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ADG Coating to Lessen/Eliminate Probe Cleaning

ARIES Protect-A Probe™ ANTI-DIFFUSION GOLD (ADG)

• ADGisaproprietary,long-lasting,high-temperature(>150°C)alloycoatingthatresistsSncontamination.

• ADGcoatingexhibitsminimalmechanicalwearevenafterextremecycles.

• ADGoutperformsStandardGoldinTest,Burn-In,Programming,andEnvironmentalTesting.

• ADGhassuperiorWearResistancecomparedtoStandardGold.

TheCoefficientofFriction(μk)forADGisextremelylow,whichmeansthecoatingresistsmechanicalwear.

•μk0.89GoldProbeonGoldTestPlate

•μk0.38ADG-coatedProbeonGoldTestPlate

•μk1.13GoldProbeonPb-Free(Sn-coated)TestPlate

•μk0.57ADG-coatedProbeonPb-Free(Sn-coated)TestPlate

• ADGhasextremelylowSurfacePorosity,tentimes(10x)lessthanStandardHardGold

• SndoesnoteasilytransfertothesurfaceofADG,soProbesandContactsstaycleanlonger.Whereas,SnreadilyattachestoStandardGoldsurfaces,

especially in the presence of heat, pressure, shear, or voltage potential.

Two plates prepared for testing:

Plate #1 – a Cu base, plated with Nickel and Hard Gold

Plate #2 – a Cu Base, plated with Nickel and ADG

BothtestplateswereevenlycoatedwithSnandexposedto155ºCfor24hoursandthequantityofSndiffusedintothesurfacemeasured.

Sn diffused into Plate #1 = 4.8mg ±0.5mg (Standard Gold)

Sn diffused into Plate #2 = 0.0mg ±0.5mg (ADG-coated)

• ADGContactResistanceisequivalenttoStandardHardGold.MostalternativestoGoldrequiretheOEMtomakepainfuldesign/engineeringtradeoffs.

ADG does not have negative tradeoffs.

• SurfaceSmoothness:ADGissmootherthanStandardGold.ThisdecreasesSnaccumulationatcontactmatingpoints.

• Ductility:ADGhas50%greaterductilitythanStandardHardGold.Thiseliminatesmicro-cracksandallowsforcrimpingorotherassemblyoperations.

• ADGisproventoimproveSpring-Probeperformance.Asseeninthefollowingchart,ADGsignificantlyimprovedFirstPassYield.The Standard Gold

socket was cleaned four times during the production run, while the ADG socket was only cleaned once.