10
Types NC 12 NC 20
IEC SIZE : 0805 IEC SIZE : 1206
Terminations Silver – palladium – platinum metallization
Marking On packaging only
Climatic category 40/125/56
Operating temperature -55°C to +150°C
Tolerance on Rn (25°C) ±5%, ±10%, ±20%
Maximum dissipation at 25°C 0.12 W 0.24 W
Thermal dissipation factor 2 mW/°C 4 mW/°C
Thermal time constant 5 s 7 s
NTC SMD Thermistors
NC 12 – NC 20
Chip thermistors are a high quality and low cost device espe-
cially developed for surface mounting applications. They are
widely used for temperature compensation but can also
achieve temperature control of printed circuits. Its silver -
palladium - platinum metallization provides a high degree of
resistance to dewetting of the terminations during soldering
(typically 260°C / 30 s).
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
2 (.079) ± 0.3 (.012)
1.25 (.049)
± 0.2 (.008)
0.5 (.020)
... 1.3 (.051)
0.2 (.008) min 0.2 (.008) min
3.2 (.126) ± 0.4 (.016)
0.2 (.008) min 0.2 (.008) min
1.6 (.063)
± 0.25 (.010)
0.5 (.020)
... 1.5 (.059)
Resistance - Temperature characteristics: pages 36 to 40.
HOW TO ORDER
NC 20
Type
K 0
Material Code
K
(See tables pages 11, 36-40)
0103
Resistance
10,000 Ω
M
Tolerance
M (±20%)
J (±5%)
K (±10%)
BA
Suffix: Packaging
– –: Bulk
BA: Plastic tape
(180mm diam. reel)
BE: Plastic tape (1/2 reel)
BC: Plastic tape
(330mm diam. reel)
BB: Cardboard tape
(180mm diam. reel)
BF: Cardboard tape (1/2 reel)
BD: Cardboard tape
(330mm diam. reel)
DIMENSIONS: millimeters (inches)
11
NTC SMD Thermistors
NC 12 – NC 20
NC 12
IEC SIZE : 0805
Types Rn at 25°C Material B (K) at 25°C
(Ω) Code (B/B )(%/°C)
NC 12 KC 0 180 18
NC 12 KC 0 220 22
NC 12 KC 0 270 27
NC 12 KC 0 330 33
NC 12 KC 0 390 39 KC 3470 ± 5% – 3.9
NC 12 KC 0 470 47
NC 12 KC 0 560 56
NC 12 KC 0 680 68
NC 12 KC 0 820 82
NC 12 KC 0 101 100
NC 12 MC 0 121 120
NC 12 MC 0 151 150
NC 12 MC 0 181 180
NC 12 MC 0 221 220
NC 12 MC 0 271 270
NC 12 MC 0 331 330
NC 12 MC 0 391 390
NC 12 MC 0 471 470
NC 12 MC 0 561 560 MC 3910 ± 3% – 4.4
NC 12 MC 0 681 680
NC 12 MC 0 821 820
NC 12 MC 0 102 1,000
NC 12 MC 0 122 1,200
NC 12 MC 0 152 1,500
NC 12 MC 0 182 1,800
NC 12 MC 0 222 2,200
NC 12 MC 0 272 2,700
NC 12 MC 0 332 3,300
NC 12 J 0 0332 3,300
NC 12 J 0 0392 3,900 J 3480 ± 3% – 3.9
NC 12 J 0 0472 4,700
NC 12 J 0 0562 5,600
NC 12 K 0 0682 6,800
NC 12 K 0 0822 8,200 K 3630 ± 3% – 4.0
NC 12 K 0 0103 10,000
NC 12 K 0 0123 12,000
NC 12 L 0 0153 15,000 L 3790 ± 3% – 4.2
NC 12 L 0 0183 18,000
NC 12 M 0 0223 22,000
NC 12 M 0 0273 27,000 M 3950 ± 3% – 4.4
NC 12 M 0 0333 33,000
NC 12 M 0 0393 39,000
NC 12 N 0 0473 47,000 N 4080 ± 3% – 4.6
NC 12 N 0 0563 56,000
NC 12 L 2 0683 68,000 L2 3805 ± 3% – 4.1
NC 12 N 0 0823 82,000 N 4080 ± 3% – 4.6
NC 12 P 0 0104 100,000
NC 12 P 0 0124 120,000 P 4220 ± 3% – 4.7
NC 12 P 0 0154 150,000
NC 12 P 0 0184 180,000
NC 12 Q 0 0224 220,000 Q 4300 ± 3% -4.7
NC 20
IEC SIZE : 1206
Types Rn at 25°C Material B (K) at 25°C
(Ω) Code (B/B )(%/°C)
NC 20 KC 0 100 10
NC 20 KC 0 120 12
NC 20 KC 0 150 15
NC 20 KC 0 180 18
NC 20 KC 0 220 22
NC 20 KC 0 270 27 KC 3470 ± 5% – 3.9
NC 20 KC 0 330 33
NC 20 KC 0 390 39
NC 20 KC 0 470 47
NC 20 KC 0 560 56
NC 20 KC 0 680 68
NC 20 KC 0 820 82
NC 20 KC 0 101 100
NC 20 MC 0 121 120
NC 20 MC 0 151 150
NC 20 MC 0 181 180
NC 20 MC 0 221 220
NC 20 MC 0 271 270
NC 20 MC 0 331 330
NC 20 MC 0 391 390 MC 3910 ± 3% – 4.4
NC 20 MC 0 471 470
NC 20 MC 0 561 560
NC 20 MC 0 681 680
NC 20 MC 0 821 820
NC 20 MC 0 102 1,000
NC 20 MC 0 122 1,200
NC 20 MC 0 152 1,500
NC 20 I 0 0182 1,800
NC 20 I 0 0222 2,200
NC 20 I 0 0272 2,700 I 3250 ± 5% – 3.7
NC 20 I 0 0332 3,300
NC 20 J 0 0392 3,900
NC 20 J 0 0472 4,700 J 3480 ± 3% – 3.9
NC 20 J 0 0562 5,600
NC 20 J 0 0682 6,800
NC 20 K 0 0822 8,200
NC 20 K 0 0103 10,000 K 3630 ± 3% – 4.0
NC 20 K 0 0123 12,000
NC 20 K 0 0153 15,000
NC 20 L 0 0183 18,000 L 3790 ± 3% – 4.2
NC 20 L 0 0223 22,000
NC 20 M 0 0273 27,000
NC 20 M 0 0333 33,000 M 3950 ± 3% – 4.4
NC 20 M 0 0393 39,000
NC 20 M 0 0473 47,000
NC 20 N 0 0563 56,000
NC 20 N 0 0683 68,000 N 4080 ± 3% – 4.6
NC 20 N 0 0823 82,000
NC 20 N 0 0104 100,000
NC 20 P 0 0124 120,000
NC 20 P 0 0154 150,000 P 4220 ± 3% – 4.7
NC 20 P 0 0184 180,000
NC 20 P 0 0224 220,000
NC 20 Q 0 0274 270,000
NC 20 Q 0 0334 330,000 Q 4300 ± 3% – 4.7
NC 20 Q 0 0394 390,000
NC 20 Q 0 0474 470,000
NC 20 R 0 0564 560,000
NC 20 R 0 0684 680,000 R 4400 ± 3% – 4.8
NC 20 R 0 0824 820,000
NC 20 R 0 0105 1,000,000
(1) ± 5%
(2) ± 3%
(1) ± 5%
(2) ± 3%
TABLE OF VALUES
