TEST ELECTRONICS’ REFLOW CARRIER PALLETS
Precision Machined High Temperature Pallets for Pick & Place and Solder Reflow

Carrier Pallets
High Strength, high temperature, semiconductive composite board designed for use as circuit board and flex circuit carrying pallets for solder reflow ovens.

Pallet Features
» High strength to withstand operator abuse and repeated use without damage.
» High temperature compatibility allowing frequent cycles through IR reflow soldering without warping or delamination
» Dimensional stability so that fit and alignment are the same time after time.
» Chemical resistance which provides long pallet life even through rigorous cleaning processes.
» Consistent conductivity on the surface and through the sheet to preserve sensitive components.
» Low heat absorption allowing the machines to run cooler and faster.
» Special pin fabrication and insertion techniques prevent loosening of circuit board alignment pins.
» White lettering provides easy to read part number labeling.

Standard Machining and Static Protection
The pallet material is impregnated with a conductive carbon which acts to prevent static damage. Standard machining techniques can loosen and wash this protective carbon away from the surface areas where it is most needed. Test Electronics prevents this by using a high speed spindle speed of 30,000 rpm. This high speed promotes cleaner cutting of the fibers and minimizes breaking up and washing away the conductive carbon composite material. After the machining process, the pallet is then micro bead polished to a gloss ensuring that the fibers and carbon are blended smoothly at the surface for optimum static protection.

Lower heat Absorption
Special machining and polishing techniques which enhance the surface conductivity also allows the use of lower carbon content pallet material. This lightens the color and reduces heat absorption allowing the reflow soldering machines to run cooler and faster.

Tooling Pin Insertion Base Styles
Tooling pins are installed using an automated machine for positioning, and insertion. This technique provides perpendicularly exceeding 1/1000" per linear foot, and prevents drift due to side scoring and chipping. The end result is an extremely high degree of accuracy and repeatability in pin positioning. Above all, a tighter press fit for better mechanical reliability.
Other techniques for even higher reliability are as shown above:
» Swaged pins.
» Grove and glued pins (high temperature epoxy)..
» Cap captured pins.

Tooling Pin Body Styles
A variety of pin body styles are available. The styles are listed from the lower cost to the most expensive. The tradeoff is pin placement longevity. The stainless steel pins expand and contract at different rates than the pallet material, and can loosen up over time. The flanged step pin holds the best but costs the most. Common pin styles available are:
» Straight pins
» Step pins
» Flanged Step Pins.

Tooling Pin Tip Styles
» Round head for standard through holes
» Diamond head for slotted holes
» Elongated round head for precision aligning slotted holes

Quality
All versions of the Pallet materials are closely checked for warp, twist, surface resistivity and other key properties prior to being micro-sanded to the tightest tolerance control available.

Delivery:
5 Prototype units one week
50 units per week after prototype approval
100 units per week ramp up after first 100 units.

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