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
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.
FEATURES
• Wide resistance ranges
• Voltage rating to 30.0KV
• Power rating to 12.5 watts
• Silicone or epoxy coating
APPLICATIONS
• HV power supplies
• Power distribution
• Medical instrumentation
• Avionics
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
Maxi-Mox Resistors
Precision Thick Film Axial Lead
High Voltage/High Resistance Resistors
A
B
1.5" typ.
lead dia.
0.032" typ.
Ohmite Resistance Power Voltage Available A ± 0.015” B max.
Series Range (Ohms @70°C Rating Tolerances* (in/mm) (in/mm)
• High-temperature (silicone coated)
MOX-1-12 250 ohms to 300,000M 2.5W 10.0KV 1% to 20% 1.120” / 28.45 0.310” / 7.87
MOX-2-12 500 ohms to 700,000M 5.0W 20.0KV 1% to 20% 2.120” / 53.85 0.310” / 7.87
MOX-3-12 750 ohms to 1,000,000M 7.5W 30.0KV 1% to 20% 3.120” / 79.24 0.310” / 7.87
MOX-4-12 1K to 1,000,000M 10.0W 40.0KV 1% to 20% 4.120” / 104.65 0.310” / 7.87
MOX-5-12 1.25K to 1,000,000M 12.5W 50.0KV 1% to 20% 5.120” / 130.05 0.310” / 7.87
*Some tolerances are not available over the entire resistance range.
• Standard (epoxy coated) @25°C
MOX-1-13 250 ohms to 300,000M 2.0W 10.0KV 0.1% to 20% 1.140” / 28.96 0.345” / 8.76
MOX-2-13 500 ohms to 700,000M 3.0W 20.0KV 0.1% to 20% 2.140” / 54.36 0.345” / 8.76
MOX-3-13 750 ohms to 1,000,000M 4.0W 30.0KV 0.1% to 20% 3.140” / 79.76 0.345” / 8.76
MOX-4-13 1K to 1,000,000M 5.0W 40.0KV 0.1% to 20% 4.140” / 105.16 0.345” / 8.76
MOX-5-13 1.25K to 1,000,000M 6.0W 50.0KV 0.1% to 20% 5.140” / 130.56 0.345” / 8.76
ORDERING INFORMATION
Maxi Mox
Series
Lead
1 = 0.032"
Style
1,2,3,4,5,8
Tolerance
D = 0.5%
F = 1%
G = 2%
J = 5%
K = 10%
M = 15%
P = 20%
Coating
2 = Black silicone
3 = Epoxy
6 = No coating
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
E = RoHS compliant
Available Jan. 2006
PERFORMANCE DATA
Characteristic Test Method Specification
Humidity MIL-STD-202, Method 103B, Condition B ±0.25%
Dielectric Withstanding Voltage MIL-STD-202, Method 301, 750V ±0.25%
Insulation Resistance MIL-STD-202, Method 302, Condition A or B >10,000 M or greater dry
Thermal Shock MIL-STD-202, Method 107G, Condition B, B-1, or F ±0.20%
Load Life MIL-STD-202, Method 108A, Condition D ±1.0%
Resistance to Solvents MIL-STD-202, Method 215G Acceptable for High Reliability Series only
Terminal Strength MIL-STD-202, Method 211A, Condition A or B ±0.25%
Shock (Specified Pulse) MIL-STD-202, Method 213B, Condition I ±0.25%
Vibration High Frequency MIL-STD-202, Method 204D, Condition D ±0.20%
Power Conditioning MIL-R-49462A, Par 4.8 ±0.50%
Solderability MIL-STD-202, Method 208F >95% Coverage
TEMPERATURE/VOLTAGE COEFFICIENTS OF RESISTANCE
Temp. Coeff. of Resistance* Voltage Coeff. of Resistance**
Resistor Series 25 PPM/°C 50 PPM/°C 100 PPM/°C < 2PPM/Volt < 5PPM/Volt
MOX-1 1K-1,500M 1K-450M 451M-30,000M 250Ω-1,000M 1,001M-100,000M
MOX-2 1K-1,500M 1K-1,000M 1,001M-60,000M 500Ω-2,600M 2,601M-200,000M
MOX-3 1K-1,500M 1K-1,500M 1,501M-90,000M 750Ω-4,000M 4,001M-300,000M
MOX-4 1K-1,500M 1K-2,000M 2,001M-120,000M 1K-5,300M 5,301M-400,000M
MOX-5 1K-1,500M 1K-2,500M 2,501M-150,000M 1.25K-6,700M 6,701M-500,000M
*Epoxy: -55°C to 110°C; High Temp. Silicone: -55°C to 210°C
**For tighter VCs please contact factory.
100
Percent Rated Watts
Ambient Temperature, °C
60
20
00 10050 175
80
40
110°
25 75 125 150 200
210°
Epoxy
Silicone
225
70°
DERATING
