Hi,
Do anyone had any pcb Mfg Note for OSP finishing.
Rdgs
Adeline
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Edward Szpruch
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Subject
Re: [LF] PCB Mfg. Note for ENIG
03/23/2006 01:43 finish
PM
Please respond to
"(Leadfree
Electronics
Assembly Forum)"
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>; Please respond
to
Edward Szpruch
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Some of your notes such as notes 3 , 5 ,9 have nothing with ROHS
Note 4 : I would write "Finishing" instead of "Plating". Add here some
special request concerning thickness if requred.
Edward
> -----Original Message-----
> From: Frank W [SMTP:[log in to unmask]]
> Sent: ג מרץ 21 2006 21:44
> To: [log in to unmask]
> Subject: Re: [LF] PCB Mfg. Note for ENIG finish
>
> Here's what we propose to use
>
> 1. ALL MATERIALS ARE TO BE ROHS COMPLIANT.
> FABRICATE PER ANSI/IPC-A-600,IPC-QE-605,
> IPC-4101,IPC-4552 AND IPC-SM-840 SPECIFICATIONS.
>
> 2. MATERIAL: .056 THK (.062 MAX) ROHS COMPLIANT
> FR-4 PER IPC-4101 WITH MINIMUM Tg 170 DEGREES C OR HIGHER,
> Td 340 DEGREES C OR HIGHER AND FLAME RATED UL 94V-0.
>
> 3. STACK-UP TO BE SYMMETRICAL ABOUT CORE.
> .005" TRACES ON LAYER 1 ARE 75 OHMS NOMINAL REFERENCES TO LAYER 2.
> .010 WIDTH/.010 SPACE TRACES ON LAYER 1 ARE 100 OHMS (DIFFERENTIAL
> PAIR)
> NOMINAL REFERENCED TO LAYER 2. SEE LAYER STACK (FIGURE 1)
>
> 4. PLATING TO BE ROHS COMPLIANT PER IPC-4552.
> ELECTROLESS NICKEL/IMMERSION GOLD.
>
> 5. UNLESS OTHERWISE SPECIFIED, ALL HOLES TO BE PLATED.
> VIAS TO BE PLUGGED AND TENTED, SURFACE TO BE FLAT ON PRIMARY SIDE.
>
> 6. SOLDERMASK BOTH SIDES OF BOARD OVER BARE COPPER WITH ROHS
> COMPLIANT MATERIAL PER ANSI/IPC-SM-840,
> COLOUR SHALL BE GREEN.
>
> 7. APPLY SILKSCREEN TO BOTH SIDES OF BOARD USING NON-CONDUCTIVE
> ROHS COMPLIANT WHITE EPOXY INK.
>
> 8. PCB MANUFACTURE LOGO, UL MARKING, DATE-CODE
> AND ROHS COMPLIANT SYMBOL TO BE APPLIED ON SOLDER SIDE IN AREA SHOWN
>
> 9. CARD EDGE CONNECTOR TO BE ELECTROLYTIC HARD GOLD PLATED
> OVER NICKEL (150-200 MICROINCH NICKEL/50 MICROINCH GOLD)
> AND BEVELLED, SEE DETAIL "A"
>
> 10. PACKAGED PCBS TO HAVE NORPAK PART NUMBER LATEST REV
> AND "ROHS COMPLIANT" PLACED ON EACH PACKAGE.
>
>
>
> [log in to unmask] wrote:
>
> > We are ordering our first beta runs of ENIG finish boards. What notes,
> > if any, are people using to communicate specific info about the finish
> > (such as in a README file to the PCB fab house)?
> >
> >
>
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