Closest I'd go for would be page 20 of IPC-SM-785 ;
Consumer category for 1 year ; leadless (SMD's) ask you for 320 cycles .
Then you cycle 2 lots ("stored" and fresh) side by side (you may need two
event loggers)
to death or whenever you'll be happy with visibility of results,
and interpolate the difference, = stored "effect" .
this one is bit time consuming ; somebody may know something fastest .
Make sure you use absolutely the same profile = all samples same firing day
; slightest difference would throw the readings useless .

See you Vincent

Paul Klasek
http://www.resmed.com

-----Original Message-----
From: BADA [mailto:[log in to unmask]]
Sent: Tuesday, 4 May 1999 17:52
To: [log in to unmask]
Subject: [TN] Simulation of PCB ageing
Sensitivity: Confidential


Hi

How to simulate a Pcb ageing equivalent to a one year storage ?

Is there any standard about this subject ?

Thank you,

Vincent Bada
Process Engineer
Alcatel Etca
Charleroi
Belgium

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following
text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section
for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or
847-509-9700 ext.312
################################################################

################################################################
TechNet E-Mail Forum provided as a free service by IPC using LISTSERV 1.8c
################################################################
To subscribe/unsubscribe, send a message to [log in to unmask] with following text in the body:
To subscribe:   SUBSCRIBE TechNet <your full name>
To unsubscribe:   SIGNOFF TechNet 
################################################################
Please visit IPC's web site (http://www.ipc.org) "On-Line Services" section for additional information.
For technical support contact Hugo Scaramuzza at [log in to unmask] or 847-509-9700 ext.312
################################################################