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90 Series

ATTENTION! ENAMEL COLOR CHANGE Commencing October 15th, 2000, the Ohmite 90 Series Resistor will convert from white enamel to black. Details

Lead Free Vitreous Enamel Molded Axial Wirewound Resistors
5% Tolerance standard

Series	Wattage*	Ohms	Dimensions (in. / mm)		Voltage	Lead ga.
			Length	Diam.
91	1.5	0.1-3.6K	0.452 / 11.5	0.140 / 3.6	150	24
92	2.25	0.1-3.5K	0.405 / 10.3	0.219 / 5.6	85	20
93	3.25	0.1-10.5K	0.577 / 14.7	0.234 / 5.9	200	20
95	5.0	0.1-25K	0.968 / 24.6	0.234 / 5.9	495	20
96	6.5	0.1-50K	0.952 / 24.2	0.343 / 8.7	625	20
90	11.0	0.1-91K	1.811 / 46.0	0.343 / 8.7	1080	20

* 2x power ratings by using heat-sink mounting clips
Note: Due to space restrictions, parts are stamped with wattage ratings reduced to the nearest whole number. The actual wattage ratings are as published in this catalog.

RoHS compliant product available Jan. 2006 Add "E" suffix to part number to specify.

When you need the highest quality wirewound axial terminal resistors available, choose Ohmite's 90 Series resistors. They are manufactured by a unique process that molds the vitreous enamel over the resistive element, helping to ensure consistent dimensions. This uniformity permits 90 Series resistors to be mounted in clips, creating a heat-sinking benefit. The durable vitreous enamel coating, which is totally lead free, permits the 90 Series resistors to maintain a hard coating while operating at high temperatures. Mechanical integrity is enhanced by the all-welded construction.

FEATURES Molded Construction provides consistent shape and size (Permits mounting in clips which extends power rating). Meets MIL-R-26 requirements for insulated resistors. All-welded construction. Flame resistant lead free vitreous enamel coating. Higher ratings in smaller sizes. Heat sink mounting clips available. SPECIFICATIONS Material Coating: Molded lead free vitreous enamel. Core: Ceramic. Terminals: Solder-coated copper clad axial. 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% (other tolerances available). Power rating: Based on 25°C free air rating. (other wattages available*). Maximum ohmic values: See chart. Overload: Under 11 watts: 5 times rated wattage for 5 seconds; 11 watts: 10 times rated wattage for 5 seconds Temperature coefficient: 1 to 9.99 ohms: ±100 ppm/°C; 10 ohms and over: ±30 ppm/°C Dielectric withstanding voltage: 500 VAC: 1 watt rating; 1000 VAC: 2, 3, 5 and 11 watt rating.

HOW TO ORDER

MOUNTING CLIP FOR 90 SERIES

• Prevents severe vibration or mechanical shock to resistor
• Increases resistor wattage up to 100% when mounted on metal surface (1.5 sq. in. by 0.040 in. thick min. per watt dissipated)
• Holes in clip base permit fastening to chassis surface with machine screws, eyelets or rivets
• Sold in bags of ten (10)

Avail.	Part No.	Resistor rating (watts)	Clip length (in./mm)	Clip width (in./mm)	Clip height (in./mm)	No. of holes	Hole centers (in./mm)	Hole diameter (in./mm)
B	5900	1.5	0.40 / 10.319	0.150 / 3.810	0.250 / 6.350	1	--	0.71 / 1.803
B	5902	2.25	0.35 / 8.890	0.217 / 5.500	0.275 / 6.980	2	0.156 / 3.969	0.71 / 1.803
A	5904	3.25	0.50 / 12.700	0.257 / 6.500	0.319 / 8.103	2	0.250 / 6.350	0.093 / 2.362
A	5906	5.0	0.90 / 22.860	0.237 / 6.019	0.284 / 7.214	2	0.400 / 10.160	0.103 / 2.616
A	5908	11.0	1.75 / 44.450	0.333 / 8.458	0.377 / 9.576	2	0.800 / 20.320	0.103 / 2.616

A = Most popular standard values
B = Standard values
C = Non-standard values subject to minimum handling charge per item