CMFA 103F3435 chip NTC thermistor from Nanjing Shiheng Elec designed for temperature sensing and control

Price Negotiable

Price: Negotiable

MOQ: Negotiable

Delivery Time: Negotiable

Product Description

NTC Thermistors

Product Overview
Nanjing Shiheng Electronics Technology Co., Ltd. offers the CMFA series of chip NTC thermistors, designed for precise temperature sensing and control. These thermistors are characterized by their high accuracy, reliability, and suitability for a wide range of operating temperatures. They are ideal for applications requiring accurate resistance-temperature characteristics, such as temperature measurement, compensation, and surge current limiting.

Product Attributes

Brand: Shiheng
Origin: Nanjing, China
Product Type: Chip NTC Thermistor
Series: CMFA

Technical Specifications

Part Number	Resistance (25) (k)	B Constant (25/50) (K)	B Constant (25/85) (K)	Permissible Operating Current (25) (mA)	Dissipation Factor (mW/)	Thermal Time Constant (s)	Rated Power (25) (mW)	Operating Ambient Temperature ()	Dimensions (LWT) (mm)	Tolerance of Resistance
CMFA 103F3435	10 1%	3435 1%	3480	0.31	1.0	<5	100	-40+125	1.600.800.80 (A)	J (5%)

Dimensions

Fig. 1: Shape and Dimensions

Fig. 2: Recommended PCB Pattern for Reflow Soldering

Type	L (inch [mm])	W (inch [mm])	T (inch [mm])	a (inch [mm])	A (inch [mm])	B (inch [mm])
[0603]	0.0630.006 [1.60.15]	0.0310.006 [0.80.15]	0.0310.006 [0.80.15]	0.0120.008 [0.30.2]	[0.6-0.8]	[0.6-0.7]

Product Identification Breakdown (CMFA 103F3435)

Type: CMF (Chip NTC Thermistor)
External Dimensions (mm): A (0603) 1.600.800.80
Nominal Zero-Power Resistance at 25: 103 (10k)
Tolerance of Resistance: J (5%)
B Constant: 3435 (3435K)

Test Conditions

Standard Atmospheric Conditions:
- Ambient Temperature: 2015
- Relative Humidity: 6520%
- Air Pressure: 86 kPa~106 kPa

Conditions for Disputed Results:
- Ambient Temperature: 252
- Relative Humidity: 655%
- Air Pressure: 86 kPa~106 kPa

Inspection Equipment

Visual Examination: 20magnifier
Resistance value test: Thermistor resistance tester

Reliability Test Summary

Item	Standard	Requirements
Terminal Strength	IEC 60068-2-21	No removal or split of the termination or other defects shall occur.
Resistance to Flexure	IEC 60068-2-21	No visible damage. \|R25/R25\| 2%
Vibration	IEC 60068-2-80	No visible damage.
Dropping	IEC 60068-2-32	No visible damage.
Solderability	IEC 60068-2-58	No visible damage. Wetting shall exceed 95% coverage.
Resistance to Soldering Heat	IEC 60068-2-58	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%
Temperature Cycling	IEC 60068-2-14	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%
High Temperature Storage	IEC 60068-2-2	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%
Low Temperature Storage	IEC 60068-2-1	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%
Damp Heat Storage	IEC 60068-2-78	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%
High Temperature Load	IEC 60539-1 5.25.4	No visible damage. \|R25/R25\| 2%, \|B/B\| 1%

Taping Information

Type	Tape Thickness (mm)	Tape Material	Quantity per Reel
0201	0.50.15	Paper Tape	15K
X	0.50.15	Paper Tape	10K
A	0.80.15	Paper Tape	4K
B	0.850.2	Paper Tape	4K

Storage Conditions

Storage Temperature: -1040
Relative Humidity: 75%RH
Keep away from dust, corrosive atmosphere, and sunlight.
Period of Storage: 6 Months after delivery

Notes & Warnings

The CMF series thermistors shall not be operated or stored under the following environmental conditions: Corrosive or deoxidized atmospheres, volatile or inflammable atmospheres, dusty conditions, excessively high or low pressure, humid sites, places with brine, oil, chemical liquid or organic solvent, intense vibration, or analogously deleterious conditions.
The ceramic body of the CMF series thermistors is fragile; no excessive pressure or impact shall be exerted on it.
The CMF series thermistors shall not be operated beyond the specified Operating Temperature Range.

Recommended Soldering Technologies

Re-flowing Profile

Ramp: 1~2/sec.
Pre-heating: 150~170/9030 sec.
Time above 240: 20~40 sec.
Peak temperature: 260 Max./10 sec.
Solder paste: 96.5Sn/3.0Ag/0.5Cu
Max. 2 times for re-flowing.

Iron Soldering Profile

Iron soldering power: Max. 20W
Pre-heating: 150/60 sec.
Soldering Tip temperature: 280 Max.
Soldering time: 3 sec Max.
Solder paste: 96.5Sn/3.0Ag/0.5Cu
Max. 1 time for iron soldering.
Note: Take care not to apply the tip of the soldering iron to the terminal electrodes.

R-T Table (CMFA 103F3435)

Temperature ()	R Min (k)	R Center (k)	R Max (k)	Resistance TOL.	Temperature TOL. ()
-40	192.371	200.225	208.380	4.07%	0.69
-39	182.189	189.524	197.134	4.02%	0.69
-38	172.599	179.449	186.553	3.96%	0.68
-37	163.561	169.961	176.593	3.90%	0.68
-36	155.043	161.022	167.216	3.85%	0.67
-35	147.012	152.600	158.384	3.79%	0.67
-34	139.439	144.661	150.064	3.73%	0.66
-33	132.294	137.176	142.224	3.68%	0.66
-32	125.552	130.117	134.833	3.63%	0.65
-31	119.189	123.457	127.865	3.57%	0.65
-30	113.181	117.173	121.293	3.52%	0.64
-29	107.507	111.241	115.093	3.46%	0.64
-28	102.147	105.640	109.242	3.41%	0.63
-27	97.083	100.351	103.719	3.36%	0.62
-26	92.295	95.354	98.504	3.30%	0.62
-25	87.769	90.632	93.578	3.25%	0.61
-24	83.489	86.168	88.925	3.20%	0.61
-23	79.440	81.948	84.527	3.15%	0.60
-22	75.608	77.956	80.370	3.10%	0.60
-21	71.981	74.180	76.439	3.04%	0.59
-20	68.548	70.607	72.721	2.99%	0.59
-19	65.296	67.225	69.203	2.94%	0.58
-18	62.216	64.022	65.874	2.89%	0.57
-17	59.297	60.989	62.723	2.84%	0.57
-16	56.531	58.116	59.739	2.79%	0.56
-15	53.908	55.393	56.913	2.74%	0.56
-14	51.421	52.812	54.236	2.69%	0.55
-13	49.062	50.366	51.698	2.65%	0.54
-12	46.824	48.045	49.293	2.60%	0.54
-11	44.700	45.844	47.013	2.55%	0.53
-10	42.683	43.755	44.850	2.50%	0.52
-9	40.768	41.772	42.798	2.45%	0.52
-8	38.949	39.890	40.851	2.41%	0.51
-7	37.221	38.103	39.002	2.36%	0.50
-6	35.578	36.405	37.247	2.31%	0.50
-5	34.017	34.792	35.581	2.27%	0.49
-4	32.533	33.259	33.998	2.22%	0.48
-3	31.121	31.802	32.493	2.18%	0.48
-2	29.779	30.416	31.064	2.13%	0.47
-1	28.501	29.098	29.704	2.08%	0.46
0	27.285	27.844	28.412	2.04%	0.46
1	26.127	26.651	27.182	1.99%	0.45
2	25.024	25.515	26.013	1.95%	0.44
3	23.974	24.434	24.899	1.91%	0.43
4	22.974	23.404	23.840	1.86%	0.43
5	22.020	22.423	22.831	1.82%	0.42
6	21.111	21.488	21.870	1.78%	0.41
7	20.245	20.598	20.955	1.73%	0.41
8	19.419	19.749	20.082	1.69%	0.40
9	18.630	18.939	19.251	1.65%	0.39
10	17.878	18.167	18.459	1.60%	0.38
11	17.161	17.431	17.703	1.56%	0.38
12	16.476	16.728	16.982	1.52%	0.37
13	15.821	16.057	16.295	1.48%	0.36
14	15.197	15.417	15.639	1.44%	0.35
15	14.600	14.806	15.012	1.40%	0.34
16	14.030	14.222	14.414	1.36%	0.34
17	13.485	13.664	13.844	1.32%	0.33
18	12.964	13.131	13.298	1.28%	0.32
19	12.466	12.621	12.777	1.24%	0.31
20	11.990	12.134	12.280	1.20%	0.30
21	11.534	11.669	11.804	1.16%	0.30
22	11.099	11.224	11.349	1.12%	0.29
23	10.681	10.798	10.914	1.08%	0.28
24	10.282	10.390	10.498	1.04%	0.27
25	9.900	10.000	10.100	1.00%	0.26
26	9.527	9.627	9.727	1.04%	0.27
27	9.169	9.269	9.369	1.08%	0.29
28	8.828	8.927	9.026	1.11%	0.30
29	8.500	8.599	8.698	1.15%	0.31
30	8.186	8.285	8.383	1.19%	0.32
31	7.886	7.984	8.082	1.23%	0.33
32	7.598	7.695	7.792	1.26%	0.35
33	7.322	7.419	7.515	1.30%	0.36
34	7.058	7.153	7.249	1.34%	0.37
35	6.805	6.899	6.994	1.38%	0.38
36	6.562	6.655	6.749	1.41%	0.40
37	6.328	6.421	6.514	1.45%	0.41
38	6.105	6.196	6.288	1.48%	0.42
39	5.890	5.980	6.071	1.52%	0.43
40	5.684	5.773	5.863	1.56%	0.45
41	5.487	5.575	5.663	1.59%	0.46
42	5.297	5.384	5.471	1.63%	0.47
43	5.115	5.200	5.287	1.66%	0.49
44	4.940	5.024	5.109	1.70%	0.50
45	4.771	4.855	4.939	1.73%	0.51
46	4.610	4.692	4.775	1.77%	0.52
47	4.455	4.535	4.617	1.80%	0.54
48	4.305	4.385	4.465	1.84%	0.55
49	4.162	4.240	4.319	1.87%	0.57
50	4.024	4.101	4.179	1.90%	0.58
51	3.891	3.967	4.044	1.94%	0.59
52	3.763	3.838	3.914	1.97%	0.61
53	3.641	3.714	3.788	2.01%	0.62
54	3.522	3.595	3.668	2.04%	0.63
55	3.409	3.480	3.552	2.07%	0.65
56	3.299	3.369	3.440	2.10%	0.66
57	3.194	3.262	3.332	2.14%	0.68
58	3.092	3.160	3.228	2.17%	0.69
59	2.994	3.061	3.128	2.20%	0.70
60	2.900	2.965	3.031	2.24%	0.72
61	2.809	2.873	2.938	2.27%	0.73
62	2.722	2.785	2.849	2.30%	0.75
63	2.637	2.699	2.762	2.33%	0.76
64	2.556	2.617	2.679	2.36%	0.78
65	2.478	2.537	2.598	2.39%	0.79
66	2.402	2.461	2.520	2.43%	0.81
67	2.329	2.387	2.445	2.46%	0.82
68	2.259	2.315	2.373	2.49%	0.84
69	2.191	2.246	2.303	2.52%	0.85
70	2.125	2.180	2.236	2.55%	0.87
71	2.062	2.116	2.170	2.58%	0.88
72	2.001	2.054	2.107	2.61%	0.90
73	1.942	1.994	2.047	2.64%	0.91
74	1.885	1.936	1.988	2.67%	0.93
75	1.830	1.880	1.931	2.70%	0.94
76	1.777	1.826	1.876	2.73%	0.96
77	1.726	1.774	1.823	2.76%	0.98
78	1.677	1.724	1.772	2.79%	0.99
79	1.629	1.675	1.722	2.82%	1.01
80	1.582	1.628	1.674	2.85%	1.02
81	1.538	1.582	1.628	2.88%	1.04
82	1.494	1.538	1.583	2.91%	1.05
83	1.452	1.495	1.539	2.94%	1.07
84	1.412	1.454	1.497	2.97%	1.09
85	1.373	1.414	1.456	3.00%	1.10
86	1.335	1.375	1.417	3.02%	1.12
87	1.298	1.338	1.379	3.05%	1.14
88	1.263	1.302	1.342	3.08%	1.15
89	1.229	1.267	1.306	3.11%	1.17
90	1.195	1.233	1.272	3.14%	1.19
91	1.163	1.200	1.238	3.16%	1.20
92	1.132	1.168	1.206	3.19%	1.22
93	1.102	1.137	1.174	3.22%	1.24
94	1.073	1.108	1.143	3.25%	1.25
95	1.044	1.079	1.114	3.27%	1.27
96	1.017	1.051	1.085	3.30%	1.29
97	0.990	1.023	1.057	3.33%	1.31
98	0.965	0.997	1.030	3.36%	1.32
99	0.940	0.971	1.004	3.38%	1.34
100	0.915	0.947	0.979	3.41%	1.36
101	0.892	0.923	0.954	3.44%	1.38
102	0.869	0.899	0.930	3.46%	1.39
103	0.847	0.877	0.907	3.49%	1.41
104	0.826	0.855	0.885	3.51%	1.43
105	0.805	0.833	0.863	3.54%	1.45
106	0.785	0.813	0.842	3.57%	1.46
107	0.765	0.793	0.821	3.59%	1.48
108	0.746	0.773	0.801	3.62%	1.50
109	0.728	0.754	0.782	3.64%	1.52
110	0.710	0.736	0.763	3.67%	1.54
111	0.693	0.718	0.745	3.70%	1.55
112	0.676	0.701	0.727	3.72%	1.57
113	0.659	0.684	0.710	3.75%	1.59
114	0.643	0.668	0.693	3.77%	1.61
115	0.628	0.652	0.677	3.80%	1.63
116	0.613	0.637	0.661	3.82%	1.65
117	0.598	0.622	0.645	3.85%	1.67
118	0.584	0.607	0.630	3.87%	1.69
119	0.571	0.593	0.616	3.89%	1.70
120	0.557	0.579	0.602	3.92%	1.72
121	0.544	0.566	0.588	3.94%	1.74
122	0.532	0.553	0.575	3.97%	1.76
123	0.519	0.540	0.562	3.99%	1.78
124	0.507	0.528	0.549	4.02%	1.80
125	0.496	0.516	0.537	4.04%	1.82

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CMFA 103F3435 chip NTC thermistor from Nanjing Shiheng Elec designed for temperature sensing and control

NTC Thermistors

Product Attributes

Technical Specifications

Dimensions

Product Identification Breakdown (CMFA 103F3435)

Test Conditions

Inspection Equipment

Reliability Test Summary

Taping Information

Storage Conditions

Notes & Warnings

Recommended Soldering Technologies

Re-flowing Profile

Iron Soldering Profile

R-T Table (CMFA 103F3435)

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