Hi,Vincent,

You can try to use double solder wave. the chip solder should be high!
Best Regards

Qu Zenglong

Industrial Engineering Department
Production Division
BISC, China
Tel: 0086-10-64346323
Fax:0086-10-64367731
e-mail: [log in to unmask]

----------
From:   Vincent BADA[SMTP:[log in to unmask]]
Reply To:       TechNet E-Mail Forum.;Vincent BADA
Sent:   Thursday, September 30, 1999 2:32 PM
To:     [log in to unmask]
Subject:        [TN] Wave soldering
Sensitivity:    Confidential

Hi all,

What is the minimum vertical fill of solder for plated through holes ?

We have some problems to obtain the 75% requested by IPC-A-610 for a class 2
board.
In fact, the board has a thickness of 3,2 mm.
We use a no-clean flux and the wave is under nitrogen.

Is there any special criteria regarding to the thickness of the board ?
Has anyone succeeded in obtaining a correct solder filet for thick boards ?

Thanks,

Vincent Bada
Process Engineer
Alcatel Etca
Charleroi
Belgium

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