Pulse Withstanding
Chip Resistors
PWC 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
· Higher power ratings
· Improved working voltage ratings
· Excellent pulse withstanding performance
· Sn/Pb or Pb-free wrap-around terminations
· Standard chip sizes available from 0805 to 2512
General Note
IRC reserves the right to make changes in product specication without notice or liability.
All information is subject to IRC’s own data and is considered accurate at time of going to print. A subsidiary of
TTelectronics plc
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s Higher power ratings
s Improved working voltage ratings
s Excellent pulse withstanding performance
s Sn/Pb or Pb-free wrap-around terminations
s Standard chip sizes available from 0805 to 2512
Pulse Withstanding
Chip Resistors
Environmental Data
Test Maximum1 R Typical R
Load life at rated power (1000 hours @ 70°C) 1.00% 0.25%
Overload (5.0 X rated power for 2512, 6.25 X rated power for other sizes, 5 secs) 1.00% 0.10%
High temperature storage (1000 hours @ 155°C) 1.00% 0.20%
Moisture resistance 1.00% 0.25%
Thermal shock 0.25% 0.05%
Resistance to soldering heat 0.25% 0.05%
Note BEEFEGPSBMMSFTJTUBODFWBMVFT .
PWC Series
Electrical Data
0805Size
Power @70°C W
Resistance range Ohms
Tolerance %
LEV V
TCR ppm/°C
Operating temperature °C
Thermal Impedance °C/W
Pad / trace area *
Values
0.125
150 200 400 500
1R0 to 10M
10R to 1M: 0.5, All values: 1, 5
<10R:200 ≥10R:100
E96 preferred - other values to special order
See graphs – full application note available on request
-55 to +155
0.33 0.5 0.75 1.5 21
220 160 145 80 55 4070
40 50 125 60 100 500250
mm2
1206 2010 2512
Pulse Capability
*Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB
Pulse Withstanding
Chip Resistors
PWC 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
PWC Series Issue January 2009
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
1.2/50 µS Lightning Surge
10
100
1000
10000
110100 1000 10000 1000001000000 10000000
Resistance (ohms)
Peak voltage (volts)
0805
1206
2010
2512
10/700 µS Lightning Surge
10
100
1000
10000
110100 1000 10000 1000001000000 10000000
Resistance (ohms)
Peak Voltage (volts)
2512
2010
1206
0805
Pulse Withstanding
Chip Resistors
Lighting Surge
Resistors are tested in accordance with IEC 60 115-1 using both 1.2/50s and 10/700s pulse shapes. The limit of acceptance
is a shift in resistance of less than 1% from the initial value.
Pulse Performance Data
Pulse Withstanding
Chip Resistors
PWC 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
PWC Series Issue January 2009
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Pulse Voltage
10
100
1000
10000
0.0001 0.0010.010.1 1
Pulse Duration (seconds)
Pulse Voltage (Volts)
0805
1206
2010
2512
Continuous Pulses
0.1
1
10
100
0.0001 0.0010.010.11
Pulse Duration (seconds)
Pulse Power (watts)
0805
1206
2010
2512
Single Pulse
1
10
100
1000
0.0001 0.0010.010.1 1
Pulse duration (seconds)
Pulse Power (watts)
0805
1206
2010
2512
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 shown.
Continuous load due to
repetitive 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.
Pulse Withstanding
Chip Resistors
Pulse Performance Data
Pulse Withstanding
Chip Resistors
PWC 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
PWC Series Issue January 2009
Advanced Film Division • 4222 South Staples Street • Corpus Christi Texas 78411 USA
Telephone: 361 992 7900 • Facsimile: 361 992 3377 • Website: www.irctt.com
Physical Data
Pulse Withstanding
Chip Resistors
L
(mm)
W
(mm)
T max
(mm)
A
(mm)
B min
(mm)
C
(mm)
Weight
(grams)
0805 2.0±0.3 1.25±0.2 0.6 0.3±0.15 0.9 0.3±0.1 0.009
1206 3.2±0.4 1.6±0.2 0.7 0.4±0.2 1.7 0.4±0.15 0.020
2010 5.1±0.3 2.5±0.2 0.8 0.6±0.3 3.0 0.6±0.25 0.036
2512 6.5±0.3 3.2±0.2 0.8 0.6±0.3 4.4 0.6±0.25 0.055
A
T
W
C
L
Prefix PWC - PWC 2512LF - 100R - F
Chip Type
PWC
Chip Size and Termination
0805 = Sn/Pb solder termination
0805LF = 100% Tin (pb-free) termination
1206 = Sn/Pb solder termination
1206LF = 100% Tin (pb-free) termination
2010 = Sn/Pb solder termination
2010LF = 100% Tin (pb-free) termination
2512 = Sn/Pb solder termination
2512LF = 100% Tin (pb-free) termination
Resistance Value (Use IEC62 code)
Tolerance Code
J = ±5%; F = ±1%; D = ±0.5%
For additional information or to discuss your specific requirements,
please contact our Applications Team using the contact details below.
Ordering Data
Power Derating Data
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 tin-lead solder or matte-tin finish, ensuring 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 resistance to all normal industrial cleaning solvents suitable for printed circuits.