加工定制是 品牌江陰福鼎 型號(hào)fds-130047r8w0.5 種類紙盆式(直接輻射) 用途筆記本 外形圓形 組成方式單紙盆 振膜材料非紙質(zhì) 磁路形式內(nèi)磁式 頻率特性高音（高頻） 額定功率0.5w 額定阻抗8ω 頻率響應(yīng)0.95khz 靈敏度88db/w 性噪比88db 是否跨境貨源否 展開(kāi) 常州揚(yáng)聲器fds-130047r8w0.5超薄喇叭福鼎電子元器件廠家直供 點(diǎn)我去除廣告 descrtption 常州fds-130047r8w0.5揚(yáng)聲器超薄喇叭發(fā)音福鼎廠家直銷(xiāo) 描述 1.characteristics 1.1electrical and mechanical characteristics item specifications 01 type dynamic speaker 02 dimension external diameter13 mm 03 rated input power 0.5w (long time) 04 max. input power 1.0w for 1 minute 05 impedance 8 ohm ± 15% at2000hz. 06 resonance frequency (fo) 950hz ± 20% at fo, 1v 07 sensitivity (s.p.l.) 88db (0.1w / 0.1m) ± 3 db atave1.0k,1.2k,1.5k, 2.0khz. 08 frequency range fo –20khz 09 total harmonics distortion max 8 % at 1 khz,0.5w. 10 voice coil diameter7.4mm 11 magnet rare earth permanent (nd-fe-b) magnet φ6.9 x1.2mm 12 weight 0.65g ± 0.3g 13 appearance should not exist any obstacle to be harmful to normal operation; damages, cracks, rusts and distortions, etc. 14 operation test must be normal at program source – 0.5w 15 buzz, rattle, etc. should not be audible at2.0v sine wave between fo to 20khz 16 polarity when positive voltage is applied to the terminal marked (+), diaphragm should move to the front. 17 terminal strength capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection. 18 temperature operating temperature: -20℃ to +60℃ storage temperature: -30℃ to +70℃ 2.2. measuring method test condition a.standard temperature : 15 ~ 35℃ relative humidity : 25% ~ 85%, atmospheric pressure : 860mbar to 1060mbar. atmospheric pressure : 860mbar to 1060mbar. b.basic temperature : 20±3℃ relative humidity : 60% ~ 70%, atmospheric pressure : 860mbar to 1060mbar c.standard test fixture 1.input power :0.5w (2.0v ) 2.zero level : -db 3.mode : speaker 4.potentiometer range : 50db 5.sweep time : 0.5sec 3.frequencyresponse curve 4.dimension 5. reliability test items. specifications 01 high temp. test keep 96 hours at +70℃±3℃ and leave 3 hours in normal temperature and then check 02 low temp. test keep 96 hours at -30℃±3℃ and leave 3 hours in normal temperature and then check 03 humidity test keep 96 hours at + 60℃±3℃ relative humidity 95% and leave 3 hours in normal temperature and then checked. 04 temp./humidity cycle the part shall be subjected 5 cycles. one cycle shall be 12 hours and consist of; 05 thermal cycle test. low temperature: -30℃±3℃, temperature:+70℃±3℃, cycle: 1 hour/cycle each, and then keep 5 cycles in a room. 06 vibration 10~200~10hz sin-wave sweep 15min. 5g(constant) x,y, z 3 direction. 2 hours each, total 6 hours. 07 fix drop test fix on jig. then drop from 152cm height to the concrete floor x, y, z 6 direction. 5 times each, total 30 times. 08 free drop test free drop from 100cm height to the concrete floor x, y, z 6 direction. 1 times each, total 6 times. 09 rated power test rated power white noise is applied for 96 hours 10 max power test max power 1 min on – 2 min off 10 cycles. 11 terminal strength test capable of withstand 1kg load for 30 seconds without resulting in any damage or rejection. criterion: after these test , the change of s.p.l shall be within ±3 db . soldering condition recommend using constant branding iron in 30w, and in temperature range 350°c. soldering time not over2 seconds.
