I purchases a tube of EA2-3NJ relays from Mouser. Reputable company, not counterfeit parts, yada yada. I try using them with 3.3V coming off a Raspberry Pi and they won't switch. I tried several other 3.3V sources, can't get them to switch. I tried 10 different ones from the sleeve, no luck. Contacted Mouser, after a little back and forth, they sent me a replacement set. Same issue.
Here is the datasheet. The coil wants to be connected one way (+/-) and I am sure I am connecting it that way. I am not using a pulsed or waveformed voltage. The 3V model that I am using has a Must Operate Voltage of 2.25V. I tried voltages down to 2V and as high as 5V. Never switched. The contacts will handle 1A at 30V, I was using 5V connected to a couple of LEDs to test the circuit. I tried it both with and without a flyback diode.
So, I don't know what else to try. It's a relay, it's not rocket science. The only thing I can find in the datasheet that might suggest a problem is related to storage time -- no more than 3 months at 70% relative humidity or 6 months at 50% relative humidity. So, could I have received two bad batches from Mouser or am I doing something wrong?