Aerospace PCBA

How to choose aerospace PCBA materials?

Make PCB material selections with an understanding of material properties and how they affect board quality and reliability for aerospace. In order to adequately cope with the adverse conditions that may be encountered inside and outside the circuit board, the PCB material should have the following properties:

 

 

Vibration and Shock Resistant

 

The energy required to launch a rocket into space is enormous. As such, almost all circuit boards are subject to vibration and/or shock forces, which can place stress on or on the board. Connector. This is even more of a threat for rigid boards because their bendability range is much tighter than flex boards.

 

Temperature cycle resistance

 

Whether inside or outside an aerospace platform, extreme temperature fluctuations can be part of normal operations. This must be taken into account when selecting PCB materials and ensuring that the critical temperature parameters of the board, such as the glass transition temperature (Tg), are not violated.

 

Moisture resistance

 

In general, temperature is inversely proportional to humidity. However, in closed environments such as spaces, vehicle humidity can become an issue. If so, electronics and circuit boards can malfunction due to moisture. Therefore, moisture resistance is a desirable attribute for PCB materials.

 

Anti-radiation

 

Depending on where the spacecraft is in Earth's atmosphere, it may have to be exposed to radiation or harmful RF. Since these types of interference can severely disrupt communications and other circuit operations, circuit boards need to be resistant to them.

 

The above properties should be targeted when selecting PCB materials for aerospace systems.

 

Aerospace PCB Manufacturing Capability

Aerospace PCB Manufacturing Capability
Product Features	Rigid PCB	HDI PCB	Rigid-flex PCB
Max Layer Count	30	24	+\- 16
Min Board Thickness	0.254 mm	0.254 mm
Max Board Thickness	6.35 mm	6.35 mm
Max Finished Copper Thickness/Weight (I/L)	6 oz	2 oz	2 oz
Min Panel Size	300 x 460mm	300 x 460mm	300 x 460mm
Max Panel Size	530 x 740 mm	530 x 740 mm	450 x 610 mm
Smallest Mech Drill Diameter	0.15 mm	0.127 mm	0.15 mm
Smallest Laser Drill Diameter	0.10 mm	0.10 mm	0.076 mm
Max Through-Hole Aspect Ratio	0.417361111	0.417361111	0.417361111
Max Blind Via Aspect Ratio	0.75:1	0.75:1	0.75:1
Min Trace and Space Width	0.076 mm	0.076 mm	0.089 mm
Min Pad Size for Test	0.005″ (.127 mm)	.004″ (.102 mm)	.005″ (.127 mm)
Stacked Vias	Yes	Yes	No
Min Wire Bond Pad Size	> 0.102 mm	> 0.076 mm	0.127 mm
Controlled Impedance Tolerance	0.1	0.1	0.1
Min Diameter Routing Cutter	0.610 mm	0.610 mm	0.610 mm
Mech Routed Part Size Tolerance	+/- 5	+/- 5	+/- 5
Laser Hole Location Tolerance	0.025 mm	0.025 mm	0.025 mm
Laser Routed Part Size Tolerance – Can only be done with panels <.032″ thick	0.025 mm	0.025 mm	0.025 mm
Bow and Twist Tolerance	Per IPC Spec	0.07	7% along rigid area
Thickness Tolerance	0.1	0.1	0.1
Sequential Laminations	3	4	3
Conductive Filled Vias	Yes	Yes	No
Non-Conductive Filled Vias	Yes	Yes	Yes

 

Aerospace PCB Manufacturing and Assembly Process

 

We are one of the aerospace industry's leading suppliers of low-volume PCB assembly, high-mix facilities, advanced assembly techniques and multi-layer rapid spin prototyping. In aerospace manufacturing, strict quality standards are adhered to.

 

Beton Tech have the expertise and capabilities to ensure your aerospace PCBA meets or exceeds your design goals and industry requirements.We have the necessary expertise to provide advanced assembly techniques and multi-layer rapid prototyping. The aerospace PCB manufacturing process is as follows:

PCB drilling→sequential lamination→blind and buried vias→filled vias (conductive and non-conductive vias)→laser drilling and stacked vias→heat sinks→edge weaving and castellation→application of thermal paste→soldering→Aerospace PCB

 

Beton Tech provides the most reliable solution for aerospace PCB manufacturing and assembly requirements! Aerospace PCB Assembly process is as follows:

Solder paste application→component placement→application of solder paste→placing components→reflow oven→inspection→through-hole component insertion→final inspection→deionized water cleaning→testing aerospace PCB components→PCB quality inspection→packaging.

 

Aerospace pcba inspection standards

Aerospace circuit board assembly (PCBA) is an important technical process that requires rigorous inspection and validation. The following are aerospace PCBA inspection standards:

1. Appearance inspection

(1) Appearance defect inspection

(2) Logo inspection

(3) Symbol and character inspection

2. Electrical performance inspection

(1) Electrical performance inspection

(2) Functional inspection

(3) Mechanical performance inspection

(4) Welding quality inspection

(5) Device installation inspection

(6) Temperature cycle test

(7) Damp heat cycle test

Generally speaking, the inspection standards of aerospace PCBA are extremely strict and rigorous. The inspection content of the above aspects is a key inspection point, and any link cannot be ignored. It must be 100% up to standard before it can be delivered for use.

 

Aerospace PCBA Application

Beton Technology as one of the foremost suppliers of aerospace PCB engineering services and solutions, we provide a wide range of aerospace approved electronic solutions, aerospace PCB assemblies and prototypes.

Aerospace PCBA components are not only able to withstand extremely high heat, but also have efficient radio transmission frequencies, proper shock absorption mechanisms, and low radiation risk.PCBs have many applications in aerospace. For example:

• Radio communication system
• Radar device
• Aerospace sensor PCB
• Power converter
• Power supply
• LED lighting system
• Electronic flight instrument
• Temperature Sensor
• Engine control system
• Audio interface application

 

Why choose Beton Technology as your aerospace PCB assembly supplier?

Our Beton Technology has more than 18 years of experience in the manufacture and assembly of many PCBs. No matter how simple or complex your PCB requirements, you can rely on us. With our state-of-the-art equipment and experienced staff, we can meet your needs. Especially when it comes to specialized PCBs such as aerospace PCB assembly, you often also benefit from a wide range of industry best practices.

 

A great advantage we also offer is our quick turnaround time. This significantly reduces your time to market and gives you a competitive advantage. The fact that we also offer prototype quantities as well as high volume production means you can rely on us for all your requirements.

 

Our extensive experience with specialized PCBs, such as those related to aerospace PCB assembly, makes us a partner of choice.

 

All you need to do is get in touch with our team at Cathy@beton-tech.com and share your exact requirements with us. We will make sure to provide you with a very cost-effective custom quote.