I have a problem with parameters of TPS78001DDCR.
Ignd should be about 1 uA, but I have in some examples 70 uA (with vertical line).
This problem is only in exaples with vertical line on casing.
Is it a fake ?
What does it means CEA on case ?
In two examples on foto there are different horizontal lines over or under letters (CEA). What does it means ?
In reply to Ryan Eslinger:
We used an external system to measure TPS78001DDCR, as in the documentation on page 17, where R1 = 510k, R2 = 820K, Vin = 3.6V, Vout = 1.9V. In this measurement system, the defective stabilizer had Iout = 70uA, good about 2uA.
How can you identify defective elements after the markings or labels?
We buy about 20,000 stabilizers per year, so this is a problem for us.
Below mark on good and bad packaging TPS78001DDCR:
Fake marked like this:
and mark good one:
In reply to Tomasz Sztuka:
I apologize for the delay in my response due to the US Holidays. To pursue this issue further we will need to exchange information that can be considered proprietary; therefore, I am going to send you a friend request/private message.
The following link will help you learn how to send private messages:
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