4 4-13 model BCN31 ladder model BCN31 r/2r ladder network 8 bit, 2512 size thick film leadless chip packages ?termination network in analog to digital and digital to analog conversion circuits features ?8 bit ladder network in a 10 terminal leadless chip package ?convex termination with square edges and corners ?topside marking for easy identi?ation ?solder plated termination with nickel barrier benefits saves board space ?reduces cost ?single component reliability ?leadless package offers improved performance speci?ations subject to change without notice. applications standard resistance range, ohms 1k to 100k standard resistance tolerance ?% operating temperature range -40? to +125? temperature coef?ient of resistance ?00ppm/? operating voltage, maximum 50vdc or pr insulation resistance 100 megohms power rating, watts at 70? 25mw per resistor / 400mw per package ladder network accuracy 8 bits: ?/2lsb electrical
4-14 model BCN31 ladder environmental moisture resistance 1,000 hours at +40?, 95% r.h. (3.0% ? r) high temperature operation 1,000 hours at 70? (3.0% ? r) short time overload 2.5 x rated voltage, 5 seconds (2.0% ? r) temperature cycling -55? to +125?, 5 cycles (1.0% ? r) resistance to solder heat 260? for 10 seconds (1.0% ? r) load life 1,000 hours at 70? (3.0% ? r) schematic (inch/mm) r 109876 12345 2r 2r 2r 2r 2r 2r 2r 2r 2r rr r r r r solder pad layout (inch/mm) pabcxy abcxy wave solder process re-flow solder process c p y y a x x b .050 1.27 .084 2.10 .148 3.70 .014 0.35 .036 0.90 .032 0.80 .084 2.10 .148 3.70 .014 0.35 .036 0.90 .032 0.80
4 4-15 model BCN31 ladder outline dimensions (inch/mm) solder termination .252 .008 6.4 0.20 .122 .008 3.10 0.20 .050 .002 1.27 .051 .032 .004 0.80 0.10 .012 .006 0.30 0.15 .012 .004 0.30 0.10 .022 .004 0.55 .10 l 253 power derating curve 100 80 60 40 20 0 -55 0 70 125 percent of rated power ambient temperature ( c) value (r1/r2) 1k/2k 10k/20k 25k/50k 50k/100k 100k/200k code 102 103 253 503 104 standard resistance values, ohms
4-16 model bcn 31 ladder ordering information bcn 31 ab l xxx g 7 model series width: 31 = 3.1mm edge option: ab = square edge, convex termination circuit type: l = ladder packaging option: 7 = 7" tape & reel, 4k/reel 13 = 13" tape & reel, 16k/reel tolerance: g = 2% resistance code: 102 = 1k / 2k 103 = 10k / 20k 253 = 25k / 50k 503 = 50k / 100k 104 = 100k / 200k
|
