PWC1206-10KF [TTELEC]
Pulse Withstanding Chip Resistors; 耐脉冲片式电阻器
| 型号： | PWC1206-10KF |
| 厂家： | 
TT Electronics |
| 描述： | Pulse Withstanding Chip Resistors |
| 文件： | 总4页 (文件大小：465K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Pulse Withstanding
Chip Resistors
Weellwwyynn CCoommppoonneennttss
PWC Series
• Excellent pulse withstand performance
• Improved working voltage
• Improved power rating
• Standard chip sizes (0805 to 2512)
• Custom designs available
Electrical Data
Size
0805
1206
2010
2512
Power @70°C
Resistance range
Tolerance
W
Ohms
%
0.125
0.33
0.75
1.5
1R0 to 10M
10R to 1M: 0.5, All values: 1, 5
200 400
<10R:200 ≥10R:100
-55 to +155
LEV
V
150
500
TCR
ppm/°C
°C
Operating temperature
Thermal Impedance
Pad / trace area*
Values
°C/W
mm2
220
40
160
50
80
60
50
100
E24 or E96 preferred other values to special order
See graphs - full application note available on request
Pulse capability
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
Physical Data
Dimensions of PWC resistors are given below in mm and weight in g
L
W
T max
0.6
A
B
C
Wt.
T
0805
1206
2010
2512
2.0 0.3
3.2 0.4
5.1 0.3
6.5 0.3
1.25 0.2
1.6 0.2
2.5 0.2
3.2 0.2
0.3 0.15
0.4 0.2
0.6 0.3
0.6 0.3
0.9 min
1.7 min
3.0 min
4.4 min
0.3 0.1
0.4 0.15
0.6 0.25
0.6 0.25
0.009
0.020
0.036
0.055
A
0.7
B
L
W
A
0.8
Wrap-around terminations
(3 faces)
0.8
Construction
Marking
Thick film resistor material, overglaze and organic protection
are screen printed on a 96% alumina substrate. Wrap-around
terminations have an electroplated nickel barrier and solder
coating, this ensures excellent ‘leach’ resistance properties
and solderability.
Components are not marked. Reels are marked with type,
value, tolerance, date code and quantity.
Solvent Resitance
The body protection is resistant to all normal industrial
cleaning solvents suitable for printed circuits.
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: info@welwyn-tt.com · Website: www.welwyn-tt.com
Issue G · 03.06
37
Pulse Withstanding
Chip Resistors
PWC Series
Weellwwyynn CCoommppoonneennttss
Performance Data
Size
Maximum
Typical
0.25
Load at rated power: 1000 hours at 70°C
Shelf life test: 12 months at room temperature
Derating from rated power at 70°C
Overload: 6.25 x rated power for 2 seconds
Dry heat: 1000 hours at 155°C
Long term damp heat
∆R%
∆R%
1
0.1
0.02
Zero at 155°C
∆R%
∆R%
∆R%
∆R%
∆R%
Volts
1
1
0.1
0.2
1
0.25
0.05
0.05
Temperature rapid change
Resistance to solder heat
Voltage proof
0.25
0.25
500
Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms.
Pulse Performance Data
1.2/50µs Lightning Surge
10000
1000
100
0805
1206
2010
2512
10
Lightning Surge
1
10
100
1000
Value (ohms)
10000
100000
1000000
10000000
Resistors are tested in accordance with
IEC 60 115-1 using both 1.2/50µs and
10/700µs pulse shapes. The limit of
acceptance is a shift in resistance of less
than 1% from the initial value.
10/700µs Lightning Surge
10000
1000
100
0805
1206
2010
2512
10
1
10
100
1000
10000
100000
1000000
10000000
Value (ohms)
© 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
Issue G · 03.06
Pulse Withstanding
Chip Resistors
PWC Series
Weellwwyynn CCoommppoonneennttss
Pulse Performance Data
Single Pulse
1000
100
10
0805
1206
2010
2512
1
0.0001
0.001
0.001
0.001
0.01
0.1
0.1
0.1
1
1
1
Pulse Duration ti (s)
Single Impulse
The single impulse graph is the result of
50 impulses of rectangular shape
applied at one minute intervals. The
limit of acceptance was a shift in
resistance of less than 1% from the
initial value. The power applied was
subject to the restrictions of the
maximum permissible impulse voltage
graph as shown.
Continuous Pulses
100
10
1
0805
1206
2010
2512
Continuous Load Due to
Repetitive Pulses
The continuous load grpah was
obtained by applying repetitive
rectangular pulses where the pulse
period was adjusted so that the average
power dissipated in the resistor was
equal to its rated power at 70°C. Again
the limit of acceptance was a shift in
resistance of less than 1% from the
initial value.
0.1
0.0001
0.01
Pulse Duration ti (s)
Pulse Voltage
10000
1000
100
0805
1206
2010
2512
10
0.0001
0.01
Pulse Duration ti (s)
© 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
Issue G · 03.06
Pulse Withstanding
Chip Resistors
PWC Series
Weellwwyynn CCoommppoonneennttss
Thermal Performance Data
Temperature Derating Curve
Temperature Rise Curves
125
100
75
50
25
0
80
60
40
20
0
0805
1206
2010
2512
-15
70
155
0
0.5
1
1.5
Ambient Temperature /°C
Power Dissipation /W
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.
T2
Pꢀ
8mm tape: 9mm ꢀ.5
12mm tape: 13mm ꢀ.5
Dꢀ
P2
T
+ꢀ.1
33 1.ꢀ
9.ꢀ
- ꢀ.15
Marking
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.
13 ꢀ.5
T1
Aꢀ
D1
ꢀ.8 ꢀ.15
2.5 ꢀ.5
Kꢀ
P1
Reels of 1000pcs are available on
request.
Tape dimensions in mm
W
0.3
8
P1
0.1
4
P0
0.1
4
P2
0.05
2
D0
0.1
1.5
1.5
1.5
1.5
D1
E
F
A0
B0
K0
0.1
T
T1
T2
0.2
1
0.1
1.75
1.75
1.75
1.75
0.05
3.5
3.5
5.5
5.5
0.1
1.65
1.95
2.79
3.61
0.1
2.45
3.55
5.89
6.96
0.05 nom
0.15
1.1
0805
1206
2010
2512
0.8
0.2
0.2
0.05
0.05
0.06
0.06
8
4
4
2
1
1.0
1.3
12
12
4
4
2
1.5
1.5
0.91
1.17
0.28
0.28
1.21
1.45
8
4
2
Application Notes
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.
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
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.
Specify type reference etc as shown in this example of
PWC2512 10K ohms 1%.
Type
Size
PWC
2512
-
10K
F
Value (use IEC62 code)
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
Tolerance (use IEC62 code)
D
F
J
0.5%
1%
5%
© 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
Issue G · 03.06
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