18mm 8omega 0.25w Speaker dongguan factory 8 inch speakers

20mm 16ohm dongguan factory 8 inch speakers    

Title

Specification of  18mm  8Ω  0.25w  Speaker

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NO	ITEM	SPECIFICATION
1	Size	Φ18*H3.9 mm
2	Unit Weight	Approx 1.5±0.2Grams.
3	OPERATING TEMPERATURE	-30°C to +70°C
4	STORAGE TEMPERATURE	-40°C to +85°C

 

1	Impedance	8± 15% ohm    At  1000Hz/1v.
2	Lower Resonant Frequency	341Hz±20%   At1.0V
3	Output Sound Pressure Level  (S.P.L)	110±3db/1.0Watt0.1Meter.AverageAt1000,1200,1500,2000Hz.Measurement Method Shown In .
4	Rating  Power	Normal: 0.25W   Maximum:0.5W. (Input 0.5W white noise signal work 1 minute, speaker no permanent damage)
5	Response	FO~20,000Hz.Average SPL±10db. Shown In .
6	DISTORTION	5% Maximum At 1000Hz0.25W.
7	Buzz rattles	Must de normal  2.0 V sine wave between.
8	Polarity	Present to the speaker instantaneous dc voltage can cause the diaphragm to run, that is the pick of the input voltage for the positive
9	Operating test:	Must be free audible noise (buzzes and rattles)(30 ∼ 5KHz frequency range ,input level up to1.4Vrms
10	Environmental Protection Regulation	ROHS

        2. Main feature of Micro Speaker:
-Size range from 10mm to 100mm in diameter;
-Wide frequency range (200Hz~20kHz);
-Rich sound reproduction; -Paper or plastic cones, metal or plastic frames.   3. The main parameter values for micro speaker, as follows: 1, Dimension (mm): various alternative sizes; 2, Impedance (ohm): 8~35 ohm; 3, Sensitivity(db): 85~100db; 4, Frequency Range (Hz): 400Hz-20kHz; 5, Rated power (mw): 3~5mw.      Main products we are producing, Custom designs are welcome.   1. Piezo Diaphragm 2. piezo buzzer 3. Magnetic Buzzer 4. piezo atomizer 5. Surface Mount Buzzer 6. Ultrasonic Sensor 7. Mirco speaker 8. Piezo Ultrasonic Transducer Our Services   FAQ   Company Information SWT company was established in 1991. We are a professional enterprise specialized in researching, producing and selling various piezoelectric components, including piezoelectric ceramic elements, buzzers, atomizers, ultrasonic transducers, piezoelectric actuators, sensors, SAW touch panel, alarm siren and micro speakers. Our monthly output is 35 million pieces.  Nowadays, we have over 500 employees, a 24,000-square-meters manufacturing plant, and 300 sets of testing facilities and instruments, involving large scale automatic tunnel furnaces.    SWT has passed ISO9001:2008 and ISO14001:2004 validation. There are 70 senior engineers working in our plant, who have gained leading technical competence in design and production of piezoelectric acoustic components. Our products have been applied to the fields such as high-end automotive electronics, household appliances, IT, communication terminal, health and beauty care, textile machinery, navigation, aerospace, satellite positioning, national defense science and technology. SWT provides high quality products with competitive prices, short lead time and considerate service. We have won the favor and recognition of many famous customers.    ODM&OEM are also welcome.     Certifications   Main Clients            

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Product Categories : Micro Speaker