MK Electron

재료의 순도에 따라 4N(99.99%), 3N(99.9%), 2N(99%)으로 구분

첨가 원소의 종류와 양에 따라 High loop, Middle loop, Low loop 으로 구분

: Classification by Loop Height → Depends on HAZ Length by gold purity → 2N(99%), 3N(99.9%), 4N(99.99%)

Classification of Bonding Wire
Purity	Loop Control	Haz Length	Wire Type
4N	High	Long	M
	Middle	Medium	T,UB,SUB
	Low	Short	L,XC,UN
3N	Low	Short	UR series
2N	Middle Low	Short	R,LK

R : 1% Pd alloy Excellent mechanical property and thermal stability Slow IMC growth due to the Pd barrier effect (high reliability performance)
LK : Soft Hardness FAB and Bonded ball Similar bonding parameter window with 4N gold bonding wire Broad IMC coverage Slow IMC growth due to the Pd barrier effect (high reliability performance)

UR series : Universal application on various PKG Excellent looping formation, high reliability gold bonding wire for green PKG and fine pad PKG’s

M : High loop wire for conventional PKG Soft wire with large grain size
L : Middle loop wire for conventional PKG Formation of stable loop height by controlling ball neck grain
T : Middle loop wire for long span PKG Stable bondability and loop shape Better toughness and higher yield strength than M, L type
UB : High performance wire for fine pad pitch Excellent looping & stable ball forming capabilities
SUB : Soft hardness FAB and Bonded ball Robust IMC coverage , Stable IMC growth Superior Uniformity of bonded ball shape
XC : Super low loop wire for thin PKG Formation of stable low loop by strengthening on the ball neck
UN : Ultra low loop wire High resistance for ball neck damage Excellent resistance to mold sweeping Applied to CSP, MCM, TSOP, Stacked Die PKG

Gold Bonding Wire Products Line-Up
Classification	Normal 4N Wire			High Performance 4N wire		High Tensile Strenght 4N wire	High Reliability Wire
Classification	Normal 4N Wire			High Performance 4N wire		High Tensile Strenght 4N wire	4N	3N	2N
Wire Type	M	L	T	UB	UN	UL	SUB	UR2	LK	R
B/L(gr)	≥4.5	≥5.5	≥5.5	≥6.0	≥6.0	≥6.0	≥6.0	≥6.0	≥6.0	≥6.0
B/L(gr)	2-7	2-7	2-7	2-8	2-8	2-8	2-8	2-8	2-8	2-9
HAZ length(um)	200-250	110-140	140-170	100-130	75-95	70-90	100-130	80-100	70-80	120-140
Loop Height(um)	Min.180	Min.100	Min.130	Min.70	Min.50	Min.50	Min.70	Min.50	Min.50	Min.80
Loop length(um)	Max.150	Max.160	Max.200	Max.200	Max.180	Max.200	Max.180	Max.200	Max.200	Max.200
Application	PLCC,DIP,SOJ,SOP	TSOP,TQFP	QFP,BGA,SBGA	QFP,BGA,FPP,CSP	QFP,BGA,FPP,CSP	CSP,BGA,MCP,LED	FPP,Low-k	BGA,MCP,Low-k	FPP,Low-k	BGA,CSP,QFP

MKE