The YD-SF08 Series is a high-sensitivity flexible piezoelectric film sensor developed by Suzhou Leanstar Electronics Technology Co., Ltd. Leveraging years of expertise in flexible sensors, it generates electrical signals when force is applied or the sensor is bent. These signals are processed through amplifiers and corresponding processors to provide the desired output.
Available in lengths of 230mm, 350mm, 400mm, 600mm, and 700mm.
| Model | A（mm） | Sensing area（L×W）（mm） | Width（mm） | Thickness（mm） | Pin pitch(mm) |
| YD-SF08230 | 230 | 216*3 | 8.15±1 | 0.35±0.05 | 2.54 |
| YD-SF08350 | 350 | 336*3 | |||
| YD-SF08400 | 400 | 386*3 | |||
| YD-SF08600 | 600 | 586*3 | |||
| YD-SF08700 | 700 | 686*3 | |||
| Tolerance | All A dimensions: A ±5mm | ||||
| All sensitive area dimensions: Sensitive area length L ±5mm; Sensitive area width W ±0.1mm | |||||
Ultra-thin and lightweight, with high sensitivity
Low acoustic impedance, high signal stability
Wide frequency response, excellent dynamic response
Excellent flexibility, strong biocompatibility
Resistant to chemical corrosion, environmentally friendly
| Model | YD-SF08230 | YD-SF08350 | YD-SF08400 | YD-SF08600 | YD-SF08700 |
| Capacitance | （0.8~2.0）nF | （1.5~3.5）nF | （1.5~3.5）nF | （2.5~4.5）nF | （3.0~5.0）nF |
| Piezoelectric coefficient d33 | （20~30）pC/N | ||||
| Operation temperature | （-20~60）℃ | ||||
| Frequency band | ＜100MHz | ||||
| Bending times | ＞1 million times | ||||
Reference Circuit 1: Charge Amplifier Circuit
Reference Circuit 2: Voltage Amplifier
When the amplifier's open-loop gain K, input resistance Ri and feedback resistance Rf
The output voltage Vout is then proportional to the input charge Qin
where Cf is the feedback capacitance.
The charge amplifier ensures that the output voltage remains independent of cable capacitance, making it ideal for applications requiring long cable connections between the piezoelectric film sensor and the electronics. It also significantly reduces charge leakage caused by parasitic capacitance around the sensor.
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