Flextac BGA Rework Stencil Kits Practical Dummy Components

Flextac™

BGA Rework Stencil Kit

Tools and Supplies

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If you’ve been using metal stencils for BGA rework, we have some great news for you.

Flextac BGA Rework Stencils…a creative new product is a major improvement over what you may be using now.

These flexible solder paste stencils are laser cut from high quality, anti-static polymer film with a residue-free adhesive backing. Because they are self-sticking, no tape or fixturing is needed. The adhesive seals around each BGA pad to prevent solder paste from bleeding under the stencil when the paste is applied. Flextac Stencils are easy to use and leave no residue on the board surface.

Typical BGA rework stencils are made from metal and require fixturing or taping to position them and hold them in place. Metal stencils warp easily, and if the circuit board has undulations in the board surface, the metal stencil will not sit flat. Since there is no gasket-like seal, solder paste can easily bleed under metal stencils when paste is applied with a squeegee. Also solder paste can spill out over the sides of flat metal stencils contaminating the circuit board surface. Metal stencils require tedious stencil cleaning. To use metal stencils effectively, a high level of operator skill is required

How Flextac Stencils Work

Flextac BGA Rework Stencil Kit is packaged in a rugged ESD safe case.

The Kit includes 20 different sizes of BGA rework stencils, a spatula handle and three sizes of spatula blades. Step 1

Step 1: Select the proper size and fold up the side tabs.

Step 2

Step 2: Peel off the cover film exposing the adhesive backing.

Step 3

Step 3: Place in position using the handy side tabs.

Step 4

Step 4: Apply paste using a standard metal squeegee.

Step 5

Step 5: Remove the stencil and save for another reuse or dispose.

You first fold the pre-scored side tabs and then peel off the protective cover film from the bottom side of the stencil. Holds the side tabs while placing the Flextac Stencil in position on the circuit board surface. If the stencil is not correctly positioned, you can simply reposition it. The side tabs also serve as solder dams preventing solder paste overspill. No external taping or fixturing is used. You next apply a small dab of solder paste and uses a standard squeegee to spread the paste. Since the residue-free adhesive seals around each BGA pad, you can make as many passes with the squeege as needed to assure proper aperture filling. The Flextac Stencil is then peeled up leaving a perfect deposit of solder on each pad. Although Flextac Stencils are disposable, they can be used several times.

Application

Applying solder paste for BGA rework.

Features and Benefits

Residue-free adhesive backing seals around BGA pads to prevent solder paste bleed.
Laser cut ensures precise aperture size.
Disposable—eliminates tedious stencil cleaning.
Flexible—conforms to board surface.
Fold-up sides for easy placement and solder paste containment.
Low cost.
Packaged in a handy ESD safe carrying case.

Flextac BGA Rework Stencil Kit
Kit Part Number	Description
201-3120	Flextac BGA Rework Stencil Kit
Custom pattern stencils are available as special order with up to 2,600 holes per stencil. Please call Practical for quotation.

Hand Tools Included in Kit
Part Number	Description
115-3514	Spatula (1 piece)
115-3502	Squeeqee Blade Handle (1 piece)
115-3504	Squeeqee Blade - 12mm (1 piece)
115-3506	Squeegee Blade - 27mm (1 piece)
115-3508	Squeegee Blade - 35mm (1 piece)

Flextac BGA Rework Stencil Kits Each kit includes 2 stencils per ball count
Part Number	PBGA Ball Count	Body Size	Pitch	Aperture Size	Ball Pattern (matrix)
B6-119-1422-127	119	14 x 22mm	1.27mm	.020" (0.508mm)	7 x 17 Full Array
B4-196-1515-100	196	15mm	1.0mm	.020" (0.508mm)	14 x 14 Full Array
B6-225-2727-150	225	27mm	1.5mm	.025" (0.635mm)	15 x 15 Full Array
B4-256-1717-100	256	17mm	1.0mm	.020" (0.508mm)	16 x 16 Full Array
B8-256-2121-127	256	21mm	1.27mm	.032" (0.813mm)	16 x 16 Full Array
B6-256-2727-127	256	27mm	1.27mm	.025" (0.635mm)	20 x 20 P4-Row
B6-272-2727-127	272	27mm	1.27mm	.025" (0.635mm)	20 x 20 P4-Row + 4x4 center
B6-292-2727-127	292	27mm	1.27mm	.025" (0.635mm)	20 x 20 P4-Row + 6x6 center
B8-304-2125-127	304	21 x 25mm	1.27mm	.032" (0.813mm)	16 x 19 Full Array
B4-324-2323-100	324	23mm	1.0mm	.020" (0.508mm)	22 x 22 P4-Row + 6x6 center
B6-352-3535-127	352	35mm	1.27mm	.025" (0.635mm)	26 x 26 P4-Row
B6-357-2525-127	357	25mm	1.27mm	.025" (0.635mm)	19 x 19 Full Array
B8-361-2525-127	361	25mm	1.27mm	.032" (0.813mm)	19 x 19 Full Array
B6-388-3535-127	388	35mm	1.27mm	.025" (0.635mm)	26 x 26 P4-Row + 6x6 center
B6-432-4040-127	432	40mm	1.27mm	.025" (0.635mm)	31 x 31 P4-Row
B4-484-2323-100	484	23mm	1.0mm	.020" (0.508mm)	22 x 22 Full Array
B6-560-4242-127	560	42.5mm	1.27mm	.025" (0.635mm)	33 x 33 P5-Row
B8-625-3232-127	625	32.5mm	1.27mm	.032" (0.813mm)	25 x 25 Full Array
B4-672-2727-100	672	27mm	1.0mm	.020" (0.508mm)	26 x 26 Full Array
B4-676-2727-100	676	27mm	1.0mm	.020" (0.508mm)	26 x 26 Full Array

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