RW
coat insulated miniature precision
power wirewound resistors
EU
features
•
Resistors meeting MIL-R-26E (U and
V characteristics) and surface temperature
(hot spot) 350°C max.
•
Resistors with a wide range of 0.1Ω ~ 62kΩ,
covering applications from precision to power
•
RW N type resistors are non-inductive wound
and can be used in high frequency applications.
•
Marking: Black body color with alpha-numeric marking
•
Products with lead-free terminations meet EU RoHS
and China RoHS requirements
dimensions and construction
l
D
L
Ceramic Core
l
t
d
Type
RW1/2, RW1/2N
RW1, RW1N
RW2, RW2N
Insulation
Coating
Resistive
Wire
Electrode Lead
Cap
Wire
RW3, RW3N
RW5, RW5N
RW7, RW7N
RW10, RW10N
L
.315±.039
(8.0±1.0)
Dimensions
inches
(mm)
D
d (nom.)
+.039
.138
-0
+1.0
)
(1.6
-0
l
.413±.039 .106±.039
(10.5±1.0) (2.7±1.0)
.512±.039 .205±.039
(13.0±1.0) (5.2±1.0)
.650±.039 .252±.039
(16.5±1.0) (6.4±1.0)
.866±.039
(22±1.0)
.307±.059
1.24±.039
(7.8±1.5)
(31.5±1.0)
1.81±.059 .366±.089
(46.0±1.5) (9.3±1.5)
.020
(0.5)
.031
(0.8)
1.50±.118
(38.0±3.0)
.039
(1.0)
ordering information
Pb Free
Type
RW
Type
1/2
Power
Rating
1/2: 0.5W
1: 1W
2: 2W
3: 3W
5: 5W
7: 7W
10: 10W
N
Winding
Method
Nil: Standard
winding
N: Non-inductive
winding
T
Termination
Material
T: Sn
103
Nominal
Resistance
±3%, ±5%: 2 significant
figures + 1 multiplier
“R” indicates decimal
on value <10Ω
±0.5%, ±1%:
3 significant figures
+ 1 multiplier “R”
indicates decimal
on value <100Ω
J
Tolerance
D: ±0.5%
F: ±1%
H: ±3%
J: ±5%
Packaging quantity:
RW1/2 ~ RW1: 1,000 pieces
RW2 ~ RW7: 500 pieces
RW10: 300 pieces
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
11/19/08
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
131
resistors
RW
resistors
coat insulated miniature precision
power wirewound resistors
applications and ratings
Part
Designation
RW1/2
RW1/2N
RW1
RW1N
RW2
RW2N
RW3
RW3N
RW5
RW5N
RW7
RW7N
RW10
RW10N
Power Rating
U
0.5W
1.0W
2.0W
3.0W
5.0W
V
—
—
3.0W
5.0W
7.0W
D±0.5%
(E96)
10 - 2.61k
—
1 - 5.11k
—
1 - 10k
—
1 - 15k
—
1 - 30.1k
—
1 - 45.3k
—
1 - 60.4k
—
Resistance Range (Ω)
F±1%
(E96)
10 - 2.61k
10 - 2.37k
1 - 5.11k
10 - 3.74k
1 - 10k
15 - 10k
1 - 15k
15 - 15k
1 - 30.1k
20 - 29.4k
1 - 45.3k
36 - 44.2k
1 - 60.4k
62 - 49.9k
H±3%
(E24)
0.47 - 2.7k
10 - 2.4k
0.1 - 5.1k
10 - 3.6k
0.1 - 10k
10 - 10k
0.1 - 15k
15 - 15k
0.1 - 30k
20 - 30k
0.1 - 47k
36 - 43k
0.1 - 62k
62 - 51k
J±5%
(E24)
0.47 - 2.7k
10 - 2.4k
0.1 - 5.1k
10 - 3.6k
0.1 - 10k
10 - 10k
0.1 - 15k
15 - 15k
0.1 - 30k
20 - 30k
0.1 - 47k
36 - 43k
0.1 - 62k
62 - 51k
±20:R≥10Ω
±50:1Ω≤R
<10Ω
±90:R<1Ω
400V
700V
T.C.R.
(ppm/°C)
Max.
Working
Voltage
80V
130V
140V
200V
Max.
Overload
Voltage
150V
300V
500V
600V
7.0W
10W
10W
14W
600V
1000V
800V
1500V
Operating Temperature Range: Characteristic U: -55°C ~ +275°C, V: -55°C ~ +350°C
environmental applications
Derating Curve
100
% Rated Power
80
60
40
20
0
-100
-50
-55
0
25
Ambient Temperature
(°C)
50
100
150
200
250 300
275
350
Temperature Rise (°C)
Surface Temperature Rise
350
300
250
200
150
100
50
0
RW7, RW10
RW2
RW1/2, RW1, RW3, RW5
Frequency Characteristics
1000
RW1
800
U
V
Resistance (Ω)
600
RW1N
400
RW1
200
0
40
80
120
160
200
0
% Rated Power
RW1N
RW1
RW1N
1
10
100
1k
10k
100k
1M
10M
100M
Frequency (Hz)
Performance Characteristics
Parameter
Resistance
T.C.R.
Overload (Short time)
Resistance to Solder Heat
Moisture Resistance
Endurance @ 25°C
Requirement
∆
R ±(% + 0.05Ω)
Within regulated tolerance
Within specified T.C.R.
0.2: U
2: V
0.1
0.2: U
2: V
0.5: U
3: V
0.2: U
2: V
25°C
U: +25°C/-55°C, +25°C/+125°C and +25°C/+275°C
V: +25°C/-55°C, +25°C/+125°C and +25°C/+350°C
Rated power x 5 or Max. overload voltage, whichever is lower for 5 seconds
Rated power x 10 or Max. overload voltage, whichever is lower for 5 seconds
350°C ± 10°C, 3 seconds ± 0.5 seconds or 260°C ± 5°C,
10 seconds ± 1 second
Power rating x 1/10, 40°C, 90 - 95% RH, 1000 hours,
1.5 hr ON/0.5 hr OFF cycle
25°C, 2000 hours
1.5 hr ON/0.5 hr OFF cycle
275
+5
°C, 250 hours
-0
350
+5
°C, 250 hours
-0
11/19/08
Test Method
High Temperature Exposure
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use.
132
KOA Speer Electronics, Inc.
• 199 Bolivar Drive • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
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