48 05/02 smd ntc thermistors with nickel barrier termination temperature measurement applications temperature measurement and compensation in mobile phone applications (e.g. battery pack, tcxo, lcd) data systems automotive electronics features multilayer smd ntc with inner electrodes ni barrier termination (ag/ni/sn) high accuracy: 5 % in resistance, b value tolerance down to 1,5 % available on request excellent long-term ageing stability in high-temperature and high-humidity environment superior resistance stability during soldering (change < 1 %) options alternative resistance ratings, resistance tol. < 5 % and b value tol. < 3 % available on request delivery mode cardboard tape, 180-mm reel, pu: 10000 pcs climatic category (iec 60068-1) max. power at 25 c (on pcb) p 25 1) resistance tolerance ? r n / r n rated temperature t n b value tolerance ? b / b dissipation factor (on pcb) th 1) thermal cooling time constant (on pcb) c 1) heat capacity c th 1) 55/125/56 150 5 %, 10 % 25 3 % approx. 2,5 approx. 3,0 approx. 7,5 mw c mw/k s mj/k r 25 ? no. of r / t characteristic b 25/50 k b 25/85 k b 25/100 k ordering code 100 8501 3470 3540 3550 b57211v2101+060 150 8501 3470 3540 3550 b57211v2151+060 220 8501 3470 3540 3550 b57211v2221+060 330 8501 3470 3540 3550 b57211v2331+060 470 8501 3470 3540 3550 b57211v2471+060 1,0 k 8502 3940 3980 4000 B57221v2102+060 1,5 k 8502 3940 3980 4000 B57221v2152+060 2,2 k 8502 3940 3980 4000 B57221v2222+060 3,3 k 8502 3940 3980 4000 B57221v2332+060 4,7 k 8502 3940 3980 4000 B57221v2472+060 10 k 8502 3940 3980 4000 B57221v2103+060 dimensions in mm approx. weight 4,5 mg termination 0,250,15 0,50,05 1,00,1 tnt0395-q 0,6 max. 1) depends on mounting situation b572** v2** smd ntc thermistors with nickel barrier termination, size 0402
49 05/02 +: j for ? r n / r n = 5 % kfor ? r n / r n = 10 % 10 k 8503 4390 4470 4500 b57231v2103+060 15 k 8503 4390 4470 4500 b57231v2153+060 22 k 8503 4390 4470 4500 b57231v2223+060 33 k 8503 4390 4470 4500 b57231v2333+060 47 k 8503 4390 4470 4500 b57231v2473+060 reliability data smd ntc thermistors are tested in accordance with iec 60068. the parts are mounted on a standardized pcb in accordance with iec 60539-1. test standard test conditions ? r 25 / r 25 (typical) remarks storage in dry heat iec 60068-2-2 jis c 0021 storage at upper category temperature t : (125 2) c t : 1000 h < 2 % storage in damp heat, steady state iec 60068-2-3 jis c 0022 temperature of air: (40 2) c relative humidity of air: (93 +2/ 3) % duration: 56 days < 2 % rapid temperature cycling iec 60068-2-14 jis c 0025 lower test temperature: 55 c upper test temperature: 125 c number of cycles: 100 < 2 % endurance p max : 150 mw t : (65 2) c t : 1000 h < 2 % solderability iec 60068-2-58 jis c 0054 solderability: (215 3) c / (3 0,3) s (235 5) c / (2 0,2) s resistance to soldering heat: (260 5) c / (10 1) s 95 % of terminations wetted resistance drift after soldering reflow soldering profile < 1 % r 25 ? no. of r / t characteristic b 25/50 k b 25/85 k b 25/100 k ordering code b572** temperature measurement v2** smd ntc thermistors with nickel barrier termination, size 0402
herausgegeben von epcos ag unternehmenskommunikation, postfach 80 17 09, 81617 mnchen, deutschland ++49 89 636 09, fax (0 89) 636-2 26 89 ? epcos ag 2002. vervielf?ltigung, ver?ffentlichung, verbreitung und verwertung dieser broschre und ihres inhalts ohne aus- drckliche genehmigung der epcos ag nicht gestattet. bestellungen unterliegen den vom zvei empfohlenen allgemeinen lieferbedingungen fr erzeugnisse und leistungen der elek- troindustrie, soweit nichts anderes vereinbart wird. diese broschre ersetzt die vorige ausgabe. fragen ber technik, preise und lieferm?glichkeiten rich ten sie bitte an den ihnen n?chstgelegenen vertrieb der epcos ag oder an unsere vertriebsgesellschaften im ausland. bauelemente k?nnen aufgrund technischer erfordernisse gefahrstoffe ent- halten. ausknfte darber bitten wir unter angabe des betreffenden typs ebenfalls ber die zust?ndige vertriebsgesellschaft ein - zuholen. published by epcos ag corporate communications, p.o. box 80 17 09, 81617 munich, germany ++49 89 636 09, fax (0 89) 636-2 26 89 ? epcos ag 2002. reproduction, publication and dissemination of this brochure and the information contained therein without epcos? prior express consent is prohibited. purchase orders are subject to the general conditions for the s upply of products and services of the electrical and electronics industry recommended by the zvei (german electrical and el ectronic manufacturers? associ ation), unless otherwise agreed. this brochure replaces the previous edition. for questions on technology, prices and delivery please contact the sales offices of epcos ag or the international representa- tives. due to technical requirements components may contain dangerous substances. for information on the type in question please also contact one of our sales offices.
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