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OPA388: About the conditions of high temperature and high humidity test(THB).

Kengo.Y
Guru 11255 points
Part Number: OPA388

Hi team,

My customer wants to try the high temperature and high humidity test(THB).
Could you tell me the test condition?
I think that it should be carried out under the test conditions of the data sheet with JEDEC.

Sincerely.
Kengo.

  • 0
    TI__Guru 67761 points

    Kengo,

    TI performs (or qualify by similarity) Moisture Sensitivity Level tests (MSL) and Highly Accelerated Stress Test (HAST) on all of our products including OPA388.

    Moisture sensitivity level relates to the packaging and handling precautions for some semiconductors. The MSL is an electronic standard for the time period in which a moisture sensitive device can be exposed to ambient room conditions (30 °C/85%RH at Level 1; 30 °C/60%RH at all other levels).

    Moisture/reflow sensitivity classification for plastic[1] Integrated circuit (IC) SMDs, there are eight levels of moisture sensitivity. Components must be mounted and reflowed within the allowable period of time (floor life out of the bag).

    • MSL 6 – Mandatory Bake before use
    • MSL 5A – 24 hours
    • MSL 5 – 48 hours
    • MSL 4 – 72 hours
    • MSL 3 – 168 hours
    • MSL 2A – 4 weeks
    • MSL 2 – 1 year
    • MSL 1 – Unlimited

    All packages of OPA388 are classified as MSL 2

    Below are the conditions for testing to Level 2 MSL.

    CSAM

    1. 24 hour bake at 125C
    2. 85C/60%RH for 168 hours
    3. 3 passes of reflow at a peak temp of 260C
    4. Flux submersion/DI water clean
    5. Electrical test
    6. Post CSAM

    Level 2 indicates parts must be mounted and reflowed within 1 year. The main focus is delamination evaluation.

    OPA388 packages are also qualified under 130°C/85% RH HAST test 

  • 0 in reply to Marek Lis
    Guru 11255 points

    Marek,

    Thank you so much for your reply.

    I understood the test condition.
    I think it is energized, but how do you handle the input voltage and terminals?

    Sincerely.
    Kengo.

  • 0 in reply to Kengo.Y
    TI__Guru 67761 points

    TI performance MSL tests according to industry standard, JEDEC J-STD-033, while HAST test is done in accordance with JESD22-A110E.01.

    Please review below links and attached documents.

    https://www.navsea.navy.mil/Portals/103/Documents/NSWC_Crane/SD-18/Test%20Methods/jstd033.pdf

    https://www.ti.com/support-quality/reliability/reliability-testing.html?keyMatch=JESD22-A110E

    MSL Ratings and Reflow Profiles.pdf

    TheConceptOfRelativeHumidityInHAST.pdf

  • 0 in reply to Marek Lis
    Guru 11255 points

    How much input voltage is the V+/V-?
    What type of input signal for IN+/IN=?

    I'd like to know the test conditions of HAST.

    Sincerely.
    Kengo.

  • 0 in reply to Kengo.Y
    TI__Guru 67761 points

    Kengo,

    HAST conditions are given in the above document in the red circle: temperature 130C, relative humidity 85%, test duration 96 hours.

    Before and after HAST, all parts are electrically tested to meet datasheet parameters under specified conditions (e.g. Vcc of 5.5V) - see below.

  • 0 in reply to Marek Lis
    Guru 11255 points

    Marek,

    I think HAST is a test that applies bias.
    Please tell me about the voltage application and pin termination during the test.

    Sincerely.
    Kengo.

  • +1 in reply to Kengo.Y
    TI__Guru 67761 points

    Kengo,

    If your question pertains to configuration used during HAST, the part is under quiescent conditions with input and output at mid-supply as specified at the top of the data-sheet table: Vcm=Vout=Vs/2, RL=10k connected to Vs/2. 
    The easiest way to set this up is to use the op amp in a buffer configuration (G=1) with +/-2.75V power supply, positive input grounded and 10k output load connected to ground.