Air-Vac DRS27, User Manual

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DRS27 User’s Guide Chapter 5: Process Development Guide/Engineering Training
0027.00.902 5-33
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Change “Time Above” box (A) to 217 (Lead-Free), 183 (Tin Lead).
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Preheat – Verify that max top side board temperature (B) did not exceed 190C (ok 167C).
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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).
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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).
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Maximum package temperature should not exceed 260 (ok 248C).
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The thermal profile can be printed (F) for permanent record keeping.
F
B
E
E
D
D
C3
A
C1 C2