Professional Trimmers Type 4270 Series Type 4270 Series Characteristics Electrical Small modern and reliable, this is a range of 6mm square multiturn trimming potentiometers well suited to industrial and professional applications. For stability, the range has a cermet resistance element. The Resistance Range: Resistance Values: Resistance Tolerance: End Resistance: Slider Current: Power Rating: Isolation Voltage: Limiting Element Voltage: Breakdown Voltage: Insulation Resistance: Resolution: Rotational Noise (CRV): Electrical Adjustment: 50R to 2M 1, 2 and 5 in each decade 10% 2 Ohms or 1% whichever is the greater. 50 mA maximum. 0.25W at 70C derating to zero at 125C 300 V dc or ac peak maximum 250 V dc or ac RMS maximum 420 VAC 1000 M at 500 V dc Essentially Infinite 3 Ohms or 3 %, whichever is greater maximum. 12 1 turns Characteristics Mechanical trimmer is actuated by a lead screw with slipping clutch at each end of travel. Components from this range are available with various adjustment configurations. They are all fully sealed to withstand immersion in normal board washing solvents. Key Features High Resolution Cermet Element Reliable, Quality Performance Choice of Adjustment Styles 0.25 Watt Rating at 70C Low Temperature Coefficient Space-Saving Size Fully Sealed for Board Washing End Stop: Starting Torque: Mechanical Adjustment: Weight: Slipping clutch action, wiper idles < 21mNm 14 turns, nominal 0.4gm maximum Characteristics Environmental Temperature Range: Thermal Shock: Temperature Coefficient: Shock: Vibration Severity: Rotational Life: Load Life at 85C: Sealing: -55C to +125C 5 Cycles -55C to +125C 250ppm/C 100g 10 - 500Hz; 10g (0.75mm or 98m/s2) 200 Cycles R <2% after 1000 hours Sealed for board washing Dimensions How to Order 4270 W 502 M Common Part Pin Layout Resistance Value Tolerance The first two digits are significant figures of resistance value and the third denotes the number of zeros following. K - 10 % W - Top Adjust 4270 X - Side Adjust Literature No. 1773167 Issued: 10-05 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. e.g. 1K: 102 5K: 502 100K: 104 Specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com