Tips & Tricks – Why Do Components Tombstone

Tips & Tricks – Why Do Components Tombstone

Ever wondered what is Tombstoning and why does it happen?

What is Tombstoning?

Tombstoning also known as the Manhattan or crocodile effect is where one end of the component lifts from a pad of the PCB during reflow soldering process and affects mainly surface mount components such as resistors, capacitor and inductors.

    

Why does it happen?

There are a few reasons for Tombstoning such as the soldering process, contamination of the PCB or the actual PCB Layout.

When soldering a component to a PCB it is important that solder reaches the ideal fluid state, this is known as the Wetting of the solder.

It then forms an inter-metallic bond between the terminal of the component and the pad on the PCB before it cools and becomes solid.

Tombstoning occurs when one end of a component (like a resistor) completes the Wetting process before the other. This end then pulls and tilts the component to create the Tombstone effect.

The PCB Layout can influence the Wetting process. An imbalance of the thermal mass between component pads will result in one end completing the wetting process before the other.

At Eurocircuits we continue to develop our Tools, Information, and Guidelines to help PCB Designer Engineers to create ‘Right First Time for Manufacture’ PCB Layouts.

Why not take a few minutes to review our latest Guideline on Tombstoning.

Take a look at some of the exciting Projects that were presented @ Electronica 2019

Should you have any questions about any of our services, please feel free to get in touch via email, telephone or instantly with our online chat during office hours. We will be more than happy to help.

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News & Information

For many years Eurocircuits have provided you with important News & Information about our services, products, free to use smart tools and the Electronic Manufacturing World. Take a peak at what we offer:

  Eurocircuits company update. This section contains updates and information about the Eurocircuits Group. As a valued partner you will receive updates and news covering our company activities, team news and business developments etc.

  Events & Workshops. Eurocircuits is an active participant of events and exhibitions, it also organises events, sbinars and workshops, especially concerning technical topics

  Tips & Tricks.The electronic value chain starts with a design and then converting it to a digital form. This section covers all design related issues, their influence on manufacturing.

  Electronic Manufacturing Technology. Eurocircuits goal is to inform all Electronic Designers about Electronic Manufacturing Techniques and processes. Whilst, this may start with PCB manufacturing it also covers the Assbbly, Testing and Housing etc…

  Online Smart Tools – Services & Products. All Eurocircuits customers have access to an online customer account and through this, access to our Smart Tools and services. This section covers User Guides, updates and new features and tools etc. It will help you to optimise your knowledge, use of these tools and the electronic manufacturing services and products we offer.

  Customer Applications & Student Projects. Eurocircuits actively encourages its customers to share their experiences with other customers. In addition to this, we support many student projects and inspire thb to write about their adventures and the technology they have designed.

  eCvelo. Next to being an Electronics Manufacturing Company, Eurocircuits also has a heart for clean mobility. As result we have developed and are building trike and quad cycles with a covered frame. Keep updated by opting in to this section.

Eurocircuits TV
Eurocircuits TV is Eurocircuits’ media channel bringing electronic designers and others video news and VLOGs about our electronic manufacturing world.

Tips & Tricks: Avoiding Solder Escape/Wick during Reflow

Avoiding Solder Escape/Wick during Reflow

Have you ever wondered why sometimes you have poor Solder joints on your PCB’s!

One of the main reasons is that the Solder Paste flows away from the pad on the PCB during Reflow, this is known as Solder Escape, Solder Wick or Solder Drainage.

Why does this happen, well there are a few reasons but inevitably they are all the result of Thermal Dissipation during the Reflow process. Basically, the heat flows away from the pad on the PCB to a larger Thermal conductive area that’s connected to the pad and unprotected by a Soldermask Dam, these include:

  • Via Holes
  • Copper Areas
  • Larger Tracks

Below is an example (animation) of a Via Hole that is too close to a SM pad and therefore has no Soldermask Dam to stop the Solder Paste escaping into the hole.

There are several solutions to this issue and Eurocircuits is developing a PCB Assembly Guideline to help Designers understand and creating PCB layouts that may create potential Assembly issues.

Please visit our PCB Assembly Guidelines section on Solder Escape/Wick for more information on how to avoid this issue.

Should you have any questions about any of our services, please feel free to get in touch via email, telephone or instantly with our online chat during office hours. We will be more than happy to help.

Why not follow us on our social media, keeping up to date with all of our latest news?

       

News & Information

For many years Eurocircuits have provided you with important News & Information about our services, products, free to use smart tools and the Electronic Manufacturing World. Take a peak at what we offer:

  Eurocircuits company update. This section contains updates and information about the Eurocircuits Group. As a valued partner you will receive updates and news covering our company activities, team news and business developments etc.

  Events & Workshops. Eurocircuits is an active participant of events and exhibitions, it also organises events, seminars and workshops, especially concerning technical topics

  Tips & Tricks.The electronic value chain starts with a design and then converting it to a digital form. This section covers all design related issues, their influence on manufacturing.

  Electronic Manufacturing Technology. Eurocircuits goal is to inform all Electronic Designers about Electronic Manufacturing Techniques and processes. Whilst, this may start with PCB manufacturing it also covers the Assembly, Testing and Housing etc…

  Online Smart Tools – Services & Products. All Eurocircuits customers have access to an online customer account and through this, access to our Smart Tools and services. This section covers User Guides, updates and new features and tools etc. It will help you to optimise your knowledge, use of these tools and the electronic manufacturing services and products we offer.

  Customer Applications & Student Projects. Eurocircuits actively encourages its customers to share their experiences with other customers. In addition to this, we support many student projects and inspire them to write about their adventures and the technology they have designed.

  eCvelo. Next to being an Electronics Manufacturing Company, Eurocircuits also has a heart for clean mobility. As result we have developed and are building trike and quad cycles with a covered frame. Keep updated by opting in to this section.

Eurocircuits TV
Eurocircuits TV is Eurocircuits’ media channel bringing electronic designers and others video news and VLOGs about our electronic manufacturing world.

Be informed – Join us at the LED Event 2018

Be informed – Join us at the LED Event 2018

During the 9th Edition of the LED Event, R & D Managers, Engineers, Developers and Light Designers will be able to see the latest innovations in LED technology.

The lecture program and knowledge market is designed to provide visitors with the latest information about the available Hardware, Software (control) and Test & Measurement equipment.

The aim is to increase the rapid development of LED technology and increase the opportunities for the development of LED applications.

Register Free here.

Below, is a short video showing how the Eurocircuits eC Smart Tools help Design Engineers achieve “Right First Time for Manufacture” PCB’s.

Should you have any questions about any of our services, please feel free to get in touch via email, telephone or instantly with our online chat during office hours. We will be more than happy to help.

Why not follow us on our social media, keeping up to date with all of our latest news?

       

News & Information

For many years Eurocircuits have provided you with important News & Information about our services, products, free to use smart tools and the Electronic Manufacturing World. Take a peak at what we offer:

  Eurocircuits company update. This section contains updates and information about the Eurocircuits Group. As a valued partner you will receive updates and news covering our company activities, team news and business developments etc.

  Events & Workshops. Eurocircuits is an active participant of events and exhibitions, it also organises events, seminars and workshops, especially concerning technical topics

  Tips & Tricks.The electronic value chain starts with a design and then converting it to a digital form. This section covers all design related issues, their influence on manufacturing.

  Electronic Manufacturing Technology. Eurocircuits goal is to inform all Electronic Designers about Electronic Manufacturing Techniques and processes. Whilst, this may start with PCB manufacturing it also covers the Assembly, Testing and Housing etc…

  Online Smart Tools – Services & Products. All Eurocircuits customers have access to an online customer account and through this, access to our Smart Tools and services. This section covers User Guides, updates and new features and tools etc. It will help you to optimise your knowledge, use of these tools and the electronic manufacturing services and products we offer.

  Customer Applications & Student Projects. Eurocircuits actively encourages its customers to share their experiences with other customers. In addition to this, we support many student projects and inspire them to write about their adventures and the technology they have designed.

  eCvelo. Next to being an Electronics Manufacturing Company, Eurocircuits also has a heart for clean mobility. As result we have developed and are building trike and quad cycles with a covered frame. Keep updated by opting in to this section.

Eurocircuits TV
Eurocircuits TV is Eurocircuits’ media channel bringing electronic designers and others video news and VLOGs about our electronic manufacturing world.

Tolerances on PCB – Blog

What tolerances should I design into my PCB?

Where possible design your PCB to meet industry standard mid-range tolerances. Eurocircuits use these specifications and tolerances as the basis of our lowest-cost pooling services.

For more detailed information on our Manufacturing Tolerances please see our Tolerances on a PCB page.