general note irc reserves the right to make changes in product specification without notice or liability. all information is subject to ircs own data and is considered accurate at time of going to print. a subsidiary of ttelectronics 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 pwc series issue july 2008 electrical data ? 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 pulse withstanding chip resistors environmental data characteristic 0805 1206 2010 2512 resistance range 1%, 5% 0.5% 1.0 w to 10m w 10 w to 1m w power @ 70c 125mw 330mw 750mw 1.5w max voltage rating 150v 200v 400v 500v absolute tcr <10 w = 200ppm; 10 w = 100ppm/c operating temperature -55c to +155c thermal impedance 220c/w 160c/w 80c/w 50c/w pad/trace area 40mm 2* 50mm 2* 60mm 2* 100mm 2* termination wrap-around sn/pb or pb-free with leach resistant ni barrier test maximum 1 ? r typical ? r load life at rated power (1000 hours @ 70c) 1.00% 0.25% overload (6.25 x rated power for 5 seconds) 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% *recommended minimum pad and adjacent trace area for each termination for rated power on fr4 pcb. note 1 : 0.01 w added for all resistance values <10 w . pwc series
pwc series issue july 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 1.2/50 s lightning surg e 10 100 1000 10000 11 0 100 1000 10000 1000001 000000 1000000 0 resistance (ohms) peak voltage (volts) 0805 1206 2010 2512 10/700 s lightning surg e 10 100 1000 10000 11 01 00 1000 10000 10000 01 000000 1000000 0 resistance (ohms) peak voltage (volts) 2512 2010 1206 0805 pulse withstanding chip resistors lighting surge resistors are tested in accordance with ic 60 115-1 using both 1.2/50 m m
pwc series issue july 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 pulse voltag e 10 100 1000 10000 0.0001 0.00 10 .0 10 .1 1 pulse duration (seconds) pulse voltage (volts) 0805 1206 2010 2512 continuous pulses 0. 1 1 10 100 0.0001 0.00 10 .0 10 .1 1 pulse duration (seconds ) pulse power (watts) 0805 1206 2010 2512 single puls e 1 10 100 1000 0.0001 0.00 10 .0 10 .1 1 pulse duration (seconds) pulse power (watts) 0805 1206 2010 2512 single impulse: the single impulse graph is the result o 50 impulses o rectangular shape applied at one minute intervals. the limit o acceptance was a shit in resistance o less than 1% rom the initial value. the power applied was subect to the restrictions o 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 adusted so that the average power dissipated in the resistor was eual to its rated power at 70c. again the limit o acceptance was a shit in resistance o less than 1% rom the initial value. pulse withstanding chip resistors pulse perormance data
pwc series issue july 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 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 prefx 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, ordering data 25 70 155 100 50 10 % of rated p o we r te mperature in c power derating data construction: thick flm 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 fnish, 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.
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