DRS27 User’s Guide Chapter 5: Process Development Guide/Engineering Training
0027.00.902
5-33
•
Change “Time Above” box
(A)
to 217 (Lead-Free), 183 (Tin Lead).
•
Preheat – Verify that max top side board temperature
(B)
did not exceed 190C (ok 167C).
•
Soak – Position first yellow bar
(C1)
where T/C#1 is 170C, second yellow bar
(C2)
where T/C#1
is at 200C. Soak stage
(C3)
should be 45-75 seconds (ok 60 seconds).
•
Reflow – Joints
(D)
should have time above 217C of 45-75 seconds (ok 57 and 58 seconds).
Confirm max joint temperature
(E)
was approximately 240C (ok 241, 235).
•
Maximum package temperature should not exceed 260 (ok 248C).
•
The thermal profile can be printed
(F)
for permanent record keeping.
F
B
E
E
D
D
C3
A
C1
C2
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Страница 222: ...DRS27 User s Guide Chapter 6 Templates Removal Site Clean Replacement 0027 00 902 6 2 ...
Страница 255: ...DRS27 User s Guide Chapter 6 Templates Removal Site Clean Replacement 0027 00 902 6 35 Nozzle cool down Board cool down ...
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