Hivatkozási szám

MSZ EN 61188-5-8:2008

Dokumentumazonosító

146449

Cím

Nyomtatott lapok és szerelt nyomtatott lapok. Kialakítás és alkalmazás. 5-8. rész: Csatlakoztatási szempontok (felület/kötés). Area-Array típusú alkatrészek (BGA, FBGA, CGA, LGA) (IEC 61188-5-8:2007)

Angol cím

Printed boards and printed board assemblies. Design and use. Part 5-8: Attachment (land/joint) considerations. Area array components (BGA, FBGA, CGA, LGA) (IEC 61188-5-8:2007)

Alkalmazási terület

This part of IEC 61188 provides information on land pattern geometries used for the surface attachment of electronic components with area array terminations in the form of solder balls, solder columns or protective coated lands. The intent of the information presented herein is to provide the appropriate size, shape and tolerances of surface mount land patterns to ensure sufficient area for the appropriate solder joint, and also allow for inspection, testing and reworking of those solder joints. Each clause contains a specific set of criteria such that the information presented is consistent, providing information on the component, the component dimensions, the solder joint design and the land pattern dimensions. The land pattern dimensions are based on a mathematical model that establishes a platform for a solder joint attachment to the printed board. The existing models create a platform that is capable of establishing a reliable solder joint no matter which solder alloy is used to make that joint (lead-free, tin lead, etc.). Process requirements for solder reflow are different depending on the solder alloy and should be analyzed so that the process is taking place above the liquidus temperature of the alloy, and remains above that temperature a sufficient time to form a reliable metallurgical bond. Area array land patterns do not use "land protrusion" concepts and attempt to match the characteristics of the physical and dimensional termination properties. There are several configurations available, as shown in Figure 1. However, the tables provided show only the optimum dimension across the outer construction of the land. Ábra

ICS

31.180 Nyomtatott áramkörök és lapok

Műszaki Bizottság

A szabvány nyelve

angol

Az érvényesség kezdete

2008-11-01

Forrás

idt EN 61188-5-8:2008; idt IEC 61188-5-8:2007

Előd

Utód

Módosítás

SZK-közlemények

Kapcsolódó európai jogszabály

A szabvány

kapható formátuma

Papír ,
PDF (letöltés) (a fájl mérete: 611590) ,

oldalszáma

31 oldal; P kategória

ára

Nettó: 12520 Ft
Bruttó:
Papír formátum esetén (5% Áfával): 15775 Ft
PDF (letöltés) formátum esetén (27% Áfával): 15900 Ft