DSC [TTELEC]
Double-Sided Chip Resistors; 双面贴片电阻
| 型号： | DSC |
| 厂家： | 
TT Electronics |
| 描述： | Double-Sided Chip Resistors |
| 文件： | 总5页 (文件大小：152K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
Double-Sided
Chip Resistors
Welwyn Components
DSC Series
Two parallel resistance elements
in a single chip
•
Excellent pulse withstand performance
•
Laser trimmed up to 0.5% tolerance
•
Enhanced working voltage
•
Enhanced power rating
•
Pb-free terminations
•
Electrical Data
1206
0.33
2.1
2010
0.75
2512
1.5
Power @70°C
Watts
Watts
2 second overload power @25°C
Short pulse performance
Resistance range
Tolerance
4.7
9.4
See graphs
1R0 to 4M7
Ohms
%
10R to 1M: 0.5, All values: 1, 5
400
LEV
Volts
ppm/°C
°C
200
500
TCR
<10R:200 >10R:100
_
Operating temperature
Dielectric withstand voltage
Thermal Impedance
Pad & trace area for rated power*
Values
-55 to +155
Volts
°C/W
mm2
500
80
160
50
50
60
100
E24 or 96 preferred - other values to special order
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
Physical Data
Dimensions (mm) & Weight (g)
L
W
T max
A
B min
C
Wt.
C
1206
2010
2512
3.2 0.4
1.6 0.2
0.7
0.4 0.2
1.7
0.4 0.15
0.020
T
A
B
5.1 0.3
6.5 0.3
2.5 0.2
3.2 0.2
0.8
0.8
0.6 0.3
0.6 0.3
3.0
4.4
0.6 0.25
0.6 0.25
0.036
0.055
L
W
A
Wrap-around terminations
(3 faces)
Construction
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 Pb-free solderable coating, this ensures excellent ‘leach’ resistance properties and solderability.
Marking
Components are not marked. Reels are marked with type, value, tolerance, date code and quantity.
Solvent Resistance
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.
A subsidiary of
All information is subject to Welwyn’s own data and is considered accurate at time of going to print.
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 B · 01.06
Double Sided
Chip Resistors
DSC Series
Welwyn Components
Performance Data
Maximum
Typical
Load at rated power: 1000 hours at 70°C
Derating from rated power at 70°C
Overload: 6.25 x rated power for 2 seconds
Shelf life test: 12 months at room temperature
Dry heat: 1000 hours at 155°C
∆R%
1
0.25
Zero at 155°C
∆R%
∆R%
∆R%
∆R%
∆R%
∆R%
1
0.1
1
0.1
0.02
0.2
Long term damp heat
1
0.25
0.05
0.05
Temperature rapid change
0.25
0.25
Resistance to solder heat
Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms.
Pulse Performance Data
Lightning Surge
Resistors have been tested in
1.2/50µs Lightning Surge
accordance with IEC 60 115-1 using
10,000
both 1.2/50µs and 10/700µs pulse
shapes. Also, the 2512 size has
been tested to the Bellcore GR1089
2/10µs and 10/1000µs pulse shapes.
1,000
The limit of acceptance is a shift
1206
2010
2512
in resistance of less than 1% from
the initial value.
100
10
1
10
100
1,000
10,000
100,000
1,000,000 10,000,000
Value (Ohms)
10/700µs Lightning Surge
10,000
1,000
100
1206
2010
2512
10
10
100
1,000
10,000
100,000
1,000,000
10,000,000
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 B · 01.06
Double Sided
Chip Resistors
DSC Series
Welwyn Components
DSC2512 - Bellcore GR1089 Lightning Surge
10,000
1,000
100
2/10us
10/1000us
1
10
100
0.001
0.001
1,000
10,000
100,000
1,000,000 10,000,000
Value (Ohms)
Single Pulse
Single Pulse
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.
1,000
100
10
1206
2010
2512
1
0.0001
0.01
0.1
1
Pulse Duration (s)
Continuous Load Due
to Repetitive Pulses
Continuous Pulses
The continuous load graph 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.
1,000
100
10
1206
2010
2512
1
0.0001
0.01
0.1
1
Pulse Duration (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 B · 01.06
Double Sided
Chip Resistors
DSC Series
Welwyn Components
Thermal Performance Data
Temperature Derating Curve
125
100
75
50
25
0
-15
70
155
Ambient Temperature/°C
Temperature Rise Curves
80
60
40
20
0
1206
2010
2512
0
0.5
1
1.5
Power Dissipation/W
Packaging
1206 DSC series resistors are supplied on 8mm carrier tape and 7 inch reels as per IEC 286-3, quantity per reel; 3000.
2010 and 2512 DSC 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.
T2
P0
D0
P2
T
33 1.0
Wr
Marking
(Both sides)
13 0.5
T1
A0
D1
K0
P1
0.8 0.15
2.5 0.5
Tape and reel dimensions (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
D1
0.2
1
E
F
A0
0.1
B0
K0
T
T1
T2
0.1
1.75
1.75
1.75
0.05
3.5
0.1
3.55
5.89
6.96
0.1
1.0
0.05
0.2
nom
0.05
0.06
0.06
0.15
1.3
1206
2010
2512
1.95
2.79
3.61
12
12
4
4
2
1.5
1.5
5.5
0.91
1.17
0.28
0.28
1.21
1.45
8
4
2
5.5
© 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 B · 01.06
Double Sided
Chip Resistors
DSC Series
Welwyn Components
Application Notes
DSC 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.
of a printed circuit board and wire-leaded components
applied on the other side. DSC is compatible with typical
Pb-free soldering materials and temperature profiles
DSC 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.
Wrap-around terminations provide good leach properties and
ensure reliable contact. Due to the robust construction, the
DSC can be immersed in the solder bath for 30 seconds at
260°C. This enables the resistor to be mounted on one side
Ordering Procedure
Specify type reference etc as shown in this example of DSC2512 10K ohms 1%.
Type
Size
DSC
2512
-
10K
F
T 1 8
Value (use IEC62 code)
Tolerance (use IEC62 code)
Packing
D
F
J
0.5%
1%
T3
1206 or 2010
2512
3000/reel
1800/reel
Tape
Standard
T18
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 B · 01.06
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