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WorksheetsVISUAL CRITERIA FOR SOT669
Total questions: 13
Worksheet time: 7mins
Damaged reject if clamping mark reduces leads dimensions by how many percent?
20%
25%
30%
35%
Reject if there is a metal deformation (flattened edge), on heatsink tab and leads induced during mold clamping, with dimension greater than 0.20mm or exceeds package outline dimension (POD).
CHIPPED PACKAGE
BURR
BLADING
TIP TOE
Reject any evidence of impression or dent (assembly induced) on the heatsink back.
Dent on Heatsink
Scratch on Heatsink
Flakes
Incomplete Fill
Reject if there is any intrusion cutting of heatsink.
Intrusion on Heatsink Tab
Protrusion on Heatsink Tab
Burr
Uncut Heatsink
Reject if the leads were not completely formed.f
Lump
Sway Leads
Stand-Off reject
Tiptoe
Chipping on the planes of the plastic package exposing internal part (wire, crystal, solder, leadframe pad) with dimensions Greater than 4.0mm (Longer Side) or Greater than ______ mm (Shorter Side)
0.5
0.4
0.2
0.1
Reject if there is a mould flashes at the heatsink Greater than 10% measured from the encapsulation periphery.
Dirty Package
Contamination
Mould Flashes
Flakes
Reject one or more scratches that exposes copper on front and back portion of the heatsink.
Exposed Copper
Scratch Package
Dent On Heatsink
Burr
Reject if there is any portion of the heatsink bar, tie bar and / or index bar with punching mark but not totally cut during crop / singulation process.
Uncut Dambar
Uncut Heatsink
Uncut Tie bar
Burr
Any foreign material attached on the backside package that affects the heatsink flatness.
Contamination
Dirty Package
Foreign Material
Exposed Copper
Any sign of incompleteness of plastic package exposing wire, or crystal, or solder, or lead frame pad, and or center post.
Contamination
Burr
Incomplete Fill
None of the choices
Reject if unit had incomplete plating or no plating on the active surface region exposing nickel or copper base material.
Uncut Dambar
Incomplete Fill
Incomplete Leads
Incomplete Plating
Reject if void is greater than 0.50 mm in any direction and located at the edge of leads or pad or sidewall of a plastic package.
Dirty Package
Void/Pitted/Blister on Package
Contamination
Dent on Package
