We have reviewed the specs of the suggested replacement by Digikey.
It is found that the Hot Side Temperature of the suggested part is higher (50C) than our original part (25C).
Could please help to check with them if you have another alternative that is similar?
this request is urgent, can DIGYKEY team
please reply ASAP?
Hello bryan.goh and welcome to the DigiKey TechForum.
I do not see that you provided a part number, could you please provide the part number that this would be referencing?
Regardless of the part number(s) in question, the “hot side temperature” being referenced does not reflect a limitation of the component, but rather a condition at which the adjacent information applies.
here is the P/N MPN ZT4,12,F1,4040,TA,W8 (Laird Technologies), and is also listed by the supplier as TARK Thermal Solutions Peltier Module MPN 7950004‑601 / DigiKey 926‑1184‑ND—has been classified as End of Life (EOL) and replace by 387009501
Hot side temperature is indeed not a limitation for TEC, BUT different hot side temperature will cause our operating conditions to be different.
And, we don’t like to have differences as that will impose difficulties in qualification process, and potential FA failure.“We are looking for a TEC with similar specs, but the hot side temperature is at 25C. Do you have any suggestions?”
A number of the most similar product listings on file can be found here. As with any component substitution process, it is up to the user to understand their application’s requirements and decide as to the acceptability of any suggested alternatives.
In this case, the manufacturer’s suggested replacement is likely the most similar we have available. Comparison of figures measured at the same hot side temperature indicates that the newer device’s performance is slightly better, by a small margin that I would expect to be easily adjusted for by the control mechanism of any properly designed system. If anything, the shorter lead length of the alternative device seems the most likely source of difficulty.
