High Power Dissipation
SMT Chip Resistor
SC3 Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
© TT electronics plc
10. 11
· Tolerances to ±1%
· 3 watt rating at 70°C
· Resistance range from 1 to 100KΩ
· Standard Sn/Pb and matte tin
(Pb-free) terminations available
General Note
A subsidiary of
TT electronics plc
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com SC3 Series Issue October 2008
IRC reserves the right to make changes in product specification without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print.
High Power Dissipation
SMT Chip Resistor
s Tolerances to ±1%
s 3 watt rating at 70°C
s Resistance range from 1 to 100K
s Standard Sn/Pb and matte tin (Pb-free) terminations available
SC3 Series
Electrical Data Power Derating Chart
√
_____
Resistance Range 1 to 100K
Resistance Tolerance ±1%, ±2%, ±5%
Temperature Coefficient ±100 ppm/°C
Power Dissipation 3.0 Watts* @70°C
Maximum Voltage Rating
(not to exceed P X R ) 100 Volts
Operating Temperature
Range -55°C to +150°C
Termination
Leach-resistant nickel barrier
under solder-plated wrap-
around
*Note: With 1” square copper area as heat spreader.
Physical Data
25° 70° 150°
100
50
10
% Of Rated Power
Temperature in °C
0.090” ±.005”
0.032” ±.005”
Plating
wrap-around
0.030” ±.005”
thickness
BOTTOM
(Board Side)
0.250” ± .005”
0.125” ±.005”
TOP
0.020”±.005” 0.30”
7.6mm
0.04”
(1mm)
0.08”
(2.0mm)
RECOMMENDED SOLDER
PAD LAYOUT
SCHEMATIC
High Power Dissipation
SMT Chip Resistor
SC3 Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
© TT electronics plc
10. 11
SC3 Series Issue October 2008
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Temperature Rise vs Pad Area
Pulse Power Rating
High Power Dissipation
SMT Chip Resistor
100mm21000mm2
10
100
1000
Temperature Rise (°C)
200mm2
Te rmination Pad Area (each end)
1 watt 2 watts 3 watts
Time (sec)
100
10
1
0.1 1.0 10.0
Power (watts)
High Power Dissipation
SMT Chip Resistor
SC3 Series
www.bitechnologies.com www.irctt.com www.welwyn-tt.com
General Note
TT electronics reserves the right to make changes in product specification without notice or liability.
All information is subject to TT electronics’ own data and is considered accurate at time of going to print.
© TT electronics plc
10. 11
SC3 Series Issue October 2008
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Ordering Data
Prefix SCW - SC3LF - 33R0 - F
Model
SC3 = 3 watt chip with standard Sn/Pb termination
SC3LF = 3 watt chip with matte tin (Pb-free) termination
Resistance Code
Standard 4-digit resistance code
Example: 33R0 = 33; 10K0 = 10,000
Resistance Tolerance Code
J = ±5%; G = ±2%; F = ±1%
Packaging
Available in both bulk and tape & reel.
Environmental Data
For additional information or to discuss your specific requirements,
please contact our Applications Team using the contact details below.
Environmental Test Test Method Specification
Thermal Shock MIL-STD-202 Method 107
Condition B, -65°C + 125°C R ±0.5% + 0.01
Short-time Overload 2x rated power for 5 seconds R ±0.5% + 0.01
High Temperature Exposure 100 Hours, 150°C R ±0.5% + 0.01
Moisture Resistance MIL-STD-202 Method 106 R ±0.5% + 0.01
Load Life Rated Power @ 70°C for 1000 hours;
1.5 hours ‘on’, 0.5 hours ‘off’ R ±1.0% + 0.01
Low Temperature Operation 1 hour @ -65°C followed by
Rated power for 45 minutes R ±0.5% + 0.01
Resistance To Solder Heat MIL-STD-202 Method 210
260°C, 5 seconds R ±0.25% + 0.01
Solderability MIL-STD-202 Method 208
245°C, 5 seconds 95% coverage
High Power Dissipation
SMT Chip Resistor
