Persona glutino, etiam larva interclusio solida nota, tenui polymerorum strato usus est PCB tabula ne solida compagibus faciendi pontium. larva etiam glutino oxidatio impedit et vestigia aeris in tabula PCB applicata.

What is PCB solder resistance type? The PCB welding mask acts as a protective coating on the copper trace line to prevent rust and prevent solder from forming Bridges that lead to short circuits. Sunt 4 principalia genera personarum glutino PCB – epoxy liquidae, liquidae photogramable, pelliculae photogramable aridae, ac supremi et ima larvae.

Quattuor genera personis glutino

Personae glutino variantur in fabrica et materia. Quomodo et quae glutino larva ad usum applicationis dependeant.

Summo et in imo parte cover

Top et Bottom welding larva Electronic fabrum saepe utuntur ad aperitiones ad recognoscendas in strato viridi solidi obice. Iacuit pre-additum ab epoxy resina vel technicae pelliculae. Fibulae componentes dein ad tabulam redacti sunt utens aperitione descripti cum larva.

The conductive trace pattern on the top of the circuit board is called the top trace. Similis larva lateris suprema, imo lateris larva in aversa parte circuli tabulae adhibetur.

Epoxy aqua solidaribus larva

Epoxy resins are the cheapest alternative to welding masks. Epoxy is a polymer that is screen printed on a PCB. Tegumentum excudendi est processus excudendi, quo rete fabricae utitur ad exemplar atramentum interclusionis sustinendum. The grid allows identification of open areas for ink transfer. In the final step of the process, heat curing is used.

Optical liquid larva solida imaginatio

Liquida larvae photoconductivae, etiam ut LPI, sunt mixta actu duorum liquorum diversorum. Liquid components are mixed prior to application to ensure a longer shelf life. It is also one of the more economical of the four different PCB solder resistance types.

LPI adhiberi potest ad tegumentum typographicum, velum pictura vel imbre applicationes. The mask is a mixture of different solvents and polymers. Quam ob rem, tenues coatinges extrahi possunt quae in superficiei regionis scopo adhaerent. Haec larva ad personas solidandas destinatur, sed PCB nullam requirit finalem tunicam quae hodie vulgo in promptu est.

E contra atramentarium vetustioribus epoxy, LPI persentit ut lux ultraviolacea. Tabula operitur larva. Post breve “cycli remedium” tabula exposita est ad lucem ultravioletam utens photolithographiae vel laseris ultraviolacae.

Before applying the mask, the panel should be cleaned and free of oxidization. Hoc ope solutionum chemicarum specialium fit. Id etiam fieri potest utendo solutione alumina vel scalpendo tabulas pumice suspenso.

One of the most common ways to expose panel surfaces to UV is by using contact printers and film tools. The top and bottom sheets of the film are printed with an emulsion to block the area to be welded. Use the tools on the printer to fix the production panel and film in place. The panels were then simultaneously exposed to an ULTRAVIOLET light source.

Alia ars lasers utitur ad imagines directas creandas. But in this technique, no film or tools are needed because the laser is controlled using a reference mark on the panel’s copper template.

Larvae LPI variis coloribus inveniuntur, in iis viridibus (matte vel semi-glossa), alba, caerulea, rubra, flava, nigra, et plura. Industria et laser applicationes DUCTUS in industria electronicorum artifices et designatores adhortantur ut fortiores materiae albae et nigrae excolantur.

Arida film photoimaging larva

A dry film photoimagable welding mask is used, and vacuum lamination is used. Sicca deinde pellicula exposita et amplificata est. After the film is developed, openings are positioned to produce patterns. Postea elementum in nervum redactum est. Aeris igitur laminatur in tabulam ambitum utens processu electrochemico.

Aeris in cavo iacuit et in area vestigii. Tandem plumbi plumbi usus est, ut circuitus aeris protegat. In the final step, the membrane is removed and the etching mark is exposed. Modus etiam medendi caloris utitur.

Dry film welding masks are commonly used for high-density patch boards. Unde per foramen non infundit. These are some of the positives of using a dry film welding mask.

Decernens quod persona glutino utendi a variis causis pendeat – inclusa corporis magnitudine PCB, applicationis finalis adhibendae, foraminum, partium adhibendorum, ducentium, extensionis superficiei, etc.

Maxime moderni PCB consilia consequi possunt photoimageable solida resistendi cinematographica. Therefore, it is either LPI or dry film resistance film. The surface layout of the board will help you determine your final choice. If the surface topography is not uniform, the LPI mask is preferred. If a dry film is used on uneven terrain, gas may be trapped in the space formed between the film and the surface. Therefore, LPI is more suitable here.

Sunt tamen deterius utendo LPI. Its comprehensiveness is not uniform. You can also get different finishes on the mask layer, each with its own application. For example, in cases where solder reflow is used, the matte finish will reduce solder balls.

Build solder masks into your design

Aedificare solida resistendi pelliculas in consilio tuo necessarium est curare ut applicatio larva ad meliorem gradum sit. When designing a circuit board, the welding mask should have its own layer in the Gerber file. In general, it is recommended to use a 2mm border around the function in case the mask is not fully centered. Minimum 8mm inter paduum etiam debes relinquere ut pontes non forment.

Thickness of welding mask

Thickness Welding mask will depend on the thickness of the copper trace on the board. In genere, larva glutino 0.5mm praefertur lineae vestigii larva. If you are using liquid masks, you must have different thicknesses for different features. Area laminae vacuae crassitudinem 0.8-1.2mm habere potest, areae autem cum complexu qualium genuum extensiones tenues habebunt (circiter 0.3mm).

conclusioni

In summa, consilium larva glutino gravis ictum in applicatione functionality habet. Vitalis munus est pontium rubiginem et glutino arcendam, quae ad breves circuitus ducere potest. Quapropter consilium vestrum varias causas in hoc articulo considerare oportet. Spero hunc articulum melius adiuvare vos posse intelligas typum PCB resistentiae cinematographici. Si quas quaestiones habes, vel tantum opus est ut nos tangas, semper te adiuvandum laeti sumus.