NTC Accurate Leaded Thermistors
NI24 • NJ28
APPLICATIONS
• High precision resistance
• Tight B tolerance
• Ideal for temperature measurement applications
TECHNOLOGY
• NJ range: Coated chip (phenolic resin + varnish overcoat + bare leads)
• NI range: Coated chip (epoxy resin and insulated leads)
• Leads: Radial wire: NJ: tinned copper (*)
NI: PTFE insulated silvered nickel
• Marking: on package only
• Delivery Mode: Bulk for NI range
Bulk or Reel or Ammopack for NJ range
(*) other materials available: consult us
Accuracy Series
NJ28
NI24
PERFORMANCE CHARACTERISTICS
Types
NJ28
Operating Temperature
Tolerance on Rn (25°C)
Maximum dissipation at 25°C
Thermal dissipation factor
Thermal time constant
Response time
–55 to +150°C
±1%, ±2%, ±3%
0.16 W
3 mW/°C
8s
<2s
Accurate Thermistors
NI24
HOW TO ORDER
NJ28
MA
0502
F
––
Type
Material Code
MA
Resistance
5 kΩ
Tolerance
F (±1%)
Packaging
Bulk
TPC
1
NTC Accurate Leaded Thermistors
NI24 • NJ28
TABLE OF VALUES
NI24
2.40 (0.094) max 2.40 (0.094) max
5.00 to 9.00
(0.197 to 0.354)
35.0 (1.378) min
.....0.53 (0.021) min
AWG 30
Part Number
NI24KA0202
NI24MA0302
NI24MA0502
NI24MA0103
NI24NA0103
NI24PA0203
NI24QA0503
NI24RA0104
Rn at 25°C (Ω)
2000
3000
5000
10000
10000
20000
50000
100000
Material Code
KA
MA
MA
MA
NA
PA
QA
RA
B (K)
3625 ±1%
3960 ±0.5%
3960 ±0.5%
3960 ±0.5%
4100 ±1%
4235 ±1%
4250 ±1%
4380 ±1%
at 25°C (%/°C)
–4.1
–4.5
–4.5
–4.5
–4.6
–4.8
–4.8
–4.9
35.0 (1.378) min
3.00 (0.118) max
TABLE OF VALUES
NJ28
2.80 (0.110) max 2.80 (0.110) max
0.40 (0.016)
- 0.06
+10 %
Part Number
NJ28KA0202
NJ28MA0302
NJ28MA0502
NJ28MA0103
NJ28NA0103
NJ28PA0203
NJ28QA0503
NJ28RA0104
Rn at 25°C (Ω)
2000
3000
5000
5000
10000
20000
50000
100000
Material Code
KA
MA
MA
MA
NA
PA
QA
RA
B (K)
3625 ±1%
3960 ±0.5%
3960 ±0.5%
3960 ±0.5%
4100 ±1%
4235 ±1%
4250 ±1%
4380 ±1%
at 25°C (%/°C)
–4.1
–4.5
–4.5
–4.5
–4.6
–4.8
–4.8
–4.9
2
TPC
NTC Accurate Leaded Thermistors
NI24 • NJ28
TABLE OF RESISTANCE: TEMPERATURE CHARACTERISTICS
T
(°C)
- 55
- 50
- 45
- 40
- 35
- 30
- 25
- 20
- 15
- 10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
R (T) / R25
61.21
44.24
32.33
23.88
17.81
13.41
10.19
7.814
6.040
4.707
3.696
2.923
2.329
1.867
1.507
1.224
1.0000
.8217
.6788
.5638
.4707
.3948
.3328
.2818
.2396
.2046
.1754
.1510
.1305
.1131
.09846
.08597
.07531
.06618
.05834
.05158
.04573
.04066
.03625
.03240
.02903
.02608
KA 3625
TF (%)
7.1
6.1
5.3
4.5
3.8
3.2
2.7
2.2
1.8
1.5
1.1
.9
.6
.4
.3
.1
0.0
.1
.2
.4
.5
.7
.9
1.0
1.2
1.4
1.6
1.8
2.0
2.3
2.5
2.7
2.9
3.1
3.4
3.6
3.8
4.0
4.3
4.5
4.7
5.0
α
(%/°C)
6.77
6.53
6.30
6.08
5.88
5.68
5.49
5.31
5.14
4.98
4.83
4.68
4.53
4.40
4.27
4.14
4.02
3.91
3.80
3.69
3.59
3.49
3.40
3.31
3.22
3.14
3.06
2.98
2.90
2.83
2.76
2.69
2.63
2.56
2.50
2.44
2.39
2.33
2.28
2.23
2.18
2.13
Material code B (K)
MA 3960
R (T) / R25
TF (%)
α
(%/°C)
104.2
3.9
7.89
71.63
3.4
7.57
49.94
2.9
7.28
35.28
2.5
7.00
25.25
2.1
6.73
18.28
1.8
6.48
13.39
1.5
6.25
9.917
1.2
6.02
7.419
1.0
5.81
5.605
.8
5.61
4.275
.6
5.42
3.289
.5
5.24
2.552
.3
5.06
1.997
.2
4.90
1.574
.1
4.74
1.250
.1
4.59
1.0000
0.0
4.45
.8053
.1
4.31
.6527
.1
4.18
.5323
.2
4.06
.4367
.3
3.94
.3604
.4
3.82
.2990
.5
3.71
.2493
.6
3.61
.2090
.7
3.51
.1760
.8
3.41
.1489
.9
3.32
.1266
1.0
3.23
.1081
1.1
3.14
.09262
1.2
3.06
.07970
1.3
2.98
.06885
1.5
2.91
.05969
1.6
2.83
.05194
1.7
2.76
.04535
1.8
2.69
.03973
2.0
2.63
.03491
2.1
2.56
.03077
2.2
2.50
.02721
2.3
2.44
.02412
2.5
2.39
.02145
2.6
2.33
.01912
2.7
2.28
Material code B (K)
QA 4250
R (T) / R25
TF (%)
α
(%/°C)
101.8
8.3
7.36
71.33
7.2
7.13
50.51
6.2
6.91
36.14
5.3
6.70
26.11
4.5
6.50
19.05
3.8
6.31
14.02
3.2
6.12
10.41
2.6
5.85
7.791
2.1
5.78
5.879
1.7
5.62
4.470
1.3
5.46
3.424
1.0
5.31
2.642
.7
5.17
2.052
.5
5.03
1.605
.3
4.90
1.263
.1
4.77
1.0000
0.0
4.65
.7965
.1
4.53
.6380
.3
4.42
.5139
.4
4.31
.4162
.6
4.20
.3388
.8
4.10
.2771
1.0
4.00
.2278
1.2
3.90
.1881
1.4
3.81
.1560
1.7
3.72
.1300
1.9
3.63
.1088
2.1
3.55
.0914
2.4
3.47
.07708
2.6
3.39
.06527
2.9
3.31
.05547
3.2
3.24
.04731
3.4
3.17
.04049
3.7
3.10
.03478
3.9
3.03
.02996
4.2
2.96
.02590
4.5
2.90
.02246
4.7
2.84
.01953
5.0
2.78
.01704
5.3
2.72
.01490
5.5
2.67
.01307
5.8
2.61
R (T) / R25
109.5
75.42
52.63
37.18
26.58
19.22
14.04
10.37
7.730
5.817
4.416
3.382
2.611
2.032
1.593
1.258
1.0000
.8004
.6446
.5224
.4258
.3491
.2877
.2383
.1984
.1660
.1396
.1178
.09991
.08507
.07273
.06241
.05376
.04648
.04032
.03510
.03065
.02685
.02359
.02079
.01838
.01629
NA 4100
TF (%)
8.0
6.9
6.0
5.1
4.3
3.7
3.1
2.5
2.1
1.6
1.3
1.0
.7
.5
.3
.1
0.0
.1
.3
.4
.6
.8
1.0
1.2
1.4
1.6
1.8
2.1
2.3
2.5
2.8
3.0
3.3
3.5
3.8
4.1
4.3
4.6
4.8
5.1
5.4
5.6
α
(%/°C)
7.83
7.54
7.27
7.01
6.76
6.52
6.30
6.09
5.89
5.70
5.51
5.34
5.17
5.01
4.86
4.71
4.57
4.44
4.31
4.19
4.07
3.96
3.85
3.74
3.64
3.55
3.45
3.36
3.28
3.20
3.12
3.04
2.96
2.89
2.82
2.76
2.69
2.63
2.57
2.51
2.45
2.40
T
(°C)
- 55
- 50
- 45
- 40
- 35
- 30
- 25
- 20
- 15
- 10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
T
(°C)
- 55
- 50
- 45
- 40
- 35
- 30
- 25
- 20
- 15
- 10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
R (T) / R25
123.3
84.31
58.37
40.92
29.03
20.83
15.10
11.07
8.189
6.117
4.610
3.504
2.686
2.075
1.615
1.266
1.0000
.7949
.6359
.5119
.4145
.3376
.2765
.2276
.1883
.1566
.1308
.1098
.09258
.07838
.06662
.05686
.04871
.04189
.03614
.03130
.02719
.02370
.02072
.01817
.01598
.01410
PA 4235
TF (%)
8.3
7.2
6.2
5.3
4.5
3.8
3.2
2.6
2.1
1.7
1.3
1.0
.7
.5
.3
.1
0.0
.1
.3
.4
.6
.8
1.0
1.2
1.4
1.7
1.9
2.1
2.4
2.6
2.9
3.1
3.4
3.7
3.9
4.2
4.5
4.7
5.0
5.3
5.5
5.8
α
(%/°C)
8.00
7.71
7.43
7.17
6.92
6.69
6.46
6.25
6.05
5.85
5.67
5.49
5.32
5.16
5.01
4.86
4.72
4.58
4.45
4.32
4.20
4.09
3.98
3.87
3.77
3.67
3.58
3.48
3.40
3.31
3.23
3.15
3.07
3.00
2.93
2.86
2.79
2.73
2.67
2.61
2.55
2.49
R (T) / R25
110.7
77.22
54.43
38.76
27.86
20.22
14.81
10.94
8.143
6.112
4.622
3.522
2.702
2.087
1.623
1.270
1.0000
.7920
.6308
.5052
.4068
.3292
.2678
.2189
.1797
.1483
.1228
.1022
.08537
.07160
.06029
.05095
.04322
.03679
.03143
.02693
.02316
.01997
.01728
.01499
.01305
.01138
RA 4380
TF (%)
8.6
7.4
6.4
5.5
4.6
3.9
3.3
2.7
2.2
1.8
1.4
1.0
.8
.5
.3
.1
0.0
.1
.3
.5
.6
.8
1.0
1.3
1.5
1.7
2.0
2.2
2.5
2.7
3.0
3.2
3.5
3.8
4.1
4.3
4.6
4.9
5.2
5.4
5.7
6.0
α
(%/°C)
7.53
7.29
7.07
6.85
6.65
6.46
6.27
6.09
5.92
5.76
5.60
5.45
5.31
5.17
5.03
4.91
4.78
4.66
4.55
4.43
4.33
4.22
4.12
4.02
3.93
3.84
3.75
3.67
3.58
3.50
3.42
3.35
3.28
3.21
3.14
3.07
3.01
2.94
2.88
2.82
2.77
2.71
T
(°C)
- 55
- 50
- 45
- 40
- 35
- 30
- 25
- 20
- 15
- 10
-5
0
5
10
15
20
25
30
35
40
45
50
55
60
65
70
75
80
85
90
95
100
105
110
115
120
125
130
135
140
145
150
TPC
3
NTC Accurate Leaded Thermistors
NI24 • NJ28
PACKAGING
• Reel & Ammopack
Types
NJ28
millimeters (inches)
• Bulk
Type
NJ28
NI24
Suffix
CA
CB
CC
CD
H or Ho
16
(0.630
16
(0.630
19.5
(0.768
19.5
(0.768
±
±
±
±
±
±
±
±
0.5
0.020)
0.5
0.020)
0.5
0.020)
0.5
0.020)
Leads
Straight
Straight
Straight
Straight
Quantity/Size
3000
3000
3000
3000
Packaging
AMMOPACK
REEL
AMMOPACK
Quantity/box
2000
1000
H
REEL
E
E: 2.54 -0.10 +0.60
(0.100 -0.004 +0.024)
TAPING CHARACTERISTICS
Missing components
A maximum of 3 consecutive components may be missing
from the bandolier, surrounded by at least 6 filled positions.
The number of missing components may not exceed 0.5%
of the total per packing module.
The beginning and the end of tape exhibit 8 or 9 blank
positions.
DIMENSIONS:
millimeters (inches)
AMMOPACK
30 (1.18)
REEL
Interlayer
Paper
P
8 (.315)
L
42 (1.66)
Inside
31 (1.22)
48 (1.99)
Outside
H
L
330 (13.0)
h
h
H
46 (1.81)
P
290 (11.4)
P
Reference plane
360 (14.2)
p
p
Marking on
this side
H
1
W
2
P
1
E
A
B
W
0
H
0
W
1
W
H
H
1
Adhesive
tape
Direction of unreeling
I
2
D
0
P
0
d
Cross section
A-B
E
t
Value
18
6
9
3 max.
4
16/19.5
Tolerance
+1 / -0.5
±0.3
+0.75 / -0.5
W
W
0
W
1
W
2
D
0
H
0
H
1
±0.2
±0.5
Dimensions Characteristics
Leading tape width
Adhesive tape width
Sprocket hole position
Distance between the top of the tape and
the adhesive
Diameter of sprocket hole
Distance between the tape axis and the
seating plane of the component
Distance between the tape axis and the top
of component body
Value
12.7
254
0.7
2.54
5.08
0.5
5.08
3.85
12.7
0.6
0
0
Tolerance
±0.2
±1
±0.2
+0.6
-0.1
± 0.7
±1.0
±5%
±1.3
±2
P
0
–
t
E
P
1
P
d
3
P
3
h
Dimensions Characteristics
Sprocket holes pitch
Distance between 21 consecutive holes
20 pitches
Total thickness of tape
Lead spacing
Distance between the sprocket hole axis
and the lead axis
Spacing of components
Lead diameter
Verticality of components
Alignment of components
4
TPC
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