Ultra thin flexible temperature sensor

Ultra thin flexible temperature sensor: the "invisible thermometer" for consumer electronics and medical wearables

1、 Consumer Electronics: How Flexible Sensors Resolve the Contradiction between Space and Experience? ​

1.1 TWS earphones: a "temperature sentinel" in narrow spaces
Pain points: The earphone cavity is only 5-8cm ³, traditional sensors take up space, and are easy to cover;
Solution: 3x4x0.06mm B-class sensors+tin plated solder pads (directly attached to PCB), embedded next to the charging contacts;
Effect: Real time monitoring of charging temperature (0 ° C~50 ° C), over temperature alarm response time<0.5 seconds, avoiding the risk of bulging.
1.2 Smart wristband: "Fit password" for curved wristbands
Pain points: Wristband curvature of 15 °~30 °, rigid sensor prone to curling edges and data distortion;
Solution: A 7x5x0.06mm A-class sensor (can be bent with the wrist strap), attached with medical adhesive;
Effect: In sports scenarios (running, swimming), the temperature measurement error is ± 0.5 ° C, and the user's perception of battery life is improved (avoiding overheating and frequency reduction).

2、 Medical wearables: the "safety and comfort" dual insurance of flexible sensors

2.1 Postoperative wound patch: 24-hour 'invisible monitoring'
Pain point: Traditional sensor hard shell friction wound, poor patient compliance;
Solution: 3x4x0.06mm A-class sensors (rounded edges)+breathable medical adhesive, attached 2cm around the wound;
Effect: Continuous monitoring of wound temperature (35 ° C~38 ° C), automatic alarm for abnormal temperature rise (>38.5 ° C), and an infection warning accuracy rate of 95%.
2.2 Baby temperature sticker: soft and non irritating, mothers can rest assured
Pain points: Infants have delicate skin, and rigid sensors can easily cause rash;
Solution: Customized 2x3mm A-class sensors (thickness 0.05mm)+food grade silicone packaging;
Case: A certain mother and baby brand used this solution to make a "diaper style temperature sticker", which sold over 100000 pieces within 3 months of its launch, with a repurchase rate of 80%.

3、 Technical advantage: Why can flexible films be "invisible"? ​

3.1 Ultra thin (0.06mm)+Flexible: Suitable for any curved surface
Compared to traditional rigid sensors (thickness>0.5mm), our thin film sensor has a bending radius of<5mm, making it easy to fit the curved surface of the watch, headphone cavity, and skin wrinkles.
3.2 TCR 6444 ppm/° C: Temperature resistance linearity "textbook level"
The TCR (temperature coefficient) of 6444 ppm/° C means that a temperature change of 1 ° C results in an accurate change of 0.6444 Ω in resistance value (at a base resistance of 100 Ω), with a linearity error of<0.1%, far better than the industry average of 6500 ppm/° C (linearity error of 0.3%).
3.3 Tin plated solder pads: oxidation resistant+easy to solder, production friendly
The solder pads are coated with "tin plating+anti-oxidation coating" and placed in an environment of 85 ° C/85% humidity for 1000 hours, with a contact resistance change of<0.01 Ω, suitable for mass SMT mounting of consumer electronics.

4、 Conclusion: The future of flexible sensors is' invisible but inseparable '

From the "silent protection" of TWS earphones to the "invisible monitoring" of medical patches, the ultra-thin flexible temperature sensor is redefining the form of "temperature measurement" - it is not eye-catching, but makes the experience more extreme; It is not heavy, but it makes safety more reliable.

Q: Can sensors pass RoHS certification? ​
A: Sure - All materials comply with RoHS 2.0 and provide SGS testing report.
Q: How long can medical patches last? ​
A: The A-class sensor has been working continuously for 5000 hours (≈ 208 days), and the error is still ≤± 0.8 ° C.
Q: What is the mass production yield rate of consumer electronics? ​
A: ≥ 99.5% (industry average 98%), supporting roll to roll automated mounting.

Click the consultation button and tell us your "product type (headphones/wristbands/medical patches)+temperature measurement range" to receive a free "Flexible Sensor Mass Production Adaptation List"!

IEEE 1625-2017 Portable Electronic Device Battery Safety Standard;
A user research report on a certain mother and baby brand's "Baby Temperature Patch";
Medical Device Association's "Guidelines for Wearable Health Monitoring Technology".

Xi'an Tongzida Technology Co., Ltd. is a leading manufacturer and supplier of advanced thermistor technology, dedicated to providing high-performance temperature sensors for demanding industrial applications. We have comprehensive expertise in microsensor manufacturing technology, special packaging technology, and multi-sensor integration methods to ensure excellent performance and reliability of thermistors. As a trusted supplier of precision temperature measurement solutions, we offer a complete thermistor system, including core sensitive chips, testing systems, and analysis software. Please contact our technical experts sales11@xatzd.com Discuss your specific thermistor requirements and learn how our advanced resistor temperature optimization and manufacturing capabilities can improve the performance and reliability of your temperature measurement system