Carbon Composition Resistors Type CBT Series Type CBT Series Characteristics Electrical Power at 70C Ambient: CBT25 CBT50 0.25 Watts Derating to 0 at +125C 0.5 Watts Derating to 0 at +125C Maximum Voltage: 250 Volts 350 Volts Resistance Range: 1R0 - 5M6 1R0 - 22M Resistance Values: 5% E24 Series 10% E12 Series 20% E6 Series Voltage Coefficient: composition, which is the traditional medium for absorbing high energy 0.035%/V Limiting Element Voltage: 250 Volts 350 Volts Maximum Overload Voltage: 400 Volts 700 Volts Insulation Resistance: The CBT series of resistors is constructed utilising solid carbon 0.035%/V 1000 M minimum Characteristics Environmental pulses, in cases of high inrush current. Operating Temperature Range: These resistors have evolved over Temperature Cycles: (-55C to +125C, 5 cycles) R/R 2% withstand capabilities, whilst remaining Load Life (1000 hours at 70C): R/R 10% very Resistance to Solder Heat: (350C for 3 seconds) R/R 3% Short Time Overload: (2.5 x Rated Power for 5 seconds) R/R 2% Humidity (40C, 95%RH, 240 hrs): R/R 3% many years to have excellent pulse stable. These improved characteristics have been achieved by prudent selection of materials of optimum physical properties and -55C to +125C by advances in the manufacturing process. DimensionsKey Features Designed for Pulse Withstand Range of Resistance Tolerances Solid Carbon Composition Low Cost, High Performance Style L D l d Two Sizes Available CBT25 6.3 0.7 2.4 0.1 27 min. 0.6 Wide Range of Resistance Values CBT50 9.50.8 3.60.2 25 min. 0.7 Supplied Ammo Pack in boxes of 2000 Pulse Withstand Characteristics Charging and Discharging a 2000 pF Capacitor for 100 Cycles 10 10 0 0 a b b -10 -30 c CBT25 a: 1.2M b: 33k c: 1k -20 0 2 R/R(%) R/R(%) a c -10 CBT50 a: 1.2M b: 10k c: 1k -20 4 6 8 10 12 14 -30 0 2 4 6 8 10 12 14 Voltage (kv) Voltage (kv) How to Order CBT 25 J 10K Common Part Size Tolerance Resistance Value J - 5% 1 ohm (1 ohm) 1R0 Carbon Composition Resistor 25 - 0.25W K - 10% 50 - 0.5W 1K ohm (1000 ohms) 1K M - 20% 100K ohm (100000 ohms) 100K 1M ohm (1000000 ohms) 1M Literature No. 1773192 Issued: 12-05 Dimensions are shown for reference purposes only. Dimensions are in millimetres unless otherwise specified. Specifications subject to change. www.tycoelectronics.com passives.tycoelectronics.com