Awọn iroyin - Bii o ṣe le Yan Ipari Ilẹ fun Apẹrẹ PCB RẹⅠ Kini ati Bawo

Bii o ṣe le Yan Ipari Ilẹ fun Apẹrẹ PCB Rẹ

--- Itọsọna Amoye si PCB dada ti pari

Ⅰ Kini ati Bawo

Ti a fiweranṣẹ:Oṣu kọkanlaỌdun 15, Ọdun 2022

Awọn afi: pcb,pcba,pcb ijọ,pcb olupese, pcb iṣelọpọ

Nigba ti o ba de lati pari dada, awọn aṣayan pupọ wa, fun apẹẹrẹ HASL, OSP, ENIG, ENEPIG, Hard Gold, ISn, IAg, bbl Ni awọn igba miiran, o le rọrun lati ṣe ipinnu, gẹgẹbi asopọ eti lọ si lile. wura;HASL tabi HASL-ọfẹ jẹ ayanfẹ fun gbigbe awọn paati SMT nla.Sibẹsibẹ, o le jẹ ẹtan lati yan ipari kan fun awọn igbimọ HDI pẹlu Ball Grid Arrays (BGAs) ti ko ba si awọn amọran miiran.Awọn ifosiwewe bii isuna rẹ fun iṣẹ akanṣe yii, awọn ibeere fun igbẹkẹle tabi awọn idiwọ fun akoko iṣẹ nilo lati gbero lori awọn ipo kan.Kọọkan iru ti PCB dada pari ni o ni awọn oniwe-Aleebu ati awọn konsi, o le jẹ airoju fun PCB apẹẹrẹ lati pinnu eyi ti o jẹ dara fun PCB rẹ lọọgan.A wa nibi lati ṣe iranlọwọ fun ọ lati ṣawari wọn pẹlu iriri ọpọlọpọ ọdun wa bi olupese kan.

1. Ohun ti o jẹ PCB dada pari

Lilo ipari dada (itọju oju-oju / ibora oju) jẹ ọkan ninu awọn igbesẹ ti o kẹhin ti iṣelọpọ PCBs.Ipari dada jẹ wiwo pataki kan laarin igbimọ PCB igboro ati awọn paati, ṣiṣe iṣẹ fun awọn idi pataki meji, lati pese ilẹ ti o le solder fun apejọ PCB ati lati daabobo bàbà ti o ku ti o han pẹlu awọn itọpa, awọn paadi, awọn iho ati awọn ọkọ ofurufu ilẹ lati ifoyina tabi idoti, nigba ti solder boju ni wiwa awọn opolopo ninu awọn circuitry.

Ipari dada jẹ pataki fun iṣelọpọ PCB PCB ShinTech.Lati pese a solderable dada fun PCB ijọ ati lati dabobo awọn fara Ejò lati ifoyina ati idoti.

Awọn ipari dada ode oni jẹ aimọ-asiwaju, ni ibamu pẹlu Ihamọ ti Awọn nkan elewu (RoHS) ati Awọn itọsọna Egbin Itanna ati Ohun elo Itanna (WEEE).Awọn aṣayan ipari oju PCB ode oni pẹlu:

● LF-HASL (Ipele Solder Air Gbona Ọfẹ)
● OSP (Awọn ohun ipamọra Solderability Organic)
● ENIG (Gold immersion Nickel Alailowaya)
● ENEPIG (Electroless Nickel Electroless Palladium Immersion Gold)
● Electrolytic Nickel/Gold - Ni/Au (Gold Lile/Asọ)
● Fadaka immersion, IAg
●Tin White tabi Immersion Tin, ISn

2. Bawo ni lati yan dada pari fun PCB rẹ

Kọọkan iru ti PCB dada pari ni o ni awọn oniwe-Aleebu ati awọn konsi, o le jẹ airoju fun PCB apẹẹrẹ lati pinnu eyi ti o jẹ dara fun PCB rẹ lọọgan.Yiyan eyi ti o pe fun apẹrẹ rẹ nilo gbigbe awọn ifosiwewe pupọ sinu akọọlẹ bi atẹle.

★ Budge
★ Awọn igbimọ Circuit ipari ayika ohun elo (fun apẹẹrẹ otutu, gbigbọn, RF).
★ Awọn ibeere fun olubẹwẹ ọfẹ Lead, ore ayika.
★ Ibeere igbẹkẹle fun igbimọ PCB.
★ irinše iru, iwuwo tabi awọn ibeere fun ijọ eg tẹ fit, SMT, waya imora, Nipasẹ-iho soldering, ati be be lo.
★ Awọn ibeere fun dada flatness ti SMT paadi fun BGA ohun elo.
★ Awọn ibeere fun Selifu aye ati reworkability ti dada pari.
★ mọnamọna / ju resistance.Fun apẹẹrẹ, ENIG ko dara fun foonu ti o gbọn nitori foonu smati nilo awọn iwe adehun tin-Ejò fun mọnamọna giga ati ju resistance silẹ dipo awọn iwe ifowopamosi tin-nickel.
★ Opoiye ati Nipasẹ.Fun iwọn giga ti awọn PCB, tin immersion le jẹ igbẹkẹle diẹ sii ati awọn aṣayan ti o munadoko-owo ju ENIG ati Fadaka Immersion ati awọn ọran ifamọ tarnish le yago fun.Ni ilodi si, fadaka immersion jẹ dara ju ISn ni ipele kekere kan.
★ Ailagbara si ibajẹ tabi ibajẹ.Fun apẹẹrẹ, ipari fadaka immersion jẹ itara si ipata ti nrakò.Mejeeji OSP ati Tin Immersion jẹ ifarabalẹ si mimu bibajẹ.
★ Aesthetics ti awọn ọkọ, ati be be lo.

Padasi awọn bulọọgi

Akoko ifiweranṣẹ: Oṣu kọkanla-15-2022