DSC WELWYN [Welwyn Components Limited], DSC Datasheet

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DSC

Manufacturer Part Number
DSC
Description
Double-Sided Chip Resistors
Manufacturer
WELWYN [Welwyn Components Limited]
Datasheet

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Physical Data
Construction
Thick film resistor material, overglaze and organic protection are screen printed on a 96% alumina substrate. Wrap-around terminations
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.
Double-Sided
Chip Resistors
DSC Series
Electrical Data
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.
© Welwyn Components Limited
Telephone: +44 (0) 1670 822181 · Facsimile: +44 (0) 1670 829465 · Email: info@welwyn-tt.com · Website: www.welwyn-tt.com
have an electroplated nickel barrier and Pb-free solderable coating, this ensures excellent ‘leach’ resistance properties and solderability.
Power @70°C
2 second overload power @25°C
Short pulse performance
Resistance range
Tolerance
LEV
TCR
Operating temperature
Dielectric withstand voltage
Thermal Impedance
Pad & trace area for rated power*
Values
Dimensions (mm) & Weight (g)
1206
2010
2512
Enhanced power rating
Pb-free terminations
Two parallel resistance elements
in a single chip
Excellent pulse withstand performance
Laser trimmed up to 0.5% tolerance
Enhanced working voltage
3.2±0.4
5.1±0.3
6.5±0.3
L
1.6±0.2
2.5±0.2
3.2±0.2
W
· Bedlington, Northumberland NE22 7AA, UK
T max
0.7
0.8
0.8
*
Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
ppm/°C
Watts
Watts
Ohms
°C/W
Volts
Volts
mm
0.4±0.2
0.6±0.3
0.6±0.3
°C
%
2
A
B min
1.7
3.0
4.4
1206
0.33
200
160
2.1
50
E24 or 96 preferred - other values to special order
0.4±0.15
0.6±0.25
0.6±0.25
C
10R to 1M: 0.5, All values: 1, 5
0.020
0.036
0.055
<10R:200 >10R:100
Wt.
-55 to +155
1R0 to 4M7
See graphs
0.75
2010
400
500
4.7
80
60
_
A
Welwyn Components
Wrap-around terminations
L
B
(3 faces)
A
2512
100
500
1.5
9.4
50
W
TT electronics plc
A subsidiary of
Issue B · 01.06
C
T

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DSC Summary of contents

Page 1

... Double-Sided Chip Resistors 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 Power @70°C 2 second overload power @25°C ...

Page 2

... Double Sided Chip Resistors DSC Series Performance Data 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 Long term damp heat ...

Page 3

... 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 DSC2512 - Bellcore GR1089 Lightning Surge 10,000 1,000 100 1 ...

Page 4

... 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. ...

Page 5

... 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 DSC 2512 ...

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