WELWYN PW-50E

General Purpose Power
Wirewound Resistors
Welwyn Components
PW Series
• 2 watts to 25 watts
• 0.10 ohms to 30K ohms
• ±10% or ±5% tolerance
• TC’s from 300 ppm/°C to +5500 ppm/°C
Electrical Data
PW-2
PW-3
PW-5
PW-7
PW-10
PW-15
PW-18
PW-22
Power rating at 25°C
watts
2
3
5
7
10
15
18
22
25
Resistance range
ohms
0R15 to 2K4
0R1 to 7K5
0R1 to 8K5
0R1 to 18K
0R18 to 30K
0R18 to 30K
0R18 to 22K
0R27 to 18K
0R27 to 18K
Temperature coefficient 0.06%/°C
0.15 to 0.99
0.1 to 0.99
0.1 to 0.99
0.1 to 0.99
0.18 to 0.99
0.18 to 0.99
0.18 to 0.99
0.27 to 1.3
0.27 to 1.3
over R range
1.0 to 2.4K
1.0 to 7.5K
1.0 to 8.5K
1.0 to 18K
1.0 to 30K
1.0 to 30K
1.0 to 22K
1.5 to 12K
1.5 to 10K
0.1 to 240
0.1 to 240
0.1 to 200
0.15 to 360
0.15 to 300
0.03%/°C
+0.55%/°C
0.1 to 30
0.1 to 86
0.1 to 68
0.1 to 150
+0.45%/°C
0.24 to 130
0.1 to 270
0.1 to 300
0.15 to 680
+0.25%/°C
1.0 to 10
0.24 to 20
0.27 to 22
1.0 to 51
PW-25
0.24 to 1100 0.24 to 1100 0.24 to 1100 0.36 to 1800 0.36 to 1200
1.0 to 82
1.0 to 82
1.0 to 70
1.0 to 120
1.5 to 100
Please note: When ordering the alternative configuration please add an ‘A’ after the part number. (i.e., PW-2A)
Physical Data
Dimensions (mm)
L ±0.8
W ±0.8
H ±0.8
d dia.
E ±0.8
LL min.
F (ref.)
PW-2
17.5
6.35
6.35
0.8
7.87
36.6
1.60
PW-3
22.4
7.87
7.87
0.91
9.65
36.6
1.60
PW-5
22.4
9.65
8.64
0.91
10.4
38.1
1.60
PW-7
35.3
9.65
8.64
0.91
11.9
38.1
3.18
PW-10
47.8
9.65
8.64
0.91
11.9
38.1
3.18
PW-15
47.8
12.7
12.7
0.91
16.0
38.1
3.18
PW-18
47.8
12.7
12.7
0.91
16.0
38.1
3.18
PW-22
63.5
12.7
12.7
1.0*
16.0
38.1
3.18
PW-25
63.5
12.7
12.7
1.0*
16.0
38.1
3.18
* Copper Clad Steel
Standard Configuration
Alternate Configuration
d
W
E
H
LL
L
0.125 max.
F
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
Issue B · 03.02
111
General Purpose Power
Wirewound Resistors
Welwyn Components
PW Series
Power Derating
25 40
85
300
PW-22, 25
250
PW-15, 18
PW-2
Temperature Rise (°C)
Percent of Rated Load
100
Temperature Rise
80
PW-3, 5, 7, 10
60
PW-15, 18, 22, 25
40
20
0
0
50
100
150
200
Ambient Temperature (°C)
250
PW-10
PW-7
PW-5
PW-3
200
150
100
50
0
0
20 40 60 80 100 120
Percent of Rated Load
Packaging
Resistors are supplied bulk packed. Quantity 500.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
112
Issue B · 03.02
General Purpose Power
Wirewound Resistors
Welwyn Components
PW Series
• 20 watts to 50 watts
• 0.10 ohms to 2.0K ohms
• ±10% or ±5% tolerance
• Customs
Electrical Data
PW-20E
PW-30
PW-40
Power rating at 25°C
watts
20
30
40
PW-50E
50
Resistance range
ohms
0R1 to 2K
0R5 to 1K2
0R65 to 1K5
0R08 to 1K8
Please note: When ordering the alternative configuration please add an ‘A’ after the part number. (i.e., PW-2A)
Dimensions (Inches)
A ±0.030
PW-20E
1.875
PW-30
2.00
PW-40
2.45
PW-50E
3.075
PW-20E Wirewound
B ±0.060
2.50
2.55
3.00
3.625
PW-30, 40 and 50E Wirewound
0.250 (Typ.)
5/32 Dia. Thru (2)
5/32 Dia. Thru (2)
0.032±0.0025
A
A
0.032±0.0025
0.282±0.020
0.157±0.020
0.75±0.030
Power Derating
Percent of Rated Load
100
PW-20E, PW-30, PW-40
PW-50E without bracket
80
0.75
0.375
0.200 (Typ.)
0.125±0.015
0.205 or 0.187±0.005
40
B
0.75±0.030
0.875
0.5±0.030
60
0.069±0.005
20
0
0.25
0.5±0.030
0.135±0.015
0.25±0.031
0
50
100
150
200
Ambient Temperature (°C)
250
PW-20E Alternate Terminal Configuration
Printed Circuit Terminal
With Bracket:
PW-30 Increased to 40 watts
PW-40 Increased to 50 watts
PW-50 Increased to 60 watts
0.020
PW-15E
0.500±0.030
Temperature Rise
0.250 min.
2.000±0.040
Temperature Rise (°C)
300
PW-50E
250
1.410±0.040
0.060 Dia. (2)
200
0.187±0.010
PW-20E
PW-40
150
100
PW-30
0.840±0.040
50
0
1.050 Min.
0.500±0.030
0
25
50
75
100
Percent of Rated Load
125
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
A subsidiary of
TT electronics plc
© Welwyn Components Limited · Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
Issue B · 03.02
113
General Purpose Power
Wirewound Resistors
Welwyn Components
PW Series
PW-30E
0.250±0.020
Meniscus allowable to
the termination edge
1.106±0.050
0.205±0.020
0.900±0.050
0.375±0.040
0.709±0.030
0.062 Rad. (2)
0.273±0.010 Dia.
0.125 Rad. (Ref.)
0.290±0.030
0.155±0.005
0.685±0.060
1.000±0.040
0.500±0.030
3.000±0.040
0.020
2.375±0.040
0.313±0.050
0.187±0.020
0.020
0.900
±0.050
0.500±0.040
0.060 Dia. (2)
See Meniscus Note
Packaging
Resistors are supplied bulk packed. Quantity 500.
© Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: [email protected] · Website: www.welwyn-tt.com
114
Issue B · 03.02