50 Series
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.
Economical Silicone Coated Wirewound
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.
S e r i e S S p e c i F i c at i o n S
Series
53J
55J
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
Overload
55J
5X for 5 seconds
10X for 5 seconds
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
Leads
Tin Coated Copper
Derating
100
% Rated Power
80
60
40
20
0
0 25 50 100 150 200 250 300 350
Ambient Temperature,
°C
Key to four-band code
Band 1
Color
Brown
Black
0
2
0
x
3
Multiplier
x
10Ω
1Ω
±
4
Digit
1
1
123 4
Tolerance
1%
(F)
Blue
Green
Yellow
Orange
Red
Violet
Grey
Gold
White
6
7
8
5
4
3
2
6
7
8
9
5
4
3
2
x
x
x
x
100KΩ
10KΩ
1KΩ
100Ω
±
±
±
4%
3%
2%
(G)
9
Silver
x
x
0.01Ω
0.1Ω
±
±
10%
5%
(K)
(J)
6
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
50 Series
(mm)
Low Cost Silicone Coated Axial
DimenSionS
d
D max.
L
38mm**
0-3mm
Type
53J
55J
L nom
14±1.5
21±1.5
D max*
5.6
8
d nom
0.80±0.05
1.0±0.05
*D max. will be 6mm max. for 53J
and 8.5mm for 55J for values less
than or equal to 1R0.
**When ordered on tape and reel,
lead length will be 36mm ±3 for
53J and 34mm ± 3 for 55J.
o r D e r i n G i n F o r m at i o n
Non-Inductive
Winding
Optional (blank
RoHS
= std. winding)
Compliant
Tape & reel
1000 per reel
Modified
lead length
Standard Part
Numbers
53JR10E
53JR50E
53J1R0E
53J5R0E
53J7R5E
53J10RE
53J25RE
53J50RE
53J75RE
53J100E
53J250E
53J500E
53J750E
53J1K0E
53J2K0E
53J5K0E
53J10KE
55JR10E
55JR50E
55J1R0E
55J5R0E
55J7R5E
55J10RE
55J25RE
55J50RE
55J75RE
55J100E
55J250E
55J500E
55J750E
55J1K0E
55J2K0E
55J5K0E
55J10KE
55J20KE
50 Series
53NJR10E-TR
Wattage
Tolerance Resistance Value
3 or 5 watt J = 5%
R10 = 0.10Ω
1R0 = 1.0Ω
10R = 10.0Ω
250 = 250Ω
1K0 = 1,000Ω
7K5 = 7500
20K = 20000
1-866-9-OHMITE • Int’l 1-847-258-0300 • Fax 1-847-574-7522 • www.ohmite.com • info@ohmite.com
7
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