The HS/HSN Series offers
greater power capacity (100
and 250 watts) in the same
design format as Ohmite’s 89
Series.
HS/HSN Series maintains
the same construction, materi-
als, and manufacturing tech-
niques as the 89 Series. As
a made-to-order product, it is
recommended for higher vol-
ume applications.
SPECIFICATIONS
Material
Housing:
Aluminum with hard
anodic coating.
Internal Coating:
Silicone.
Core:
Ceramic.
Terminals:
Solder-coated axial
Derating:
Linearly from
100% @ +25°C to 0% @
+275°C.
L
Aluminum Housed Axial Terminal
K
M
J
Wirewound, Industrial/Commercial Grade
100 & 250 watt
D
C
A
M
E
L
J
K
nickel-plated brass nut,
stainless steel stud
BF
N
G
I
H
HS/HSN Series
E
BF
D
C
A
N
G
I
H
Electrical
FEATURES
• Standard winding (Model HS)
• Non-inductive winding (Model
HSN)
• Molded construction for total
environmental protection
• Complete welded construction
• Mounts on chassis to utilize
heat-sink effect
• High stability at conventional
power ratings
• Flat marking surface for easy
identification
• RoHS compliant; add “E” suffix
to part number to specify.
Tolerance:
±1% and ±5% (other
tolerances available).
Power rating:
Rating is based
on chassis mounting area and
temperature stability. Proper heat
sink: 12” x 12” x 0.125 Aluminum
panel.
Maximum ohmic values:
See chart.
Overload:
5 times rated wattage
for 5 seconds.
Temperature coefficient:
Under 1Ω: ±90 ppm/°C
1 to 9.99Ω: ±50 ppm/°C
10Ω and over: ±30 ppm/°C.
Dielectric withstanding voltage:
4500VAC.
Series
HS100
HSN100
HS250
HSN250
Power Rating
(Watts)
100
100
250
250
Resistance Range
(Ohms)
.05 - 29.4K
1.0 - 14.7K
.10 - 35.7K
1.0 - 17.4K
Max. Working
Voltage
1900
1350
2300
1625
DIMENSIONS
in.
(mm)
Dim. A
Dim. B
Dim. C
Dim. D
Dim. E
Dim. F
Dim. G
Dim. H
Dim. I
Dim. J
Dim. K
Dim. L
Dim. M
Dim. N
HS100 / HSN100
100 watt
2.75 ± .010
(69.85 ± .254)
2.25 ± .010
(57.15 ± .254)
3.50 ± .031
(88.90 ± .787)
5.478 ± .093
(139.14 ± 2.36)
1.812 ± .031
(46.02 ± .787)
2.812 ± .031
(71.42 ± .787)
1.75 ± .031
(44.45 ± .787)
0.188
± .031
(4.78 ± .787)
0.770 ± .015
(19.56 ± .381)
0.375 ± .031
(9.52 ± .787)
0.188 ± .010
(4.78 ± .254)
0.219 ± .031
(5.56 ± .787)
12 - 24 UNC - 2A THD
0.989 ± .031
(25.12 ± .787)
HS250 / HSN250
250 watt
3.875 ± .010
(98.425 ± .254)
2.5 ± .010
(63.50 ± .254)
4.5 ± .031
(114.30 ± .787)
7.0 ± .093
(117.80 ± 2.36)
2.125 ± .031
(53.98 ± .787)
3.0 ± .031
(76.20 ± .787)
2.188 ± .031
(55.58 ± .787)
0.250 ± .031
(6.35 ± .787)
0.955 ± .015
(24.26 ± .381)
0.312 ± .031
(7.92 ± .787)
0.188 ± .010
(4.78 ± .254)
0.25 ± .031
(6.35 ± .787)
1/4 - 20 UNC - 2A THD
1.25 ± .031
(31.75 ± .787)
100
D E R AT I N G C U R V E
80
Percent Rated Watts
Mounted
to
aluminum chassis
60
40
Unmounted
20
0
0
25
50
75 100 125 150 175 200 225 250 275
Ambient Temperature,
°C
O R D E R I N G I N F O R M AT I O N
Non-Inductive Winding
Optional (blank = std. winding)
HSN100JR05E
Series
Wattage Tolerance Ohms
100
F = 1%
R05 =
250
J = 5%
1R0 =
K=10%
10R =
100 =
10K =
14K7 =
RoHS
0.05Ω
Compliant
1.0Ω
10Ω
100Ω
10,000Ω
14,700Ω
Check product availability at
www.ohmite.com
To see the latest in resistor
technology click on the “What’s
New” tab at ohmite.com
Ohmite Mfg. Co.
1600 Golf Rd., Rolling Meadows, IL 60008 • 1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
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