English
Language : 

90-SERIES Datasheet, PDF (1/2 Pages) Ohmite Mfg. Co. – All-welded construction
90 Series
Lead Free Vitreous Enamel Molded
Axial Term. Wirewound, 5% Tolerance Standard
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 ele-
ment, helping to ensure consistent dimensions.
This uniformity permits 90 Series resistors to be
mounted in clips, creating a heat-sinking benefit (see
next page).
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.
F e at u r e s
• Molded Construction provides consistent shape
and size (Permits mounting in clips which extends
power rating).
• Meets MIL-R-26 requirements for insulated resis-
tors.
• All-welded construction.
• Flame resistant lead free vitreous enamel coating.
• Higher ratings in smaller sizes.
• Heat sink mounting clips available.
• RoHS compliant; add “E” suffix to part number to
specify.
Series specifications
Series Wattage*
Ohms
Voltage
91
1.5
0.1Ω-3.6K
150
92
2.25
0.1Ω-3.5K
85
93
3.25
0.1Ω-10.5K
200
95
5.0
0.1Ω-25K
495
96
6.5
0.1Ω-50K
625
90
11.0
0.1Ω-91K
1080
* 2x power ratings by using heat-sink mounting clips shown on following page.
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.
C h a r a c t e r i s t i cs
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
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 9.99Ω: ±100 ppm/°C; 10Ω and over: ±30 ppm/°C
Dielectric withstanding voltage 500 VAC: 1W rating; 1000 VAC: 2, 3, 5 and 11W
(in./mm max.)
1.5 in. / 38.1mm
L
Dimensions
Series Wattage
91 1.5
D
92 2.25
93 3.25
95 5.0
96 6.5
90 11.0
Length
0.452 / 11.5
0.405 / 10.3
0.577 / 14.7
0.968 / 24.6
0.952 / 24.2
1.811 / 46.0
Diameter
0.140 / 3.6
0.219 / 5.6
0.234 / 5.9
0.265 / 6.7
0.343 / 8.7
0.343 / 8.7
Lead gauge
24
20
20
20
20
20
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
89