Audio Amplifier Pcb Board
Specifications of Attendance Machine PCB:
FR-4, FR-2, aluminum,
Finish Board Thickness
0.2 mm-6.00mm(8mil -126mil)Surface Finish
Gold finger, Immersion Gold, Plating
Gold, HASL, OSP
Solder Mask(black, green, white, red, blue, thickness>=12um, Block,
Silkscreen(black, yellow, white)
Peel able-mask(red, blue, thickness>=300um)
1/2 oz min; 12oz max
Min Trace Width & Line Spacing
0.075mm /0.075mm (3mil/3mil)
Min Hole Diameter for CNC Drilling
Min Hole Diameter for Punching
Biggest panel size
610mm * 508mm
+/-0.075mm(3mil) CNC Drilling
+/-0.05mm(2mil) or +/-20% of original
+/-0.1mm (4mil) CNC Routing +/-0.1mm(5mil) CNC Routing
Warp & Twist
Structure and composition:
The purpose of audio amplification is to reproduce the audio input signal with high efficiency and low distortion on the vocal output component at the required volume and power levels. The frequency range of the audio signal is 20 Hz to 20 kHz, so the audio amplifier must have a good frequency response. Audio amplifiers typically consist of a preamplifier and a power amplifier.
The amplitude of the audio signal source is generally small and cannot directly drive the power amplifier, so they must be amplified to a certain amplitude first, which requires the use of a preamplifier. In addition to signal amplification, the preamp can also have volume adjustment, tone control, loudness control and channel equalization.
The power amplifier is simply referred to as a power amplifier. Its purpose is to provide a large enough current drive capability for the load to achieve power amplification. Class D power amplifiers work in the switching state. In theory, it does not require quiescent current and has high efficiency.
1..We offers the latest in assembly capabilities and qualifications insuring that quality is built into every product we produced and save the your production cost in better level.
2.PCB manufacturing from 1 to 38 layers(Rigid PCB,Flexible PCB,Ceramic PCB,Aluminum PCB);
3. Set up charge and tooling charge is free, when one order over 3 sqm.
4.Flying test is free when one order less than 1 sqm
5.We can produce rigid FR4 1-8 layer and Aluminum PCB.
6.Pass through ISO9001/UL/94V-O/SGS/ROHS certificate
7.All pcb boards are OEM design,Send us PCB design(gerber,DXP,99SE file all ok for us)
Audio amplifier pcb board function After the audio signal is amplified, the sound is played back by the speaker itself to make it louder.
1.Professional surface mounting and through hole soldering technology;
2.ICT(In Circuit Test),FCT(Functional Circuit Test) technology;
3.Nitrogen gas reflow soldering technology for SMT;
4.High standard SMT&Solder Assembly line;
5.High density interconnected board placement technology capacity.
Q1.What is needed for PCB PCBA quotation?
· PCB: Quantity, Gerber file and Specifications (material, surface finish treatment, copper thickness, board thickness ,...)
· PCBA: PCB information, BOM, (Testing documents...)
Q2. What file formats do you accept for PCB PCBA production?
· Gerber file: CAM350 RS274X
· BOM: Excel (PDF,word,txt)
Q3. Are my files safe?
Your files are held in complete safety and security.We protect the intellectual property for our customers in the whole process.. All documents from customers are never shared with any third parties.
There is no MOQ in Xinda.We are able to handle Small as well as large volume production with flexibility.
Q5. Shipping cost?
The shipping cost is determined by the destination, weight, packing size of the goods. Please let us know if you need us to quote you the shipping cost.
Q6. What payment method we accept?
wire transfer (T/T)
Q7. How do we ship your pcb products?
1.by DHL, TNT, UPS, Fedex
2.b sea for mass production according to customer's request
3. by custmers' forwarder
Q8. Can you design for us?
Q9. How about your delivery time?especially for sample?
A:Normally,it will take 3 to 10 days.
To expedite quick samples within 24 hours is available and extra charges will be on your account for the service.
Tel: +86-0755-29621535 EXT 822