I placed a small Mouser order March 2, and they just emailed this morning to say it's expected to ship on March 8. They're blaming high order volume and covid. I normally receive my Mouser orders then next day when using Fedex ground, or UPS shipping.
I used to use their "economy shipping" option when I wasn't in a hurry since it only added a day or two, but after several problems, never again. It uses Fedex for the main leg, and USPS for the last mile.
Last fall, an order showed as shipped, but the tracking number said it hadn't even been received by Fedex. After about a month, I finally convinced them to re-ship it and received it the next day. The original order did eventually arrive a few weeks later.
Earlier this year, I decided to give economy shipping one more chance. This time everything was fine until it was "out for delivery", then the USPS declared it "undeliverable" and returned it to the sender. Mouser said they would re-ship it after it was returned, but after waiting over a week, I convinced them to send a new order.