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Author Topic: Ideal hot plate temperature for rework / preheating?  (Read 1947 times)

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Offline nctnicoTopic starter

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Ideal hot plate temperature for rework / preheating?
« on: March 14, 2017, 01:47:20 am »
I'm wondering what temperatures people prefer when using a hot plate to preheat a board for hot-air rework?
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Offline mcinque

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Re: Ideal hot plate temperature for rework / preheating?
« Reply #1 on: March 14, 2017, 12:21:50 pm »
I heard 150°C but I guess the preheat time it can be influenced by the number of layers and the heat mass of the ground planes.
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Online 2N3055

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Re: Ideal hot plate temperature for rework / preheating?
« Reply #2 on: March 14, 2017, 12:26:42 pm »
120C is good starting point . It will evaporate water, still low and easy on stress, and significantly lowering amount of heat to reflow.
Test and slowly increase if needed.

That works for me.
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Offline richardlawson1489

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Re: Ideal hot plate temperature for rework / preheating?
« Reply #3 on: March 17, 2017, 09:56:32 am »
I think it would be 100° to 125°C.
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