Maxi-Mox resistors are also
versatile. Suitable for industrial
applications requiring still more
power for high voltage switch-
ing, industrial control, and high
voltage current limiting.
Maxi-Mox Resistors
Precision Thick Film Axial Lead
High Voltage/High Resistance Resistors
A
B
1.5" typ.
lead dia.
0.032" typ.
FEATURES
•
•
•
•
Wide resistance ranges
Voltage rating to 30.0KV
Power rating to 12.5 watts
Silicone or epoxy coating
Ohmite
Series
Resistance
Range (Ohms
Power
@70°C
2.5W
5.0W
7.5W
10.0W
12.5W
@25°C
2.0W
3.0W
4.0W
5.0W
6.0W
Voltage
Rating
10.0KV
20.0KV
30.0KV
40.0KV
50.0KV
APPLICATIONS
•
•
•
•
HV power supplies
Power distribution
Medical instrumentation
Avionics
Available
Tolerances*
1% to 20%
1% to 20%
1% to 20%
1% to 20%
1% to 20%
A ± 0.015”
(in/mm)
1.120” /
28.45
2.120” /
53.85
3.120” /
79.24
4.120” /
104.65
5.120” /
130.05
B max.
(in/mm)
0.310” /
7.87
0.310” /
7.87
0.310” /
7.87
0.310” /
7.87
0.310” /
7.87
SPECIFICATIONS
Material
Core:
Alumina
Resistor:
Thick Film
Electrical
Resistance Range:
1K to 1 Teraohm
Power Rating:
2.0W to 12.5W
Voltage Rating:
10KV to 50KV
Tolerance:
0.1% to 20%
Operating Temperature:
-55°C to +220°C
Temperature Coefficient:
25ppm/°C 0° to 85°C available
• High-temperature (silicone coated)
MOX-1-12
250 ohms to 300,000M
MOX-2-12
500 ohms to 700,000M
MOX-3-12
750 ohms to 1,000,000M
MOX-4-12
1K to 1,000,000M
MOX-5-12
1.25K to 1,000,000M
• Standard (epoxy coated)
MOX-1-13
250 ohms to 300,000M
MOX-2-13
500 ohms to 700,000M
MOX-3-13
750 ohms to 1,000,000M
MOX-4-13
1K to 1,000,000M
MOX-5-13
1.25K to 1,000,000M
*Some tolerances are not available over the entire resistance range.
10.0KV
20.0KV
30.0KV
40.0KV
50.0KV
0.1% to 20%
0.1% to 20%
0.1% to 20%
0.1% to 20%
0.1% to 20%
1.140” /
28.96
2.140” /
54.36
3.140” /
79.76
4.140” /
105.16
5.140” /
130.56
0.345” /
8.76
0.345” /
8.76
0.345” /
8.76
0.345” /
8.76
0.345” /
8.76
T E M P E R AT U R E / V O LTA G E C O E F F I C I E N T S O F R E S I S TA N C E
Resistor Series
MOX-1
MOX-2
MOX-3
MOX-4
MOX-5
Temp. Coeff. of Resistance*
25 PPM/°C
50 PPM/°C
100 PPM/°C
1K-1,500M
1K-1,500M
1K-1,500M
1K-1,500M
1K-1,500M
1K-450M
1K-1,000M
1K-1,500M
1K-2,000M
1K-2,500M
451M-30,000M
1,001M-60,000M
1,501M-90,000M
2,001M-120,000M
2,501M-150,000M
Voltage Coeff. of Resistance**
< 2PPM/Volt
< 5PPM/Volt
250Ω-1,000M
500Ω-2,600M
750Ω-4,000M
1K-5,300M
1.25K-6,700M
1,001M-100,000M
2,601M-200,000M
4,001M-300,000M
5,301M-400,000M
6,701M-500,000M
*Epoxy: -55°C to 110°C; High Temp. Silicone: -55°C to 210°C
**For tighter VCs please contact factory.
P E R F O R M A N C E D ATA
Characteristic
Humidity
Dielectric Withstanding Voltage
Insulation Resistance
Thermal Shock
Load Life
Resistance to Solvents
Terminal Strength
Shock (Specified Pulse)
Vibration High Frequency
Power Conditioning
Solderability
Test Method
MIL-STD-202, Method 103B, Condition B
MIL-STD-202, Method 301, 750V
MIL-STD-202, Method 302, Condition A or B
MIL-STD-202, Method 107G, Condition B, B-1, or F
MIL-STD-202, Method 108A, Condition D
MIL-STD-202, Method 215G
MIL-STD-202, Method 213B, Condition I
MIL-STD-202, Method 204D, Condition D
MIL-R-49462A, Par 4.8
MIL-STD-202, Method 208F
MIL-STD-202, Method 211A, Condition A or B
Specification
±0.25%
±0.25%
>10,000 M or greater dry
±0.20%
±1.0%
±0.25%
±0.25%
±0.20%
±0.50%
>95% Coverage
Acceptable for High Reliability Series only
DERATING
100
70°
80
Percent Rated Watts
Silicone
60
O R D E R I N G I N F O R M AT I O N
Style
1,2,3,4,5,8
Coating
2 = Black silicone
3 = Epoxy
6 = No coating
E = RoHS compliant
Available Jan. 2006
½½½½½½½½½½½½½
Maxi Mox
Series
Lead
1 = 0.032"
Ohms
First 3 digits are
significant; 4th digit is
multiplier (# of zeroes
to follow). Examples:
10R2 = 10.2 ohms
1000 = 100 ohms
1503 = 150,000 ohms
Tolerance
D = 0.5%
F = 1%
G = 2%
J = 5%
K = 10%
M = 15%
P = 20%
40
Epoxy
20
110°
0
0
25
50
75
100
125
150
175
210°
200
225
Ambient Temperature,
°C
Ohmite Mfg. Co.
1600 Golf Rd., Suite 850, Rolling Meadows, IL 60008 • Tel. 1-866-9-OHMITE • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
71
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