thermal sensors / circuit protectors technology of tomorrow 95 europe gmbh ?kaddenbusch 6 ?d-25578 d?geling / itzehoe ?phone: +49 (0) 48 21/89 89-0 ?fax: +49 (0) 48 21/89 89 89 ?interne t: www.koaeurope.de specifications given herein may be changed at any time without prior notice. please confirm technical specifications before you order and/or use. thermal sensors circuit protectors products with pb-free terminations meet rohs requirements thermal sensors linear ptc, thick film la 73 features resistance value changes in linear positive way to temperature quick response to the change of temperature anti-leaching nickel barrier terminations 15 specific temperature coefficients meets or exceeds iec 60115-8, jis c 5201-8 rated ambient temperature: + 70 c operating temperature range: - 55 c ... + 125 c suitable for reflow and wave soldering 1 ceramic substrate 2 top termination 3 bottom termination 4 thick film resistor element 5 protective layer 6 end termination 7 diffusion barrier (ni) 8 solder plating structure t.c.r.* (ppm/k) t.c.r. tolerance size type thermal dissipation constant max. working voltage resistance range ?e12 1e (0402) 1j (0603) 2a (0805) 2b (1206) resistance tolerance la73 1e, 1j no marking la73 2a, 2b orange black, 3 digits identification product code coating color marking dimensions (mm) rating temperature characteristics tcr and resistance range size l w c d t 0.1 0402 la73 1e 1.0 0.1 0.5 0.1 0.2 0.1 0.25 0.1 0.35 0603 la73 1j 1.6 0.2 0.8 0.1 0.3 0.1 0.3 0.1 0.45 0805 la73 2a 2.0 0.2 1.25 0.1 0.4 0.2 0.3 0.2 0.5 1206 la73 2b 3.2 0.2 1.6 0.2 0.5 0.3 0.4 0.2 0.6 type 600 1.2 k ? ~ 2.2 k ? 800 150 ppm/k 1.2 k ? ~ 2.2 k ? 1000 1 k ? ~ 10 k ? 1 k ? ~ 10 k ? 1 k ? ~ 10 k ? 1200 680 ? ~ 6.8 k ? 680 ? ~ 6.8 k ? 680 ? ~ 6.8 k ? 1400 200 ppm/k 470 ? ~ 4.7 k ? 470 ? ~ 4.7 k ? 470 ? ~ 4.7 k ? 1600 470 ? ~ 3.9 k ? 470 ? ~ 3.9 k ? 470 ? ~ 3.9 k ? 1800 330 ? ~ 2.7 k ? 330 ? ~ 2.7 k ? 330 ? ~ 2.7 k ? 2000 330 ? ~ 2.7 k ? 330 ? ~ 2.7 k ? 330 ? ~ 2.7 k ? j ( 5%) 2200 220 ? ~ 1.8 k ? 220 ? ~ 1.8 k ? 220 ? ~ 1.8 k ? 2400 220 ? ~ 1.2 k ? 220 ? ~ 1.2 k ? 220 ? ~ 1.2 k ? 2600 10% 100 ? ~ 1.2 k ? 100 ? ~ 1.2 k ? 100 ? ~ 1.2 k ? 2800 100 ? ~ 390 ? 100 ? ~ 390 ? 100 ? ~ 390 ? 3000 68 ? ~ 220 ? 68 ? ~ 220 ? 68 ? ~ 220 ? 3300 33 ? ~ 120 ? 33 ? ~ 120 ? 33 ? ~ 120 ? 3600 22 ? ~ 82 ? 22 ? ~ 82 ? 22 ? ~ 82 ? * t.c.r. measuring temperature + 25 c / + 75 c the resistance value of this resistor changes by its self-heating by power applied. therefore, it is recommended to take its se lf-heating into consideration. care must be taken that the resistors may be damaged by occurrence or application of the static electricity in equipment assemb ling processes. +0.2 ?.1 +0.2 ?.1 0402 la73 1e 0.016w 6.8 mw/k 10 v 0603 la73 1j 0.063w 7.6 mw/k 25 v 0805 la73 2a 0.1w 8.2 mw/k 50 v 1206 la73 2b 0.125w 9 mw/k 50 v resistance changing rate (%) temperature (?) type designation (how to order) *please see ?ackaging la73 product code 1e style 1e, 1j, 2a, 2b (1e only with termination ?? tp taping* tp, td, bk 1k2 nominal resistance 3 digits termination surface material t: sn l: sn/pb j resistance tolerance la73 1e tp 122 t j resistance tolerance j: ?% 600 t.c.r. (ppm/k) 0600 t.c.r. (ppm/k) 4 digits power* rating old part no. new part no. (pb-free) *for resistors operated at an ambient temperature of +70? or above, the power rating shall be derated.
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