welwyn components general note welwyn components reserves the right to make changes in product specification without notice or liability. all information is subject to welwyns own data and is considered accurate at time of going to print. a subsidiary of tt electronics plc ? 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 pfc hi temp series issue june 2006 non-leaching nickel barrier wrap around termination ultra stable tantalum nitride resistor flm system high temperature tanfilm ? chip resistors pfc ht series ? available in industry standard 0603, 0805 and 1206 chip sizes ? gold and 100% tin (pb-free) terminations available ? self-passivating tanfilm ? element ? absolute tcr to 25ppm/c physical data l a w h b to p side bott om l w h a b w0603 1.600.1 0.79 0.1 0.51 0.1 0.300.13 0.380.13 w0805 2.060.13 1.270.13 0.510.1 0.410.20 0.410.20 w1206 3.200.15 1.600.13 0.610.1 0.640.25 0.640.25 electrical data model ohmic range absolute tcr rated power rated voltage (not to exceed rated power) temperature range termination substrate w0603ht 10 w to 10k w 100ppm/c 0.0625w 33.3v -55c to 200c gold and 100% tin (pb-free) 99.5% alumina 25 w to 10k w 50ppm/c 50 w to 10k w 25ppm/c w0805ht 10 w to 20k w 100ppm/c 0.100w 50v 25 w to 20k w 50ppm/c 50 w to 20k w 25ppm/c w1206ht 5 w to 85k w 100ppm/c 0.125w 100v 25 w to 85k w 50ppm/c 50 w to 85k w 25ppm/c
pfc hi temp series issue june 2006 welwyn components ? 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 high temperature tanfilm ? chip resistors rated power vs temperature data 100 50 50 100 150 200 t emperature in c % rated po we r performance data environmental test mil-prf-55342 performance typical maximum thermal shock 0.02% 0.10% short time overload 0.02% 0.05% high temperature exposure 0.03% 0.10% effects of solder 0.01% 0.10% moisture resistance 0.03% 0.10% life (1000 hours, 200c, no load ) 0.8% 1.0% life (1000 hours, 150c, rated power ) 0.2% 0.5% w1206 ht - 01 - 100r - f chip size w1206; w0805; w0603 termination ht = high temperature chip resistor with gold plated terminations htlf = high temperature chip resistor with 100% tin (pb-free) terminations tcr code 01 = 100ppm/c; 02 = 50ppm/c; 03 = 25ppm/c value (use iec62 code) tolerance (use iec62 code) j = 5%; g = 2%; f = 1% ordering data
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