CP40培训说明书 - 第6页

2 󱯵󲗶 󱾫󱦬 SMT 󱯵󲗶 / 󳒓󲖙󳒓󲩥󲗶󳒓󰬨󲩥󲗶󳒓󰬨󲩥󲗶󱡺 3 󰸻󰃖 󰋪󱦬 3  1 󰨓 󰸻󰃖 󲴺󲹾󰸻󰑫󲩥󰽸󱸧󰸻󰸻󰋊󲩥󰽸󱸧󰪳󰊨󰑠󱉙󰻅󲒾󰸻󰋊󱃠󰩲󱎵󰨓󳒓󲗶󰐺 SMD 󱎵󰒰󰃖󲜗󱴽󰸻󰃖 3  2  󰩲󰸻󰃖 󰸞󰋪󰐺󱯓󱯰󱯓󱯰…

SMT?

󰍠󲀢󰊸Surface mount Technology 󱎵󱱚󲖙󳒓󲩥󲗶󰑠󱎵󰒖󲤥SMT󱉢󲖙󳒓󲩥󲗶

Surface mounted components (SMC)Surface mounted devices SMD󲩥󲗶󰑠󲩥󲗶󲣯

󲸙󱯵

SMT󰋪

1󰀺󰺘󲖙󳒓󲩥󲗶󱉙󰒁󰋊󱸧󰥥󳉒󱻀󱛾󰋪

11󲩥󰽸󱸧

󲩥󰽸󱸧󰾪󰢻󱎵󱧉󰃖󱽝󲖙󳒓󲩥󲗶󲻸󱉙󰨓󰸻󰃖󱾫󱉙󱉙󰍠󰸻󰃖SMD

󳖵󰒰󱎵󰀸󱲟

󲩥󰽸󱸧󱯵

󱃠󰥘󰕂󱸳63%󲻾󲼀󰤅

󰌑󰑫󰋊30%

󱸫󱨬4%

󰌑󰑫󳗍󰋊3%

󲩥󰽸󱸧󰉯󱃠󱽝510℃󱣢󱉙󱸧󱲟󰭚24󰌧󰑫󱉙

12󰸻󱻀

󰸻󱻀󰍠󱛾󰸻󰋊󲼂󱦺󰑜󰸻󱎵󰬨󰾚

SMT󱉙󰸻󱻀󲼂󱯵Sn63Pb37\Sn62Pb36Ag2.

󰸻󱻀󱎵󰐱󰉯󰭚󰮰󱎵󱣢󰭚510℃󰸻󱻀󱣢󰌧

󰿧󰭚󰹧󰉯󰄶󰑫󰄶󱲂󰽹󱉙

2󱯵󲗶󱾫󱦬

SMT󱯵󲗶/󳒓󲖙󳒓󲩥󲗶󳒓󰬨󲩥󲗶󳒓󰬨󲩥󲗶󱡺

3󰸻󰃖󰋪󱦬

31󰨓󰸻󰃖

󲴺󲹾󰸻󰑫󲩥󰽸󱸧󰸻󰸻󰋊󲩥󰽸󱸧󰪳󰊨󰑠󱉙󰻅󲒾󰸻󰋊󱃠󰩲󱎵󰨓󳒓󲗶󰐺SMD

󱎵󰒰󰃖󲜗󱴽󰸻󰃖

32󰩲󰸻󰃖

󰸞󰋪󰐺󱯓󱯰󱯓󱯰󰸞󳗿󱯵VPS󰸞󰒰󰳱󱡺󲚲󰍠󲵋󲳸󱯓󱯰󲳁󰸞󳗿󱎵

󰉧󰥐󱨬󰥅󰳱󱎵󰸞󱸮󰒰󰸻󰋊󲴌󲕽󲸙󲸙󰸞

33󰸊󳇲󰸻󰃖

󱉙󰸊󳇲󰸻󳉒SMD󰒰󲴏󰃖󱎵󱉦󰃖󲜗󰸻󰃖󰌧󰸊󳇲󲚲󱐥󰃖󰃖󲜗󱉦󰒲󰸻

󰃖󰌧󳌥󲪶󲳸5󱜃󰌧󰸊󳇲󱎵󰭚󲳸󳠉󱽝󲴺󱉙270℃󱂸30W

4󲩥󲗶󲣯󱦬

41󰀺󲵐󱦬

󰐺󲵐󰑫󲵐󰑫󳠉󲵐󰑫

42󰀺󲩥󲗶󰋪󱦬

4.2.1󰐺󳖫

󰀺󱜼󲵁󳖫󲩥󲗶SMC/SMD󰕪󰂟PCB󱎵󰐥󲤴󰊥󲩥󲗶󱜼

422 󰌧

󱉙󱉙󰋊󱐉󰋊󲵋󲳸󰝒󰒰󰡒󰌧SMC/SMD󲩥󰉯PCB

423 󱯰

󱨬󳖫󲩥󲗶󰑫󰃃󰩲󰥥󱯰󳌥󱉙󲴲󰑫󰒵󲴏󰃖PCB󱉢󲴲󰑫󰒵󲴲󰤀󲩥󲗶󰑫󱎵󲩥󲗶

󲩥󲗶

424 󰌧/󱯰

󰌧󲩥󲗶󰑫󱯵󰩲󰥥󱯰󱯵󱯵󲩥󲗶SMC/SMD

SMT󲛲󲣾󲜔󲻻

Chip: 󱿠󰽸

Ceramic: 󳎧󱈨

Polarity: 󰒲

Stagger: 󳉊󱎵

Hexagon inductor: 󲜃󱎵

Air wound coil: 󱞫󱎵󰋼󲲝󱎵󱐉󱰆󰾚

Crystal oscillator: 󰎧,󰁠󲂒

Criteria: 󰔸󱎵

Notch: 󰜮,

Contour: 󲲟,󲳪

Stable: 󱝤󱎵

Burrs: 󱧈󲳪

Inferior: 󱎵,󱡺󱎵

Reliability: 󳒑󳒑

CSPchip scale package 󰎧󰽸󱯘󲗶

MCMmulti-chip model 󱿠󰽸󱯵

COBchip on board 󰒰󲲮󱿠󰽸

LSIlarge scale integrated circuit 󲛵󰝒󳏷󱉦󲬠LSIC

FCP: flip chip󲗶󱿠󰽸