90 Series
Lead Free Vitreous Enamel Molded
Axial Term. Wirewound, 5% Tolerance Standard
F ꢀ at u ꢁ ꢀ S
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.
•ꢀMoldedꢀConstructionꢀprovidesꢀconsistentꢀshapeꢀ
and size (Permits mounting in clips which extends
power rating).
•ꢀMeetsꢀMIL-R-26ꢀrequirementsꢀforꢀinsulatedꢀresis-
tors.
•ꢀAll-weldedꢀconstruction.
•ꢀFlameꢀresistantꢀleadꢀfreeꢀvitreousꢀenamelꢀcoating.
•ꢀHigherꢀratingsꢀinꢀsmallerꢀsizes.
•ꢀHeatꢀsinkꢀmountingꢀclipsꢀavailable.
•ꢀRoHSꢀcompliant;ꢀaddꢀ“E”ꢀsuffixꢀtoꢀpartꢀnumberꢀtoꢀ
specify.
SꢀꢁꢂꢀS SpꢀCꢂFꢂCatꢂonS
Series
91
92
93
95
Wattage*
1.5
Ohms
Voltage
150
85
200
495
625
1080
0.1Ω-3.6K
0.1Ω-3.5K
0.1Ω-10.5K
0.1Ω-25K
0.1Ω-50K
0.1Ω-91K
2.25
3.25
5.0
6.5
11.0
96
90
* 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.
ChaꢁaCtꢀꢁꢂStꢂCS
Molded lead free vitreous enamel
Coating
Core
Ceramic
Solder-coated copper clad axial. RoHS solder composition is 96% Sn, 3.5% Ag, 0.5% Cu
Linearly from 100% @ +25°C to 0% @ +350°C
±5% (other tolerances available)
Terminals
Derating
Tolerance
Based on 25°C free air rating (other wattages available*)
See chart
Power rating
Maximum ohmic values
Overload
Under 11 watts: 5 times rated wattage for 5 seconds. 11 watts: 10 times rated wattage for 5 seconds
1 to 9.99Ω: ±100 ppm/°C; 10Ω and over: ±30 ppm/°C
500 VAC: 1W rating; 1000 VAC: 2, 3, 5 and 11W
Temperature coefficient
Dielectric withstanding voltage
DꢂmꢀnSꢂonS
Series
91
Wattage
1.5
Length
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
(in./mm max.)
0.452 / 11.5
0.405 / 10.3
0.577 / 14.7
0.968 / 24.6
0.952 / 24.2
1.811 / 46.0
24
20
20
20
20
20
1.5 in. / 38.1mm
L
D
92
2.25
3.25
5.0
93
95
96
6.5
90
11.0
(continued)
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
89