126
KOA Speer Electronics, Inc. • Bolivar Driv e • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 9/18/07
resistors
Packaging quantity:
RW1/2 ~ RW1: 1,000 pieces
RW2 ~ RW7: 500 pieces
RW10: 300 pieces
RW
coat insulated miniature precision
power wirewound resistors
features
ordering information
±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
1/2: 0.5W
1: 1W
2: 2W
3: 3W
5: 5W
7: 7W
10: 10W
Nil: Standard
winding
N: Non-inductive
winding
T: Sn D:±0.5%
F: ±1%
H:±3%
J: ±5%
RW 1/2 N T
Winding
Method
Type Power
Rating Nominal
Resistance Tolerance
Termination
Material
103 J
dimensions and construction
d
D
Insulation
Coating Electrode
Cap Lead
Wire
L l
l t
Ceramic Core
Resistive
Wire
RW1/2, RW1/2N .315±.039
(8.0±1.0) .138+.039
-0
(1.6+1.0)
-0 .020
(0.5)
.031
(0.8)
.039
(1.0)
1.50±.118
(38.0±3.0)
.106±.039
(2.7±1.0)
.205±.039
(5.2±1.0)
.366±.089
(9.3±1.5)
.413±.039
(10.5±1.0)
RW1, RW1N
RW2, RW1N
RW7, RW7N
Type L D d (nom.) l
Dimensions inches (mm)
.252±.039
(6.4±1.0)
.650±.039
(16.5±1.0)
RW3, RW3N
.307±.059
(7.8±1.5)
RW5, RW5N
1.81±.059
(46.0±1.5)
RW10, RW10N
.512±.039
(13.0±1.0)
1.24±.039
(31.5±1.0)
.866±.039
(22±1.0)
Pb Free
Type
NEW
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,
cover ing 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 mar king
Products with lead-free ter minations meet
RoHS requirements. Pb located in glass material,
electrode and resistor element is exempt per Annex 1,
exemption 5 of EU directive 2005/95/EC
RW
coat insulated miniature precision
power wirewound resistors
Part
Designation
Max.
Overload
Voltage
Power Rating
applications and ratings
V
RW1/2
RW1/2N
RW1
RW7
RW1N
RW7N
RW2
RW10
RW2N
0.5W
1.0W
2.0W
7.0W
10W
500V
1 - 45.3k
1 - 60.4
1 - 45.3k
36 - 44.2k
1 - 60.4k
0.1 - 47k
±20:R10Ω
±50:1Ω≤R
<10Ω
±90:R<1Ω
36 - 43k
0.1 - 62k
D±0.5%
(E96) F±1%
(E96) H±3%
(E24) J±5%
(E24)
T.C.R.
(ppm/°C)
Resistance Range (Ω)
Derating Curve
environmental applications
% Rated Power
100
80
60
40
20
-100 -50 0 50 100 350
Ambient T emperature
(°C)
0
-55 150 200 300
275
250
25
V
U
Temperature Rise (°C)
350
250
200
150
0 40 80 120
% Rated Power
0160
50
100
RW2
RW1/2, RW1, RW3, RW5
RW7, RW10
300
200
Surface T emperature Rise
Resistance (Ω)
600
400
10 1k
RW1N
RW1N
RW1
0
Frequency (Hz)
10k1001
RW1
1000
100M100k RW1N
1M 10M
200
800
RW1
Resistance
T.C.R.
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
Within regulated tolerance
Within specified T.C.R.
Performance Characteristics
Parameter Requirement ΔR ±(% + 0.05Ω)Test Method
Overload (Short time) Rated power x 5 or Max.overload voltage, whichever is lower for 5 seconds
0.2: U
Resistance to Solder Heat 350°C ± 10°C, 3 seconds ± 0.5 seconds or 260°C ± 5°C,
10 seconds ± 1 second
0.1
Moisture Resistance Power rating x 1/10, 40°C, 90 - 95% RH, 1000 hours,
1.5 hr ON/0.5 hr OFF cycle
0.2: U
2:V
Endurance @ 25°C 25°C, 2000 hours
1.5 hr ON/0.5 hr OFF cycle
0.5: U
3:V
High Temperature Exposure
Max.
Working
Voltage
RW3
RW3N
RW5
RW5N
3.0W
5.0W
RW10N 62 - 49.9k 62 - 51k
U
1.0W
2.0W
3.0W
10W
14W
5.0W
7.0W
10 - 2.61k
1 - 5.11k
1 - 10k
1 - 15k
1 - 30.1k
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
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
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
80V
130V
140V
600V
1000V
200V
400V
150V
300V
800V
1500V
600V
700V
Frequency Characteristics
2:V Rated power x 10 or Max. overload voltage, whichever is lower for 5 seconds
275+5 °C, 250 hours
-0
0.2: U
2:V 350+5 °C, 250 hours
-0
127
KOA Speer Electronics, Inc. • Bolivar Driv e • P.O. Box 547 • Bradford, PA 16701 • USA • 814-362-5536 • Fax: 814-362-8883 • www.koaspeer.com
Specifications given herein may be changed at any time without prior notice. Please confirm technical specifications before you order and/or use. 4/20/05
resistors