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一：MT-UB2578P-402
规格：Φ25*7.8mm
指向性：单指向
驻极方式：背极式
灵敏度：-42～-52dB
工作电压：1.0～10V
工作电流：Max.0.5mA
频响范围：50Hz～20KHz
信噪比：大于66dB
产品具有高保真，指向性强，抗干扰等特性，主要应用于K歌话筒、DV话筒、高级会议系统。
二：
二：
三：尺寸图
四：RELIABILITY
|
Item |
Test conditions |
Evaluation standard |
|
|
1
|
Hi-Temp. Test |
The microphone unit must be subjected to +80℃ for200Hours and exposed to room temperature for 3 Hours. |
After any following tests, the sensitivity of the microphone unit shall not change more than±3dB from initial value and shall keep their initial operation and appearance. |
|
2
|
Low-Temp. Test |
The microphone unit must be subjected to -40℃ for200 Hoursand exposedto room temperature for 3 Hours. |
|
|
3
|
Humidity & Heat Test |
The microphone unit must be subjected to +55℃, 93% RH-for200 Hours and exposedto room temp for 3 Hours. |
|
|
4
|
Thermal Shocking Test |
The microphone unit must be subjected to following condition [+80℃ 0.5H → room temp 1H→ -40℃ 0.5H →room temp 1H] at 10cycle. |
|
|
5
|
Vibration Test |
The microphone unit must be subjected to a procedure that be vibrating for two hours from each of the Three directions(x y z) with a frequency of 10-55Hz and a 1.52mm-high amplitude. |
|
|
6
|
Dropping Test |
The microphone unit must be subjected to a procedure that be dropping to a slippery marble floor for 5 times from a 1.0-meter-high without package. |
|
|
7
|
Storage Temperature |
-40℃~+70℃ R.H. less than 90% |
|
|
8
|
Operating Temperature |
-40℃~+70℃ R.H. less than 90%
|
|
| 수입신고 1USD |
구매/결제대행 1CNY |
TT송금 1CNY |
|---|---|---|
| 6.81 CNY | 203.62 KRW | 0.149 USD |
