SA555:About the thermal resistance of SA555DR

tokiyoshi.azusa

Prodigy 20 points

Part Number: SA555

I need data on the package thermal impedance (θJC) of the SA555DR.

Please tell me.

Thank you.

over 2 years ago

0 Chris Featherstone over 2 years ago

TI__Mastermind 28245 points

Hello,

θJA = 131.4 degrees C per Watt

θJC = 73.6 degrees C per Watt

I hope this helps with your application. Let us know if we can be of further assistance.

Best Regards,

Chris Featherstone

0 tokiyoshi.azusa over 2 years ago in reply to Chris Featherstone

Prodigy 20 points

Thank you for your reply.

θJA = 131.4 degrees C per Watt

θJC = 73.6 degrees C per Watt

Is it okay to use the above value as the worst value?

Best Regards,

+1 Chris Featherstone over 2 years ago in reply to tokiyoshi.azusa

TI__Mastermind 28245 points

Hello,

We do not specify thermal information as best or worst values. For a detailed discussion of thermal parameters we have an application report titled Semiconductor and IC package Thermal Metrics that can be found here:

https://www.ti.com/lit/an/spra953c/spra953c.pdf?ts=1706075741221&ref_url=https%253A%252F%252Fwww.ti.com%252Fdocument-viewer%252Fsn74ahc1g04-q1%252Fdatasheet

Best Regards,

Chris Featherstone

Clock & timing

Clock & timing forum

SA555:About the thermal resistance of SA555DR