유니슨음향(주)--Micro Speakers
U5008BC2

SPECIFICATION

Dimension Diameter 50mm / Thickness 8.7mm.
Impedance. 8Ω±10% at 1.0V 1 KHz.
Output S.P.L. 85 dB/W (1m) ± 3 dB at 0.8, 1.0, 1.2, 1.5 KHz. (Average figures).
Resonant frequency. 470 Hz ± 20%  at 1.0 V.
Effective frequency band. Fo ~ 4KHz.
Power. Nor. 0.3 W. / Max. 0.5 W.
Distortion. Less than 5% at 1. KHz 0.3 W.
Magnet. 12.5mm × 1.5mm. (Nd-Fe-B)
Flux density. 6,600 Gauss (SURFACE).
Weight. 12.5g ± 1.0g.
Polarity. The left hand terminal should be MINUS(-).
Terminal strength. 1.0 Kg for 30 sec.
Operation test. Must be normal with program source 0.3 W.
Buzz & rattle, etc. Not be audible at 1.55  V, sine wave, Fo ~ 4 KHz.
Load test. (White) noise 0.3 W, 96 Hrs.
High temperature test. +60℃ ± 3 ℃ 96 Hrs.
Low temperature test. -20℃ ± 3 ℃ 96 Hrs.
Operating temp. range. High + 60℃ ± 3℃ Low -20℃ ± 3℃
Humidity test. +40℃ ± 3℃ 95% 96 Hrs.
FREQUENCY CURVE.

X : 1.0000kHz    Y : 84.58dB     ZA : Live Curve

Graph, XY Axes A Grid : Fine X Axis : Log
X Range : 2dec X Min : 100.0Hz Y Axis : dB
Y Range : 50.00dB Y Max : 100.0dB Y Unit : Pa/V
dB Ref : 20.0 Pa/V Axis Ratio : Standard Page 1, Graph
DIMENSIONS