270 Datasheet, PDF (1/6 Pages) CTS Corporation – Commercial Miniature 5/8 (16mm) Diameter Composition Variable Resistors

Series 270
®
Commercial
Miniature 5/8"
(16mm) Diameter
Composition
Variable Resistors
• Miniature 5/8" (16mm) size
• Versatile mounting styles:
– bushing
– twist tab
– bend tab
– snap-in PC bracket
– solder lug or PC terminals
(shaft parallel or perpendicular to the panel)
• 100 Ω to 5 Meg Ω resistance range
• Molded or metal shafts
• SPST power switches
• Single, tandem, or concentric units
• Panel seal
• Rear extended shaft
Electrical and Mechanical Specifications
Resistance Range
100 Ω through 5 Meg Ω (linear taper).
Resistance Tolerance
Standard: ±20%
Special: Other tolerances available in most
resistance values.
Power Rating, Watts
1_{/4 watt per section through 100K}
1_{/5 watt per section above 100K}
Full rating @ 55°C derated to no load at 85°C,
linear taper, bushing mounted control on steel panel
4" x 4" x .050" (101.6mm x 101.6mm x 1.27mm).
(Derating required on two section controls.)
Voltage Rating
Bushings to Terminals:
High pot test, one minute — 750 VAC
Operating maximum
— 500 VDC
Across End Terminals:
350 VDC, load not to exceed listed wattage ratings.
Resistance Tapers
Standard: Linear, 10% Audio and 10% CCW Audio
Special tapers available to meet most requirements
Angle of Rotation
Total Rotation
Without Switch: 300° ± 5°
With Switch: 315° ± 5°
Effective Rotation
Without Switch: 300° (approximate)
With Switch: 290° (approximate)
Panel Mounting Information
Bushing Mount
Standard: Brass
(continued on next page)
Technical Data Sheet 1448C
Technical Data Sheet 1270E
CTS CORPORATION / MANUFACTURER OF RELIABLE ELECTRONIC COMPONENTS