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Axiohm Series

Watt Rating Form	Resistance Range (ohms)	Standard Resistance Tolerance	Dielectric Withstanding Voltage	Maximum Voltage Rating	Dim. A ±.063"/±1.60mm	Dim. B ±.031"/0.79mm	Dim. C Wire Gauge (dia.)	Dim. D Max Clean terminal to Clean terminal (in./mm)
1C	0.1-4K	±5%	500	100	0.313±.031 / 7.95±.79	0.094 / 2.39	#24 (.020")	0.406 / 10.31
2C	0.1-10K	±5%	500	300	0.375 / 9.53	0.219 / 5.56	#20 (.032")	0.469 / 11.91
3C	0.1-20K	±5%	500	450	0.5 / 12.7	0.219 / 5.56	#20 (.032")	0.594 / 15.09
4C	0.1-30K	±5%	500	600	0.688 / 17.48	0.219 / 5.56	#20 (.032")	0.813 / 20.65
5C	0.1-40K	±5%	500	800	0.938 / 23.83	0.219 / 5.56	#20 (.032")	1.063 / 27.00
7C	0.1-50K	±5%	500	875	1 / 25.4	0.313 / 7.95	#20 (.032")	1.125 / 28.58
10C	0.1-90K	±5%	500	1600	1.563 / 39.7	0.313 / 7.95	#20 (.032")	1.688 / 42.67

Ohmite's Axiohm resistors are Centohm coated for maximum reliability. These all-welded units are characterized by their low temperature coefficients and resistance to thermal shock, making them ideal for a wide range of electrical and electronic applications. FEATURES Welded construction Inorganic and non-hygroscopic, Centohm coating seals and protects the resistance wire. Centohm coating is flameproof and withstands temperatures in excess of 2000°F. Exceeds MIL-R-26 moisture requirements Centohm Resistors are designed to meet and exceed performance characteristics of vitreous enamel resistors. Centohm is more cost effective than vitreous enamel. ±5% resistance tolerance

OPTIONS Noninductive Resistors: These specially designed versions are wound using the Ayrton-Perry method. Resistance Tolerances: Options include 5%, 1%, 0.5%, 0.25%, and 0.1% resistors. Terminal Sizes: Alternate terminal diameters available. Tape and Reel: Resistors taped for automatic insertion. Call the factory for size, quantity and ordering information SPECIFICATIONS Material Coating: Flameproof proprietary Centohm Core: Ceramic Element: Copper-nickel alloy or nickel-chrome alloy depending on resistance value End Cap: Stainless steel Terminals: Tinned Copper weld. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu Derating: Linearly from 100% @ +25°C to 0% @ +350°C. Electrical Tolerance: ±5% (Std) down to 0.1% available. Power rating: Based on 25°C free air rating (other wattages available). Overload: Under 5 watts, 5 times rated wattage for 5 seconds; 5 watts and over, 10 times rated wattage for 5 seconds. Temperature coefficient: 0 ±30ppm /°C above 10 ohms; 0 ±100ppm/°C 1 to 10 ohms; 0 ±200ppm/°C below 1 ohm

ENVIRONMENTAL PERFORMANCE

Test	Maximum
Temperature Coefficient	±30ppm / °C above 10 Ohms
	±100ppm / °C 1 to 10 Ohms
	±200ppm / °C below 1 Ohm
Thermal Shock	±(2% + 0.05 ohm)ΔR
Short Time Overload	±(2% + 0.05 ohm)ΔR
Dielectric	±(0.1% + 0.05 ohm)ΔR
Low Temperature Storage	±(2% + 0.05 ohm)ΔR
High Temperature Exposure	±(2% + 0.05 ohm)ΔR
Moisture Resistance	±(2% + 0.05 ohm)ΔR
Shock	±(2% + 0.05 ohm)ΔR
Vibration	±(2% + 0.05 ohm)ΔR
Load Life	±(3% + 0.05 ohm)ΔR
Terminal Strength	±(1% + 0.05 ohm)ΔR

ΔR values are maximums based on MIL-R-26 testing requirements at 350°C.

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