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Reflow Profile - Seiko SC-20S Manual

Quartz crystal unit

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[9] Reflow Profile
T
e
m
p
Pre-Heating temperature:+170℃   Pre-Heating time:120sec
Heating temperature      :+220℃   Heating time      : 50sec
+260 ℃ peak
+250±10 ℃
+220 ℃
+170±10 ℃
Note: 
 (1) The temperature used herein means the temperature on the circuit board.
 (2) Reflow is permitted 2 times.
120±20 sec.
Time(sec)
10/11
10±1 sec.
50±10 sec.

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