For further information
on packaging, please refer
to Appendix C.
MO
metal oxide power type leaded resistor
features
•Flameproof silicone coating (UL94V0)
•Suitable for automatic machine insertion
•High reliability for performance
•Marking: Blue-gray body color with color-coded bands
Axial: T52, T521, T631
Stand-off Axial: L52, L521,
L631
, L, U, M Forming
ordering information
2 significant
figures + 1
multiplier
“R” indicates
decimal on
value <10Ω
1/2: 0.5W
1: 1W
2: 2W
3: 3W
C: SnCu
L: SnPb:
Non-standard
Contact factory
for inquiries
MO
MOX
G: ±2%
J: ±5%
MO 1 C
Termination
Material
Type Power
Rating
Nominal
Resistance ToleranceTaping and Forming
New Part # T52 473
A: Ammo
R: Reel
Packaging
A J
dimensions and construction
d
D
Marking
Flame Retardant Coating
End
Cap Lead
Wire
L l
C
Ceramic Body
L
MO1/2
MOX1/2
.354±.039
(9.0±1.0)
.437
(11.1)
.138±.02
(3.5±0.5)
.028
(0.7) .945 Min.
(24.0 Min.)
1.18±.118
(30.0±3.0)
1.50±.118
(38.0±3.0)
.031
(0.8)
.157±.02
(4.0±0.5)
.236±.039
(6.0±1.0)
.354±.039
(9.0±1.0)
.575
(14.5)
.709
(18.0)
1.10
(28.0)
.472±.039
(12.0±1.0)
.610±.039
(15.5±1.0)
.965±.039
(24.5±1.0)
MO1
MOX1
MO2
MOX2
MO3
MOX3
Type C (max.) D d (nom.) l
Dimensions inches (mm)
101
KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 8/04/05
resistors
102 KOA Speer Electronics, Inc. • Bolivar Drive • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 8/04/05
MO
metal oxide power type leaded resistor
Absolute
Maximum
Working
Voltage
Resistance
Range
E-24
(G±2%)
Resistance
Range
E-24
(J±5%)
Part
Designation
Absolute
Maximum
Overload
Voltage
Power
Rating
@ 70°C
applications and ratings
Minimum
Dielectric
Withstanding
Voltage
T.C.R.
(ppm/°C)
Max.
MO1/2
MO1
MO2
MO3
MOX1/2
MOX1
MOX2
MOX3
0.5W
1.0W
2.0W
3.0W
0.5W
1.0W
2.0W
3.0W
400V
500V
400V
500V
±200
250V
10Ω- 47kΩ
10Ω- 120kΩ
10Ω- 150kΩ
10Ω- 47kΩ
0.2Ω- 9.1Ω
5.1Ω- 9.1Ω
10Ω- 100kΩ
400V
350V 600V
500V 800V
E = √P x R E x 2.5
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 0 40 60 80
100 160
70
20
Ambient Temperature
(°C)
0
-55
120
235
-20
140 180 200 220 240
Surface Temperature Rise
Temperature Rise (°C)
150
125
100
75
50
0255075
% Rated Power
0100
25
MO1/2, MOX1/2
MO1, MOX1
MO2, MOX2MO3, MO3X
Load Life @ 70°C, 1000 Hr
∆ R/R (%)
+4
+2
0.2 1 10 100
Resistance
(Ω)
-4
1k
-2
10k
MOX1 MO1
0
47k
Performance Characteristics
Parameter Requirement
Short Time Overload
±200ppm/°CTemperature Coefficient
Moisture Resistance
±2.0%
±1.0%
±5.0%
Resistance to Solder Heat
Temperature Cycling
±1.0%
±1.0%
Load Life
Vibration
Terminal Strength (Lead Pull)
Shock
Voltage Coefficient
Current Noise
Low Temperature Operation
5 # Minimum
<0.1µv/v/decade
<20ppm/v
Operating
Temperature
Range
-55°C
to
+200°C
resistors
0.1Ω- 9.1Ω
0.2Ω- 9.1Ω
