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NB21PC0472JBB

P1-P3P4-P6P7-P9
4
STORAGE
Good solderability is maintained for at least twelve months,
provided the components are stored in their “as received”
packaging at less than 40°C and 70% RH.
SOLDERABILITY / LEACHING
Terminations to be well soldered after immersion in a 60/40
tin/lead solder bath at 235 ± 5°C for 2 ± 1 seconds.
Terminations will resist leaching for at least the immersion
times and conditions recommendations shown below.
NB products are compatible with a wide range of soldering
conditions consistent with good manufacturing practice for
surface mount components. This includes Pb free reflow
processes with peak temperatures up to 270ºC.
Recommended profiles for reflow and wave soldering are
shown below for reference.
NC products are recommended for lead soldering application
or gluing techniques.
Surface Mounting Guide
Chip Thermistor – Application Notes
REFLOW SOLDERING
WAVE SOLDERING
P/N Termination Solder Solder Immersion
Type Tin/Lead Temp ºC Time Seconds
NC AgPdPt 60/40 260 ± 5 15 max
NB Nickel Barrier 60/40 260 ± 5 30 ± 1
Case
P/ND1D2D3D4D5
Size
0402 NB23
1.70 0.60 0.50 0.60 0.50
(.067) (.024) (.020) (.024) (.020)
0603 NB21
2.30 0.80 0.70 0.80 0.75
(.091) (.031) (.028) (0.31) (.030)
0805 NB12
3.00 1.00 1.00 1.00 1.25
(.118) (.039) (.039) (.039) (.049)
1206 NB20
4.00 1.00 2.00 1.00 2.50
(.157) (.039) (.079) (.039) (.098)
Case
P/ND1D2D3D4D5
Size
0603 NB21
3.10 1.20 0.70 1.20 0.75
(.122) (.047) (.028) (.047) (.030)
0805 NB12
4.00 1.50 1.00 1.50 1.25
(.157) (.059) (.039) (.059) (.049)
1206 NB20
5.00 1.50 2.00 1.50 1.60
(.197) (.059) (.079) (.059) (.063)
Reflow
300
250
200
150
100
50
0
Solder Temp.
10 sec. max
1min
1min
(Minimize soldering time)
Natural
Cooling
220ºC
to
250ºC
Preheat
a) The visual standards used for evaluation of solder joints
will need to be modified as lead free joints are not as bright
as with tin-lead pastes and the fillet may not be as large.
b) Resin color may darken slightly due to the increase in
temperature required for the new pastes.
c) Lead-free solder pastes do not allow the same self align-
ment as lead containing systems. Standard mounting
pads are acceptable, but machine set up may need to be
modified.
300
250
200
150
100
50
0
0 50 100 150 200 250 300
• Pre-heating: 150°C ±15°C / 60-90s
• Max. Peak Gradient: 2.5°C/s
• Peak Temperature: 245°C ±5°C
• Time at >230°C: 40s Max.
Temperature °C
Time (s)
Wave
300
250
200
150
100
50
0
Solder Temp.
3 sec. max
1 to 2 min
(Preheat chips before soldering)
T/maximum 150°C
Preheat
Natural
Cooling
230ºC
to
250ºC
T
D1
D2
D3
D4
D5
RECOMMENDED
SOLDERING PAD
LAYOUT
Dimensions in
mm (inches)
5
010617
Tables of Resistance vs Temperature
T
Material B(K)
(°C)
I 3250
R(T) / R25 TF (%) α (%/°C)
-55 42.35 21.9 -5.98
-50 31.48 20.0 -5.78
-45 23.63 18.1 -5.59
-40 17.91 16.3 -5.41
-35 13.70 14.6 -5.23
-30 10.58 13.1 -5.06
-25 8.232 11.6 -4.90
-20 6.460 10.1 -4.74
-15 5.110 8.8 -4.59
-10 4.072 7.5 -4.45
-5 3.268 6.3 -4.31
0 2.641 5.1 -4.18
5 2.148 4.0 -4.05
10 1.759 2.9 -3.92
15 1.449 1.9 -3.81
20 1.200 0.9 -3.69
25 1.000 0.0 -3.58
30 0.8377 0.9 -3.48
35 0.7054 1.8 -3.38
40 0.5969 2.6 -3.28
45 0.5076 3.5 -3.19
50 0.4336 4.3 -3.10
55 0.3720 5.1 -3.01
60 0.3206 5.9 -2.93
65 0.2774 6.6 -2.85
70 0.2410 7.4 -2.77
75 0.2102 8.1 -2.70
80 0.1839 8.8 -2.63
85 0.1616 9.5 -2.56
90 0.1424 10.2 -2.49
95 0.1259 10.9 -2.43
100 0.1117 11.5 -2.36
105 0.09938 12.2 -2.30
110 0.08869 12.8 -2.25
115 0.07938 13.4 -2.19
120 0.07124 14.0 -2.14
125 0.06410 14.6 -2.08
130 0.05783 15.2 -2.03
135 0.05230 15.7 -1.98
140 0.04741 16.3 -1.94
145 0.04308 16.8 -1.89
150 0.03924 17.4 -1.85
T
Material B(K)
(°C)
J-J5 3480
R(T) / R25 TF (%) α (%/°C)
-55 51.75 20.5 -6.23
-50 37.98 17.7 -6.03
-45 28.15 15.2 -5.84
-40 21.07 13.0 -5.65
-35 15.91 11.0 -5.48
-30 12.13 9.3 -5.31
-25 9.321 7.8 -5.15
-20 7.222 6.4 -4.99
-15 5.640 5.2 -4.84
-10 4.438 4.2 -4.69
-5 3.517 3.3 -4.55
0 2.807 2.5 -4.42
5 2.255 1.8 -4.29
10 1.824 1.2 -4.17
15 1.484 0.7 -4.05
20 1.215 0.3 -3.93
25 1.0000 0.0 -3.82
30 0.8278 0.3 -3.71
35 0.6889 0.7 -3.61
40 0.5763 1.1 -3.51
45 0.4845 1.5 -3.41
50 0.4092 2.0 -3.32
55 0.3472 2.5 -3.23
60 0.2960 3.0 -3.15
65 0.2533 3.5 -3.06
70 0.2177 4.1 -2.98
75 0.1879 4.7 -2.90
80 0.1628 5.3 -2.83
85 0.1415 5.9 -2.76
90 0.12349 6.5 -2.69
95 0.10813 7.1 -2.62
100 0.09499 7.7 -2.55
105 0.08372 8.4 -2.49
110 0.07402 9.0 -2.43
115 0.06564 9.7 -2.37
120 0.05837 10.3 -2.31
125 0.05206 11.0 -2.26
130 0.04656 11.6 -2.21
135 0.04175 12.3 -2.15
140 0.03753 13.0 -2.10
145 0.03382 13.6 -2.06
150 0.03055 14.3 -2.01
T
Material B(K)
(°C)
K 3630
R(T) / R25 TF (%) α (%/°C)
-55 56.27 21.4 -6.25
-50 41.22 18.5 -6.06
-45 30.48 15.9 -5.89
-40 22.74 13.6 -5.71
-35 17.11 11.5 -5.55
-30 12.98 9.7 -5.39
-25 9.931 8.1 -5.24
-20 7.655 6.7 -5.09
-15 5.945 5.4 -4.95
-10 4.651 4.4 -4.81
-5 3.663 3.4 -4.67
0 2.905 2.6 -4.54
5 2.319 1.9 -4.42
10 1.862 1.3 -4.30
15 1.505 0.8 -4.18
20 1.223 0.3 -4.07
25 1.0000 0.0 -3.96
30 0.8219 0.3 -3.85
35 0.6792 0.7 -3.75
40 0.5641 1.1 -3.65
45 0.4708 1.6 -3.55
50 0.3949 2.1 -3.46
55 0.3327 2.6 -3.37
60 0.2816 3.1 -3.28
65 0.2393 3.7 -3.20
70 0.2043 4.3 -3.12
75 0.1751 4.9 -3.04
80 0.1506 5.5 -2.96
85 0.1301 6.1 -2.89
90 0.1128 6.8 -2.82
95 0.09811 7.4 -2.75
100 0.08564 8.1 -2.68
105 0.07501 8.7 -2.61
110 0.06591 9.4 -2.55
115 0.05809 10.1 -2.49
120 0.05136 10.8 -2.43
125 0.04554 11.5 -2.37
130 0.04049 12.2 -2.32
135 0.03611 12.8 -2.26
140 0.03228 13.5 -2.21
145 0.02893 14.2 -2.16
150 0.02600 14.9 -2.11
T
Material B(K)
(°C)
KA 3625
R(T) / R25 TF (%) α (%/°C)
-55 61.22 7.1 -6.55
-50 44.25 6.1 -6.33
-45 32.34 5.3 -6.12
-40 23.88 4.5 -5.92
-35 17.81 3.8 -5.73
-30 13.41 3.2 -5.54
-25 10.19 2.7 -5.37
-20 7.815 2.2 -5.20
-15 6.041 1.8 -5.04
-10 4.707 1.5 -4.89
-5 3.696 1.1 -4.74
0 2.923 0.9 -4.60
5 2.329 0.6 -4.46
10 1.867 0.4 -4.33
15 1.507 0.3 -4.21
20 1.224 0.1 -4.09
25 1.0000 0.0 -3.97
30 0.8217 0.1 -3.86
35 0.6788 0.2 -3.75
40 0.5638 0.4 -3.65
45 0.4707 0.5 -3.55
50 0.3948 0.7 -3.46
55 0.3328 0.9 -3.37
60 0.2817 1.0 -3.28
65 0.2396 1.2 -3.19
70 0.2046 1.4 -3.11
75 0.1754 1.6 -3.03
80 0.1510 1.8 -2.96
85 0.1305 2.0 -2.88
90 0.1131 2.3 -2.81
95 0.09844 2.5 -2.74
100 0.08596 2.7 -2.68
105 0.07530 2.9 -2.61
110 0.06618 3.1 -2.55
115 0.05833 3.4 -2.49
120 0.05157 3.6 -2.43
125 0.04573 3.8 -2.38
130 0.04065 4.0 -2.32
135 0.03624 4.3 -2.27
140 0.03239 4.5 -2.22
145 0.02902 4.7 -2.17
150 0.02607 5.0 -2.12
T
Material B(K)
(°C)
KC 3470
R(T) / R25 TF (%) α (%/°C)
-55 60.08 34.0 -7.00
-50 43.19 29.4 -6.71
-45 31.42 25.3 -6.44
-40 23.13 21.6 -6.18
-35 17.22 18.4 -5.94
-30 12.95 15.5 -5.71
-25 9.842 12.9 -5.49
-20 7.550 10.7 -5.29
-15 5.845 8.7 -5.10
-10 4.564 6.9 -4.91
-5 3.594 5.4 -4.74
0 2.853 4.1 -4.58
5 2.281 3.0 -4.42
10 1.838 2.0 -4.27
15 1.491 1.2 -4.13
20 1.217 0.5 -4.00
25 1.0000 0.0 -3.90
30 0.8267 0.5 -3.74
35 0.6873 1.1 -3.63
40 0.5747 1.8 -3.52
45 0.4830 2.5 -3.41
50 0.4081 3.3 -3.31
55 0.3465 4.1 -3.21
60 0.2955 5.0 -3.12
65 0.2532 5.9 -3.03
70 0.2179 6.8 -2.94
75 0.1883 7.8 -2.86
80 0.1634 8.7 -2.78
85 0.1423 9.7 -2.71
90 0.1244 10.8 -2.63
95 0.10915 11.8 -2.56
100 0.09608 12.9 -2.50
105 0.08486 13.9 -2.43
110 0.07519 15.0 -2.37
115 0.06683 16.1 -2.31
120 0.05957 17.2 -2.25
125 0.05325 18.3 -2.20
130 0.04774 19.4 -2.14
135 0.04290 20.5 -2.09
140 0.03866 21.6 -2.04
145 0.03492 22.7 -1.99
150 0.03162 23.8 -1.95
T
Material B(K)
(°C)
L 3790
R(T) / R25 TF (%) α (%/°C)
-55 82.54 22.3 -7.12
-50 58.03 19.3 -6.87
-45 41.31 16.6 -6.63
-40 29.75 14.2 -6.40
-35 21.68 12.0 -6.18
-30 15.97 10.1 -5.98
-25 11.88 8.5 -5.78
-20 8.931 7.0 -5.59
-15 6.777 5.7 -5.40
-10 5.188 4.5 -5.23
-5 4.007 3.6 -5.06
0 3.120 2.7 -4.90
5 2.449 2.0 -4.75
10 1.937 1.3 -4.60
15 1.543 0.8 -4.46
20 1.238 0.4 -4.33
25 1.0000 0.0 -4.20
30 0.8128 0.3 -4.07
35 0.6648 0.7 -3.95
40 0.5469 1.2 -3.84
45 0.4525 1.6 -3.73
50 0.3764 2.2 -3.62
55 0.3148 2.7 -3.52
60 0.2646 3.3 -3.42
65 0.2235 3.8 -3.33
70 0.1896 4.5 -3.24
75 0.1616 5.1 -3.15
80 0.1383 5.7 -3.07
85 0.1189 6.4 -2.98
90 0.1026 7.1 -2.91
95 0.08888 7.7 -2.83
100 0.07728 8.4 -2.76
105 0.06744 9.1 -2.69
110 0.05905 9.8 -2.62
115 0.05188 10.5 -2.56
120 0.04572 11.3 -2.49
125 0.04042 12.0 -2.43
130 0.03585 12.7 -2.37
135 0.03188 13.4 -2.32
140 0.02843 14.1 -2.26
145 0.02542 14.8 -2.21
150 0.02279 15.6 -2.16
6
010617
Tables of Resistance vs Temperature
T
Material B(K)
(°C)
L2 3805
R(T) / R25 TF (%) α (%/°C)
-55 62.45 22.4 -6.41
-50 45.40 19.3 -6.22
-45 33.33 16.6 -6.03
-40 24.70 14.2 -5.85
-35 18.47 12.1 -5.68
-30 13.92 10.2 -5.52
-25 10.58 8.5 -5.36
-20 8.110 7.0 -5.21
-15 6.260 5.7 -5.07
-10 4.867 4.6 -4.93
-5 3.810 3.6 -4.80
0 3.003 2.7 -4.67
5 2.382 2.0 -4.55
10 1.901 1.3 -4.43
15 1.526 0.8 -4.31
20 1.232 0.4 -4.20
25 1.0000 0.0 -4.10
30 0.8161 0.3 -4.00
35 0.6694 0.7 -3.90
40 0.5518 1.2 -3.80
45 0.4570 1.7 -3.71
50 0.3802 2.2 -3.62
55 0.3178 2.7 -3.53
60 0.2667 3.3 -3.45
65 0.2248 3.9 -3.37
70 0.1902 4.5 -3.29
75 0.1615 5.1 -3.22
80 0.1377 5.8 -3.14
85 0.1179 6.4 -3.07
90 0.1012 7.1 -3.00
95 0.08721 7.8 -2.94
100 0.07539 8.5 -2.87
105 0.06538 9.2 -2.81
110 0.05688 9.9 -2.75
115 0.04963 10.6 -2.69
120 0.04343 11.3 -2.63
125 0.03812 12.0 -2.58
130 0.03354 12.7 -2.53
135 0.02960 13.5 -2.47
140 0.02618 14.2 -2.42
145 0.02322 14.9 -2.37
150 0.02064 15.6 -2.33
T
Material B(K)
(°C)
M 3950
R(T) / R25 TF (%) α (%/°C)
-55 99.59 23.2 -7.42
-50 68.97 20.1 -7.16
-45 48.40 17.3 -6.91
-40 34.38 14.8 -6.67
-35 24.71 12.5 -6.45
-30 17.97 10.6 -6.23
-25 13.20 8.8 -6.02
-20 9.804 7.3 -5.82
-15 7.352 5.9 -5.63
-10 5.565 4.7 -5.45
-5 4.251 3.7 -5.28
0 3.275 2.8 -5.11
5 2.544 2.0 -4.95
10 1.992 1.4 -4.80
15 1.572 0.8 -4.65
20 1.249 0.4 -4.51
25 1.0000 0.0 -4.38
30 0.8057 0.4 -4.25
35 0.6534 0.8 -4.12
40 0.5331 1.2 -4.00
45 0.4376 1.7 -3.89
50 0.3612 2.2 -3.77
55 0.2998 2.8 -3.67
60 0.2501 3.4 -3.57
65 0.2097 4.0 -3.47
70 0.1767 4.6 -3.37
75 0.1496 5.3 -3.28
80 0.1272 6.0 -3.19
85 0.1087 6.7 -3.11
90 0.09320 7.4 -3.03
95 0.08025 8.1 -2.95
100 0.06937 8.8 -2.87
105 0.06019 9.5 -2.80
110 0.05242 10.2 -2.73
115 0.04580 11.0 -2.66
120 0.04016 11.7 -2.60
125 0.03532 12.5 -2.53
130 0.03117 13.2 -2.47
135 0.02758 14.0 -2.41
140 0.02448 14.7 -2.36
145 0.02179 15.5 -2.30
150 0.01945 16.2 -2.25
T
Material B(K)
(°C)
MA 3965
R(T) / R25 TF (%) α (%/°C)
-55 101.1 3.9 -7.49
-50 69.81 3.4 -7.22
-45 48.87 2.9 -6.96
-40 34.65 2.5 -6.71
-35 24.87 2.1 -6.48
-30 18.06 1.8 -6.26
-25 13.26 1.5 -6.05
-20 9.837 1.2 -5.84
-15 7.372 1.0 -5.65
-10 5.578 0.8 -5.47
-5 4.259 0.6 -5.29
0 3.280 0.5 -5.12
5 2.548 0.3 -4.96
10 1.994 0.2 -4.81
15 1.573 0.1 -4.66
20 1.250 0.1 -4.52
25 1.0000 0.0 -4.38
30 0.8054 0.1 -4.25
35 0.6528 0.1 -4.13
40 0.5324 0.2 -4.01
45 0.4368 0.3 -3.90
50 0.3603 0.4 -3.79
55 0.2989 0.5 -3.68
60 0.2492 0.6 -3.58
65 0.2088 0.7 -3.48
70 0.1758 0.8 -3.39
75 0.1487 0.9 -3.30
80 0.1263 1.0 -3.21
85 0.1078 1.1 -3.13
90 0.09233 1.2 -3.05
95 0.07941 1.3 -2.97
100 0.06857 1.5 -2.90
105 0.05942 1.6 -2.83
110 0.05167 1.7 -2.76
115 0.04509 1.8 -2.69
120 0.03948 2.0 -2.62
125 0.03467 2.1 -2.56
130 0.03055 2.2 -2.50
135 0.02699 2.3 -2.44
140 0.02392 2.5 -2.39
145 0.02125 2.6 -2.33
150 0.01894 2.7 -2.28
T
Material B(K)
(°C)
MC 3910
R(T) / R25 TF (%) α (%/°C)
-55 100.6 23.0 -7.56
-50 69.29 19.9 -7.27
-45 48.40 17.1 -7.00
-40 34.27 14.6 -6.75
-35 24.57 12.4 -6.50
-30 17.83 10.5 -6.27
-25 13.09 8.7 -6.05
-20 9.71 7.2 -5.84
-15 7.282 5.9 -5.64
-10 5.514 4.7 -5.45
-5 4.215 3.7 -5.27
0 3.250 2.8 -5.10
5 2.528 2.0 -4.93
10 1.982 1.4 -4.77
15 1.567 0.8 -4.62
20 1.247 0.4 -4.48
25 1.0000 0.0 -4.34
30 0.8072 0.4 -4.21
35 0.6559 0.8 -4.08
40 0.5362 1.2 -3.96
45 0.4410 1.7 -3.85
50 0.3647 2.2 -3.74
55 0.3033 2.8 -3.63
60 0.2535 3.4 -3.53
65 0.2130 4.0 -3.43
70 0.1798 4.6 -3.34
75 0.1525 5.2 -3.25
80 0.1300 5.9 -3.16
85 0.1112 6.6 -3.08
90 0.09552 7.3 -2.99
95 0.08239 8.0 -2.92
100 0.07133 8.7 -2.84
105 0.06199 9.4 -2.77
110 0.05406 10.1 -2.70
115 0.04731 10.9 -2.63
120 0.04153 11.6 -2.57
125 0.03658 12.3 -2.51
130 0.03231 13.1 -2.45
135 0.02863 13.8 -2.39
140 0.02544 14.6 -2.33
145 0.02267 15.3 -2.28
150 0.02025 16.1 -2.23
T
Material B(K)
(°C)
N 4080
R(T) / R25 TF (%) α (%/°C)
-55 110.1 24.0 -7.50
-50 75.89 20.7 -7.25
-45 52.97 17.8 -7.01
-40 37.42 15.2 -6.78
-35 26.75 12.9 -6.56
-30 19.33 10.9 -6.35
-25 14.11 9.1 -6.14
-20 10.41 7.5 -5.95
-15 7.758 6.1 -5.76
-10 5.834 4.9 -5.58
-5 4.426 3.8 -5.41
0 3.387 2.9 -5.24
5 2.614 2.1 -5.08
10 2.033 1.4 -4.93
15 1.593 0.9 -4.78
20 1.258 0.4 -4.64
25 1.0000 0.0 -4.51
30 0.8004 0.4 -4.37
35 0.6449 0.8 -4.25
40 0.5228 1.3 -4.13
45 0.4264 1.8 -4.01
50 0.3497 2.3 -3.90
55 0.2885 2.9 -3.79
60 0.2392 3.5 -3.68
65 0.1994 4.1 -3.58
70 0.1671 4.8 -3.49
75 0.1406 5.5 -3.39
80 0.1189 6.2 -3.30
85 0.1010 6.9 -3.22
90 0.08616 7.6 -3.13
95 0.07381 8.3 -3.05
100 0.06347 9.1 -2.97
105 0.05480 9.8 -2.90
110 0.04748 10.6 -2.83
115 0.04129 11.3 -2.76
120 0.03603 12.1 -2.69
125 0.03155 12.9 -2.62
130 0.02771 13.7 -2.56
135 0.02442 14.4 -2.50
140 0.02158 15.2 -2.44
145 0.01913 16.0 -2.38
150 0.01700 16.8 -2.33
T
Material B(K)
(°C)
NA 4100
R(T) / R25 TF (%) α (%/°C)
--55 109.5 8.0 -7.53
-50 75.44 6.9 -7.27
-45 52.64 6.0 -7.02
-40 37.19 5.1 -6.78
-35 26.59 4.3 -6.56
-30 19.22 3.7 -6.34
-25 14.05 3.1 -6.14
-20 10.37 2.5 -5.94
-15 7.730 2.1 -5.75
-10 5.817 1.6 -5.57
-5 4.417 1.3 -5.40
0 3.382 1.0 -5.23
5 2.611 0.7 -5.08
10 2.032 0.5 -4.92
15 1.593 0.3 -4.78
20 1.258 0.1 -4.64
25 1.0000 0.0 -4.51
30 0.8003 0.1 -4.38
35 0.6446 0.3 -4.25
40 0.5224 0.4 -4.14
45 0.4258 0.6 -4.02
50 0.3490 0.8 -3.91
55 0.2877 1.0 -3.81
60 0.2383 1.2 -3.71
65 0.1984 1.4 -3.61
70 0.1660 1.6 -3.51
75 0.1395 1.8 -3.42
80 0.1178 2.1 -3.34
85 0.09989 2.3 -3.25
90 0.08506 2.5 -3.17
95 0.07271 2.8 -3.09
100 0.06240 3.0 -3.02
105 0.05375 3.3 -2.94
110 0.04647 3.5 -2.87
115 0.04032 3.8 -2.81
120 0.03509 4.1 -2.74
125 0.03065 4.3 -2.68
130 0.02685 4.6 -2.61
135 0.02359 4.8 -2.55
140 0.02079 5.1 -2.50
145 0.01837 5.4 -2.44
150 0.01628 5.6 -2.39
P1-P3P4-P6P7-P9

NB21PC0472JBB

Mfr. #:
Buy NB21PC0472JBB
Manufacturer:
N/A
Description:
Thermistors - NTC 4700 OHMS 5%
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

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