Metal oxide film resistor
MOR-2WSS-3K3-J
TYPE |
L 4 |
D t |
H:t:3 |
d:t0.1 |
ResistanceRange |
MaxWorking |
RSU | ||||||
1W |
6.8 | 2.6:t0.5 |
28 |
0.6 |
0.220-1MO |
350V |
2W |
9 |
3.5 |
28 |
0.8 |
220-1MO |
500V |
3W |
15 |
5 |
28 |
0.8 |
O.220-1MO |
750V |
Steps | Temperature(k) | Time (minutes) |
1st step | -55 ± 3 | 30 |
2nd step | Room temp. | 3 |
3rd step | 155 ± 3 | 30 |
4th step | Room temp. | 3 |
7.6 Moisture-proofLoad Life:
The resistors arrayed are placed into a constant temp./humidity oven at the temp. of 40 ±2°c and the humidity of 90~95%, then rated power is applied for 1.5 hours and cut off for 0.5 hour. The similar cycle will be repeated for 500+24 -0 hours in total (including cut-off time). Then remove the voltage, taking the resistors out of the oven and leaving them at room temp. for one hour. The resistance value change ratebetween pre-and- post test shall be within ±5%. There also shall be no evidence of remarkablechange on appearance, and the markingshall not be illegible.
7.7 Solder-ability:
The leads with flux are dipped in a melted solder of 235 ±5°c for 2 seconds,more than 95% of the circumference of the lead wires shall be covered with solder.
7.8 Resistance to Soldering Heat:
Two leads are together dipped in a melted solder of 270 ±5°c for 10 ±1seconds, or 350 ±10°c for 3.5 ±0.5 seconds, Then remove the resistorsand leaving them at room temp. for one hour. The resistance value change rate between pre-and-post test shall be within ±1%.
7.9 Nonflammability:
The resistors are applied the power of 16 times the rated wattage for 5 min. and
shallnot get flame.
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