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 Voltage Power 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, non-standard technical requirements, or custom special applications, please contact us.
Tubular High Voltage Ceramic Resistors (RI85) Dimensions |
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Type | Power Rating |
Resistance Value (Ω) |
Resistance Tolerance |
Temperature Coefficient (PPM/°C) |
Dimensions (Unit: mm) | Max working voltage |
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ΦD±2 | Φd±2 | L1±5 | L2±5 | T±1 | ||||||
RI85 | 200W | 100K~100G | 10% (K) 20% (M) |
≤100 | 28 | 15 | 185 | 200 | 10.5 | 50KV |
RI85 | 500W | 100K~500G | ≤100 | 34 | 20 | 205 | 220 | 15 | 50KV | |
RI85 | 800W | 100K~1T | ≤100 | 55 | 40 | 205 | 220 | 15 | 100KV |
(RI85) Power Derating Curve |
Test Item | Test Methods | Characteristics |
Moisture resistance | MIL Std. 202, method 106 (IEC68-2-3) | ΔR/R≤±0.1% typ., 0.25% Max. |
Insulation resistance | 500V 25°C 75% relative humidity | 10GΩ Min. |
Dielectric strength | 25°C 75% relative humidity | 1000V Min. |
Overload | 1.5×Pnom. 5 sec (do not exceed max. voltage) | ΔR/R≤±0.1% typ., 0.25% Max. |
Thermal shock | MIL Std. 202, method 107 Cond. C (IEC68-2-14) | ΔR/R≤±0.1% typ., 0.2% Max. |
Load life | 1000h at rated power (IEC115-1) | ΔR/R≤±0.1% typ., 0.25% Max. |
Non-Inductive Performance:
Serpentine Pattern Screen Printing Design:
RI85 | 200W | 1M | K | ||||
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