anti sulphur chip resistors asc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc 07. 12 special construction resists sulphide growth withstands sulphur bearing fume environment tested to astm-b809 (flowers-of-sulphur) suitable for industrial, automotive and roadside uses rohs compliant matt tin fnish terminations dimensions (mm) and weight (mg) l w t c a wt. nom. 0402 1.0 0.05 0.5 0.05 0.35 0.05 0.2 0.1 0.2 0.1 0.62 0603 1.6 0.1 0.8 0.1 0.45 0.1 0.3 0.2 0.3 0.2 2.04 0805 2.0 0.1 1.25 0.1 0.5 0.1 0.35 0.2 0.4 0.2 4.37 1206 3.1 0.1 1.55 0.1 0.55 0.1 0.5 0.25 0.5 0.2 8.95 1210 3.2 0.2 2.6 0.15 16.0 2010 5.0 0.2 2.5 0.15 0.6 0.25 24.2 2512 6.35 0.2 3.2 0.15 39.4 0402 0603 0805 1206 1210 2010 2512 power rating @ 70oc watts 0.063 0.1 0.125 0.25 0.33 0.75 1 resistance range ohms 1r0 - 10m current rating (zero ohm jumper) amps 1 1 2 2 2.5 3.5 4 limiting element voltage volts 50 150 200 250 tcr ppm/oc <10r: 200 10r to 1m0: 100 >1m0: 200 resistance tolerance % 1 standard values e24, e96 ambient temperature range oc -55 to +155 construction conductors, resistive element, glass inner protection and epoxy outer protection are applied to a 96% alumina substrate. the chips are supplied with wrap-around terminations suitable for soldering. the terminations have an electroplated nickel barrier and 100% matt tin fnish. marking sizes larger than 0603 are individually marked with 4 digits. the frst three digits are the signifcant fgures and the fourth defnes the number of added zeros. size 0603, e24 values are marked with 3 digits. the frst two digits are the signifcant fgures and the third defnes the number of added zeros. size 0603, e96 values are marked with a standard 3 digit eia96 code. size 0402 has no marking. the body protection and marking are resistant to all normal cleaning solvents suitable for printed circuits. electrical data physical data t w a a l wr ap-around terminations (3 faces)
ordering procedure example: asc1210 at 22 ohms and 1% tolerance on a reel of 5000 pieces - anti sulphur chip resistors asc series www.bitechnologies.com www.irctt.com www.welwyn-tt.com general note tt electronics reserves the right to make changes in product specifcation without notice or liability. all information is subject to tt electronics own data and is considered accurate at time of going to print. ? tt electronics plc 07. 12 maximum load at rated power: 1000 hours cyclic load @ 70c r% 2% + 0.1 short term overload: lesser of 6.25 x rated power or 2 x lev for s r% 1% + 0.05 hydrogen sulphide: 1000 hours 3-5ppm h2s, 50 2c, 92 1% rh, no load r% 0.5% and no visual defects derating from rated power at 70c linear to zero at 155c dry heat: 1000 hours at 155c r% 1% + 0.05 damp heat 1000 hours 40c 90-95% rh r% 2% + 0.1 temperature rapid change -55 to 155c, 5 cycles r% 0.5% + 0.05 resistance to solder heat: 2605c for 10s r% 0.5% + 0.05 solderability: 2455c for 3s 95% coverage solder leaching: 2605c for 30s leached area 10% total, 5% individual board flex: once for 5s, 2010 & 2512: 2mm, smaller sizes: 3mm r% 1% +0.05 insulation resistance @ 2 x lev for 60s ohms >10g performance data packaging asc resistors are supplied taped and reeled on a 7 or 10 reel as per iec 286-3. the tape is 12mm wide embossed plastic tape for 2010 and 2512 sizes and 8mm wide paper tape for the smaller sizes. type a s c 1 2 1 0 - 2 2 r f t5 size value (use iec62 code) tolerance (use iec62 code) packing t10 tape 0402 10,000/reel (7) standard t5 0603, 0805, 1206, 1210 5000/reel (10) t4 2010, 2512 4000/reel (7) f 1% note: for zero ohm jumper, substitute value and tolerance with the code r000
|
