MELF Surface Mount Wirewound Cylindrical Fixed Resistor 0207 0309 0411 0.25~3W For LED Lighting
I Cylindrical Fixed Resistor APPLICATION INFORMATION
When the resistor dissipates power, a temperature rise above the ambient temperature occurs, dependent on the thermal resistance of the assembled resistor together with the printed circuit board. The rated dissipation applies only if the permitted film temperature is not exceeded. These resistors do not feature a limited lifetime when operated within the permissible limits. However, resistance value drift increasing over operating time may result in exceeding a limit acceptable to the specific application, thereby establishing a functional lifetime.
II Cylindrical Fixed Resistor Applications
- Water heaters
- Welding equipment
- Power supplies for plasma cutters
- Gas and diesel powered engine controls
- Electric meters
- Utility meters
- Communications equipment
- Power/network/phone distribution equipment
- Lighting
- Thermostats and HVAC controls
III Cylindrical Fixed Resistor Features
1. Good performance of anti-surge impact.
2. Good fusing consistency
3. Small size , all-welded construction, lead free and easy to install.
4. Excellent safety performance
5. High temperature molded encapsulation.
6. Flex termination for absorbing thermal expansion
7. Fusible resistor for constant voltage designed for overload protection
8. Special trimming to provide the fusing characteristic
9. Flame retardant coating
IV Cylindrical Fixed Resistor Construction
1.Terminal
2.Marking
3.Insulation coating
4.Matrix
5.Wire wrapping
V Cylindrical Fixed Resistor Electrical Parameters
| Type | Dimension(mm) |
| L | D Max | D1 Max | D2 Max | S | C |
| 0207 | 6.1±0.3 | 2.5 | 2.1 | 2.6 | 0.2±0.05 | 1.2±0.1 |
| 0309 | 8.9±0.3 | 3.4 | 2.9 | 3.45 | 0.2±0.05 | 1.6±0.1 |
| 0411 | 11±0.5 | 4.6 | 4 | 4.7 | 0.25±0.05 | 1.85±0.1 |
Remarks: L is the total length of the double cap, D is the thickness of the paint,
D1 is the total height of the inner cap, D2 is the total height of the outer cap,
S is the thickness of the iron cap, and C is the width of the outer cap.
VI Cylindrical Fixed Resistor Packaging reel sizes (unit:mm)
| Type | ΦA | ΦB | ΦC | W | T | Plastic Tape(EA) |
| 0207 | 178.5±1.5 | 60.0+1.0 | 13.0±0.5 | 13.0﹢0.5 | 15.5±0.5 | 2,000(7.0”) 7,000(13”) |
| 0309 | 330±1.5 | 100.0+1.0 | 13.0±0.5 | 17.0±0.5 | 19.0±0.5 | 2,500(13”) |
| 0411 | 330±1.5 | 100.0+1.0 | 13.0±0.5 | 25.0±0.3 | 27.0±0.5 | 2,000(13”) |
OCP Overcurrent Protection
Fuse
Fuse Link
Thermistor
Film Resistor
Wirewound Resistor
Inductor
Frequently Asked Question FAQ
Q: Are you manufacturer ?
A: Yes, we are manufacturer and distributor of famous brand such as Littelfuse.
Q: Which city does your factory in ?
A: Dongguan City,Guangdong Province, China
Q: May i know your working time ?
A: Official working time is 8:00 ~ 12:00 AM, 1:30 ~ 5:30 PM.However, sales in our overseas department will do overtime working and 7x24hours online.
Q: Do you accept custom made ?
A: Yes, we are professional in customization model based on rich experiences and professional engineering.It’s helpful if you can provide drawing or detailed specification should be.
Q: May i know your lead time ?
A: Lead time is 7 days for standard model and exact lead time depend on detailed requirements if special model selected.
Q: May i receive samples before place order ?
A: Yes, generally samples is free but sample cost should be charged if quantity is too many ,product cost is too much or new mould fee required.
Q: What’s your payment terms ?
A: T/T, Paypal etc.
Q: What’s currency you can accept ?
A: Mainly US dollars and Chinese Yuan
Q: Does your package method safe for transportation ?
A: Yes, our package would be 10~1000pcs per plastic bag -> multiple bags per box -> multiple boxes per carton and it is safe for express/air/boat shipment.
Q: What’s your MOQ ?
A: In general , MOQ is 1000pcs and different for special model.
Product Tags:
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0207 0309 3W Fixed Wire Wound Resistor 10 Ohm Wire Wound Resistor For LED Lighting Images
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