RD1223-01(NC) | 12mm 32Ω 5mW Earphone Speaker Driver Unit

Size
Φ12.0mm ±0.1mm

Price
0.26$

MOQ
5000 Units

Leadtime
18 days

Technical
Specifications

Specification	Details
Model	RD1223-01(NC)
Driver Size	12mm Round
Net Weight	Approx 0.8g
Impedance	32Ω ±15% (1kHz, 1mW)
Sensitivity (SPL)	121.5 ±3dB (1kHz, 179mVrms, 711 EAR)
Rated Power	5mW
Maximum Power	10mW
Resonance Frequency	260Hz ±20% (Free Air)
Frequency Response	Full audio range (See curve)
THD	≤3% (50Hz–8kHz, 1mW, 711 EAR)
Diaphragm Material	PU + Paper Composite
Voice Coil	SHTW Copper
Magnet	NdFeB (Blue Zinc Cr3+)
Plate	SPCC (Color Zinc)
Frame	PPA (Black)
Cover	SUS (Natural)
Gain Mesh	Polyester White + Black Glue
Insulation Resistance	>1MΩ at 50V DC
Polarity	Positive terminal input pushes diaphragm forward
Operating Temperature	-10°C to +65°C
Storage Temperature	-10°C to +65°C
Reliability Tests
Load Test	0.4V Pink Noise – 96h
Humidity Test	40°C, 90–95% RH, 48h
Drop Test	1m Height, 6 Cycles
Temperature Cycle	25→65→25→-30→25°C (6 cycles)
High Temperature	+65°C for 48h
Low Temperature	-20°C for 48h
Salt Spray	5% Salt Solution, 35°C, 24h
Vibration	10–55Hz, ≥3.5mm, 2h each direction