ozi

Ebiputere: Febụwarị 15, 2022

Otu:Blọọgụ

Tags:pcb, pcbs, pcba, pcb mgbakọ, smt, stencil

Kedu ihe bụ PCB Stencil?

PCB Stencil, nke a makwaara dị ka ntupu igwe, bụ mpempe akwụkwọ stai

igwe anaghị agba nchara nwere oghere ịkpụ laser iji nyefee ezigbo ego nke tapawa ihe na-aga n'ihu gaa n'ọnọdụ ziri ezi ahapụtara na PCB na-enweghị ihe ọ bụla maka ntinye akụkụ ugwu ugwu.Ihe mejupụtara stencil ahụ bụ etiti stencil, ntupu waya na mpempe igwe.Enwere ọtụtụ oghere na stencil, na ọnọdụ nke oghere ndị a kwekọrọ na ọnọdụ ndị achọrọ ka ebipụta na PCB.Isi ọrụ nke stencil bụ itinye n'ụzọ ziri ezi n'ụzọ ziri ezi ego nke solder mado na pads nke mere na solder nkwonkwo n'etiti pad na akụrụngwa zuru okè n'usoro nke eletriki njikọ na n'ibu ike.

Mgbe a na-eji ya, tinye PCB n'okpuru stencil, Ozugbo

A na-edozi stencil nke ọma n'elu osisi ahụ, a na-etinye pasta solder n'elu oghere.

Mgbe ahụ, a na-awụpụ tapawa ihe na-ere ihe n'elu PCB site n'obere oghere n'ọnọdụ a kapịrị ọnụ na stencil.Mgbe a na-ekewapụ foil nchara na bọọdụ ahụ, tapawa solder ga-adị n'elu bọọdụ sekit, dị njikere maka ntinye nke ngwaọrụ mgbago elu (SMDs).A na-egbochi tapawa obere ihe na stencil, ka a na-edobe ya na PCB.Enwere ike ịmegharị usoro a ugboro ugboro n'ụzọ ziri ezi, ya mere ọ na-eme ka usoro SMT dị ngwa ngwa ma na-agbanwe agbanwe ma hụ na ọnụ ahịa PCB na-akwụ ụgwọ.

Kedu ihe ejiri PCB Stencil mee?

A na-emekarị stencil SMT nke stencil frame, ntupu na

igwe anaghị agba nchara, na gluu.A na-etinyekarị stencil etiti bụ etiti rapaara na ntupu waya na gluu, nke dị mfe ịnweta esemokwu mpempe akwụkwọ edo edo, nke na-abụkarị 35 ~ 48N / cm2.Ntupu bụ maka idozi mpempe ígwè na etiti.Enwere ụdị ntupu abụọ, igwe anaghị agba nchara na ntupu polyester polymer.Nke mbụ nwere ike inye mgbakasị kwụsiri ike ma zuru oke mana ọ dị mfe nrụrụ na iyi.Otú ọ dị, nke ọzọ nwere ike ịdịru ogologo ma e jiri ya tụnyere nchara igwe anaghị agba nchara.Mpempe akwụkwọ stencil nakweere n'ozuzu bụ 301 ma ọ bụ 304 igwe anaghị agba nchara nke doro anya na-eme ka arụmọrụ nke stencil dịkwuo mma site na akụrụngwa ya dị mma.

Usoro mmepụta nke Stencil

Enwere ụdị stencil asaa na ụzọ atọ maka imepụta stencil: kemịkalụ kemịkalụ, ịcha laser na electroforming.A na-ejikarị ya eme ihe bụ laser steel stencil.Las

er stencil bụ nke a na-ejikarị na ụlọ ọrụ SMT, nke e ji mara bụ:

A na-eji faịlụ data ozugbo iji belata njehie nrụpụta;

Ọnọdụ mmeghe ziri ezi nke SMT stencil dị oke elu: njehie usoro niile bụ ≤± 4 μm;

Mmeghe nke SMT stencil nwere geometry, nke bụ conduci

ve na-ebi akwụkwọ na ịkpụzi nke solder mado.

Laser ọnwụ usoro eruba: film eme PCB, na-ewere nhazi, data faịlụ, data nhazi, laser ọnwụ, egweri.Usoro bụ na elu data mmepụta ziri ezi na obere mmetụta nke ebumnobi ihe;Oghere trapezoidal na-eme ka ọ daa mbà, enwere ike iji ya mee ihe maka ịkpụzi nkenke, ọnụ ala dị ọnụ ala.

General chọrọ na ụkpụrụ nke PCB Stencil

1. Iji nweta a zuru okè ebipụta nke solder mado na PCB pads, kpọmkwem ọnọdụ na nkọwa ga-hụ na elu oghere izi ezi, na oghere ga-abụ nke siri ike dabere na kpọmkwem oghere ụzọ zoro aka na fiducial akara.

2. Iji zere ntụpọ ndị na-ere ere dị ka ngebichi na beads, oghere nwere onwe ya ga-emepụta ntakịrị ntakịrị karịa nha PCB.mkpokọta obosara agaghị agafe 2mm.Ebe nchekwa PCB kwesịrị ịdịkarịa karịa ụzọ abụọ n'ụzọ atọ nke mpaghara ime mgbidi oghere nke stencil.

3. Mgbe ị na-agbatị ntupu, jikwaa ya nke ọma, na pa

y nlebara anya pụrụ iche na oghere oghere, nke ga-abụrịrị kehoraizin na etiti.

4. N'elu ebe obibi akwụkwọ dị ka n'elu, oghere dị ala nke ntupu ga-abụ 0.01mm ma ọ bụ 0.02mm n'obosara karịa oghere elu, ya bụ, oghere ahụ ga-atụgharị conical iji kwado ntọhapụ dị irè nke tapawa solder ma belata ihicha. oge nke stencil.

5. Mgbidi ntupu aghaghị ịdị nro.Karịsịa maka QFP na CSP nwere oghere na-erughị 0.5mm, a chọrọ onye na-eweta ya ka ọ na-eduzi electropolishing n'oge usoro mmepụta.

6. N'ozuzu, nkọwa oghere stencil na ọdịdị nke SMT components na-adaba na pad, na oghere oghere bụ 1: 1.

7. Ọkpụkpụ ziri ezi nke mpempe akwụkwọ stencil na-eme ka ntọhapụ

nke chọrọ ego nke solder mado site oghere.Ntụnye ihe na-ere ihe ọzọ nwere ike ime ka nbido na-ere ihe ebe ọ bụ na obere nkwụnye ego ga-eme ka nkwonkwo solder na-esighị ike.

Kedu ka esi emepụta PCB Stencil?

1. A na-atụ aro ngwugwu 0805 ka ọ belata paịlị abụọ nke oghere site na 1.0mm, wee mee ka concave okirikiri B = 2 / 5Y;A = 0.25mm ma ọ bụ a = 2/5 * l mgbochi tin bead.

2. Chip 1206 na n'elu: mgbe ejiri 0.1mm na-emegharị pad abụọ ahụ n'èzí, mee gburugburu concave n'ime B = 2 / 5Y;A = 2/5 * l ọgwụgwọ bead mgbochi mgbochi.

3. Maka PCB na BGA, oghere mmeghe nke stencil nwere oghere bọọlụ karịa 1.0mm bụ 1: 1, na oghere oghere nke stencil na oghere bọọlụ nke na-erughị 0.5mm bụ 1: 0.95.

4. Maka QFP niile na SOP nwere oghere 0.5mm, rati mmeghe

o na mkpokọta obosara ntụziaka bụ 1:0.8.

5. Ngwunye oghere na ntụziaka ogologo bụ 1: 1.1, na 0.4mm pitch QFP, oghere na ngụkọta obosara ntụziaka bụ 1: 0.8, oghere n'ogologo ogologo bụ 1: 1.1, na mpụta okirikiri ụkwụ.Chamfer radius r = 0.12mm.Mkpokọta obosara oghere nke SOP element na 0.65mm pitch na-ebelata site na 10%.

6. Mgbe PLCC32 na PLCC44 nke n'ozuzu ngwaahịa na-perforated, ngụkọta obosara direction bụ 1: 1 na ogologo ntụziaka bụ 1: 1.1.

7. N'ihi na izugbe SOT ngwugwu ngwaọrụ, oghere ruru

nke nnukwu mpe mpe akwa bụ 1: 1.1, ntụzịaka obosara nke obere mpe mpe akwa bụ 1: 1, na ntuziaka ogologo bụ 1: 1.

KeduIji PCB Stencil?

1. Jikwaa nke ọma.

2. A ga-ehichapụ stencil tupu ejiri ya.

3. A ga-etinye pasta ma ọ bụ ihe na-acha uhie uhie n'otu n'otu.

4. Gbanwee nrụgide mbipụta ka ọ kacha mma.

5. Iji mpempe akwụkwọ mpempe akwụkwọ.

6. Mgbe scraper ọrịa strok, ọ kacha mma ịkwụsị 2 ~ 3 sekọnd tupu demoulding, na-eme ka demoulding ọsọ ọ bụghị ngwa ngwa.

7. A ga-ehichapụ Stencil n'oge, chekwaa nke ọma mgbe ejiri ya.

Ọrụ nrụpụta Stencil nke PCB ShinTech

PCB ShinTech na-enye ọrụ nrụpụta igwe anaghị agba nchara laser.Anyị na-eme stencil na ọkpụrụkpụ nke 100 μm, 120 μm, 130µm, 150 μm, 180 μm, 200 μm, 250 μm na 300 μm.Faịlụ data achọrọ iji mee ka stencil laser ga-enwerịrị SMT solder tapawa oyi akwa, data akara, PCB ndepụta oyi akwa na oyi akwa agwa, yabụ anyị nwere ike lelee akụkụ ihu na azụ nke data, ụdị akụrụngwa, wdg.

Ọ bụrụ na ị chọrọ nkwute okwu biko ziga faịlụ gị na ajụjụsales@pcbshintech.com.