Pulse Withstanding Chip Resistors Pulse Withstanding PWC Series Chip Resistors * Higher power ratings * Improved working voltage ratings * Excellent pulse withstanding performance PWC Seriesor Pb-free wrap-around terminations * Sn/Pb s* Higher power ratings Standard chip sizes available from 0805 to 2512 s s s s Improved working voltage ratings Excellent pulse withstanding performance Sn/Pb or Pb-free wrap-around terminations Standard chip sizes available from 0805 to 2512 Electrical Data Size Resistance range 1206 0805 Power @70C W 0.125 0.33 Ohms Tolerance % LEV V TCR ppm/C Operating temperature 2010 0.5 2512 0.75 1 1.5 2 1R0 to 10M 10R to 1M: 0.5, All values: 1, 5 150 200 400 500 <10R:200 10R:100 C -55 to +155 Thermal Impedance C/W 220 160 145 80 70 55 40 Pad / trace area * mm2 40 50 125 60 250 100 500 Values E96 preferred - other values to special order See graphs - full application note available on request Pulse Capability *Recommended minimum pad & adjacent trace area for each termination for rated power dissipation on FR4 PCB Environmental Data Maximum1 R Typical R Load life at rated power (1000 hours @ 70C) 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 @ 155C) 1.00% 0.20% Moisture resistance 1.00% 0.25% Thermal shock 0.25% 0.05% Resistance to soldering heat 0.25% 0.05% Test Note BEEFEGPSBMMSFTJTUBODFWBMVFT . General Note IRC reserves the right to make changes in product specification without notice or liability. General Note All information is subject to IRC's own data and is considered accurate at time of going to print. TT electronics reserves the right to make changes in product specification without notice or liability. Advanced Film Divisiont4PVUI4UBQMFT4USFFUt$PSQVT$ISJTUJTFYBT64" All information is subject to TT electronics' own data and is considered accurate at time of going to print. TFMFQIPOFtFBDTJNJMFtWebsite: www.irctt.com A subsidiary of TTelectronics plc 18$4FSJFT*TTVF+BOVBSZ www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11 Pulse Withstanding Chip PWC SeriesResistors Pulse Withstanding Chip Resistors Pulse Performance Data 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. 1.2/50 S Lightning Surge 10000 Peak voltage (volts) 2512 2010 1206 0805 1000 100 10 1 10 100 1000 10000 100000 1000000 10000000 Resistance (ohms) 10/700 S Lightning Surge 10000 2512 Peak Voltage (volts) 2010 1000 1206 0805 100 10 1 10 100 1000 10000 100000 1000000 10000000 Resistance (ohms) Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com PWC Series Issue January 2009 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11 Pulse Withstanding Chip Resistors Pulse Withstanding PWC Series Chip Resistors Single Pulse Pulse Performance Data 1000 100 Pulse Power (watts) 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. 10 2512 2010 1206 1 0.0001 0.001 0.01 0.1 1 0805 Pulse duration (seconds) Continuous Pulses 100 Pulse Power (watts) 2512 2010 1 1206 0805 0.1 0.0001 0.001 0.01 0.1 1 Pulse Duration (seconds) Pulse Voltage 10000 Pulse Voltage (Volts) 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 70C. Again the limit of acceptance was a shift in resistance of less than 1% from the initial value. 10 1000 2512 2010 1206 0805 100 10 0.0001 0.001 0.01 0.1 1 Pulse Duration (seconds) Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com PWC Series Issue January 2009 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11 Pulse Withstanding PWC SeriesResistors Chip Pulse Withstanding Chip Resistors Physical Data L (mm) W (mm) T max (mm) A (mm) B min (mm) C (mm) Weight (grams) 0805 2.00.3 1.250.2 0.6 0.30.15 0.9 0.30.1 0.009 1206 3.20.4 1.60.2 0.7 0.40.2 1.7 0.40.15 0.020 2010 5.10.3 2.50.2 0.8 0.60.3 3.0 0.60.25 0.036 2512 6.50.3 3.20.2 0.8 0.60.3 4.4 0.60.25 0.055 L W C T A 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. Power Derating Data Ordering Data Prefix % Of Rated P ower 100 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 50 10 25 70 155 Temperature in C 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. Advanced Film Division * 4222 South Staples Street * Corpus Christi Texas 78411 USA Telephone: 361 992 7900 * Facsimile: 361 992 3377 * Website: www.irctt.com PWC Series Issue January 2009 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. www.bitechnologies.com www.irctt.com www.welwyn-tt.com (c) TT electronics plc 10. 11