유니슨음향(주)--Micro Speakers
U2008S2

SPECIFICATION

Dimension Diameter 20mm / Thickness 3.0mm.
Impedance. 8±10% at 1.0V 1 KHz.
Output S.P.L. 82 dB/W (1m) ± 3 dB at 0.8, 1.0, 1.2, 1.5 KHz. (Average figures).
Resonant frequency. 900 Hz ± 15%  at 1.0 V.
Effective frequency band. Fo ~ 4.5 KHz.
Power. Nor. 0.5 W. / Max. 1.0 W.
Distortion. Less than 5% at 1. KHz 0.5 W.
Magnet. 8.0mm × 1.0mm. (Nd-Fe-B)
Flux density. 4,500 Gauss (SURFACE).
Weight. 2.3g ± 0.5g.
Polarity. The left hand terminal should be MINUS(-).
Terminal strength. 1.0 Kg for 30 sec.
Operation test. Must be normal with program source 0.5 W.
Buzz & rattle, etc. Not be audible at 2.0  V, sine wave, Fo ~ 4.5 KHz.
Load test. (White) noise 0.5 W, 96 Hrs.
High temperature test. +60℃ ± 3 ℃ 96 Hrs.
Low temperature test. -20℃ ± 3 ℃ 96 Hrs.
Operating temp. range. High + 60℃ ± 30℃ Low -20℃ ± 3℃
Humidity test. +40℃ ± 3℃ 95% 96 Hrs.
FREQUENCY CURVE

X : 996.48Hz     Y : 85.57dB     ZA : Live Curve

Graph, XY Axes A Grid : Fine X Axis : Log
X Range : 2dec X Min : 200.0Hz 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
DIMENSION