CircuitMedic
First-Aid Kits for Circuit Boards ®
www.circuitmedic.com
Haverhill, MA 01835 USA
A Circuit Technology Center Company
Parts table
Qty Part No. Description
5 115-3315-5 Mixing Picks
Pkg/3 115-9010 Mask, High Temperature
Pkg/5 235-2108-5 Foam Swab, Large
Pkg/5 235-4010 Heat Shield Blanket, 5" x 7"
Pkg/5 235-4060 Heat Shield Plates, 5" x 7"
1 290-2075 Tape, High Temperature
1 335-3150 Scissors, 8"
1 335-3195 Probe
1 335-3197 Scraper, Curved Tip
201-3160 Heat Shield Kit

This kit includes all the tools and materials you need to protect heat-sensitive areas of an assembled circuit board from excessive heat exposure during rework operations. This kit is ideal for protecting adjacent components at risk of collateral heat damage during hot gas BGA rework.

During component rework, protection of nearby components is often mandatory to avoid collateral heat damage or inadvertent reflow.

Collateral heat damage or unintended reflow of adjacent component solder connections can result in component damage, oxidation, de-wetting, pad damage, wicking, starved joints, and scorching. These issues can create new unintended rework problems. The rework technician must constantly be aware of the effect of heat on the target device or circuit, plus how it affects components near the target device on both sides of the assembly.

The kit includes sheets of aluminized heat shielding material, aluminum plates, a high-temperature liquid mask, high-temperature tape, scissors, and various tools.
Features
Aluminized heat shield insulates the circuit board surface and components from extreme heat.
Aluminum plates deflect excess heat.
Quick cure high temperature mask seals seams to block extraneous heat flow.
Includes high temperature tape, tools and materials.
All the tools and materials are packaged in a handy case.


235-4010 Heat Shield Blanket
201-3160 Heat Shield Kit
235-4010 Heat Shield Blanket protecting components and a connector prior to installation of a BGA component.
These are 5" x 7" sheets of fiberglass fabric, aluminum foil laminate with a pressure-sensitive adhesive backing. Heat Shield Blanket is designed to reflect 90% of the radiant heat energy. It will withstand continuous heat in the leaded and lead-free solder melt temperature range and short-term exposure at temperatures up to 1000°F/538°C.

Figure 1 shows #235-4010 Heat Shield Blanket protecting components and a connector before installation of a BGA component.

Heat Shield Blanket vs. Heat Shield Plates is recommended for more demanding heat protection. Heat Shield Blankets can be used in conjunction with Heat Shield Plates to create a more robust thermal shield with a more rigid structure.

Heat Shield Blanket has an adhesive backing and is protected with a release liner. The release liner must be removed and discarded before use.
CircuitMedic
First-Aid Kits for Circuit Boards ®
www.circuitmedic.com
Haverhill, MA 01835 USA
A Circuit Technology Center Company
201-3160 Heat Shield Kit

235-4060 Heat Shield Plates
201-3160 Heat Shield Kit
235-4060 Heat Shield Plate cut to shape and held in place with High Temperature Tape.
These are light gauge 5" x 7" aluminum sheets used primarily when simple heat deflection is required. Heat Shield Plates are easy to size, cut, form, and bond or tape into place using the high-temperature mask or high-temperature tape supplied in the kit.

Aluminum is a good conductor of heat. When using Heat Shield Plate material to deflect heat, leave a small space between the Heat Shield Plate and the protected component or area to avoid direct contact transfer of heat.

Figure 2 shows 235-4060 Heat Shield Plate cut to shape and held in place with high-temperature tape.

115-9010 Mask, High Temperature
This product is a high-temperature, quick cure, synthetic latex, peel-able solder mask supplied in syringes with dispensing needles. This mask can create free-form heat shielding or seal the edges of the Heat Shield Blanket or Heat Shield Plates. Product cures at room temperature in 5 minutes. Once dried, it can be peeled off after use.