Resistors Capacitor Discharge Resistors CDR Series Excellent reliability Suitable for immersion in capacitor dielectric fluid Voltage ratings up to 20kV Excellent overload capability Robust terminations Resistance values up to 10M RoHS compliant All parts are Pb-free and comply with EU Directive 2011/65/EU (RoHS2) Electrical Data CDR01 CDR02 CDR03 CDR04 CDR05 Power rating at 70°C (in air) watts 0.63 1 1.75 2.5 3.75 5 Power rating at 70°C (in dielectric fluid) watts 1.25 2 3.5 5 7.5 10 Limiting element voltage CDR06 not applicable 1 Overload power (90s at 25°C in dielectric fluid) watts 20 30 50 75 100 150 kV 2 6 6 10 10 20 20 Overload voltage (90s in dielectric fluid) Resistance range ohms Resistance tolerance 100K to 10M % 10 Values E6 preferred Ambient temperature range °C -55 to 155 Note 1: No LEV applies to CDR; the maximum operating voltage (dc or ac rms) is given by √(Pr.R), where Pr is the relevant power rating for air or fluid and R is the resistance value. Note 2: Overload voltages are dc or ac peak values. Physical Data Dimensions (mm) and weight (g) L H Type ±1 ±1 W ±0.5 DØ ±0.05 P1 ±1.0 F ±5 Weight CDR01 25.4 12.7 2.25 0.8 20.3 50 2 CDR02 25.4 12.7 2.75 0.8 20.3 50 2.5 CDR03 33.9 20.33 2.25 0.8 30.5 60 3.5 CDR04 33.9 20.33 2.75 0.8 30.5 60 5 CDR05 50.8 25.4 2.25 0.8 45.7 60 5.8 CDR06 50.8 25.4 2.75 0.8 45.7 60 8.2 L W H P F DØ Note 1: Termination pitch dimension P is measured between the lead centres at 1mm from the resistor body. General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 07.14 Capacitor Discharge Resistors CDR Series Overload Performance CDR06 CDR05 CDR04 CDR03 CDR02 CDR01 Construction CDR is a high voltage planar style resistor. Pd/Ag terminations are printed and fired onto the front face of a 96% alumina substrate. A resistor material is printed with a high voltage design between the terminations and after firing gives an excellent high voltage performance. This is then laser adjusted to target value before being coated in a glass material. Hot tin dipped copper wire terminations are then fitted using Sn/Ag/Cu solder. The product is 100% measured for resistance value. It is cleaned of all flux residues and ionic contamination in order to ensure compatibility with capacitor dielectric fluid applications. Marking Type and resistance value are legend marked on the front of the component. Termination Lead Pull Strength Each termination lead shall withstand a tensile load of 1kg at an angle of 90° to the plane of the resistor, with no mechanical failure admitted, such as breaking of the resistor substrate or shearing of the termination lead wire or solder. Solderability The terminations meet the requirements of IEC 115-1 Clause 4.17.3.2 Performance Data Requirement Typical Load at rated power in air (1000 hours at 70°C) ΔR% ≤1 <0.25 Load at rated power in fluid (1000 hours at 70°C) ΔR% ≤1 Derating from power at 70°C Vibration (9-200Hz @ 5mm / 50ms-2, 10 sweeps @ 1 octave / min, 3 axes) Termination pull strength (applied at 90° to plane of body, no damage visible) Overload in dielectric fluid (90s at 25°C, see Overload Ratings graph) General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. <0.25 Zero at 155°C ΔR% ≤1 <0.25 kg ≥1 >4 ΔR% ≤0.5 <0.1 BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 07.14 Capacitor Discharge Resistors CDR Series Ordering Procedure Part Number: CDR04-680KKB01 (CDR04, 680 kilohms ±10%, bulk packed) C D R 0 4 - 1 6 8 0 K 2 1 Type 2 Value 3 Tolerance K = ±10% CDR01 E6 = 3/4 characters CDR02 K = kilohms CDR03 M = megohms K B 3 0 1 4 4 Packing B01 all sizes 100/box CDR04 CDR05 CDR06 General Note TT Electronics reserves the right to make changes in product specification without notice or liability. All information is subject to TT Electronics’ own data and is considered accurate at time of going to print. BI Technologies IRC Welwyn www.ttelectronics.com/resistors © TT Electronics plc 07.14