Bought and fitted one of these. Threw it away when it failed a month later!

Then you lost your $34. Should have returned it. A certain small percentage of electronic devices are subject to "infant mortality". Sorry you were the unlucky one that time. All high reliability electronics (jet engine fuel controls for example) are subjected to a lengthy burn-in period in a temperature chamber to weed out bad parts. But this is expensive and is not done for inexpensive consumer electronics.