NTC THERMISTORS: TYPE NHQ SURFACE MOUNT CHIP 1206 SIZE DESCRIPTION: DIMENSIONS: A range of 1206 size surface mount NTC chip thermistors. FEATURES: 0.5 0.3mm 1.6 0.2mm * Palladium silver electrodes with nickel barrier and solder plating * Intended for temperature measurement, control and compensation * Excellent solderabilty without `tombstoning' * Suitable for standard soldering techniques * Glass-coated ceramic between electrodes for improved stability * Supplied in tape-and-reel packaging DATA: Soldering Recommendations: Maximum storage time in closed package....1 year Maximum storage time exposed to ambient conditions of I5C - 30C, 15% - 70% RH ...30 days Drying prior to soldering: not to exceed 48h at 80C ............................................ or 16h at 100C .............................................. or 8h at 125C Flux type .......................................... R or RMA Flow soldering conditions: Preheat temperature .................... 80 - 150C Max rate of change of temperature ....... 2.5C/s Max solder temperature ......................... 265C Max dwell time ........................................ 10s Cooling in ambient or air flow of ............... 5m/s Reflow soldering conditions: Method ........................ infrared, hot gas, vapor Max rate of change preheat temperature . 2.5C/s Max Temp ............................................ 225C Max time above 200C ............................. 30s Max radiant flux (0. 1 to 100W ) ........ 5W/cm2 Max hot air temperature ........... 275C at 4 m/s Cleaning: Ultrasonic cleaning in methanol or isopropanol not exceeding 40 kHz for 5 minutes or aqueous cleaning not exceeding 70C for 7 minutes, is recommended Resistance tolerance at 25C .................. 5% ........... (for 10% replace R5 by R10 in code) Tolerance on B value .......................... 200 K Minimum temperature ............................ -40C Maximum temperature .......................... 125C Dissipation factor ................................ 3mW/K Time constant ..................................... 8s max 3.2 0.2mm 1.2mm max Code NHQ101B280R5 NHQ501B325R5 NHQ801B325R5 NHQ102B325R5 NHQ152B345R5 NHQ202B410R5 NHQ222B410R5 NHQ252B410R5 NHQB410272R5 NHQ302B410R5 NHQ472B355R5 NHQ502B355R5 NHQ103B375R5 NHQ153B400R5 NHQ203B400R5 NHQ223B400R5 NHQ303B400R5 NHQ333B400R5 NHQ473B400R5 NHQ503B400R5 NHQ104B425R5 NHQ154B425R5 NHQ304B435R5 NHQ474B435R5 NHQ504B435R5 R25 100 500 800 1000 1500 2000 2200 2500 2700 3000 4700 5000 10000 15000 20000 22000 30000 33000 47000 50000 100000 150000 300000 470000 500000 B 25/85 K 2800 3250 3250 3250 3450 4100 4100 4100 4100 4100 3550 3550 3750 4000 4000 4000 4000 4000 4000 4000 4250 4250 4350 4350 4350 Data sheet D-NHQ-4 BOWTHORPE THERMOMETRICS Crown Industrial Estate, Priorswood Rd Taunton, Somerset TA2 8QY UK Tel +44 (0)1823 335200 Fax +44 (0)1823 332637 Email: info@thermometrics.com THERMOMETRICS, INC. 808 US Highway 1 Edison, New Jersey 08817-4695 USA Tel +1 (732) 287 2870 Fax +1 (732) 287 8847 Email: sales@thmusa.com KEYSTONE THERMOMETRICS CORP 967 Windfall Road St Marys, Pennsylvania 15857-3397 USA Tel +1 (814) 834 9140 Fax +1 (814) 781 7969 Email: sales@keystone-usa.com DAEWOO THERMOMETRICS #302 3rd floor Bethel Bldg, 324-1 Yangjae-dong, Seocho-Ku, Seoul, Korea Tel +82 (0)2 5765232, 5233 Fax +82 (0)2 576 5234 Email: thmkorea@bora.dacom.co.kr