: Moulding of IC 555 with Araldite Resin (AY103) & Hardner (HY951)

Ajay Dudhe

Other Parts Discussed in Thread: TLC555

We have been using IC555 in one of our application where in PCB is moulded with the Araldite, since unit is fully immersed in ATF (Aircraft Turbine Fuel) hence moulding is essential to protect electronics to come in contact directly with ATF. In view of above it is requested to kindly confirm that IC 555 can be moulded with the Araldite. In case, if araldite is not suitable then can you please suggest suitable material for moulding which is ATF resistant also? We shall be gratefully if you could kindly give your comments on the above at the earliest.

Regards,

over 13 years ago

0 Alexander Pakosta over 13 years ago

TI__Prodigy 435 points

Dear Ajay,

I will connect you to the team that supports IC555 within TI. Can you please confirm the TI part number you are using? I believe it is TLC555.

Thanks,

Alex

0 Ron Michallick over 13 years ago in reply to Alexander Pakosta

TI__Guru**** 164436 points

Ajay,

Please provide the full part number. I will forward the request to the packaging engineer.

Regards,
Ron Michallick

0 Ajay Dudhe over 13 years ago in reply to Alexander Pakosta

Prodigy 90 points

Hi Alex,

The correct and exact part no of use is LM555J/883 Ceramic Dip package. Awaiting your reply.

Regards,

Ajay Dudhe

0 Ajay Dudhe over 13 years ago in reply to Ron Michallick

Prodigy 90 points

Hi Ron Michallick,

The correct and exact part no of use is LM555J/883 Ceramic Dip package. Awaiting your reply.

Regards,

Ajay Dudhe

0 Ajay Dudhe over 13 years ago in reply to Alexander Pakosta

Prodigy 90 points

Alex,

I am waiting for your reply.

Ajay Dudhe

0 Ajay Dudhe over 13 years ago in reply to Ron Michallick

Prodigy 90 points

Ron Michallick,

I am waiting for your reply.

Ajay Dudhe

0 Ron Michallick over 13 years ago in reply to Ajay Dudhe

TI__Guru**** 164436 points

Ajay,

I transferred this request to the National team. With the new years holiday, I expect earliest response on January 3.

Regards,
Ron Michallick

0 Ajay Dudhe over 13 years ago in reply to Ron Michallick

Prodigy 90 points

Ron Michallick,

I am waiting for your reply.

Ajay Dudhe

0 Ron Michallick over 13 years ago in reply to Ajay Dudhe

TI__Guru**** 164436 points

_Ajay,

_{I made another contact to NSC timers. Hopefully they will respond.}

_Ron

0 Wade Vonbergen over 13 years ago in reply to Ron Michallick

TI__Guru 62930 points

Ajay, I have checked around within TI and NSC.

Here is our best answer.

Regards,

Wade

Based on the composition information available I do not believe the epoxy will damage the hermetic ceramic package. Apparently it is quite common to use as a potting compound for electronics. When cured it is translucent yellow and very hard. The only caveat is that the customer should run ESS qualification to make sure that the module and components are not overstressed due to TCE mismatch.

TI may provide technical, applications or design advice, quality characterization, and reliability data or service providing these items shall not expand or otherwise affect TI's warranties as set forth in the Texas Instruments Incorporated Standard Terms and Conditions of Sale for Semiconductor Products and no obligation or liability shall arise from TI's provision of such items. Customer is fully responsible for all design decisions and engineering with regard to its products, including decisions relating to application of TI products. By providing technical information, TI does not intend to offer or provide engineering services or advice concerning Customer's design. If Customer desires engineering services, the Customer should rely on its retained employees and consultants and/or procure engineering services from a licensed professional engineer (LPE).

Data converters

Data converters forum

: Moulding of IC 555 with Araldite Resin (AY103) & Hardner (HY951)