PCB pu faʻatulagaina o se taua taua soʻoga i PCB mamanu faʻagasologa e faʻamautinoa ai le nofoaga faapitoa o PCB ala pu. The role of the positioning hole is printed circuit board manufacturing processing benchmark. PCB positioning hole positioning methods are various, mainly according to different positioning accuracy requirements. Faatulaga pu i luga o lolomi laupapa matagaluega o le a fai ma ona sui e faʻapitoa ata faʻailoga. When the requirements are not high, the larger assembly hole in the printed circuit board can be used instead.

Ina ia faʻafaigofie le lolomiina laupapa matagaluega viliina ma milling foliga faʻamau laupapa, faʻapea foi ma talafeagai i luga o le initaneti suʻesuʻega, tele matagaluega laupapa gaosi faʻamoemoe tagata faʻaoga e mamanuina tolu nonmetallic pu i luga o le PCB, faʻatulagaina pu e masani lava ona fuafuaina i nonmetallic pu, viliina lapoa o mm poʻo le mm. Smmo pe a fai e mau le laupapa, a itiiti mai e lua faʻatulagaina pu e tatau ona tuʻuina, ma tuʻu faʻasolosolo. If you make a jigsaw board, you can also think of the jigsaw board as a PCB, the whole jigsaw board as long as there are three positioning holes. A faʻapea e le tuʻu le mea e faʻaaoga, e otometi lava ona faʻaopopo le kamupani gaosi laupapa i luga o le faʻavae e le aʻafia ai le laina, pe faʻaaoga ai pu elemeni o loʻo i ai i totonu o le laupapa e faʻaputu i ai pu.

Nofoaga nofoaga puʻupu auala

Device hole Interface devices and connectors are mostly plug-in components. O le ala pu lapoa o le faaofiina masini e tele atu nai lo le pine lapoa o 8 ~ 20mil, ma le apa tuia e lelei i le taimi o maopoopo. E tatau ona maitauina o loʻo i ai se mea sese i le gatu o le fale laupapa matagaluega, ma o le lata tusa o le 0.05mm. 0.05mm o se ituaiga o vili i vavaega taʻitasi, ma 0.lmm o se ituaiga o vili i vavaega taʻitasi pe a fai o le lautele o loʻo i luga 3.20mm. O le mea lea, pe a fuafuaina le gauga o le masini, o le iunite e tatau ona liua i millimeter, ma le faʻamalama e tatau ona fuafuaina o se aofaʻi faʻatumuina o 0.05. O le ipu gaosi setiina le viliina mea faigaluega tele e tusa ma le viliina faʻamatalaga saunia e le tagata faʻaaoga. O le tele meafaigaluega viliina masani lava 0.1 ~ 0.15 lapoʻa nai lo le fausiaina pu e manaʻomia e le tagata faʻaaoga. O le lautele o le mmo design e tatau ona lapoʻa nai lo le laʻititi, ma o le faʻapalepale manaʻoga e tatau foi ona lapoʻa nai lo laʻititi. If it is a crimping device, the aperture should not be increased, according to the data recommended design, and in the instructions to explain what is crimping device, so that the circuit board manufacturer can try to control the error in the process of making the board, to avoid some unnecessary trouble.

Viliina ituaiga e vaevaeina i metalaʻi pu ma nonmetalized pu. O loʻo faʻatupuina apamemea i le puipui o le pu metallized, lea e mafai ona faia se conductive matafaioi ma o loʻo avea ma sui o le PTH. E leai se apamemea i le pu puipui o le nonmetallic pu, o lea e le mafai ai ona faʻataʻitaʻi le eletise. O loʻo faʻailoa mai e le NPTH. O le eseesega i le va o le fafo lapoa ma le pito i totonu lapoa o le metallized pu lapoa e tatau ona sili atu nai lo 20mil, a le o lea o le uelo mama o le pad e laʻititi tele mo le gaosiaina ma e le faʻamafanafanaina i uelo. Afai e faʻatagaina tulaga, e mafai ona fuafuaina le avanoa e avea o le faataamilosaga o le pad. O le lapoa pu lapoa o uamea pu o 6.35mm, ma le maualuga lapoa pu o le nonmetal pu o 6.5mm. O le pu metallized le tatau ona fuafuaina luga o le contour laina. O le pu pito e tatau ona sili atu ma le 1mm le mamao mai le laina faʻavasega. Cobalt hole heavy hole easily damage the drill, so should be avoided as much as possible. A aunoa ma ueloina ma leai eletise leai-uʻamea pu, pu mafai ona fuafuaina i le uiga o le nonmetallic uʻamea ipu pu e le manaʻomia e mamanuina, laina poʻo le apamemea foil a itiiti mai 1 mmo viliina pu pu pito mamao e tusa ai ma le foliga mafai ona vaevaeina i liʻo pu ma faatafafā pu, masani viliina mo le lapotopoto pu, faatafafā pu o si tusa ai ma taualumaga faatonuina e le tele o taimi o viliina, o lea o le tafafā lua puʻeina sili tuputupu ae e faalua le lautele, Ma o le lautele e le itiiti ifo i le 0.8mm, laititi e mafai ai e mamanu faʻasasaʻo pu.

PCB positioning hole requirements:

The development of PCB design industry has become mature, so the requirements for PCB positioning holes are also very perfect. O le faʻatutuina pu e tatau ona faʻamalieina i lalo manaʻoga.

1. Install at least two positioning holes on the diagonal of the board.

2. The standard aperture of the positioning hole is 3.2mm _+0.05mm.

3, mo oloa eseese o le veneer pisinisi mafai foi ona faʻaaogaina le gaioiga fiafia i lalo: 2.8mm ± 0.05mm, 3.0mm ± 0.5mm, 3.5mm ± 0.5mm ma 4.5mm ± 05mm. Mo laupapa eseese o le tutusa oloa (pei o le DT laupapa ma le PP laupapa o ZXJlO), pe a fai o le PCB e tutusa itu, e tatau ona tutusa pu faʻatulagaina.

4. The positioning hole is a light hole, that is, a nonmetallic through hole (except rf board).

5. Afai o loʻo i ai faʻaputuga pu (seʻi vagana le faʻamau faʻaputuga pu) faʻamalieina i luga manaoga, e leai se manaʻoga e seti se isi tulaga pu.

Nisi faʻamatalaga masani ma le saʻo manaʻoga mo faʻatulagaina pu:

1. O le lautele lapoa mea sese o le pu faʻatulagaina e masani lava i totonu o 0.01mm. Afai o le mea sese e tele i PCB fale gaosi oloa, o le a mafua ai le lelei le faʻafesoʻotaʻiga o le suʻesuʻega ma le saʻo o gaioiga o le soʻotaga fesoʻotaʻiga i le faʻaofiina otometi auala.

2, le lautele o le faʻatulagaina pu manaʻoga: taumafai ia i lalo o le 3mm, ina ia o le faʻatulagaina pou o le a le faʻaletonu, tele tele ma le talafeagai e faʻagaioia ai.

3, faʻatulagaina pu PCB mamao laina: sili atu nai lo 1MM, ina ia le faʻapipiʻiina gaioiga e le faigofie e puʻupuʻu taamilosaga, foi o le a le mafua ai le faʻaleagaina o le oloa auala.

4, the type of positioning hole: positioning hole is generally the need for mechanical control of unsinkable copper, so that it can not be connected with the circuit on the board and higher accuracy.

5, positioning bladder layout: need to be in the PCBA four corners or diagonal, so as to form a multi-point plane positioning, positioning accuracy, the farther the better.

6, o le mamao i le va o le pu faʻatulagaina ma le suʻega itu e tatau ona le itiiti ifo ma le 2mm, e puipuia ai le sese le faʻasologa i le suʻega.

7. O le mamao i le va o le pu faʻatulagaina ma le pito o le ipu mafolafola o le sili atu 2mm, lea e le faigofie ona taʻei a o mautinoa le malosi o PCBA.