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
• Products with lead-free terminations meet EU RoHS
and China RoHS requirements
Axial: T52, T521, T631
Stand-off Axial: L52,
L521, L631
(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
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
201
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. 12/20/17
* Lead length changes depending on taping and forming type.
resistors
NOT RECOMMENDED FOR NEW DESIGN
202 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. 12/20/17
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
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
E = √P x R
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-60 -40 04060 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
0.5W (L15A)
1W (L15A)
2W (L15A)3W (L30A)
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.
+25°C/+125°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), +155°C (30 minutes), 5 cycles
±1% ±0.5%
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
NOT RECOMMENDED FOR NEW DESIGN
