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I am wondering at what temperature value would this part receive permanent damage and I was unable to find information on its max junction temperature value so if it could also be provided that would be helpful.
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Hello,
Please see below
Tj= Ta + (θJA x Pd)
θJA = Junction-to-ambient thermal resistance (Theta JA) (datasheet)
Ta = Operating Ambient Temperature (datasheet)
Voltage max voltage of the device (datasheet)
Current: Max current defined in the datasheet)
Pd (Power dissipation) = Voltage (V) × Current (I)
Tj= Ta + (θJA x Pd)
= 85°C + (33 ℃/W x (3.6V * 60mA)
= 92.1 °C
This is absolute max Tj.
Thank you
Regards,
Bushra
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How did you come by this number is it in the datasheet or did you just calculate it using the thermal resistance and other values?
Also now that I have this number if I were to work above the operating range say my device is industrial so in the spec it says the max is 85 C, if I were to work above that what kind of issues would arise if you know?
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Hello,
Please see below
Tj= Ta + (θJA x Pd)
θJA = Junction-to-ambient thermal resistance (Theta JA) (datasheet)
Ta = Operating Ambient Temperature (datasheet)
Voltage max voltage of the device (datasheet)
Current: Max current defined in the datasheet)
Pd (Power dissipation) = Voltage (V) × Current (I)
Tj= Ta + (θJA x Pd)
= 85°C + (33 ℃/W x (3.6V * 60mA)
= 92.1 °C
This is absolute max Tj.
Thank you
Regards,
Bushra
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Hello,
"Also now that I have this number if I were to work above the operating range say my device is industrial so in the spec it says the max is 85 C, if I were to work above that what kind of issues would arise if you know?"
Unfortunately it is hard to predict and recommended to follow the spec.
Thank you
Regards,
Bushra