250W LED Load Resistor Wirewound For Direct Heatsink Mounting
Brand Name:ZENITHSUN
Certification:RoHs
Model Number:RH
Minimum Order Quantity:10pcs
Delivery Time:8-10 working days
Payment Terms:T/T, L/C, D/A, D/P, Western Union,paypal
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Location:
Shenzhen Guangdong China
Address:
Yikang business building 11128#, Huarong Road 33#, Dalang Street, Longhua District, Shenzhen 518109, Guangdong, China
Supplier`s last login times:
within 28 hours
Product Details
Company Profile
Product Details
250W Aluminum Housed Wirewound LED Load Resistors,For Direct Heatsink Mounting
Structure :
1.The resistors core components are made of insulating and
high-temperature resistant materials as the resistors
framework,evenly wound with high-quality alloy wires.Metal aluminum
shell potted with high insulation non-combustible electronic
paste,so that the aluminum shell and the resistance core components
are closely combined into a solid entity,not affected by external
air,vibration and dust,high stability and thermal conductivity.
2.The aluminum shell is made of high-quality industrial 6063
aluminum,and the surface is high-temperature anodized to achieve
attractive appearance and great heat dissipation.
Features
1.We supply standard and custom designed aluminium housed resistors
for general-purpose use,power supplies,power generation and the
traction industry.
2.The RH is a range of extremely stable,high quality wire-wound
resistors capable of dissipating high power in a limited space with
relatively low surface temperature.
3.The power is rapidly dissipated as heat through the aluminium
housing to a specified heatsink.
4.The resistors are made from quality materials for optimum
reliability and stability.
5.We can test resistors to conform to relevant international or
customer specifications.
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 | ±100～±250PPM/℃ |
| Rated Load | 40℃,rated voltage,1hour | △R≤±(3％+0.1Ω) |
| Short Time Overload | 5 times rated power for 10s;10 times rated power for 5s;25 times rated power for 1s | △R≤±(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 | 1000V DC | 50M-1000MΩ1Min |
| Terminal Tensile Strength | wire diameter ≤1.5 with 20N,wire diameter ≥1.5 with 40N,terminal
tension 20N copper end /stainless steel end,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) |
| Thermal Shock | At 30℃,30min,-55℃,15min | △R≤±(0.5％+0.1Ω) |
| Humidity Resistance | Temp.:40±2℃ ,Humidity: 90％-95％.240hours | △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 Inverters,automation
equipment,acoustics,prescaler,aging power testing,auto
accessories,auto LED industry,Balancing
resistor,filter,crowbar,capacitor charge & discharge.
For
Loading,braking,pulse,charging,discharging,starting,buffering,discharging,ect.
Key Features/How to order
1.Rated Power :5W-300W;
2.Resitance Value:0.5 ohm -33K ohm;
3.Custom designs
4.Inductive or non-inductive
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250W LED Load Resistor Wirewound For Direct Heatsink Mounting
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