SMD-4020

SMD-4020 相關(guān)信息由 Shenzhen Jialigao Electroacoustic Mall Co., Ltd. 提供。如需了解更詳細的 SMD-4020 的信息，請點擊 http://m.nnfsds.com/b2b/jlgsound.html 查看 Shenzhen Jialigao Electroacoustic Mall Co., Ltd. 的詳細聯(lián)系方式。

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SMD-4020 SMD-4020圖片 SMD-4020生產(chǎn)廠家

Shenzhen Jialigao Electroacoustic Mall Co., Ltd.

Shenzhen Jialigao Electroacoustic Mall Co., Ltd. 449A, Beike Building, No. 59, High-tech South Nine Road, High-tech Zone, Yuehai Street, Nanshan District, Shenzhen

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Electrical Characteristics

Part No:SMT-4020-0340-17Ω

Rated Voltage	3Vo_p
Operating Voltage	2～4Vo_p
*Sound Output at 10cm	≥70dB
*Current Consumption	≤90mA
Resonant Frequency	4000Hz
Coil Resistance	17±3Ω
Operating Temperature	-20℃～+70℃
Storage Temperature	-30℃～+80℃
Weight	0.1g
Housing Material	Black LCP
Environmental Protection Regulation	RoHS
Welding method	Reflow soldering

DIMENSIONS(UNIT: mm) Tolerance: ±0.5mm Except Specified

DIMENSIONS

RELIABLY TEST

ITEM	TESTING CONDITION	VARIANCE AFTER TEST
High Temperature Test	After being placed in a chamber with 85±2℃ for 96 hours and then being placed in natural condition for 2 hours.	Allowable variation of SPL after test: ±10dB.
Low Temperature Test	After being Placed in a chamber with -30±2℃ for 96 hours and then being placed in natural condition for 2 hours.	Allowable variation of SPL after test: ±10dB.
Humidity Test	Stored in the?temperature?humidity: 60±5℃?90%--95%?environment?for 96 hours,?and then placed into?storage at room temperature for 2?hours after the?test.	Allowable variation of SPL after test: ±10dB.
Temperature Cycle Test	After being placed in a chamber with -30±2℃ for 30 minutes, products shall be placed at room temperature(25℃±10℃).After 15 minutes at this temperature, products shall be placed in a chamber at +85±2℃.After 30 minutes at this temperature, products shall be return to room temperature (25℃±10℃) for15 minutes. After 20 above cycles, products shall be measured after being placed in natural condition for 2 hours.	Allowable variation of SPL after test: ±10dB.
Drop Test	The front and side?from a height of 100mm?only?drop in the?4cm thickness of theboard?3 times each.	Allowable variation of SPL after test: ±10dB.
Vibration Test	After being applied vibration of amplitude of 1.5mm with 10 to 55 Hz band of vibration frequency to each of 3 perpendicular directions for 2 hours.	Allowable variation of SPL after test: ±10dB.
Solderability Test	Lead terminals are immersed in rosin for 5 seconds and then immersed in solder bath of 260±5℃ for 3±0.5 seconds (Except the edge of terminals).	95% min. lead terminals shall be wet with solder
Continuous electricity test	Temperature: room temperature 25 ℃ Voltage: rated voltage 3 V Frequency: the rated frequency for 4.0 KHZ Time: 500 hours	Allowable variation of SPL after test: ±10dB.
Erminal Strength Pulling Test	The force of 9.8N(1.0kg) is applied to each terminal in axial direction for 10 seconds.	No visible damage and cutting off.

Typical Frequency Response Curve

TESTING METHOD

Standard Measurement conditions

Temperature:25±2℃ Humidity:45-65%

Acoustic Characteristics:

The oscillation frequency, current consumption and sound pressure are measured by the measuring instruments shown below

Acoustic Characteristics

In the measuring test, buzzer is placed as follows:

In the measuring test, buzzer is placed as follows

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