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MO5S [TTELEC]

Power Metal Oxide Film Resistors; 功率金属氧化膜电阻
MO5S
型号： MO5S
厂家： TT Electronics    TT Electronics
描述：

Power Metal Oxide Film Resistors
功率金属氧化膜电阻
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Power Metal Oxide  
Film Resistors  
Welwyn Components  
MO-S Series  
Small size for power rating  
•
Can replace carbon composition in many  
pulse handling applications  
•
Flameproof protection  
•
Electrical Data  
MO1/2S  
0.5  
MO1S  
1.0  
MO2S  
2.0  
MO3S  
3.0  
MO5S  
5.0  
Power rating at 70°C  
Restance range  
Limiting element voltage  
TCR  
Isolation voltage  
Resistance tolerance  
Standard values  
watts  
ohms  
volts  
ppm/°C  
volts  
10R - 50K  
250  
10R - 100K  
350  
10R - 100K  
500  
350  
350  
140  
500  
5, 10  
E24 preferred  
80  
700  
35  
%
Thermal impedance  
Ambient temperature range  
°C/watt  
°C  
110  
60  
-55 to +155  
Physical Data  
Dimensions (mm) and Weight (g)  
pcb  
mounting  
Min  
bend  
Wt.  
Type  
L max.  
6.2  
9.0  
12.5  
14.5  
25.0  
D max.  
2.5  
3.6  
4.2  
5.3  
f min.  
21.0  
19.6  
17.8  
23.8  
27.6  
d nom. centres  
radius  
0.6  
1.2  
1.2  
1.2  
1.2  
nom.  
0.3  
0.5  
0.9  
1.1  
4.3  
MO1/2S  
MO1S  
MO2S  
MO3S  
MO5S  
0.6  
0.8  
0.8  
0.8  
0.8  
10.0  
12.5  
15.0  
20.0  
30.0  
d
D
L
f
8.5  
Construction  
Marking  
The tin oxide resistance element is deposited onto a high  
MO1/2S, MO1S, MO2S and MO3S resistors are colour coded  
with four bands. IEC 62 colours are used. For larger sizes type  
reference, resistance value and tolerance are legend marked.  
The resistance value marking conforms to lEC 62.  
purity ceramic rod. End caps are force fitted and termination  
wires are welded to the end caps. The element is adjusted to  
the required resistance value by a helical cut; finally a cement  
protection is applied to the resistor body prior to marking  
with indelible ink.  
Solvent Resistance  
The body protection and marking are resistant to all normal  
industrial cleaning solvents suitable for printed circuits.  
Terminations  
Material  
Resistor sizes up to and including the MO3S  
use solder coated copper terminations. MO4S  
and MO5S use solder coated steel cored  
terminations.  
Flammability  
The resistor coating will not burn or emit incandescent  
particles under any condition of applied temperature or  
power overload.  
Strength  
The terminations meet the requirements of  
IEC 68.2.21.  
Solderability The terminations meet the requirements of  
IEC 115-1, Clause 4.17.3.2.  
General Note  
Welwyn Components reserves the right to make changes in product specification without notice or liability.  
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.  
A subsidiary of  
TT electronics plc  
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK  
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email :info@welwyn-tt.com · Website: www.welwyn-tt.com  
Issue C · 07.04  
149  
Power Metal Oxide  
Film Resistors  
MO-S Series  
Welwyn Components  
Performance Data  
Maximum  
Load at rated power: 1000 hrs at 70°c  
Shelf life: 12 months at room temperature  
Derating  
∆R%  
∆R%  
5
2
See derating curve  
Climatic  
∆R%  
1
40/125/56  
0.5  
Climatic category  
Temperature rapid change  
Resistance to solder heat  
∆R%  
∆R%  
0.5  
Application Notes  
MO-S Series Derating Curve  
100  
90  
80  
70  
60  
50  
40  
30  
20  
10  
0
1. If the resistors are to dissipate full rated power, it is  
recommended that the terminations should not be  
soldered closer than 4mm from the body.  
2. Due to operating temperature limitations imposed by some  
pcb materials, derating may be necessary. An estimate of  
the temperature rise to be expected can be calculated  
using the thermal impedance figures given under Electrical  
Data.  
60  
80  
100  
120  
140  
160  
180  
200  
220  
240  
Ambient Temp  
3. MO-S resistors can also be supplied pre-formed.  
See lead form section for details.  
Figure 1  
Packaging  
Our standard packaging for MO1/2S, MO1S, MO2S and MO3S  
is taped and ammo packed, MO5S is taped and reeled. The  
critical dimensions are shown in Figure 1.  
c
The component wires will not protrude beyond the outside  
edge of the tapes.  
f1  
f2  
b
6
6
Pre-formed resistors are supplied loose packed in plastic bags  
or boxes.  
Body Location f1 – f2 ≤ 1.4 mm  
Alternative packaging available by request.  
Type  
MO1/2S MO1S MO2S MO3S MO5S  
b
c
52  
5
52  
5
52  
5
67  
10  
85  
10  
Standard Quantities Per Package  
Type  
MO1/2S MO1S MO2S MO3S MO5S  
Reel  
5000  
5000  
2500  
2500  
2500  
1500  
1000  
1000  
700  
n/a  
Ammo pack  
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK  
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com  
Issue C · 07.04  
150  

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