trimmable surface mount resistors crt series 40% adjustment available wrap around terminations inner electrode protection general note welwyn components reserves the right to make changes in product specification without notice or liability. all information is subject to welwyn s own data and is considered accurate at time of going to print. ?welwyn components limited ?bedlington, northumberland ne22 7aa, uk telephone: +44 (0) 1670 822181 ?facsimile: +44 (0) 1670 829465 ?email: info@welwyn-tt.com ?website: www.welwyn-tt.com electrical data physical data issue b ?03.02 a subsidiary of tt electronics plc welwyn components 35 dimensions (mm) & weight (g) type l w a t +0.2 +0.2 +0.15 CRT0805 2.0 1.25 0.4?.2 0.50 -0.1 -0.1 -0.05 +0.1 +0.1 -0.15 crt1206 3.2 1.6 0.5?.2 0.55 -0.15 -0.15 -0.05 +0.10 +0.1 +0.15 crt1210 3.2 2.6 0.5?.2 0.55 -0.15 -0.15 -0.05 construction the chips have a high alumina substrate (96% minimum) with ruthenium oxide resistance element and silver palladium, nickel and solder plated terminations. a glass dielectric coat is applied to the resistive element. terminations solderability the terminations meet the requirements of iec 115-1, clause 4.17.3.2. marking all relevant information recorded on the reel. solvent resistance the chips are resistant to all normal industrial cleaning fluids suitable for printed circuits. commercial CRT0805 crt1206 crt1210 power rating at 70? watts 0.1 0.125 0.25 resistance range ohms 10r to 1m 10r to 1m 10r to 1m limiting element voltage volts 100 200 200 tcr -55 to 125? ppm/? 250 *resistance tolerance at 20? % 20 standard values e24 ambient temperature range ? -55 to 125 *tolerance +0-30% is available. t w a a l wrap-around terminations (3 faces)
trimmable surface mount resistors crt series ? welwyn components limited bedlington, northumberland ne22 7aa, uk telephone: +44 (0) 1670 822181 ?facsimile: +44 (0) 1670 829465 ?email: info@welwyn-tt.com ?website: www.welwyn-tt.com maximum typical load at rated power: 1000 hours at 70? ? r% 3 0.4 derate linearly to zero from 70? zero at 125? short term overload (6.25 x rated power) ? r% 2.5 0.4 long term damp heat ? r% 3 0.5 temperature rapid change ? r% 1 0.1 resistance to solder heat ? r% 2.5 0.2 issue b ?03.02
36 performance data packaging parts supplied tape and reel 5000 pieces per 7?reel as per iec 286-3.
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