Theta J/B and Theta J/C for AM26LS33A

wlnwtz

Could somebody please provide to me thermal performance data for the subject part? Specifically theta-J/B, theta-J/C, and max junction temperature. Thanks in advance

over 14 years ago

0 Greg Amidon over 14 years ago

TI__Expert 5530 points

Which specific part number? Theta J/B and J/C depend on the package of the device i.e. SOIC or PDIP package.

Regards,

Greg

0 wlnwtz over 14 years ago in reply to Greg Amidon

Prodigy 220 points

It’s the SOIC-D package. What are the values for industrial vs. military spec?

0 Ron Michallick over 14 years ago in reply to wlnwtz

TI__Guru**** 164886 points

Hello Erwin,

The SOIC package is only available in the commercial temperature range of 0C to 70C.
The generic data for 16 pin D is J/B=18.25C/W using a High K model and J/C=38.4C/W using a Low K model. I have requested data specific to the AM26LS32ACD be generated and I will post the results when complete.

The data sheet parameters are guaranteed up to Tj=70C; The device will operate at higher temperature, but there is no specification for performance above 70C.

Regards,
Ron M.

0 wlnwtz over 14 years ago in reply to Ron Michallick

Prodigy 220 points

"The device will operate at higher temperature, but there is no specification for performance above 70C."

This is a concern when we look in the data sheet, I see the maximum “free air temp” is 70C … this is a lot different from junction temperature. Can you clarify?

0 Ron Michallick over 14 years ago in reply to wlnwtz

TI__Guru**** 164886 points

^{Hello Erwin,}

^{Production and failure analysis high temperature testing will be performed at 70C. The test time is short, so Tj will be nearly Ta during testing.}

Regards,
Ron M.

0 Ron Michallick over 14 years ago in reply to Ron Michallick

TI__Guru**** 164886 points

Regarding: "The generic data for 16 pin D is J/B=18.25C/W using a High K model and J/C=38.4C/W using a Low K model. I have requested data specific to the AM26LS32ACD be generated and I will post the results when complete."

The packaging group confirmed the original numbers reported.

Regards,
Ron M.

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Theta J/B and Theta J/C for AM26LS33A