NANJING SHIHENG ELECTRONICS CO.,
LTD.
APPROVAL
SHEET
CUSTOMER
PART NAME
PART NUMBER
DATE
CMF Chip NTC Thermistor
CMF B 103F3970
2016-05-03
CONFIRM
CLIENT
MANUFACTOR
Quality
Dep.:
Produce
Dep.:
Engineering
Dep.:
Design:
Check:
JUXIAOLI
ZUYU
Approval:
NANJING SHIHENG ELECTRONICS CO., LTD.
Address:No.18 Jiangyang Road,Hushu Town,Jiangning District,, Nanjing, City.
Postcode:211121
Http://www.shiheng.com.cn
TEL:025-52121868
FAX:025-52122373
E-MAIL: sales@shiheng.com.cn
Specification of SMD Chips Thermistor
PART NO. : CMF B 103F3970
DIMENSION
W
T
L1
L1
L
2012(0805)
L(mm)
W(mm)
T(mm)
L1(mm)
2.0±0.2
1.25±0.2
1.20max
0.20~0.60
Glass
Sn Plating
NI Plating
Ag Electrode
Thermistor
ELECTRICAL CHARACTERISTICS
Style
Symbol
Condition
R25
T = 25 ± 0.1℃
10KΩ ±1%
B Constant
B
25℃ to 85℃
3970。K ±1%
Thermal Time Constant
T
T = 25 ± 0.1℃
Approx. 7.5sec
Thermal Dissipation Constant
C
T = 25 ± 0.1℃
Approx. 4mw/℃
Maximum Power Rating
Pw
T = 25 ± 0.1℃
400 mW
Operation Temp. Range
--
--
Resistance at 25℃
Specification
-40℃ ~ 125℃
ENVIRONMENTAL CHARACTERISTICS
PERFORMANCE
Life
Humidity (Steady State)
Thermal Shock
Solderability
Resistance to Soldering
Heat
Bending Strength
Resistance to flexure of
Substrate
Insulation Resistance
Dielectric Withstand
Voltage
TEST METHOD
APPRAISE
MIL – STD – 202F , Method 108A
1000 hours at 70℃ NTCWV intermittent
MIL – STD – 202F . Method 103B
1000 hours at Temperature: 40℃ Humidity: 95%
MIL – STD – 202F . Method 107
10 cycles, -40℃ to +125℃
MIL – STD – 202F . Method 208
235℃ for 2 seconds
MIL – R – 55342D ,Para 4.7.7
Soldered to test board at 260℃ for 10 seconds
JIS C 5202 5.7
Pressurizing rod at a rate at 1mm/sec for 1mm
JIS C 5202 5.7
Pressurizing force shall be 3kg(min)
MIL – STD – 202F . Method 302
DC250V For 10seconds
MIL – STD – 202F . Method 301
DC250V For 10seconds
Soldering
Cooling (in air)
Temperature(℃)
60 sec max
10 sec max
±3%
Within
±3%
95% min .
coverage
Within
±3%
Within
±3%
Not Short
130~160℃
1~3℃/sec
Within
Over
1000Mohm
230~240℃
1~3℃/sec
±3%
Over 3kg
REFLOW SOLDERING PROFILE
Preheat (in air)
Within
Time
TAPING
Taping Dimensions
Dimension
0805
A
1.50
B
2.30
W
8.00
D
1.50
E
1.75
F
3.50
P
4.00
PO
2.00
4P
16.00
Unit : mm
+0.05
1.08
-0.10
+0.05
1.85
-0.10
+0.05
8.00
-0.05
+0.10
1.50
-0.00
+0.05
1.75
-0.05
+0.05
3.50
-0.05
+0.05
4.00
-0.05
+0.05
2.00
-0.05
+0.05
16.00
-0.05
0603
+0.05
0.66
-0.10
+0.05
1.15
-0.10
+0.05
8.00
-0.05
+0.10
1.50
-0.00
+0.05
1.75
-0.05
+0.05
3.50
-0.05
+0.05
4.00
-0.05
+0.05
2.00
-0.05
+0.05
16.00
-0.05
0402
+0.03
-0.03
+0.03
-0.03
+0.05
-0.05
+0.10
-0.00
+0.05
-0.05
+0.05
-0.05
+0.05
-0.05
+0.05
-0.05
+0.05
-0.05
REEL DIMENSIONS
B
A
B
D
C
Unit: mm
A
B
C
D
178.0±1.0
60.0±1.0
9.0±0.1
13.0±0.1
ORDERING INFORMATION
CMF
B
103
F
3970
①
② ③
④
⑤
1. Series : CHIP NTC Thermistor.
2. Dimension : B ( 0805 ) , A ( 0603 ) , X ( 0402 )
3. Resistance : 103 = 10,000 ohm
4. R Tolerance : F±1% ; H±3% ; J±5%
5. B value : 3970K
Accessory : RESISTANCE-TEMPERATURE CHARACTERISTICS
RESISTANCE-TEMPERATURE CHARACTERISTICS
R-T Table
Resistance@25℃
B Constant
Temp ℃
-40
-39
-38
-37
-36
-35
-34
-33
-32
-31
-30
-29
-28
-27
-26
-25
-24
-23
-22
-21
-20
-19
-18
-17
-16
-15
-14
-13
-12
-11
-10
-9
-8
-7
-6
-5
-4
-3
-2
-1
0
1
2
3
4
10.000 ㏀
3970K
Rmin
㏀
320.911
300.530
281.572
263.929
247.502
232.201
217.941
204.646
192.244
180.671
169.867
159.775
150.344
141.529
133.284
125.570
118.350
111.589
105.255
99.319
93.754
88.535
83.637
79.040
74.723
70.668
66.857
63.275
59.905
56.736
53.752
50.944
48.298
45.806
43.457
41.242
39.154
37.183
35.323
33.567
31.908
30.341
28.860
27.460
26.136
Ravg
㏀
335.745
314.213
294.198
275.584
258.265
242.142
227.126
213.135
200.093
187.929
176.580
165.987
156.094
146.852
138.213
130.136
122.579
115.508
108.887
102.687
96.876
91.430
86.323
81.531
77.035
72.813
68.848
65.123
61.621
58.328
55.231
52.317
49.574
46.990
44.557
42.264
40.102
38.064
36.141
34.326
32.613
30.996
29.468
28.024
26.660
±1.0%
(25℃/85℃)
Rmax
㏀
351.229
328.487
307.361
287.726
269.468
252.483
236.674
221.954
208.240
195.459
183.541
172.423
162.047
152.359
143.310
134.853
126.947
119.553
112.634
106.157
100.092
94.411
89.086
84.093
79.410
75.016
70.891
67.018
63.379
59.960
56.745
53.722
50.877
48.200
45.680
43.306
41.070
38.962
36.974
35.100
33.331
31.662
30.086
28.598
27.192
±1.0%
ΔR
4.611
4.542
4.473
4.405
4.337
4.270
4.203
4.137
4.071
4.006
3.941
3.877
3.813
3.750
3.687
3.625
3.563
3.501
3.440
3.380
3.319
3.260
3.200
3.141
3.083
3.025
2.967
2.910
2.853
2.796
2.740
2.685
2.629
2.574
2.520
2.466
2.412
2.359
2.306
2.253
2.201
2.149
2.097
2.046
1.995
-ΔR
-4.418
-4.354
-4.291
-4.229
-4.167
-4.105
-4.043
-3.982
-3.922
-3.861
-3.802
-3.742
-3.683
-3.624
-3.566
-3.508
-3.450
-3.392
-3.335
-3.279
-3.222
-3.166
-3.111
-3.055
-3.000
-2.946
-2.891
-2.837
-2.783
-2.730
-2.677
-2.624
-2.572
-2.520
-2.468
-2.416
-2.365
-2.314
-2.263
-2.213
-2.163
-2.113
-2.064
-2.014
-1.966
ΔT(℃)
0.667
0.662
0.657
0.652
0.647
0.642
0.637
0.631
0.626
0.621
0.615
0.610
0.604
0.599
0.593
0.587
0.582
0.576
0.570
0.564
0.558
0.552
0.546
0.540
0.534
0.527
0.521
0.515
0.508
0.502
0.495
0.488
0.482
0.475
0.468
0.461
0.454
0.447
0.440
0.433
0.426
0.419
0.411
0.404
0.397
-0.639
-0.634
-0.630
-0.626
-0.621
-0.617
-0.612
-0.608
-0.603
-0.598
-0.593
-0.589
-0.584
-0.579
-0.574
-0.568
-0.563
-0.558
-0.553
-0.547
-0.542
-0.536
-0.531
-0.525
-0.519
-0.513
-0.508
-0.502
-0.496
-0.490
-0.483
-0.477
-0.471
-0.465
-0.458
-0.452
-0.445
-0.439
-0.432
-0.425
-0.419
-0.412
-0.405
-0.398
-0.391
R-T Table
Resistance@25℃
B Constant
Temp ℃
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
10.000 ㏀
3970K
Rmin
㏀
24.883
23.698
22.576
21.513
20.507
19.554
18.649
17.792
16.980
16.209
15.477
14.783
14.123
13.497
12.902
12.337
11.799
11.288
10.802
10.340
9.900
9.472
9.066
8.679
8.311
7.960
7.627
7.309
7.006
6.717
6.441
6.179
5.928
5.690
5.461
5.244
5.036
4.837
4.648
4.467
4.294
4.128
3.970
3.818
3.674
Ravg
㏀
25.370
24.149
22.994
21.901
20.867
19.888
18.959
18.079
17.245
16.454
15.704
14.993
14.317
13.676
13.067
12.489
11.940
11.417
10.921
10.449
10.000
9.572
9.165
8.778
8.409
8.058
7.724
7.405
7.101
6.811
6.534
6.271
6.019
5.779
5.549
5.330
5.121
4.921
4.730
4.547
4.373
4.206
4.046
3.893
3.747
±1.0%
(25℃/85℃)
Rmax
㏀
25.863
24.607
23.419
22.295
21.231
20.225
19.271
18.368
17.513
16.702
15.933
15.204
14.512
13.856
13.233
12.642
12.080
11.547
11.040
10.558
10.100
9.672
9.265
8.878
8.508
8.156
7.821
7.501
7.196
6.905
6.628
6.363
6.110
5.868
5.638
5.417
5.207
5.006
4.813
4.629
4.453
4.285
4.124
3.970
3.822
±1.0%
ΔR
1.944
1.894
1.844
1.794
1.745
1.696
1.648
1.599
1.551
1.504
1.456
1.409
1.363
1.316
1.270
1.224
1.179
1.134
1.089
1.044
1.000
1.044
1.088
1.131
1.175
1.218
1.261
1.303
1.346
1.388
1.430
1.472
1.513
1.555
1.596
1.637
1.678
1.718
1.758
1.798
1.838
1.878
1.917
1.957
1.996
-ΔR
-1.917
-1.869
-1.820
-1.773
-1.725
-1.678
-1.631
-1.584
-1.538
-1.491
-1.445
-1.400
-1.354
-1.309
-1.264
-1.219
-1.175
-1.131
-1.087
-1.043
-1.000
-1.043
-1.086
-1.128
-1.171
-1.213
-1.255
-1.296
-1.338
-1.379
-1.420
-1.460
-1.501
-1.541
-1.581
-1.620
-1.660
-1.699
-1.738
-1.776
-1.815
-1.853
-1.891
-1.929
-1.966
ΔT(℃)
0.389
0.382
0.374
0.367
0.359
0.351
0.343
0.335
0.327
0.319
0.311
0.303
0.295
0.287
0.279
0.270
0.262
0.253
0.245
0.236
0.228
0.239
0.251
0.263
0.275
0.286
0.298
0.310
0.323
0.335
0.347
0.359
0.372
0.384
0.397
0.410
0.422
0.435
0.448
0.461
0.474
0.487
0.500
0.514
0.527
-0.384
-0.377
-0.369
-0.362
-0.355
-0.347
-0.340
-0.332
-0.325
-0.317
-0.309
-0.301
-0.293
-0.285
-0.277
-0.269
-0.261
-0.253
-0.245
-0.236
-0.228
-0.239
-0.251
-0.262
-0.274
-0.285
-0.297
-0.309
-0.321
-0.333
-0.345
-0.357
-0.369
-0.381
-0.393
-0.405
-0.418
-0.430
-0.443
-0.455
-0.468
-0.481
-0.493
-0.506
-0.519
R-T Table
Resistance@25℃
B Constant
Temp ℃
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
10.000 ㏀
3970K
Rmin
㏀
3.534
3.402
3.275
3.154
3.037
2.926
2.819
2.717
2.619
2.524
2.434
2.348
2.265
2.185
2.109
2.035
1.965
1.897
1.832
1.769
1.709
1.652
1.596
1.543
1.492
1.442
1.395
1.349
1.305
1.263
1.222
1.183
1.145
1.109
1.074
1.040
1.008
0.976
0.946
0.917
0.889
0.862
0.836
0.810
0.786
±1.0%
(25℃/85℃)
Ravg
㏀
3.607
3.473
3.345
3.222
3.104
2.991
2.883
2.780
2.680
2.585
2.493
2.405
2.321
2.240
2.163
2.088
2.017
1.948
1.882
1.818
1.757
1.698
1.642
1.588
1.535
1.485
1.437
1.390
1.345
1.302
1.261
1.221
1.182
1.145
1.109
1.075
1.041
1.009
0.978
0.948
0.920
0.892
0.865
0.839
0.814
Rmax
㏀
3.680
3.545
3.416
3.291
3.172
3.058
2.948
2.843
2.743
2.646
2.553
2.464
2.379
2.297
2.218
2.142
2.070
2.000
1.932
1.868
1.806
1.746
1.688
1.633
1.580
1.529
1.479
1.432
1.386
1.342
1.300
1.259
1.220
1.182
1.145
1.110
1.076
1.043
1.011
0.981
0.951
0.923
0.895
0.869
0.843
±1.0%
ΔR
2.035
2.073
2.112
2.150
2.188
2.226
2.263
2.301
2.338
2.375
2.412
2.449
2.485
2.522
2.558
2.594
2.629
2.665
2.701
2.736
2.771
2.806
2.841
2.875
2.910
2.944
2.978
3.012
3.046
3.079
3.113
3.146
3.179
3.212
3.245
3.277
3.310
3.342
3.374
3.406
3.438
3.470
3.502
3.533
3.564
-ΔR
-2.004
-2.041
-2.078
-2.114
-2.151
-2.187
-2.223
-2.259
-2.294
-2.330
-2.365
-2.400
-2.435
-2.469
-2.504
-2.538
-2.572
-2.606
-2.639
-2.673
-2.706
-2.739
-2.772
-2.805
-2.837
-2.869
-2.901
-2.933
-2.965
-2.997
-3.028
-3.060
-3.091
-3.122
-3.152
-3.183
-3.213
-3.244
-3.274
-3.304
-3.334
-3.363
-3.393
-3.422
-3.451
ΔT(℃)
0.540
0.554
0.567
0.581
0.595
0.609
0.623
0.636
0.651
0.665
0.679
0.693
0.707
0.722
0.736
0.751
0.766
0.780
0.795
0.810
0.825
0.840
0.855
0.870
0.886
0.901
0.916
0.932
0.948
0.963
0.979
0.995
1.011
1.027
1.043
1.059
1.075
1.091
1.108
1.124
1.141
1.157
1.174
1.191
1.207
-0.532
-0.545
-0.558
-0.571
-0.585
-0.598
-0.611
-0.625
-0.638
-0.652
-0.666
-0.679
-0.693
-0.707
-0.721
-0.735
-0.749
-0.763
-0.777
-0.791
-0.806
-0.820
-0.835
-0.849
-0.864
-0.878
-0.893
-0.908
-0.923
-0.937
-0.952
-0.967
-0.983
-0.998
-1.013
-1.028
-1.044
-1.059
-1.075
-1.090
-1.106
-1.122
-1.137
-1.153
-1.169
R-T Table
Resistance@25℃
B Constant
Temp ℃
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
10.000 ㏀
3970K
Rmin
㏀
0.762
0.740
0.718
0.697
0.676
0.656
0.637
0.619
0.601
0.584
0.567
0.551
0.536
0.520
0.506
0.492
0.478
0.465
0.452
0.440
0.428
0.416
0.405
0.394
0.384
0.373
0.363
0.354
0.345
0.336
0.327
±1.0%
(25℃/85℃)
Ravg
㏀
0.790
0.767
0.744
0.722
0.701
0.681
0.662
0.643
0.624
0.607
0.589
0.573
0.557
0.541
0.526
0.512
0.498
0.484
0.471
0.458
0.446
0.434
0.422
0.411
0.400
0.390
0.379
0.369
0.360
0.351
0.342
Rmax
㏀
0.818
0.794
0.771
0.749
0.728
0.706
0.687
0.667
0.648
0.630
0.612
0.595
0.579
0.563
0.547
0.532
0.518
0.504
0.490
0.477
0.464
0.452
0.440
0.429
0.417
0.406
0.396
0.386
0.376
0.366
0.357
±1.0%
ΔR
3.595
3.626
3.657
3.688
3.719
3.750
3.779
3.809
3.839
3.869
3.899
3.929
3.958
3.988
4.017
4.046
4.075
4.104
4.132
4.161
4.189
4.218
4.246
4.274
4.302
4.330
4.357
4.385
4.412
4.440
4.467
-ΔR
-3.480
-3.509
-3.538
-3.566
-3.595
-3.624
-3.651
-3.679
-3.707
-3.735
-3.762
-3.790
-3.817
-3.844
-3.871
-3.898
-3.925
-3.951
-3.978
-4.004
-4.030
-4.056
-4.082
-4.108
-4.134
-4.160
-4.185
-4.210
-4.235
-4.261
-4.286
ΔT(℃)
1.224
1.241
1.258
1.275
1.293
1.310
1.327
1.345
1.362
1.380
1.397
1.415
1.433
1.451
1.469
1.487
1.505
1.523
1.542
1.560
1.578
1.597
1.615
1.634
1.653
1.672
1.691
1.710
1.729
1.748
1.767
-1.185
-1.201
-1.217
-1.233
-1.250
-1.266
-1.282
-1.299
-1.315
-1.332
-1.348
-1.365
-1.382
-1.399
-1.416
-1.433
-1.450
-1.467
-1.484
-1.501
-1.518
-1.536
-1.553
-1.571
-1.588
-1.606
-1.624
-1.641
-1.659
-1.677
-1.695
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