PCB photos on Flickr

Close-up of the receiver. The main chip is the Nordic RF chip that also contains a microcontroller. The chip near the bind button is an EEPROM that holds bind information persistently.

On the right of the two ICs are two voltage regulators. The upper one is a 3.3V regulator that drives most of the logic, the lower one generates 2.5V needed for the Nordic chip.

Just below the servo connectors are four tiny protection resistors. We will de-solder the left most one to free up the signal pin on the battery connector. Stock this pin contains some form of test signal that is unfortunately not PPM but a sum of the three servo pulses.

Side note: The receiver consumes about 25mA at 5V. If the 3.3V regulator is able to accept 10V input voltage then one could power up this receiver directly from a speed controller that does not have a BEC, like most older Tamiya ones.

Alternatively one could replace the voltage regulator to ensure it can handle at least 10V.

ZIMOUN's project, developed at the Artlab by Digitalarti

PCB designing.

PCB by Jakey or, Jakes or JW

1

PCB 287 by Valgina

1

Jase being Ja$e

PCB_3552 by BC Children's Hospital Foundation

For Children we Care

PCB-84 by PharmTox Society

RCStreamline Photography mob#0877862089

Arduino Protoboard Shield PCB by Marlon J. Manrique

PCB

PCB atadecer 103 by aromaticape

_MG_7863.JPG by Jeff Saltzman

1

"GRINDER TIMER BUTTON PANEL" works!! My very first printed circuit board-- quite satisfying! Traces near the 9-pin header are too tight-- many good lessons for next time.

Cortinaire (sous genre Telamonia) by Chantal Gauthier

PCB 152 by Valgina

PCB reflow soldering by brsmotorsport

DSC00745.JPG by ッ Zach Hoeken ッ

here is one board, note some of the traces got partially etched.

cablaj cu trasee pozitiv 20 by Tarce Adrian

dotklok_pcb_rev1_populated by A O

PCB rev. 1 for DOTKLOK

More info:

www.aomalley.org/lighting/dotklok.html

PCB 1625 by Peter Kemmer

A closer alternate of a favorite.

Variations on the Sound Blaster X-Fi Platinum.

Strobist info:

285HV bare at full power 6' away

pcb sample by Pacific PCB

pacific-circuit.wix.com/pcb-circuit-imprime

PCB Board by Bee Forks

1 1

PCB-C 481 by 12Stone Church

PCB - Prototyping Workshop by Times Up Linz

vsmile_pcb_scan_top by bushing

19 - Minarelli PCB - Willem Heijkoop - Eurocup-50 by Manfred M.

1

PCB 193 by Valgina

PCB-D 917 by 12Stone Church

Aluminum PCB by ZF PCB

With excellent electrical properties, heat dissipation capability, electromagnetic shielding, high dielectric strength and resistance to bending, aluminum substrates are widely used in many industries such as high-power LED lighting, power supplies, TV backlighting, automotive, computer, air conditioning inverter modules, avionics, telecommunications, medical and audio. When it comes to cell phone cameras which are the most commonly used in our daily life, aluminum PCBs are of great importance. As a metal core PCB (MCPCB), aluminum PCB has many similarities with FR4 PCB in terms of manufacturing process or technology, including thick copper foil etching, aluminum surface etching protection, aluminum board manufacturing and solder resist film printing.

Since the 1970s, aluminum PCBs were first used in power amplification hybrid ICs and have become popular. Due to the development of LED industry in recent years, the application and trend of them are increasingly widespread. Therefore, in order to better utilize them in the product and industry, it is necessary to understand some important characteristics of the PCBs.

Structure of Aluminum PCB

In terms of the structure, it truly shows the structure of aluminum CCL consisting of copper foil, dielectric layer, aluminum base and aluminum base film (which is optional).

(1) Copper foil layer

The aluminum CCL has the same copper foil layer as the ordinary one. The circuit layer requires large current carrying capacity, which is the reason for changing thicker copper circuits from 1 ounce to 10 ounces. The back of the copper foil must be chemically oxidized while the surface should be zinc-plated and brass-plated to improve the peel strength.

(2) Dielectric layer

The dielectric layer consists of a layer of thermally conductive dielectric material with low thermal resistance and a thickness of from 50μm to 200μm, which is the core technology of aluminum CCL. It excels in resistance of heat and aging and can withstand mechanical and thermal stress.

(3) Aluminum base

The aluminum base is actually the aluminum substrate material and is the support component. It requires a high thermal conductivity to be suitable for general mechanical engineering, such as drilling, punching and cutting.

(4) Aluminum base film

The aluminum base film serves to protect the the surface from scratches and etchants. The films can be classified as normal one (below 120°C) and high-temperature-resistant one (250°C). The latter type can meet the requirements of HASL as a surface finishment.

Aluminum PCB performance

(1) Heat dissipation

Compared to normal FR4 PCBs, the aluminum PCBs perform better and more quickly in heat dissipation. Take the FR4 PCB and the aluminum PCB with the same thickness of 1.5mm as an example. FR4 PCBs have a thermal resistance of from 20°C/W to 22°C/W while aluminum PCBs have it of from 1°C/W to 2°C/W, which proves the feature again.

(2) Thermal expansion

The thermal expansion and contraction are common properties of substances but have different coefficients. Because of the excellence in heat dissipation of the aluminum PCBs, the problems on the thermal expansion and contraction on the board surface will be significantly reduced to increase the durability and reliability of the entire equipment and electronic devices. This kind of advantages can be particularly suitable for the thermal expansion and shrinkage problems of surface mount technology (SMT).

(3) Dimensional stability

The aluminum PCBs have significantly stable dimensions. Their dimensions will only change about 2.5% to 3.0% when they are heated from 30 ℃ to 140 ℃ or even 150 ℃.

(4) Other performance

a. Applicability to power device SMT.

b. Effective thermal expansion of circuit design.

c. Helpful to reduce operating temperature, improve product power density and reliability, and extend the shelf life of products.

d. Helpful to reduce the size of the product, hardware and assembly costs.

e. Easy replacement of fragile ceramic substrates with better insulation performance and mechanical durability.

If you have questions about our aluminum PCB production capacity, or the specifications required for your custom project are not listed on this page, please feel free to contact us. We will reply within one workday. We will continue to provide quotation support and design support. Welcome to learn about our production process.

www.zfpcba.com/products/aluminum-pcb.html

Nixie Clock by Richard Wigley

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