Metal-Mite
®
Aluminum Housed
Axial Terminal Wirewound, 1% Tolerance
The 89 Series is a high-performance axial type
resistor. These molded-construction metal-housed
resistors are available in higher power ratings than
standard axial resistors and are better suited to with-
standing vibration, shock and harsh environmental
conditions.
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
capabilities.
89 series
F e at u r e s
• High Stability: ±0.5% ∆R
• High power to size ratio
• Metal housing allows chassis mounting and pro-
vides heat sink capability
s e r i e s s p e C i F i C at i o n s
Non-Inductive versions available. Insert “N” before tolerance code.
Example: 850NF560
Series
805
810
825
850
Wattage
5
10
25
50
Ohms
0.10-25K
0.10-50K
0.010-75K
0.005-100K
Voltage
210
320
520
1170
CharaCteristiCs
Housing
Metal, anodized aluminum
Internal Coating
Silicone
Core
Ceramic
Terminals
Solder-coated axial
Derating
Linearly from 100% @ +25°C to 0% @ +275°C.
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 chassis;
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.
(continued)
128
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
89 series
Ø 1.27
±.13
D
L
J
F
G
}
(in./mm)
Metal-Mite® Aluminum Housed
Axial Terminal Wirewound, 1% Tolerance
805
B
E
Ø 2.0
±.25
A
16
AWG
min.
2.1
±.1
810, 825, 850
D i m e n s i o n s
L
J
GA
F
E
B
D
H
B
max.
1.18" / 30.0
1.44" / 36.5
Dimensions have changed
as of August 2015
K
C
C
H
D
max.
0.44" / 11.2
0.33" / 8.5
2.16 min.
A
max.
805
810
0.65" / 16.5
0.83" / 21.0
C
max.
0.43" / 11.0
0.35" / 8.8
K
E
max.
0.63" / 15.9
0.78" / 19.9
F
±.3mm
0.56" / 14.3
0.44" / 11.3
G
±.3mm
0.49" / 12.4
0.63" / 15.9
H
max.
0.18" / 4.5
0.22" / 5.5
J
max.
0.09" / 2.4
0.20" / 5.2
0.11" / 2.8
K
max.
0.07" / 1.8
0.07" / 1.8
L
±.25mm
0.09" / 2.4
0.09" / 2.4
825
850
1.10" / 28.0
1.10" / 28.0
2.01" / 51.0
2.85" / 72.5
0.58" / 14.8
0.58" / 14.8
0.56" / 14.2
0.56" / 14.2
1.07" / 27.3
1.93" / 49.1
0.72" / 18.3
1.56" / 39.7
0.78" / 19.8
0.84" / 21.4
0.30" / 7.7
0.33" / 8.4
0.20" / 5.2
0.10" / 2.6
0.10" / 2.6
0.13" / 3.2
0.13" / 3.2
o r D e r i n G i n F o r m at i o n
Wattage
Ohmic value
Ohmic value
805F–––
5
810F–––
10
825F–––
25
850F–––
50
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
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
Non-Inductive Winding
RoHS
Optional (blank = std. winding)
Compliant
805NF5R0E
Series
805 = 5 Watt
810 = 10 watt
825 = 25 watt
850 = 50 watt
Tolerance Ohms
F = 1%
R005= 0.005Ω
J = 5%
R10 = 0.1Ω
1R0 = 1.0Ω
250 =
250Ω
1K0 = 1,000Ω
1K5 = 1,500Ω
25K = 25,000Ω
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
=
tandard values
S
=
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.
As of September 2006,
the 89 Series is no longer
offered as Mil. Spec.
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
129
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