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tulaga faataatitia faava o malo mo manaoga pad

taimi: 2012-05-18

  le 6118 tulaga faatonuina o le International Electrotechnical Komisi Komisi IEC Faava o Malo Eletrotechnical iloa le manaomia o le eseese sini mo solder maio po pad tuutuuga patu. Lenei tulaga fou faava o malo faamaonia auala faavae e lua mo le tuuina atu o faamatalaga i luga o le atinae o siepi pad:

1). faamatalaga sao e faavae i luga o auiliili tau alamanuia vaega, gaosiga PCB laupapa kopi ma tulaga vaega gafatia saʻo. O nei pad foliga ua faatapulaaina i se vaega patino ma maua se numera na faailoa mai ai le ata o le pad.

2). O nisi faamatalaga e mafai ona faaaogaina e suia le faamatalaga ua tuuina atu ina ia ausia a soofaatasi solder tiotio sili, lea e faaaogā i tulaga faapitoa lea ua manatu le saʻo mo mounting po mounting le masini nai lo le taimi fuafuaina o le auiliiliga pad. E sili atu pe itiiti eseesega.

O lenei tulaga ua faamatalaina e le maualuga, feoloolo, ma aiaiga maualalo mea mo moa faaaogaina i le mauga e tuta eseese pine po o vaega. Sei vagana ua taʻu, lenei tulaga faatonuina faailoga uma e tolu sini mananaoe pei Level 1, tūlaga 2 po o Level 3.

tūlaga 1: Max - Mo talosaga oloa maualalo density, le "aupito tele" o loo faaaogaina tuutuuga pad mo tumutumu po tafe soldering vaega malamala leadless ma faamau vaega asa. O le geometry configured mo nei vaega, faapea foi ma le i totonu "T" vaega taʻimua mamanuina, maua ai se faamalama faagasologa lautele mo lima soldering ma reflow soldering.

tūlaga 2: Medium - e mafai ona iloiloina Products ma auala e densities auala vaega mo lenei "mediufeoloolometry pad. O le tele e pei o le IPC-SM-782 geometry pad tulaga faatonuina, a pad auala configured mo ituaiga vaega uma o le a tuuina atu se tulaga mautu soldering mo le faagasologa soldering reflow ma e tatau ona leadless ma fai apaʻau. Talotalo po tafe soldering maua ai le tulaga lelei.

tūlaga 3: itiiti - Products ma densities maualuga vaega e masani ona talosaga oloa feaveai e mafai ona amanaia le "aupito itiiti" geometry laueleele. atonu e le talafeagai le filifiliga o le geometry pad maualalo mo oloa uma. Ao lei faaaogaina le ata pad itiiti, faaaogaina lenei e tatau ona mafaufau i le oloa \ 's constraints ma tofotofoga e faavae i luga o le tuutuuga e faaalia i le laulau.

O le geometries pad aiaia i le IPC-SM-782 ma configured i IEC 61188 e tatau ona nonofo ai vaega tolerances ma fesuiaiga faagasologa. A uma ona moa i tusitusiga IPC tuuina atu se Ofisa mautu mo le tele o tagata e faaaogāina \ 's talosaga faapotopotoga, nisi kamupani ua faaalia le manaomia o le geometries maualalo pad mo feaveai faaeletonika ma isi densities maualuga tulaga ese. talosaga.

O le Standard Faava o Malo Pad (IEC61188) malamalama i le tulaga manaomia mo le density vaega maualuga talosaga ma tuuina atu ai faamatalaga i luga o le geometry pad mo se ituaiga oloa faapitoa. O le faamoemoega o lenei faamatalaga o le tuuina atu i le tele talafeagai, faafuaitino ai ma tolerances o le laualuga mauga moa ina ia mautinoa vaega lava o maio solder talafeagai ma faatagaina asiasiga, suesuega ma le rework o nei sooga solder.