TOKEN RI85 High Power Voltage Resistors High Power Voltage Resistors Token High Voltage Resistors (RI85) Break Through 800 Wattage in High Power Applications Preview Token Electronics RI85 series has been developed to provide design engineers with high quality, high power, high voltage dividers for use in sophisticated system. The RI85 resistors use Token’s proprietary thick film metal glaze resistive element and Serpentine Pattern Design which provides ideal cost efficient, stability, high power and high voltage characteristics for a wide range of measurement, voltage divider circuits, and control functions in high voltage power electronics applications. Token RI85 Power Voltage Resistors are able to absorb large amounts of energy at high voltage while remaining non-inductive and heavy load characteristics. RI85 Resistors conform to the RoHS directives and Lead-free. Customed design, low TCR, resistance values, and tighter tolerances are available on request. The RI85 non-inductive metal glazed resistors are manufactured on proceeding of tube designed with tab terminal, thick-film printing, firing and laser trimming. By utilizing specific ceramic core materials with optimum processing, Token are able to control, very tightly in manufacturing, the important ultra-stable performance parameters TCR less than 100 ppm/°C. Voltage handle up to 100 KV and Wattage available 200W to 800W. This unique process is also offered in specific resistance values in a wide variety of sizes and terminations. The extraordinary operating stability of the Type RI85 resistors will improve the performance of your high voltage system. The RI85 Power Voltage Series is RoHS compliant and lead free. For customed designs, tighter tolerances, nonstandard technical requirements, or custom special applications, please contact us. Features - Rated Wattage from 200W to 800W. - Temperature Coefficient ≤ 100 ppm/°C. - Resistance Range from 100KΩ to 1TeraΩ. - Resistance Tolerance K(±10%), M(±20%). - Max Working Voltage from 50KV to 100KV. Applications - X-ray/imaging equipment, - EMI/lightning supression, Energy research, - Pulse modulators, Radar Pulse-forming networks, - Impulse voltage generators, Arc furnace damping, - Capacitor crowbar circuits, High voltage snubber circuits. Version 2010 http://www.token.com.tw/ rfq token.com.tw 01 of 04 TOKEN RI85 High Power Voltage Resistors Dimensions & Specification T ФD Фd L1 L2 Type RI85 RI85 RI85 Power Rating Resistance Value (Ω) 200W 500W 800W 100K~100G 100K~500G 100K~1T Resistance Temperature Tolerance Coefficient (PPM/°C) 10% (K) ≤100 20% (M) ≤100 ≤100 Dimensions (Unit: mm) ΦD±2 Φd±2 L1±5 L2±5 28 34 55 15 20 40 185 205 205 200 220 220 T±1 10.5 15 15 Max working voltage 50KV 50KV 100KV Remark: Rated Continuous Working Voltage (RCWV) shall be determined from RCWV = square root (power rating × resistance value) or Max Working Voltage listed above, whichever less. Power Derating Curve Rated Watts(%) 100 80 60 40 20 0 -50 0 25 50 100 150 200 Ambient Temperature(%) 02 of 04 http://www.token.com.tw/ 225 rfq token.com.tw 250 Version 2010 TOKEN RI85 High Power Voltage Resistors Performance Specifications Test Item Moisture resistance Insulation resistance Dielectric strength Overload Thermal shock Load life Test Methods MIL Std. 202, method 106 (IEC68-2-3) 500V 25°C 75% relative humidity 25°C 75% relative humidity 1.5×Pnom. 5 sec (do not exceed max. voltage) MIL Std. 202, method 107 Cond. C (IEC68-2-14) 1000h at rated power (IEC115-1) Characteristics ΔR/R≤±0.1% typ., 0.25% Max. 10GΩ Min. 1000V Min. ΔR/R≤±0.1% typ., 0.25% Max. ΔR/R≤±0.1% typ., 0.2% Max. ΔR/R≤±0.1% typ., 0.25% Max. RI85 Non-Inductive & Serpentine Pattern - Advance Technique Non-Inductive Performance: ● RI85 Non-Inductive Design which uses a serpentine resistive pattern that offers for zigzagging lines to carry current in opposite directions, thereby achieving maximum neutralizationof flux fields over the entire length of the resistor. ● This efficient non-inductive construction without derating of any performance advantages is ideal for applications where high frequency is required. Serpentine Pattern Screen Printing Design: ● Type RI85 Precision High Voltage Resistors combine Token’s Non-Inductive serpentine pattern, high thru-put screen printed silicone coating. ● The alignment of the gap in the serpentine resistor pattern with the gap in the coating pattern provides a complete encapsulation of the resistor element. ● The cap and lead assemblies are pressed onto the resistor core, finishing the resistor and providing rugged terminal attachment. Version 2010 http://www.token.com.tw/ rfq token.com.tw 03 of 04 TOKEN RI85 High Power Voltage Resistors How to Order RI85 200W 1M K Product Type. Rated Power.(W) Resistance Value. (Ω) Resistance Tolerance. Back to 1st Page -High Power Voltage Resistors (RI85) 04 of 04 http://www.token.com.tw/ rfq token.com.tw Version 2010