RD4019-01 | Ф40mm 16Ω/20mW Speaker Unit
This is a 40mm 16Ω/20mW speaker unit designed for earphones, featuring high SPL, low distortion, and proven reliability under temperature, humidity, vibration, and drop tests.
<---->
- Designed By: SpeakerDriver
- Product ID: RD4019-01
Technical
Specifications
| Specification | Details |
|---|---|
| Model | RD4019-01 |
| Driver Size | 40mm |
| Impedance | 16Ω ±15% |
| Rated Power | 20mW |
| Max Power | 30mW |
| Sound Pressure Level (SPL) | 119.6 ±1.5 dB @1kHz, 126mVrms input |
| Frequency Response | See figure; tested with 126mVrms input, 318 EAR |
| Resonance Frequency | ±20% Hz in Free Air |
| THD | ≤3% @50-8kHz, 1mW/318EAR |
| Operating Temperature | -10°C to +60°C |
| Storage Temperature | -10°C to +60°C |
| Polarity | “+” on speaker moves membrane forward with “+” DC input |
| Diaphragm Material | PET |
| Magnet | NdFeB |
| Frame | ABS |
| Voice Coil | Copper |
| PCB | Fiberglass + Green Oil |
| Tuning Paper | Included |
| Reliability Tests | Load 96h, Humidity 48h, Drop 1m 6 cycles, Temp Shock 6 cycles, High/Low Temp 96h, Salt Spray 24h, Terminal Strength 0.5kg 5s, Vibration 10-55Hz 2h per axis |
| Package | 40 pcs/tray, 25 trays/carton, 1000 pcs/carton, anti-static tray packaging |