Thin Film Temperature Measurement Type MF55 NTC Thermistor

Thin film temperature measurement type NTC thermistor is a high-precision temperature sensing element manufactured using thin film technology. It combines semiconductor micromachining technology and ceramic material characteristics, and has significant advantages in fast response and miniaturization scenarios. Its main characteristics and applications are as follows:

High-precision thin-film NTC thermistor MF55-100K for computer temperature measurement

MF55 Temperature Measurement Type 10K 100K Thin Film Package NTC Sensor

Polyimide Thin Film Ntc Thermistor

나. Core structure and process characteristics
‌Thin film substrate material‌
Adopt alumina ceramic substrate (standard thickness 0.15mm), and the surface is formed by ‌photolithography‌ to form a micron-level resistance layer and electrode to achieve high-precision graphics.

‌Semiconductor-level manufacturing‌
Batch deposit thermosensitive material thin film on the wafer, and control the shape and thickness of the resistor by etching technology, and the consistency is better than the traditional sintering ceramic process.

‌Ultra-thin package‌
The thickness is only 0.1-0.3mm, the heat capacity is extremely small (~와 같은 0603 size is 0.6×0.3mm), and the response speed is up to ‌milliseconds‌, which is suitable for narrow space and fast dynamic temperature measurement.

소형화:
Thin-film technology allows for the creation of very small thermostats, enabling their use in applications where space is a constraint.
로우 프로파일:
The thin-film construction results in a low profile design, making them suitable for applications where flat surfaces or limited depth are needed.
Fast Response Time:
Due to their small thermal mass, thin-film thermostors can respond quickly to temperature changes.
Flexibility and Conformability:
Some thin-film thermistors, like those using flexible polyimide substrates, can be adapted to various shapes and contours, making them suitable for applications with curved surfaces.
High Accuracy and Sensitivity:
Thin-film thermistors can be designed with high accuracy and sensitivity, allowing for precise temperature measurements.
Wide Operating Temperature Range:
Thin-film thermostors are available with a range of operating temperature, suitable for diverse applications.
Cost-Effectiveness:
어떤 경우에는, thin-film thermostors can offer a cost-effective solution compared to other temperature sensing technologies, according to some manufacturers.

II. Key performance and technical parameters

‌Parameters‌	Feature Description	Typical Value/Range
Resistance Range	25℃ nominal resistance (R25) covers a wide range and supports customized needs	5KΩ–500KΩ
Accuracy Level	Thin film process ensures resistance consistency, and tolerance is significantly better than traditional types	±0.5% ~ ±1%
B Value Range	High B value materials (3435K/3950K) provide excellent temperature sensitivity	3380K–4100K
작동 온도	Epoxy encapsulation type is suitable for civil temperature, and glass encapsulation has better high temperature resistance	-30℃~+120℃ (epoxy) -55℃~+150℃ (glass seal)
Thermal Time Constant	Ultra-low thermal capacitance achieves transient response	＜100ms

‌Model example‌:

‌MF55 series‌ (Shiheng Electronics): polyimide film package, R25=5K–500K, B 값 3435/3950, accuracy ±1%;

‌FT series‌ (Semitec): 0603/1005 SMD package, supports soldering and wire bonding;

III. Advantages compared with traditional NTC

‌Features‌	‌Thin film type‌	Traditional ceramic type
응답속도	Millisecond level (small heat capacity)	Second level (large heat capacity)
‌Dimensional accuracy‌	Photolithography process guarantees ±0.01mm tolerance	Sintering process tolerance＞±5%
‌High temperature stability‌	Alumina substrate has strong anti-aging properties	Long-term use is prone to drift
‌Miniaturization capability‌	Supports 0603 (0.6×0.3mm) package	Minimum size＞1×1mm

IV. Typical application scenarios

‌Medical electronics‌
Electronic thermometer (such as FT-ZM model): Use millisecond response to achieve rapid oral/axillary temperature measurement.

Endoscopic probe: Ultra-thin characteristics adapt to the space limitations of micro-catheters.

‌Consumer electronics‌
Mobile phone/laptop battery temperature monitoring: SMD type is directly integrated on PCB.
Printer fixing roller temperature measurement: High temperature resistant glass package to withstand >150℃ environment.
‌Industrial Sensing‌
Real-time monitoring of motor winding temperature: High-precision B value (3950케이) improves system protection reliability.

V. Selection considerations
‌ Lead connection method‌: Need to match the welding process (soldering/conductive glue/wire bonding).
‌ Long-term stability‌: Glass packaging is preferred for medical-grade applications to avoid epoxy resin aging drift.
‌ Thermal response matching‌: Dynamic temperature measurement scenarios need to verify whether the thermal time constant meets system requirements.

VI. Manufacturing Process:
Thin-film thermostors are typically manufactured using techniques such as:
Photolithography: Used to define the intricate patterns of the thermistor and electrodes.
Thin-film deposition: Thermistor material and electrodes are deposited onto a substrate.
Sputtering: A process for depositing thin films of various materials.
Etching: Used to define the desired shapes and patterns of the thermistor.
요약하면, thin-film NTC thermistors offer a versatile and compact temperature sensing solution suitable for a wide range of applications, particularly where space, 응답 시간, and accuracy are critical.