The 89 Series is a high-per-
formance axial type resistor.
These molded-construction
metal-housed resistors are
available in higher power rat-
ings than standard axial resis-
tors and are better suited to
withstanding vibration, shock
and harsh environmental con-
ditions.
The 89 Series Metal-Mite
®
resistors are aluminum housed
to maintain high stability during
operation and to permit secure
mounting to chassis surfaces.
The metal housing also
provides heat-sinking capabili-
ties.
SPECIFICATIONS
Material
Housing:
Metal, anodized alumi-
num.
Internal Coating:
Silicone.
Core:
Ceramic.
Terminals:
Solder-coated axial.
Derating:
Linearly from
100% @ +25°C to 0% @
+275°C.
Metal-Mite
®
Aluminum Housed
Axial Term. Wirewound, 1% Tolerance
F
A
E
H
B
}
R
N
D
P
terminal
hole dia.
L
M
89 Series
Electrical
FEATURES
• High Stability: ±0.5%
ΔR.
• High power to size ratio.
• Metal housing allows chassis
mounting and provides heat sink
capability.
As of September 2006,
the 89 Series is no longer
offered as Mil. Spec.
Tolerance:
±1% and ±5% (other
tolerances available).
Power rating:
Rating is based
on chassis mounting area and
temperature stability. Proper
heat sink as follows: 5W and
10W units, 4” x 6” x 2” x .040”
Aluminum chassis; 25W units, 5”
x 7” x 2” x .040” Aluminum chas-
sis; 50W units, 12” x 12” x .059”
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: ±20 ppm/°C.
Dielectric withstanding voltage:
5W and 10W rating,1000 VAC;
25 and 50W ratings, 2250 VAC.
G
K
mount
hole dia. C
Q
J
Series
805
810
825
850
Wattage
5
10
25
50
Ohms
0.10-25K
0.10-50K
0.005-75K
0.005-100K
Voltage
210
320
520
1170
Non-Inductive versions available. Insert “N” before tolerance code. Example: 850NF560
Series (Industrial)
Dim. A (in. ±0.062 / mm ±1.57)
Dim. B (in. ±0.010 / mm ±0.25)
Dim. C (in. ±0.031 / mm ±0.79)
Dim. D (in. ±0.010 / mm ±0.25)
Dim. E (in. ±0.062 / mm ±1.57)
Dim. F (in. ±0.062 / mm ±1.57)
Dim. G (in. ±0.062 / mm ±1.57)
Dim. H (in. ±0.031 / mm ±0.79)
Dim. J (in. ±0.031 / mm ±0.79)
Dim. K (in. ±0.005 / mm ±0.13)
Dim. L (in. ±0.031 / mm ±0.79)
Dim. M (in. ±0.062 / mm ±1.57)
Dim. N (in. ±0.031 / mm ±0.79)
Dim. P (in. ±0.005 / mm ±0.13)
Q min AWG
Dim. R (in., min/mm, min)
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)
805NF5R0E
Series
805 = 5 Watt
810 = 10 watt
825 = 25 watt
850 = 50 watt
Tolerance Ohms
RoHS
F = 1%
R005= 0.005Ω
Compliant
J = 5%
R10 = 0.1Ω
1R0 = 1.0Ω
250 =
250Ω
1K0 = 1,000Ω
1K5 = 1,500Ω
25K = 25,000Ω
5 watt
10 watt
805
810
Dimensions
1.125 / 28.59 1.375 / 34.93
0.490 / 12.45 0.625 / 15.88
0.078 / 1.98 0.094 / 2.39
0.444 / 11.28 0.562 / 14.28
0.600 / 15.24 0.750 / 19.05
0.266 / 6.76 0.312 / 7.93
0.334 / 8.48 0.438 / 11.13
0.245 / 6.22 0.312 / 7.93
0.646 / 16.41 0.812 / 20.63
0.093 / 2.36 0.094 / 2.39
0.320 / 8.13 0.406 / 10.31
0.133 / 3.38 0.203 / 5.16
0.065 / 1.65 0.094 / 2.39
0.050 / 1.27 0.085 / 2.16
16
12
0.085/ 2.16 0.140/ 3.56
25 watt
825
1.938 / 49.23
0.781 / 19.84
0.172 / 4.37
0.719 / 18.26
1.062 / 26.98
0.438 / 11.13
0.531 / 13.49
0.391 / 9.93
1.094 / 27.79
0.125 / 3.18
0.562 / 14.28
0.281 / 7.14
0.094 / 2.39
0.085 / 2.16
12
0.140/ 3.56
50 watt
850
2.781 / 70.64
0.844 / 21.44
0.188 / 4.78
1.562 / 39.68
1.938 / 49.23
0.438 / 11.13
0.594 / 15.09
0.422 / 10.72
1.156 / 29.36
0.125 / 3.18
0.625 / 15.88
0.312 / 7.92
0.094 / 2.39
0.085 / 2.16
12
0.140/ 3.56
S TA N D A R D PA RT N U M B E R S
Wattage
Ohmic value
Ohmic value
805F–––
5
810F–––
10
825F–––
25
Part No.
Prefix
Suffix
0.005–––R005
0.010–––R010
0.025–––R025
0.1
–––R10
0.3
–––R30
0.5
–––R50
0.7
–––R70
1.0
–––1R0
1.5
–––1R5
2.0
–––2R0
3.0
–––3R0
4.0
–––4R0
5.0
–––5R0
10.0
–––10R
15.0
–––15R
850F–––
50
Part No.
Prefix
Suffix
–––20R
–––25R
–––30R
–––40R
–––50R
–––75R
–––100
–––150
–––200
–––250
–––300
–––400
–––500
–––750
–––1K0
Wattage
Ohmic value
805F–––
5
810F–––
10
825F–––
25
850F–––
50
Part No.
Prefix
Suffix
–––1K5
–––2K0
–––2K5
–––3K0
–––3K5
–––4K0
–––4K5
–––5K0
–––6K0
–––10K
–––15K
–––20K
–––25K
–––50K
–––75K
–––100K
Wattage
805F–––
5
810F–––
10
825F–––
25
850F–––
50
20
25
30
40
50
75
100
150
200
250
300
400
500
750
1,000
1,500
2,000
2,500
3,000
3,500
4,000
4,500
5,000
6,000
10,000
15,000
20,000
25,000
50,000
75,000
100,000
= Standard values
= Non-standard values subject to minimum
handling charge per item
Shaded values involve very fine resistance wire and
should not be used in critical applications without
burn-in and/or thermal cycling.
Check product availability at
www.ohmite.com
Ohmite Mfg. Co.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
23
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