Resistors
Double-Sided
Make Possible
Welwyn Components
Chip Resistors
Double-Sided Chip Resistors
DSC Series
DSC Series
Two parallel resistance elements in a single chip
Two parallel resistance elements
Excellent pulse withstand performance
in a single chip
Laser trimmed up to 0.5% tolerance
Excellent pulse withstand performance
Enhanced working voltage
Laser trimmed up to 0.5% tolerance
Enhan ced power rating
Enhanced working voltage
Pb-free terminations
Enhanced power rating
Anti-sulphur version availab le.
Pb-free terminations
All Pb-free parts comply with EU Directive 2011/65/EU (RoHS2)
Electrical Data
0805 1206 2010 2512
Power @70C Watts 0.33 0.75 1.5
0.25
2 second overload power @25C Watts 2.1 4.7 9.4
1.6
Short pulse performance See graphs
Resistance range Ohms 1R0 to 4M7
1R0 to 1M0
Tolerance % 10R to 1M: 0.5, All values: 1, 5
LEV Volts 200 400 500
150
TCR ppm/C <10R:200 >_10R:100
Operating temperature C -55 to +155
Dielectric withstand voltage Volts 500
Thermal Impedance C/W 210 160 80 50
2
Pad & trace area for rated power* mm 40 50 60 100
Values 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
0805 2.00.3 1.250.2 0.7 0.30.15 0.9 0.30.15 0.012
T
A
1206 3.20.4 1.60.2 0.7 0.40.2 1.7 0.40.15 0.020
B
L
W
A
2010 5.10.3 2.50.2 0.8 0.60.3 3.0 0.60.25 0.036
Wrap-around terminations
(3 faces)
2512 6.50.3 3.20.2 0.8 0.60.3 4.4 0.60.25 0.055
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
General Note
Welwyn Components reserves the right to make changes in product specification without notice or liability.
TT Electronics reserves the right to make changes in product specification without notice or liability.
A subsidiary of
All information is subject to Welwyns own data and is considered accurate at time of going to print.
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
TT electronics plc
www.ttelectronicsresistors.com
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
TT Electronics plc
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com 04. 08
07.14Double Sided
Double Sided
Chip Resistors Make Possible
Chip Resistors
DSC Series Welwyn Components
DSC Series
Performance Data
Maximum Typical
Load at rated power: 1000 hours at 70C R% 1 0.25
Derating from rated power at 70C R% Zero at 155C
Overload: 6.25 x rated power for 2 seconds 1 0.1
Shelf life test: 12 months at room temperature R% 0.1 0.02
Dr y heat: 1000 hours at 155C R% 1 0.2
Long term damp heat R% 1 0.25
Temperature rapid change R% 0.25 0.05
Resistance to sulphur-bearing gas (AS version only): ASTM- 0.25 0.05
B-809
Note: A 0.01 Ohm addition to be added to the performance of all resistors <10 Ohms.
Pulse Performance Data
Lightning Surge
1.2/50s Lightning Surge
Resistors are tested in
10,000
accordance with IEC 60 115-1 using
2512
both 1.2/50s and 10/700s pulse
shapes. 10 pulses are applied. The 2010
1206
limit of acceptance is a shift in
1,000
0805
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)
10/700s Lightning Surge
10,000
2512
2010
1,000
1206
0805
100
10
10 100 1,000 10,000 100,000 1,000,000 10,000,000
Value (ohms)
General Note
TT Electronics reserves the right to make changes in product specification without notice or liability.
Welwyn Components Limited Bedlington, Northumberland NE22 7AA, UK
All information is subject to TT Electronics own data and is considered accurate at time of going to print.
Telephone: +44 (0) 1670 822181 Facsimile: +44 (0) 1670 829465 Email: info@welwyn-tt.com Website: www.welwyn-tt.com 07. 08
www.ttelectronicsresistors.com
TT Electronics plc
07.14
Peak Voltage (V) Peak Voltage (V)