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Product Details:
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| Product Name: | Precision Ntc Thermistor Mf5a Series | Shape: | Axial Leaded |
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| Tolerance: | 2mw/°C | B Value At 25/50°C: | 3470,3435,3950,4050,4250 |
| Resistance Value: | 2K-200K | Thermal Time Constant: | 20S |
| B-Value 25/50: | 3100K-4750K ±1% | Operating Temperature: | -55°C To +125°C |
| Rated Power: | ≤50mW | ||
| Highlight: | 3435 Epoxy Encapsulated CWF Temperature Sensor,5k Epoxy Encapsulated CWF Temperature Sensor,10k Epoxy Encapsulated CWF Temperature Sensor |
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Epoxy encapsulated temperature sensor NTC thermistor 5K 10K 50K 100K 3435 3950 PVC sensor with connection terminals
I choose epoxy resin coated NTC thermistor 5k 10k 50k 3950 3435 1% 5% temperature probe chip
Modifications can be made to existing standard product packages, such as adding connectors or changing wire size or length, as well as providing special resistance-temperature (R-T) curves, R-T curve matching, and custom lead molding and bending to discrete thermistors. Additionally, the following options and services are available.
Complete custom sensor package including moisture-resistant design
Customized resistance-temperature (R-T) characteristics
Professional resistor tolerance or temperature accuracy within specified temperature range
Sensing element design for optimal long-term stability
Rapid prototyping and quick turnaround of concept parts, including 3D printed parts
Prototype units using prototyping tools
Reliability/validation testing options
Fully engineered, production-ready sensors and tools
II Size Of The Epoxy Coated NTC Thermistor 5k 10k 50k Temperature Probe Chip (Unit:mm)
III Material Lists Of The Epoxy Coated NTC Thermistor 5k 10k 50k 3435 3950 Temperature Probe Chip
| NO | Material Name | Item/PN |
| 2-1. | Element | R25=10KΩ±1% B25/50=3950±1% |
| 2-2. | Coating | Epoxy Resin (Black) |
| 2-3. | Lead Wire |
UL2651# 28AWG×2C 5*0.20mm 105℃ 300V (Yellow) Diameter:1.4±0.05 * 2.9±0.1mm Meet SAEJ-1128
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| NO | Item | Sign | Test Conditions | Min. | Normal value | Max. | Unit |
| 4-1. | Resistance at 25℃ | R25 |
Ta=25±0.05℃ PT≦0.1mw |
9..9 | 10.0 | 10.1 | kΩ |
| 4-2. | B Value | B25/50 | 3910.5 | 3950 | 3989.5 | k | |
| 4-3. | Dissipation factor | σ |
Ta=25±0.5℃ In still air |
≧2 | mw/℃ | ||
| 4-4. | Time constant | τ |
Ta=25±0.5℃ In still air |
≦7 | sec | ||
| 4-5. | Operating temp.range | / | / | -20 | / | +125 | ℃ |
| 4-6 | Insulation resistance | / | 100V DC | 100 | / | / | MΩ |
| 4-7. | Withstand voltage test | / | 200V AC | 5 | / | / | Sec |
V Reliability Of The Epoxy Coated NTC Thermistor 30K 3950 Temperature Probe Chip
| NO | Item | Technical requirements | Test conditions and method |
| 5-1. | High temp. Test |
DR/R25£±3%
DB/B£±3%
No change with withstand voltage, Insalution performance. Appearance without damage. |
100±5℃,power on 500±24 hrs,DC0.2mA |
| 5-2. | Low temp. tes | -20±5℃,power on 500±24 hrs,DC0.2mA | |
| 5-3. | Endure moisture test | Store in environment 55±2℃,90%-95%RH for 500±24 hrs | |
| 5-4. | Temp. cycle test | –20℃×30min→Room temp.×10min→ in 100℃ water×30min→Room temp.×10min 10 cycles | |
| 5-5 | Load electrify test | Power on DC1mA, 500hrs in room temp. and humid. | |
| 5-6 | Drop test | Free fall into concrete floor from height 1M ,10 cycle. | |
| 5-7 | Vibration test | Frequency range:10～55HZ Total amplitude 1.52mm 1 cycle 1 min ,direction and time X,Y,Z axs 2Hr each. | |
| 5-8 | Bending test | Bend 180°binding site wire and epoxy resin.Back and forth 10 times | |
| 5-9 | Tensile tests | Put 2 kg of force lasts 1 min |
| Dongguan Linkun Electronic Technology Co., Ltd. | ||||||
| Main technical parameters of sensor series thermistor: | ||||||
| Model | Rated resistance value (R25) | B value | Operating temperature | Dissipation coefficient | Thermal time constant | |
| Resistance value (KΩ) | Allowable deviation (±%) | Nominal value (K) | (mW/℃) | (S) | ||
| CWF-102-3435 | 1 | ±1% ±2% ±3% ±5% | 3435 | -40℃ ～ ＋120℃ | ≥3.0 in still air | ≤6.0 in still air |
| CWF-202-3435 | 2 | 3435 | ||||
| CWF-2.252-3950 | 2.252 | 3950 | ||||
| CWF-472-3950 | 4.7 | 3950 | ||||
| CWF-502-3470 | 5 | 3470 | ||||
| CWF-502-3950 | 5 | 3950 | ||||
| CWF-682-3950 | 6.8 | 3950 | ||||
| CWF-103-3435 | 10 | 3435 | ||||
| CWF-103-3470 | 10 | 3470 | ||||
| CWF-103-3600 | 10 | 3600 | ||||
| CWF-103-3380 | 10 | 3380 | ||||
| CWF-103-3977 | 10 | 3977 | ||||
| CWF-103-4100 | 10 | 4100 | ||||
| CWF-153-3950 | 15 | 3950 | ||||
| CWF-203-3950 | 20 | 3950 | ||||
| CWF-233-3950 | 23 | 3950 | ||||
| CWF-303-3950 | 30 | 3950 | ||||
| CWF-333-3977 | 33 | 3977 | ||||
| CWF-403-3950 | 40 | 3950 | ||||
| CWF-473-4013 | 47 | 4013 | ||||
| CWF-503-3977 | 50 | 3977 | ||||
| CWF-503-3990 | 50 | 3990 | ||||
| CWF-503-4050 | 50 | 4050 | ||||
| CWF-104-3950 | 100 | 3950 | ||||
| CWF-104-3990 | 100 | 3990 | ||||
| CWF-104-4200 | 100 | 4200 | ||||
| CWF-204-3892 | 200 | 3892 | ||||
| CWF-204-3917 | 200 | 3917 | ||||
Sensing element-NTC thermistor used
MF5A NTC Thermistor Description:
MF5A-503F R25=(50K) B25/50=3950±1% High-precision small-volume negative temperature coefficient thermistor powder preparation to NTC chip coating full-set manufacturer Dongguan Linkun Electronic Technology Co., Ltd.
NTC (Negative Temperature Coefficient) thermistor is a resistor with high temperature coefficient and is also a semiconductor element that is extremely sensitive to temperature. It is made of metal oxides such as manganese, cobalt, nickel, and copper, and is manufactured by ceramic technology. It is formed, because its conduction method is completely similar to semiconductor materials such as germanium and silicon. When the temperature is low, the number of carriers (electrons and holes) in these oxide materials is small, so the resistance value is high. As the temperature rises, the carrier As the number of carriers increases, the resistance value decreases.
MF5A small leather wire thermistor features:
• NTC temperature sensor is small in size and fast in response
• NTC leads are insulated, and the wires are soft and can be bent moderately
•Thermistor resistance value B has high precision and accurate temperature measurement
• NTC chip products are lead-free and comply with the EU ROHS directive
Application scope of thermistor and NTC temperature sensor:
• , vacuum gauge, temperature and humidity gauge, beauty equipment, power supply, electronic toys
• Cell phone batteries, NB batteries, electric vehicle batteries, medical instruments for gas analyzers
• Solar water heaters, refrigerators, cars, copiers, fax machines
• Electronic thermometer, electronic stove, electric cooker, electric thermos
• Clothes dryer, electric iron, gas water heater, electric blanket, air conditioner
• 3C home appliances, petroleum heaters, microwave ovens
MF5A small leather wire thermistor series main technical parameters:
| Model | Rated resistance value(R25) | B value |
Work temperature |
Dissipation coefficient(mW/℃) |
thermal time constant (S) |
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| Resistance(KΩ) | Allowable deviation(± %) |
nominal value (K) |
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| MF5A-102-3435 | 1 |
±1% ±2% ±3% ±5% |
3435 |
-40℃ ~ +120℃ |
≥3.0 静止空气中 |
≤6 静止空气中 |
| MF5A-202-3435 | 2 | 3435 | ||||
| MF5A-2.252-3950 | 2.252 | 3950 | ||||
| MF5A-472-3950 | 4.7 | 3950 | ||||
| MF5A-502-3470 | 5 | 3470 | ||||
| MF5A-502-3950 | 5 | 3950 | ||||
| MF5A-682-3950 | 6.8 | 3950 | ||||
| MF5A-103-3435 | 10 | 3435 | ||||
| MF5A-103-3470 | 10 | 3470 | ||||
| MF5A-103-3600 | 10 | 3600 | ||||
| MF5A-103-3380 | 10 | 3380 | ||||
| MF5A-103-3977 | 10 | 3977 | ||||
| MF5A-103-4100 | 10 | 4100 | ||||
| MF5A-153-3950 | 15 | 3950 | ||||
| MF5A-203-3950 | 20 | 3950 | ||||
| MF5A-233-3950 | 23 | 3950 | ||||
| MF5A-303-3950 | 30 | 3950 | ||||
| MF5A-333-3977 | 33 | 3977 | ||||
| MF5A-40.27-3950 | 40.27 | 3950 | ||||
| MF5A-473-4013 | 47 | 3950 | ||||
| MF5A-503-3977 | 50 | 3977 | ||||
| MF5A-503-3990 | 50 | 3990 | ||||
| MF5A-503-4050 | 50 | 4050 | ||||
| MF5A-104-3950 | 100 | 3950 | ||||
| MF5A-104-3990 | 100 | 3990 | ||||
| MF5A-104-4200 | 100 | 4200 | ||||
| MF5A-204-3892 | 200 | 3892 | ||||
| MF5A-204-3917 | 200 | 3917 | ||||
Precautions for the use of small leather wire thermistors:
Be sure to use within the specified temperature range to avoid deterioration of the material and characteristics.
Thermistors are designed based on transformers used in general (indoors at room temperature, humidity, and pressure). Therefore, if they are used in the following environments, they will fail (or burn out) when the characteristics are worst. ), please do not use in such an environment.
① Corrosive reducing gases (Cl2, HXS, NH3, SOX, NOX, etc.).
② Among volatile and flammable gases.
③ Places with a lot of dust.
④ A place where pressure has been reduced or increased.
⑤ Places in direct contact with water or places that are prone to condensation due to high humidity.
⑥ Place in salt water, oil, liquid medicine, organic solution.
⑦ Places with excessive vibration.
⑧ Other places similar to ①—⑦.
A:(Tin. nickle Cu or Cp wire)
Normal dimension table
| Code | Dmax | L1max | L2min |
d ±0.05 |
F ±0.5 |
| A1 | 2.5 | 4 | 25 | 0.3 | 1.7 |
| A2 | 3 | 4.5 | 25 | 0.45 | 2.2 |
B:(Enamelled cu wire)
Normal dimension table
| Code | Dmax | L1max | L2min | L3 ±1 | d±0.05 |
| B1 | 2 | 3.5 | by user determine | 3 | 0.2 |
| B2 | 3 | 4 | by user determine | 3 | 0.3 |
C:(High-temperature wire)
Normal dimension table
| Code | Dmax | L1max | L2min | L3 ±1 | Wire AWG |
| C1 | 3 | 7.5 | by user determine | 5 | 30# |
| C2 | 4 | 7.5 | by user determine | 5 | 28# |
D:(Normal temperature wire)
Normal dimension table
| Code | Dmax | L1max | L2min | L3 ±1 | Wire AWG |
| D1 | 3 | 7.5 | by user determine | 5 | 30# |
| D2 | 4 | 7.5 | by user determine | 5 | 28# |
E:Lead and head are all special specification)
Normal dimension table
| Code | Dmax | L1max | L2min | L3 ±1 | Wire AWG |
| E1 | by user determine | by user determine | by user determine | 5 | by user determine |
| E2 | by user determine | by user determine | by user determine | 5 | by user determine |
DE:(Cp Lead Coated with epoxy resin)
Normal dimension table
| Code | Dmax | L1max | L21max | L3 | d±0.05 | F±0.05 |
| DE1 | 3 | 6.0 | 55 | By user determine | 0.3 | / |
| DE2 | 4 | 7.5 | 35 | by user determine | 0.45 | / |
F:(Tinned steel wire)
Normal dimension table
| Code | Dmax | L1max | L2±1.5 | d±0.01 | f±0.05 | T max |
| F | 3.8 | 9.5 | 17 | 0.6 | 2.5 | 3.5 |
Small leather wire thermistor abnormal handling:
When the thermistor is abnormal, short-circuit current will pass through, and there may be abnormal smell, abnormal sound, smoke, etc., please be sure to connect the thermistor in series with the current protection as another protection device.
When the thermistor is working, depending on the site (environment) conditions, it may exceed 110°C. Please confirm whether it affects surrounding parts or materials.
Abnormalities in thermistors not only affect parts or materials and cause them to deteriorate, but gas emitted from parts or materials often becomes the cause of component deterioration.
NTC Type Thermistor is a widely used temperature measuring thermistor which is specially designed for temperature measurement and compensation. It is usually made of a MF52 single-ended glass sealed thermistor or MF11 temperature compensated thermistor. It is featured by high insulation resistance (≥100MΩ), high precision (tolerance of +/-1%) and wide range of B-value (25/50: 3950±1%).
The NTC Type Thermistor is mainly used in temperature measurement, compensation and control. It is widely used in a variety of applications such as computer, consumer electronics, medical equipment, automotive, aviation and other industries. It can also be used in more demanding applications like food, aerospace and military applications. It is an ideal choice for temperature compensation and measurement.
NTC Type Thermistor has been extensively tested and certified to guarantee its superior quality. It is also well-known for its long-term stability, reliability and durability. Therefore, it is a great choice for temperature measurement and compensation.
Workshop of high quality and high performance NTC Thermistor
We have the unique process and leader core technology with proprietary intellectual property rights of ceramic powder equipment,made of chips,high performance NTC Automatic batch production.
We have more than 12 series of high performance NTC thermistors automatic production line,products have the advantages of large production,high quality,good coherence,high reliability,besides it can be made of many kinds of NTC temperature sensors,it also can be supplied to other factories of NTC sensors,and exported in large quantities to overseas.
Nancy Huang
Email: huangju@lk-ptc.com.
Tel/Whatsapp: +86 13423305709
Wechat: LinKun＿Nancy2013
QQ: 1078049901
Contact Person: Ms. Huang
Tel: 13423305709
