250W 10 Ohm Ultra High Power Resistor Non-Inductive Thick Film
250W 10 ohm Non-Inductive Thick Film Ultra High Power Resistors
Structure
1.Screen printing,resistor film printed layer with thickness of tens of microns,sintered at temperature.
2.The matrix is 96% aluminum oxide ceramic,with good thermal conductivity and high mechanical strength.The resistor film with precious metal ruthenium slurry,with stable electrical properties.
3.Surfaces in contact must be carefully cleaned.
4.Non-inductive,high power,small size,easy mounting,recommendations for mounting onto a water-cooled heatsink.
Features
1.Recommendations for mounting onto a heatsink to enhance the heat dissipation.
2.The bottom case is attached to the system heatsink,and the resistor dissipates the heat through the heat exchange between the bottom case and the heatsink.
3.The ambient temperature here refers to the bottom case temperature of the resistor,which is generally referred to the temperature in the center of the bottom case,easy mounting,low thermal radiation of the case ;
Specification
| Performance Charactertics | ||
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | B---D---F---G---J--K |
| Temperature Coefficients | R0:Room Temperature(T0)Resistance Value R1:Room Temperature T0+100℃(T1)Resistance Value |
±50～±500PPM/℃ |
| Short Time Overload | 5 times rated power ,but not more than 1.5 times the maximum continuous working voltage for 5 seconds | △R≤±(0.3％+0.1Ω) |
| Insulation Resistance | 500V DC | ≥10GΩ1Min |
| Room Temperature Durability | Rated votage,90mins on ,stop 30mins,the central bottom case temperature ≤ 85 ℃(120W-800W), the central bottom case temperature ≤ 25 ℃(30W-100W),total 1000hours |
△R≤±(0.5％+0.1Ω) |
| Humidity steady state | Temp.:40±2℃ ,Humidity:90％-95％.56days | △R≤±(0.25％+0.1Ω) |
| High/Low Temperature Resistance Testing | store at -55℃～125℃ for 2H, cycle 5times | △R≤±(1%+0.1Ω) |
| Working Ambient Temperature | -55℃～150℃ | / |
Applications
Widely used in Variable speed drive,power supply,control equipment,communication,automatic control,engine control, power electronics,medical devices,power transmission,capacitor voltage equalization,capacitor discharge, power load, automotive electronics,for variable speed drives,power supplies,control devices,robotics,motor control and other power designs.
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How to make an order:
ZMP250_Ohmic Value_Tolerance
For example:ZMP250 10R 5%
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