Painted Coated High Precision Wirewound Resistors with tolerance 1%
Structure :
1.Leads are welded to the end caps.Plated caps(with leads) are force-fitted before the assembly is trimmed using advanced equipement to ensure excellent performance and low electrical noise.
2.Winding resistance wires around non-alkaline heat-resistance ceramic core which is added with an outer layer of heat and humidity resistance and non-corrosive protective material,and a coating of silicon resin paint.
3.For high resistance value,wires are replaced by metal oxide films.
4.Non-inductive & variable type on requests;
Features:
1.Gray,green,and black are available.KNZ and KNZN 1/2W-5W,marks are ring;
KNZ and KNZN 5W-30W and KNZ ,marks are letters.
2.Standard type & non-inductive type available;marks are ring or letter available.
3.Low noise,resistance to high temperature, low temperature coefficient,high overload power,surface nonflammable.
4.For non-standard technical requirements and custom special applications, please contact
us to discuss the details.
5.Conforms to the ROHS standard and the LEAD-FREE non-lead standard.
Specification
| Performance Charactertics | |
| Test | Conditions of Test | Testing Results |
| Resistance Tolerance | Testing Voltage ≤3V,Ambient Temperature 25℃ | B---D---F---G---J--K |
| Rated Load | 40℃,rated voltage,1hour | △R≤±(3％+0.1Ω) |
| Short Time Overload | 5 times rated power for 10s | △R≤±(0.2％+0.1Ω) |
| Dielectric Withstand Voltage | 2 times Rated Power Voltage +1kv AC 60s (with grounding), leakage current 2.5mA ;
2 times Rated Power Voltage +2kv AC 60s (with grounding), leakage current 2.5mA ; | △R≤±(0.1％+0.05Ω) |
| Insulation Resistance | 500V DC | ≥10GΩ1Min |
| Terminal Tensile Strength | 40N | No off |
| Vibration resistance | 1.5mm,10-55-10Hz,each 2hours | No damage,No off |
| Load Life | at rated voltage,90 min "On",30 min "Off" ,total 500hours | △R≤±(3％+0.1Ω) |
| Low Temperature Resistance Testing | store at -65℃±3℃ for 2H | △R≤±(1%+0.1Ω) |
| High Temperature Resistance Testing | store at 70 ℃± 2 ℃ for 16h, connect the rated voltage DC circuit for 1s | △R≤±(1%+0.1Ω) |
| Non-flammability | 10 times rated power, power on for 5s | without combustion |
Applications:
Widely used in circuit,ballast ,power tools ,consumer applications ,power supplies,Welders ,High voltage applications ,home entertainment,appliances.
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