Also, Z-axis CTE is several times the X/Y CTE.
Tim Reeves
ECD

|-----Original Message-----
|From: Bill Christoffel [mailto:[log in to unmask]]
|Sent: Thursday, January 25, 2001 1:36 PM
|Subject: Re: TCE for FR-4
|
|
|CTE Numbers that I use are typically:   X-axis 14ppm/C (from
|ambient to Tg)
|                                                      Y-axis
|13ppm/C (from ambient to Tg)
|
|Note Tg for FR 404 is 150C  and FR 406 is 170C
|
|
|Bill C.
|NorLux Corp.
|
|
|-----Original Message-----
|From: TechNet [mailto:[log in to unmask]]On Behalf Of Mark Gilbert
|Sent: Thursday, January 25, 2001 3:19 PM
|To: [log in to unmask]
|Subject: [TN] TCE for FR-4
|
|
|Does anyone know the thermal coefficient of expansion for FR-4 offhand?
|
|Best Regards,
|Mark Gilbert, Product Engineer
|FOX Electronics
|For Frequency Control Solutions. . . Fast:
|1-888-GET2FOX, ext. 2289
|Direct Line: 941-690-2289
|Fax: 941-693-1554
|
|http://www.foxonline.com/

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