NTC SMD Thermistors With Nickel Barrier Termination NB 21 - NB 23 Chip thermistors are high quality and low cost devices A nickel barrier metallization provides outstanding qualities of especially developed for surface mounting applications. They solderability and enables this chip to meet the requirements are widely used for temperature compensation but can also of the most severe soldering processes. achieve temperature control of printed circuits. NB 21 NB 23 Types IEC SIZE : 0603 IEC SIZE : 0402 1.0 0.1 (0.04 0.004) 1.6 (.063) 0.2 (.008) 0.40 0.1 0.8 (.031) DIMENSIONS: (0.02 0.004) 0.2 (.008) millimeters (inches) 0.8 (.031) 0.60 (0.024) max 0.2 (.008) 0.2 (.008) min 0.2 (.008) min 0.25 (0.10) min 0.25 (0.10) min Terminations Nickel Barrier Marking On packaging only Climatic category 40/125/56 Operating temperature -55C to +150C Tolerance on Rn (25C) 5%, 10%, 20% Maximum dissipation at 25C 0.07 W 0.06 W Thermal dissipation factor 1 mW/C 0.8 mW/C Thermal time constant 4 s 3 s Resistance - Temperature characteristics: pages 36 to 40. 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 HOW TO ORDER NB 21 K 0 0103 M BB Type Material Code Resistance Tolerance Suffix: Packaging K 10,000 M (20%) : Bulk (See tables page 15) J (5%) BB: Cardboard tape K (10%) (180mm diam. reel) BF: Cardboard tape (1/2 reel) BD: Cardboard tape (330mm diam. reel) 14NTC SMD Thermistors With Nickel Barrier Termination NB 21 - NB 23 TABLE OF VALUES NB 23 NB 21 IEC SIZE : 0402 IEC SIZE : 0603 B (K) B (K) Rn at 25C Material at 25C Rn at 25C Material at 25C Types Types (1) 5% (1) 5% ( ) Code (%/C) ( ) Code (%/C) ( B/B ) ( B/B ) (2) 3% (2) 3% NB 23 NC 0 103 10,000 NC 4080 3% 4.6 NB 21 KC 0 470 47 NB 21 KC 0 101 100 KC 3470 5% 3.9 NB 23 RC 0 103 10,000 RC 4340 3% 4.7 NB 21 KC 0 471 470 NB 23 NC 0 153 15,000 NC 4080 3% 4.6 NB 21 MC 0 102 1,000 MC 3910 3% 4.4 NB 23 NC 0 223 22,000 NB 21 J 0 0472 4,700 J 3480 3% 3.9 NB 23 RC 0 223 22,000 RC 4340 3% 4.7 NB 23 RC 0 333 33,000 NB 21 J 5 0682 6,800 3480 3% 3.9 J5 NB 21 J 5 0103 10,000 3480 3% 3.9 NB 23 NE 0 473 47,000 NE 4100 3% 4.6 NB 21 K 0 0103 10,000 NB 23 RC 0 473 47,000 K 3630 3% 4.0 NB 21 K 0 0153 15,000 NB 23 RC 0 683 68,000 RC 4340 3% 4.7 NB 23 RC 0 104 100,000 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 15