MELF-FRN Series
MELF Metal Film Fusible Resistors
MELF-MOR, MELF Fusible Metal Film Resistor, is a nonflammable resistor, which is applied to protect electronic circuit boards and design.
Features :
- Flame Proof Coating / Low Temperature Coefficient
- Uniform in Fusing Time
Watt : 1/8W ~ 3W / Tolerance : 1% ~ 5% / Fusing Time : 15 secs, 20 secs, 30 secs, 40 secs, 1 min.
Features :
- Flame Proof Coating / Low Temperature Coefficient
- Uniform in Fusing Time
Watt : 1/8W ~ 3W / Tolerance : 1% ~ 5% / Fusing Time : 15 secs, 20 secs, 30 secs, 40 secs, 1 min.
| Item | Characteristics | Test Method |
|---|---|---|
| Operating Temp. Range | -55℃~155℃ | |
| Temperature Coefficient | ±200 ppm/℃ | JIS-C-5202; 5.2 |
| Short time over1oad | ±2% | Rating voltage X2.5 or Max. overload voltage For 5 sec. Whichever less |
| Resistance to soldering heat | ±2% | 260℃±5℃,5 sec±1 sec |
| Insulation Resistance | Over 103MΩ | JIS-C-5202;5.6- A |
| Load Life in Humidity | ±5% | 40℃±2℃,90%~95% RH,1000h,1.5h"on"/0.5h "off" cycle |
| Load Life | ±5% | 70℃±2℃,1000h,1.5h"on"/0.5h "off" cycle |
| So1derability | 90% Coverage / Min | 235℃±5℃,2 sec±0.5 sec |
| Bending test | ±1% | Holding point width 90mm， Bending 5mm，1 time |
| Non-Combustibility | The resistors shall withstand Overload test in accordance With Article UL-94，V-O without producing a fire hazard. | |
| TYPE | Size | Power Rating | Dimensions(mm) | |||
|---|---|---|---|---|---|---|
| L | D | C | S | |||
| Normal size | 0204 | 1.8W; 1/4Ws | 3.5±0.2 | 1.45±0.1 | 0.7±0.1 | 0.15±0.1 |
| 0207 | 1/4W; 1/2Ws | 5.7±0.2 | 2.2±0.1 | 0.8±0.2 | 0.2±0.1 | |
| 0309 | 1/2W; 1Ws | 8.5±0.3 | 3±0.3 | 1.7±0.2 | 0.3±0.1 | |
| 0411 | 1W; 2Ws | 10.5±0.3 | 4±0.3 | 2.3±0.2 | 0.3±0.1 | |
| 0515 | 2W, 3Ws | 14.5±0.3 | 4.5±0.3 | 2.3±0.2 | 0.3±0.1 | |
