參數(shù)資料
型號(hào): PWC
廠商: TT Electronics / Welwyn
英文描述: Pulse Withstanding Chip Resistors
中文描述: 脈沖耐貼片電阻
文件頁數(shù): 4/4頁
文件大?。?/td> 474K
代理商: PWC
Temperature Derating Curve
125
100
Ambient Temperature /
°
C
%
75
50
25
0
-15
70
155
Pulse Withstanding
Chip Resistors
PWC Series
Welwyn Components Limited
Bedlington, Northumberland NE22 7AA, UK
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
Thermal Performance Data
Issue G · 03.06
Packaging
0805 and 1206 PWC series resistors are
supplied on 8mm carrier tape and 7 inch
reels as per IEC 286-3, quantity per
reel; 3000.
2010 and 2512 PWC series resistors are
supplied on 12mm carrier tape and 7
inch reels as per IEC 286-3, quantity per
reel; 2010 : 3000pcs; 2512 : 1800pcs.
Reels of 1000pcs are available on
request.
PWC resistors are ideally suited for handling by automatic
methods due to their rectangular shape and the small
dimensional tolerances. Electrical connection to a ceramic
substrate or to a printed circuit board can be made by reflow
or wave soldering of wrap-around terminations.
Wrap-around terminations provide good leach properties and
ensure reliable contact. Due to the robust construction, the
PWC can be immersed in the solder bath for 30 seconds at
260°C. This enables the resistor to be mounted on one side
of a printed circuit board and wire-leaded components
applied on the other side.
PWC resistors themselves can operate at a maximum
temperature of 155°C. For soldered resistors, the joint
temperature should not exceed 110°C. This condition is met
when the stated power levels at 70°C and recommended pad
and trace areas are used. Allowance should be made if
smaller areas of copper are used.
A full Application Note on the PWC Series is available.
Ordering Procedure
Specify type reference etc as shown in this example of
PWC2512 10K ohms 1%.
Temperature Rise Curves
80
Power Dissipation /W
T
°
C
60
40
20
0
0
0.5
1
1.5
0805
1206
2010
2512
Application Notes
2.5 ± 0.5
13 ± 0.5
33 ± 1.0
Marking
0.8 ± 0.15
8
1
9.0
8mm tape: 9mm ± 0.5
12mm tape: 13mm ± 0.5
+ 0.1
P
1
A
0
B
0
D
1
D
0
P
0
P
2
G
F
W
E
T
2
T
1
K
0
T
Tape dimensions in mm
W
±0.3
8
8
12
12
P1
±0.1
4
4
4
8
P0
±0.1
4
4
4
4
P2
D0
±0.1
1.5
1.5
1.5
1.5
D1
±0.2
1
1
1.5
1.5
E
F
A0
±0.1
1.65
1.95
2.79
3.61
B0
±0.1
2.45
3.55
5.89
6.96
K0
±0.1
0.8
1.0
0.91
1.17
T
T1
nom
0.05
0.05
0.06
0.06
T2
±0.05
2
2
2
2
±0.1
1.75
1.75
1.75
1.75
±0.05
3.5
3.5
5.5
5.5
±0.05
0.2
0.2
0.28
0.28
±0.15
1.1
1.3
1.21
1.45
0805
1206
2010
2512
Type
PWC
2512
-
10K
F
Size
Value (use IEC62 code)
Tolerance (use IEC62 code)
D
0.5%
F
1%
J
5%
Welwyn Components
相關(guān)PDF資料
PDF描述
PWC1206-10KD Pulse Withstanding Chip Resistors
PWC1206-10KF Pulse Withstanding Chip Resistors
PWC1206-10KJ Pulse Withstanding Chip Resistors
PWC2010-10KD Pulse Withstanding Chip Resistors
PWC2512-10KD Pulse Withstanding Chip Resistors
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