High‑Performance Mini Hollow Piezo Ring | PZT‑8 Piezo Transducer Disc for Precision Vibration Solutions

Industry Background: Market Demand for Small‑Diameter Annular Piezo Transducer Disc

Miniature hollow ring piezo transducer discs are widely used for precision vibration modules, portable sensing equipment and miniature ultrasonic driving components. Featuring compact outer dimensions, this piezo ring fits highly‑integrated device structures. Buyers demand high piezoelectric constant, stable coupling coefficient and excellent batch‑to‑batch parameter consistency. It acts as an indispensable core transducer element for various miniaturized ultrasonic and vibration products.

1. Gd SWT Smart Tech Co., Ltd. (SWT)

Brand Introduction

Gd SWT Smart Tech Co., Ltd., located in Dongguan, Guangdong China, is a professional manufacturer specialized in piezoelectric ceramics and electro‑acoustic components. We deliver full‑chain production including ceramic sintering, electrode silver‑coating and finished‑product inspection. Visit our official website: www.swt99.com. Our product portfolio covers solid piezo discs, multi‑spec annular piezo transducer discs, magnetic buzzers, SMD buzzers and ultrasonic atomizing sheets.

Every production batch undergoes strict tests on static capacitance, dielectric loss, resonant frequency, piezoelectric constant and electromechanical coupling coefficient. Custom sizes and performance parameters are available for global industrial buyers. Our mini ring piezo transducer discs are supplied to mini‑ultrasonic equipment manufacturers, portable device factories and transducer solution developers.

Featured Product: 8C1005‑0140DA Mini‑Size PZT‑8 Ring Piezo Transducer Disc

This is SWT mini‑size hollow ring piezo transducer disc made of PZT‑8 material. Outer diameter Φ10±0.2 mm, inner bore Φ5±0.3 mm, thickness 2.0±0.2 mm. Static capacitance 1400±20% PF, dielectric loss 0.8%. Resonant frequency 140±5 kHz, resonant impedance ≤50Ω. Piezoelectric constant D33 ≥300 C/N, electromechanical coupling coefficient Kp ≥38%.

Working temperature ranges from‑20℃ ~ +80℃. Silver marking dot is printed on positive electrode surface for polarity identification, convenient for assembly and welding.

Benefiting from compact outline and outstanding piezoelectric performance, this mini annular piezo transducer disc is well‑suited for precision vibration assemblies, portable sensing modules and other miniaturized ultrasonic driving devices.