For further information
on packaging, please
refer to Appendix C.
MO
metal oxide power type leaded resistor
features
•Flameproof silicone coating equivalent to (UL94V0)
•Suitable for automatic machine insertion
•High reliability for performance
•Marking: Blue-gray body color with color-coded bands
•Products with lead-free terminations meet EU RoHS
and China RoHS requirements
Axial: T52, T521, T631
Stand-off Axial: L52, L521,
L631
, L, U, M Forming
(MO3/MOX3 bulk
packaging only)
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
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)
.126±.02
(3.2±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)
.59
(15.0)
.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)
EU
139
KOA Speer Electronics, Inc. • 199 Bolivar Drive • 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. 11/12/09
* Lead length changes depending on taping and forming type.
resistors
140 KOA Speer Electronics, Inc. • 199 Bolivar Drive • 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. 12/29/08
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 406080
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
Operating
Temperature
Range
-55°C
to
+200°C
Parameter
Requirement ∆R ±(% + 0.05Ω)
Limit Typical Test Method
Resistance
T.C.R.
Measuring points are at 10mm ±1mm from the end cap.
Room temperature +100°C
Within specified
tolerance
Within specified
T.C.R.
—
—
Overload (Short time) Rated voltage x 2.5 or max. overload voltage for 5 seconds, whichever is lower
±1% ±0.5%
Resistance to Solder Heat 260°C ±5°C, 10 seconds ± 1 second
±1% ±0.5%
Rapid Change of Temperature -55°C (30 minutes), +125°C (30 minutes), 5 cycles
±1% ±0.5%
High Temperature Exposure -125°C, 100 hours
±(2% +0.1Ω) ±1%
Terminal Strength Twist 360°C, 5 times
No lead-coming off
and loose terminals —
Resistance to Solvent Ultrasonic washing with isopropyl alcohol for 2 minutes.
Power: 0.3W/cm3, f: 28kHz, Temp: 35°C ±5°C
No abnormality in
appearance. Marking
shall be easily legible
—
Flame Retardant
Flame test: the test flame shall be applied and removed for each 15 seconds respectively
to repeat the cycle 5 times. Overload flame retardant: power (AC) corresponding to 2, 4,
8, 16 and 32 times the power rating shall be applied for each 1 minute until disconnection
occurs. However the applied voltage shall not exceed the value of 4 times of the
maximum operating voltage
No evidence of
flaming or
self-flaming
—
Moisture Resistance 40°C ± 2°C, 90 - 95% RH, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±(5%+0.1Ω) ±2%
Endurance at 70°C 70°C ± 2°C, 1000 hours, 1.5 hr ON, 0.5 hr OFF cycle
±(5%+0.1Ω) ±2%
resistors
