SMD Economy Trimmers Type 3103 Series Type 3103 Series Characteristics - Electrical Resistance Range: 200R to 1M Resistance Values: 1, 2, 5 in each decade Resistance Tolerance: ± 30% Temperature Coefficient of Resistance: ± 500ppm / °C (25 to 85°C) ± 750ppm / °C (-25 to 25°C) Resistance Law: Linear Max. Operating Voltage: 50V dc Contact Resistance Variation: 5% of Nominal Max. Power Rating: 0.05W at 50°C The latest miniaturised sealed trimmer Effective Electrical Angle: 260° ± 20° from Citec is the smallest, lightest sealed potentiometer available and the most cost effective. Consuming just 2 Characteristics - 10.5mm of board real estate, it has Mechanical been developed specifically for new generation hand held equipment, Rotational Torque: 1 to 15 mNm where double sided component place- Adjustment (End Stop Torque): 20 mNm ment is often unavoidable. These 3mm Weight: 0.09 grams devices are only 1.8mm high. Due to Terminal Robustness: Horizontal 10 N the innovative carbon on polymer tech- Vertical 5 N nology, the device sets new standards in low cost high reliability electro mechanical components. Characteristics - Environmental Key Features Temperature Range: - 25°C to 70°C � Tiny 3mm Square Size Rotational Life: After 20 cycles ∆R ± 15% � Latest Carbon Polymer Load Life: ∆R Within + 2%, -15% after 500 hrs at 50°C Technology Under Load � Suitable For Washing Sealing: Dustproof - Suitable for Washing � Delta Terminals Prevent Humidity Load Life: ∆R -10%, +15% after 500 hrs at 40°C, RH 90 to Solder Bridging 95%, Under Load � Super Thin - Less Than 2mm High � Packed in 8mm Standard Derating Curve Plastic Tape � Integrated End Stop 100 80 60 40 20 0 010 20 30 40 50 60 70 8085 Ambient Temperature (°C) When the ambient temperature exceeds 50°C, reduce the rated power and current in accordance with the derating curve shown Literature No. 1773123 Dimensions are shown for Dimensions are in millimetres Specifications subject to www.tycoelectronics.com Issued: 08-05 reference purposes only. unless otherwise specified. change. passives.tycoelectronics.com Rated Power (%) SMD Economy Trimmers Type 3103 Series Dimensions Ambient Temperature Care must be taken with regard to ambient temperature of potentiometers Load should be derated in accordance with specified derating curve, at high temperatures. Anode Oxidation When D.C. current is used and the trimmer is to remain in one set position for a long period, it is good practice to connect the negative line to the resistance element and the positive line to the wiper terminal. With the polarity reversed, particularly in moist conditions, it is possible for surface oxidation of the contact to cause a resistance increase. Storage For maximum possible shelf life do not disturb polythene sleeve until you are ready to use. How to Order 3103 X 502 N Common Part Orientation Resistance Value Tolerance The first two digits are significant figures of X - Terminals 1 and 3 resistance value and the 3mm Sealed Trimmer away from the N - 30 % third denotes the number sprocket holes of zeros following. e.g. 1K: 102 5K: 502 100K: 104 Literature No. 1773123 Dimensions are shown for Dimensions are in millimetres Specifications subject to www.tycoelectronics.com Issued: 08-05 reference purposes only. unless otherwise specified. change. passives.tycoelectronics.com