Axial Round Wirewound Resistor
Normal & Miniature Style
RWW Series
Axial Round Wirewound Resistor – Normal & Miniature Style
Features
Low cost, high performance, excellent long-term stability
Wide resistance range (1Ω to 1MΩ & 0Ω for E24 series value)
Standard tolerance: ±5% (±1% is available on request)
RoHS Compliant
Mechanical Data
Complete flameproof construction in accordance with article UL-94V-0
The resistors meet overload tests in accordance with UL specification #1412 without producing a fire hazard
Bulk, tape and reel standard, cut and formed, or radial Panasert/Avisert available upon request
Absolute Maximum Ratings & Characteristics
Description
Power Rating at
70° C
Rated Ambient
Temperature
Dielectric
Withstanding
Voltage
Resistance
Range ±1%
(Note 1)
Resistance
Range ±5%
(Note 1)
Operating
Temperature
Range
Temperature
Coefficient
250
200
300
300
RWW
25T
RWW
S50T
RWW
50T
RWW
S1W
RWW
1W
RWW
S2W
RWW
2W
RWW
S3W
RWW
3W
RWW
4W
RWW
S5W
RWW
5W
RWW
S7W
RWW
7W
Unit
W
°C
1/4
1/2
1/2
1
70
1
2
2
3
3
4
5
40
5
7
7
400
400
400
400
400
400
400
400
400
400
V
0.22~150
0.1~800
0.1~1.8K
0.1~2.8K
0.1~7.5K
0.1~6.5K
Ω
0.5~200
0.03~800
0.015~2.2K
0.015~2.5K
0.02~7.5K
0.03~6.8K
Ω
-40 to +200
±300
°C
ppm/° C
Note 1:
E-24 series, below or over this resistance available on request
TAITRON COMPONENTS INCORPORATED
www.taitroncomponents.com
Tel: (800)-TAITRON
Fax: (800)-TAITFAX
(800)-824-8766
(800)-824-8329
(661)-257-6060
(661)-257-6415
Rev. B/CW
Page 1 of 8
Axial Round Wirewound Resistor - Normal & Miniature Style
RWW Series
Power Derating Curve
For resistors operated in ambient temperature above 40°C, power rating must be derate in accordance
with following curve below.
Percentage of the rated dissipating (%)
Ambient Temperature (° C)
Dimensions (in
mm)
Outline
T-25
T-50
T-100
T-200
T-300
Type
Normal
RWW25T
RWW50T
RWW1W
RWW2W
RWW3W
RWWS5W
RWW4W
RWW5W
Miniature
RWWS50T
RWWS1W
RWWS2W
RWWS3W
L
6.3±0.5
9.0±0.5
11.5±1.0
15.5±1.0
17.5±1.0
ØD
2.4±0.2
3.3±0.3
4.5±0.5
5.0±0.5
6.5±1.0
H
28±2.0
26±2.0
35±2.0
33±2.0
32±2.0
Ød
0.55±0.05
0.55±0.05
0.8±0.05
0.8±0.05
0.8±0.05
T-510
RWW7W
RWWS7W
24.5±1.0
8.0±0.5
38±2.0
0.8±0.05
Rev. B/CW
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Page 2 of 8
Axial Round Wirewound Resistor - Normal & Miniature Style
RWW Series
Environmental Performance Specification
Item
Short Time Overload
Dielectric Withstanding Voltage
Temperature Coefficient
Insulation Resistance
Solderability
Resistance to Solvent
Terminal Strength
Load Life in Humidity
Load Life
Temperature Cycling
Resistance to Soldering Heat
IEC 60115-1
4.13
IEC 60115-1 4.7
IEC 60115-1 4.8
IEC 60115-1 4.6
IEC 60115-1
4.17
IEC 60115-1
4.30
IEC 60115-1
4.16
IEC 60115-1
4.24
IEC 60115-1
4.25
IEC 60115-1
4.19
IEC 60115-1
4.18
Test Methods
10 times rated power for 5 Sec.
In V-Block for 60 Seconds
-55°C to +155°C
In V-Block for 60 Sec.
235±5°C for 3±0.5 Seconds
IPA for 5±0.5 minute with Ultrasonic
Direct Load for 10 Seconds in The
Direction of the Terminal Leads
40±2°C , 90-95% RH at RCWV for
56 days, loaded with 0.1 times
RCWV
70°C at RCWV for 1000 Hrs
(1.5 Hrs. on, 0.5 Hrs. off)
-55°C Room Temp.
+155°C
Room Temp. for 5 Cycles
260±3°C for 10±1 Seconds,
immersed to a point 3±0.5mm from
the body
Specifications
±(2%+0.05Ω)
by Type
by Type
>100MΩ
95% Min. Coverage
No Deterioration of
Coatings and Markings
>=2.5kg (24.5N)
±(5%+0.05Ω)
±(5%+0.05Ω)
±(1%+0.05Ω)
±(1%+0.05Ω)
* Rated Continuous Working Voltage (RCWV) =√Power Rating x Resistance Value
Rev. B/CW
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Page 3 of 8
Axial Round Wirewound Resistor - Normal & Miniature Style
RWW Series
Packing Information
Carrier Tape Dimensions
(in mm)
Outline
T-25
T-50
T-100
T-200
T-300
T-510
A
52.4±1.5
52.4±1.5
73.0±1.5
73.0±1.5
73.0±1.5
91.0±1.5
B1-B2
1.2
1.2
1.5
1.5
1.5
1.5
S
(Spacing)
5
5
5
10
10
10
a
6±0.5
6±0.5
6±0.5
6±0.5
6±0.5
6±0.5
T
(Max. Deviation of Spacing)
1mm per 10 spacings,
0.5mm per 5 spacings
Tape on Reel Pack Information
Rev. B/CW
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Page 4 of 8
Axial Round Wirewound Resistor - Normal & Miniature Style
RWW Series
Outline
T-25
T-50
T-100
T-200
T-300
T-510
Reel/Inner Box
Qty.
(pcs)
5,000
2,500
2,000
1,000
500
500
Across
Flange (A)
(cm)
7.2
7.2
9.5
9.5
9.5
11.3
Inner Box Size
(LxWxH)
(cm)
29.0x8.0x29.6
29.0x8.0x29.6
29.2x9.8x29.6
29.2x9.8x29.6
29.2x9.8x29.6
29.2x11.8x29.6
Inner Box
Weight
(kg)
1.40
1.38
1.95
1.50
2.20
2.50
Carton
Qty.
(pcs)
50,000
25,000
20,000
10,000
5,000
4,000
Carton Size
(LxWxH)
(cm)
60.0x30.5x43.5
60.0x30.5x43.5
60.0x30.5x54.5
60.0x30.5x54.5
60.0x30.5x54.5
60.0x30.5x54.5
Carton
Weight
(kg)
16
15
21
16
23
21
Ammo Pack Information
Outline
T-25
T-50
T-100
T-200
T-300
T-510
Inner Box
Qty.
(pcs)
5,000
1,000
1,000
1,000
250
250
Inner Box Size
(LxWxH)
(cm)
25.8x7.4x9.0
26.5x9.7x7.8
26.3x9.7x9.5
26.3x9.7x9.5
25.5x11.6x7.9
25.5x11.6x7.9
Inner Box
Weight
(kg)
1.08
0.36
0.74
1.20
1.15
1.15
Carton
Qty.
(pcs)
75,000
30,000
12,000
12,000
3,500
3,500
Carton Size
(LxWxH)
(cm)
42.5x28.0x34.8
42.5x28.0x34.8
42.5x28.0x34.8
42.5x28.0x34.8
42.5x28.0x34.8
42.5x28.0x34.8
Carton
Weight
(kg)
16.30
10.90
8.98
14.50
18.00
18.00
Rev. B/CW
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Page 5 of 8
