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Will the post-programming screening affect MCU reliability?

Latest Updated:03/01/2005

Question:

(ROM)   I mistakenly screened the one-time PROM (150 degrees C for 40 hours) before programming with a PROM programmer. Post-programming testing requires a re-screening. Will this second screening affect MCU reliability? [2005/03/01]

Answer:

Although a second screening for 40 hours at 150 degrees C will not affect the reliability of the MCU, take care not to expose the MCU to an elevated temperature of 150 degrees C for more than 100 hours total. (#104888)
Suitable Products
3850A
7544