RES-50 Datasheet, PDF (1/2 Pages) Cooper Bussmann, Inc. – REN (250V) RES (600V) Renewable Class H Fuses

50 Series
Economical Silicone Coated Wirewound
Automated winding, in-line color
banding, and testing allow for an
economically priced, industrial
grade wirewound power resistor.
These resistors feature an all
welded construction with a high
purity alumina ceramic core and
high quality RoHS grade tinned
copper wire instead of copper
weld which produces better
thermal characteristics. The 50
series accompanies Ohmite's
wide range of axial leaded prod-
ucts.
F e at u r e s
• Rugged construction
• Optimized for Medium
to High volume pro-
duction
• Custom resistance
values can also be
produced on request.
Series
53J
55J
Series specifications
Power at 25°C
3W
5W
Resistance Limiting Element Voltage
0R1 to 10K
150
0R1 to 20K
200
Characteristics
Temp. Coefficient ±90 ppm/°C for below 1.0 Ω
of Resistance ±50 for 1.0 Ω to 99 Ω
±30 for 100 Ω and above
Short Term 53J 5X for 5 seconds
Overload 55J 10X for 5 seconds
Leads Tin Coated Copper
Test Condition
Short term overload 5X Rated power for 5 sec-
onds (3W); 10X Rated power
for 5 seconds (5W)
Load life at rated power 1000 hours (1.5 Hrs ON, 0.5
Hrs OFF cycle)
Robustness of termination As per BS-CECC 40201-002
Maximum ∆R
<2% + 0R05
<5% + 0R05
<1% + 0R05
Derating
100
80
60
40
20
0 _{0 25 50 100 150 200 250 300 350}
Ambient Temperature, °C
Key to four-band code
123 4
Band 1 2
Color Digit
Black
0 0 x
Brown
Red
1 1 x
2 2 x
Orange 3 3 x
Yellow
4 4 x
Green
5 5 x
Blue
66
Violet
77
Grey
White
88
9 9
Gold x
Silver x
3 4
Multiplier Tolerance
1Ω
10Ω
100Ω
± 1% (F)
± 2% (G)
1KΩ
± 3%
10KΩ
± 4%
100KΩ
0.1Ω
0.01Ω
± 5%
(J)
± 10% (K)
6
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax [phone] • www.ohmite.com • [e-mail]