RD4037-01 | 40mm 32Ω Speaker Unit
The RD4037-01 is a 40mm earphone speaker unit with 32Ω impedance, delivering high sound pressure level, reliability, and precision frequency response. Ideal for earphone applications.
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- Designed By: SpeakerDriver
- Product ID: RD4037-01
Technical
Specifications
| Specification | Details |
|---|---|
| Driver Size | 40mm |
| Impedance | 32Ω ±15% at 1kHz, 1mW input |
| Sound Pressure Level (SPL) | 131 ±2dB at 1kHz, 179mVrms input |
| Resonance Frequency | 115 ±20% Hz |
| Rated Power | 20mW |
| Max Power | 30mW |
| Total Harmonic Distortion (THD) | ≤3% at 50Hz-8kHz / 1mW |
| Polarity | '+' terminal moves membrane forward with DC '+' |
| Operating Temperature | -10°C to +65°C |
| Storage Temperature | -10°C to +65°C |
| Materials | Frame: ABS, Diaphragm: PU+PEEK+LCP, Yoke: SPCC, Voice Coil: Copper-Clad Aluminum, Magnet: NdFeB, Tuning Paper, PCB: SPCC |
| Reliability Tests | Load, Humidity, Drop, Temp Cycling, High/Low Temp, Salt Spray, Tensile, Vibration |
| Packaging | 40 pcs/tray, 13 trays/carton, total 520 pcs/carton |