ESD Management

FLIPPABLE TRAYS ADD A NEW DIMENSION TO HANDLING AND PROTECTION

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THINKING 3-D WILL HAVE YOU FLIPPING

     Thanks to the wonder of gravity, you can rely on stuff staying in a box when placed there.  And if the stuff fits well in the box, only the top is accessible.  It’s pretty much the same for components in a tray.  Parts that fit precisely in tray pockets make processing a two dimensional activity unless you have discovered flipping.

    When BGAs (Ball Grid Array packages) first hit the market the need for accessing the balls was not recognized.  Once it was recognized, R H Murphy Company responded quickly with “flippable” trays.  R H Murphy invented BGA trays that can be inverted, unloaded, reloaded, and restacked while the parts remain contained and protected.  This makes inspection, rework, repair, even some level of testing possible without removing parts from the trays.  This same principal is readily applied to other device types.

   There is more to having flippable trays than just putting pockets on the bottom of a tray.  Managing the alignment and exposure of the parts in both orientations is critical.  Insuring that trays being stacked pre-align before engaging the parts requires unique features.  Eliminating device terminals, leads, or pins from being the point of first contact means the difference between a tray the protects and one the damages parts.

   The key to successful flipping is interengagement.  By building features that overlap, trays capture the components from the top and bottom simultaneously.  This provides a secure hand-off between trays and the components remain contained and protected in all orientations.

   R H Murphy has been doing all this while giving you the performance you count on:  ESD protection, mechanical integrity, thermal stability, JEDEC alignment features, and value above all else.  Don’t let yourself be limited to a two dimensional process.  Add a third dimension with flippable matrix trays from R H Murphy Company.

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Flippable BGA JEDEC Matrix Trays

5 Questions to Ask Your JEDEC Tray Supplier

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Trays are trays, right? Wrong! There are obvious differences and subtle ones, too. Beyond the specifications, here are a few question to ask your JEDEC tray supplier that will tell you what need to know before you invest your time and money.

Do your trays comply with the JEDEC outline dimensions and tolerances?

It’s important that trays meet the specification to work properly with automation equipment, fixtures and tooling. Don’t be misled by generic descriptions that don’t include tolerances.

RH Murphy Co. trays are manufactured to the same tolerances as the JEDEC standard.

Do you guarantee tray flatness at the maximum rated temperature?

Temperature ratings should be for continuous exposure and the trays must stay flat and functional. Some manufacturers are rating their trays based on deceptive testing. It’s not good enough that the tray doesn’t melt.

RH Murphy Co. tests trays at temperatures above their ratings to make sure trays will perform as promised.

 

warped JEDEC tray

When trays don’t meet their ratings

 

Do you use carbon powder in your trays? The best answer is no!

Carbon powder is a low-cost, electrically conductive filler for plastics used by some matrix tray companies. When enough is added to make trays static-dissipative, it rubs off the plastic (called sloughing). Now you’re putting dirty, conductive contaminants into your equipment, onto your parts, and your customers’ parts. You need to know whether you’ll be taking this risk.

RH Murphy Co. uses carbon fiber in NoStat® ESD-safe polymers. It’s non-sloughing and it makes the trays stronger.

 

carbon fiber composite JEDEC trays

NoStat® high performance composite polymers

 

How do you measure antistatic properties?

If a tray manufacturer claims to make antistatic trays, they should be able to measure it. Surface resistivity is the way to do it because it’s a property of the material that relates to the tray performance. Other methods can vary based on the geometry of the part being tested.

RH Murphy Co. measures surface resistivity with a simple-to- use meter – the same equipment used by the raw material suppliers, and easily used by customers.

 

measuring JEDEC tray resistivity

Resistivity meters confirm anti-static tray performance

 

Are you the tray manufacturer or a distributor?

Distributors provide valued services. But being in the middle, they can also complicate communications and add cost. You need to be aware of the role of the company acting as your JEDEC tray supplier. You can save time and money working directly with the people designing and building your trays.

RH Murphy Co. sells direct to all customers. All our customers buy factory-direct, including value added resellers (VARs).

In the early days, trays were often referenced by the JEDEC tray manufacturer and you may still find people using names like peak trays, shinon trays, kostat trays, daewon trays or murphy trays. There are even references to trays from matrix tray companies that no longer exist like AMS, Fluoroware, or Camtex. If you want JEDEC matrix trays (sometimes misspelled as JDEC or JADEC) to protect your parts and work properly with handlers and automation, you must be specific about your requirements.

JEDEC matrix trays are not generic. All share the JEDEC outline which ensures the trays will work with standardized process equipment, but how they hold the parts is the decision of each manufacturer. Trays from different manufacturers shouldn’t be mixed. There are no “standard” trays. Each tray is designed for a specific device (not just package type). Get exactly what you need, without surprises. You put a lot of value into your parts. Make sure all that value reaches your customer.

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JEDEC Trays in multiple colors

JEDEC Trays – “Can I get special colors?”

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JEDEC Trays in a range of colors

 

JEDEC Trays – “Can I get special colors?”

Is buying JEDEC trays like buying a Model T Ford – you can have any color you want as long as it’s black?

 

     JEDEC Trays are molded from a variety of plastic materials, and we all know that plastics come in almost every color imaginable.  Why is it that most JEDEC trays are black?  The short answer is:  CARBON.

    JEDEC trays are used to transport, process, and store many types of components, many of which are sensitive to ESD, electrostatic discharge – getting zapped by static electricity. One of the best ways to make the trays ESD-safe is to mix some form of carbon with the plastic.  Carbon is black and, when mixed with plastic, it makes the plastic black.  So, the easiest way to make ESD-safe JEDEC trays results in black trays. Trying to change a black, carbon-loaded plastic into some other color requires adding pigment.  The pigment has special properties to make it disperse well and those properties are not ideal for trays so you don't want to add too much.

    But what if you really don’t want black trays?  What if you want different colors for different uses?  Maybe you want to use a bright colored tray for parts that failed a test or use different colors to indicate which processes have been completed.  Do you have options?

     The good news is that there are options.  There are a few colors that can be produced in carbon-loaded, ESD-safe plastics.  An example is NoStat® C60 whose standard color is blue.  The colors available for carbon-loaded plastics are not vibrant, decorator colors but they are definitely not black.  For low-temp, non-bakeable trays there are additional options that use alternatives to carbon-loading to get ESD protection.  Without the carbon, bright, lush colors are possible.  Currently these non-carbon, ESD-safe options are not available for high-temp, bakeable trays.

     There are costs for custom colors that may seem high if tray quantities are going to be low.  The startup cost to mix a special batch of material, test it, and set up to mold trays is about the same for 10 or 100 trays as it is for 100,000.  Standard color trays are more likely to be in stock and cost less.  For these reasons, standard colors are used for most low volume applications.

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JEDEC Trays in a range of colors

RAPIDTRAY® PROGRAM DELIVERS CUSTOM JEDEC MATRIX TRAYS – NO TOOLING, NO WAITING

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R.H. MURPHY RAPIDTRAY® PROGRAM DELIVERS CUSTOM JEDEC MATRIX TRAYS – NO TOOLING, NO WAITING

 

Custom manufactured JEDEC matrix trays without the cost or lead time for tooling, R.H. Murphy Company RAPIDTRAY® JEDEC outline trays provide safe, secure containment of ICs, modules, sensors, MEMS, switches, connectors – many types of electronic components.

 

RAPIDTRAY® component trays offer ESD and mechanical protection in an industry standard format.  Precision injection molding and CNC machining combine to create custom designs without custom tooling.  R.H. Murphy Company’s RAPIDTRAY® program is perfect for engineering prototypes, low and moderate volume production, and any other requirements that benefit from lead times as short as one week and a low minimum order quantity.  Options include the choice of 180°C and 60°C temperature ratings, custom part number engraving, and blank cover trays.  With several universal tray blanks available, as well as cover and spacer trays, component heights from 0.5mm to more than 25mm are readily accommodated.

The RAPIDTRAY® program is powerful for companies developing new components or working with low volume devices.  It is also ideal for equipment manufacturers seeking trays to demonstrate functionality with new products and perform customer buy off.  Production worthy and fully process capable, the RAPIDTRAY® program lets product startup proceed without prohibitive costs, lead time, or commitments.

RAPIDTRAY® JEDEC outline trays are compatible with automated and manual processes.  Premium NoStat® conductive polymers are used to ensure consistent properties and performance.  All trays are designed by engineers with extensive experience in design and manufacturing.

 

About R.H. Murphy Company

Founded in 1982, R.H. Murphy Company has been an industry leader, inventing and supplying much needed products to support manufacturing, testing, and shipment of semiconductor devices, integrated circuits, sensors, and a growing range of electronic components.  R.H. Murphy Company combines exceptional creativity with knowledge and expertise in ESD management, industry standards, and automation technology which have been applied to the design and manufacture of polymer products generating numerous U.S. and international patents.  For more information contact R.H Murphy Company, Inc., 3 Howe Dr., Amherst, NH 03031; Call 603-889-2255; Fax 603-889-3129; email [email protected]; or visit www.rhmurphy.com.

 

 

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ESD AND MECHANICAL PROTECTION FOR TEST AND BURN-IN FROM R.H. MURPHY COMPANY

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ESD AND MECHANICAL PROTECTION FOR TEST AND BURN-IN FROM R.H. MURPHY COMPANY

 

ISOPAK Test and Burn-In Carriers for semiconductor devices are unique because they provide complete ESD protection and also eliminate false test failures caused by conductive carriers.  The device leads are electrically isolated so there is no chance of carrier conductivity being mistaken as leakage during testing.  R.H. Murphy Company offers custom carriers to mate with your choice of sockets.

 

ISOPAK Carriers’ patented designs produced with standard NoStat® ESD-safe polymers provide superior performance at temperatures up to 180°C.  Their modular characteristics make them a natural platform for custom and modified carriers as well.  ISOPAK Carriers are just one of the many ways that R.H. Murphy helps preserve the value of electronic components around the globe.

 

 

About R.H. Murphy Company

Founded in 1982, R.H. Murphy Company has been an industry leader, inventing and supplying much needed products to support manufacturing, testing, and shipment of semiconductor devices, integrated circuits, sensors, and a growing range of electronic components.  R.H. Murphy Company combines exceptional creativity with knowledge and expertise in ESD management, industry standards, and automation technology which have been applied to the design and manufacture of polymer products generating numerous U.S. and international patents.  For more information contact R.H Murphy Company, Inc., 3 Howe Dr., Amherst, NH 03031; Call 603-889-2255; Fax 603-889-3129; email [email protected]; or visit www.rhmurphy.com.

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R.H. MURPHY UTILIZES NOSTAT® COMPOSITE POLYMERS TO PROTECT SENSITIVE ELECTRONIC ICs AND COMPONENTS

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R.H. MURPHY UTILIZES NOSTAT® COMPOSITE POLYMERS TO PROTECT SENSITIVE ELECTRONIC ICs AND COMPONENTS

 

R.H. Murphy Company, a recognized innovator in the field of IC and electronic component handling and protection, uses NOSTAT® Composite Polymers to manufacture JEDEC matrix trays, carriers, handling and packaging products with superior ESD and mechanical protection.  Formulated with electrically conductive additives, the family of NOSTAT® Composite Polymers safely shield sensitive devices from electro-static discharge and tribogeneration.  Reinforcing elements in NOSTAT®Composite Polymers maintain flatness and dimensional accuracy while increasing strength and toughness, giving R.H. Murphy Company products outstanding precision and performance in automated and manual processes, shipping, and long term storage.

 

NOSTAT® Composite Polymers range from low-temperature formulations for use in applications up to 60°C to bakeable formulations rated to 180°C.  Unlike the short-term ratings applied to some discount products, these temperature ratings are real-world values and R.H. Murphy products will not warp or distort at rated temperatures.  NOSTAT® Composite Polymers are non-sloughing and do not contain carbon powder (a common compromise in low-cost trays) so they do not shed conductive particles that can harm electronics and contaminate solder joints.

 

R.H. Murphy Company offers a wide range of standard and custom products manufactured of NOSTAT® Composite Polymers.  Included are the many open-tooled trays and carriers for PGA, BGA, TO and many other surface mount and through hole devices.  Notable are the many custom trays manufactured through the RAPIDTRAY® Program, offering low- and moderate-volume custom JEDEC matrix trays with short lead times, low minimum quantities, and no tooling charges.

 

About R.H. Murphy Company

Founded in 1982, R.H. Murphy Company has been an industry leader, inventing and supplying much needed products to support manufacturing, testing, and shipment of semiconductor devices, integrated circuits, sensors, and a growing range of electronic components.  R.H. Murphy Company combines exceptional creativity with knowledge and expertise in ESD management, industry standards, and automation technology which have been applied to the design and manufacture of polymer products generating numerous U.S. and international patents.  For more information contact R.H Murphy Company, Inc., 3 Howe Dr., Amherst, NH 03031; Call 603-889-2255; Fax 603-889-3129; email [email protected]; or visit www.rhmurphy.com.

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