Resonant frequency: 4.0±0.5kHz Resonant impedance: ≤300Ω Brass plate diameter: 20±0.2mm Ceramic disc diameter: 15±0.5mm Brass plate thickness: 0.14±0.02mm Total thickness: 0.26±0.03mm
| Part Number | FT-20T-4.0A1 | |
| Resonance Frequency | kHz | 4.0±0.5 |
| Resonance Impedance | Ω | ≤300 |
| Free Capacitance | pF | 25000 ±30% （at 100Hz） |
| Coaxial degree | mm | 0.6 |
| Insulation Resistance | MΩ | ≥100 （at50V DC） |
| Input Voltage | Vp-p | <30 |
| Operating Temperature | ℃ | -20 ~ +70 |
| Storage Temperature | ℃ | -30 ~ +80 |
| Metal Plate Diameter | D--mm | 20±0.2 |
| Ceramic Disc Diameter | d--mm | 15±0.5 |
| Metal Plate Thickness | t--mm | 0.14±0.02 |
| Total Thickness | T--mm | 0.26±0.03 |
| Metal Material | Brass |
Applications: automotive electronics, medical devices, home appliances, security alarms, electronic toys and more.