14 ntc smd thermistors with nickel barrier termination nb 21 - nb 23 types nb 21 nb 23 iec size : 0603 iec size : 0402 terminations nickel barrier marking on packaging only climatic category 40/125/56 operating temperature -55? to +150? tolerance on rn (25?) 5%, ?0%, ?0% maximum dissipation at 25? 0.07 w 0.06 w thermal dissipation factor 1 mw/? 0.8 mw/? thermal time constant 4 s 3 s chip thermistors are high quality and low cost devices especially developed for surface mounting applications. they are widely used for temperature compensation but can also achieve temperature control of printed circuits. a nickel barrier metallization provides outstanding qualities of solderability and enables this chip to meet the requirements of the most severe soldering processes. applications ?lcd compensation ?battery packs ?mobile phones ?cd players ?heating systems ?air-conditioning systems ?temperature control of switch mode power supplies ?compensation of pressure sensors ?protection of power transistors in various electronic circuits 1.6 (.063) 0.2 (.008) 0.8 (.031) 0.2 (.008) 0.8 (.031) 0.2 (.008) 0.2 (.008) min 0.2 (.008) min 1.0 0.1 (0.04 0.004) 0.40 0.1 (0.02 0.004) 0.60 (0.024) max 0.25 (0.10) min 0.25 (0.10) min resistance - temperature characteristics: pages 36 to 40. how to order nb 21 type k 0 material code k (see tables page 15) 0103 resistance 10,000 ? m tolerance m (?0%) j (?%) k (?0%) bb suffix: packaging ?? bulk bb: cardboard tape (180mm diam. reel) bf: cardboard tape (1/2 reel) bd: cardboard tape (330mm diam. reel) dimensions: millimeters (inches)
15 ntc smd thermistors with nickel barrier termination nb 21 - nb 23 table of values nb 21 iec size : 0603 types rn at 25? material b (k) at 25? ( ? ) code ( b/b ) (%/?) nb 21 kc 0 470 47 nb 21 kc 0 101 100 kc 3470 5% 3.9 nb 21 kc 0 471 470 nb 21 mc 0 102 1,000 mc 3910 3% 4.4 nb 21 j 0 0472 4,700 j 3480 3% 3.9 nb 21 j 5 0682 6,800 j5 3480 3% 3.9 nb 21 j 5 0103 10,000 3480 3% 3.9 nb 21 k 0 0103 10,000 k 3630 3% 4.0 nb 21 k 0 0153 15,000 nb 21 l 0 0223 22,000 l 3790 3% 4.2 nb 21 m 0 0333 33,000 m 3950 3% 4.4 nb 21 m 0 0473 47,000 nb 21 l 2 0683 68,000 l2 3805 3% 4.1 nb 21 n 0 0683 68,000 n 4080 3% 4.6 nb 21 n 5 0104 100,000 n5 4160 3% 4.7 nb 21 p 0 0154 150,000 p 4220 3% 4.7 nb 21 q 0 0334 330,000 q 4300 3% 4.7 nb 21 q 0 0474 470,000 (1) 5% (2) 3% nb 23 iec size : 0402 types rn at 25? material b (k) at 25? ( ? ) code ( b/b ) (%/?) nb 23 nc 0 103 10,000 nc 4080 3% 4.6 nb 23 rc 0 103 10,000 rc 4340 3% 4.7 nb 23 nc 0 153 15,000 nc 4080 3% 4.6 nb 23 nc 0 223 22,000 nb 23 rc 0 223 22,000 rc 4340 3% 4.7 nb 23 rc 0 333 33,000 nb 23 ne 0 473 47,000 ne 4100 3% 4.6 nb 23 rc 0 473 47,000 nb 23 rc 0 683 68,000 rc 4340 3% 4.7 nb 23 rc 0 104 100,000 (1) 5% (2) 3%
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