variable
Description: Wire wound potentiometer
Power Rating: 4W
Resistance (Ω): 22~47k
Tolerance (%): ±2, ±5
Model: DG
Resistor type: Variable
Description: Wire wound potentiometer
Power Rating: 2W
Resistance (Ω): 22~3.3k
Tolerance (%): ±5, ±10
Model: BC1
Resistor type: Variable
Description: Variable power rheostat
Power Rating: 12.5W~150W
Resistance (Ω): 0.5~5.1k
Tolerance (%): ±5, ±10
TCR (ppm/C): 200~400
Model: BSR/BSQ
Resistor type: Variable
Description: Slide type variable power resistor
Power Rating: 200W~2000W
Resistance (Ω): 0.5~200 max.
Tolerance (%): ±10
Why Choose RARA Variable Resistors
What sets RARA apart for engineers and procurement managers in industrial and automotive markets.
01
Full Spectrum Coverage
From 0.1W carbon signal potentiometers to 3000W industrial wire wound rheostats — RARA covers the complete variable resistor spectrum from a single ISO 9001 certified supplier.
02
Hermetic Sealed Options
PC-199 and CW-18 hermetically sealed cermet models resist moisture, dust, and contamination — extending service life in outdoor, marine, and industrial environments where standard potentiometers degrade rapidly.
03
Precision Wire Wound
DM, DOW, and DG precision wire wound potentiometers deliver the accuracy and repeatability needed for calibration, instrumentation, and closed-loop feedback applications.
04
Global Track Record
Trusted by Siemens, Rockwell, Schneider Electric, and Hanwha — deployed in industrial control and power regulation systems across six continents.
