I am creating a electronics project powered by a 3.7 V LiPo Battery. I want to make it chargeable via Micro USB or Lightning cables.
Is it possible to buy female Lightning connectors and is it allowed by Apple to use them?
Use female Apple lightning connector for charging LiPo
connector
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You mean like this?
These are really just normal USB connectors, but with a strong, waterproof connector over the top of them. This holds them in place despite vibration, protects them from mechanical abuse, and keeps the water out.
I think the key word you need is 'industrial'. Farnell stock a bunch of them.
Also, take a look at the Bulgin datasheet. From this, you can get the part numbers for the panel mount, and cable mount versions of the connector.
Note "bus extension" in this situation will only work if the device it's going to is purely passive (doesn't use the data lines) or you have a hub on the board.
0) Yes, it always takes absolutely ages to find the right parts and import them into your PCB tool. And there are always way too many of the wrong sort of parts.
1) "Shielded" connectors are the normal sort with a rectangular metal casing. Pick one of those. Not having a shield might give you interference problems (probably won't, but it's such a pain to diagnose). It also makes the mechanical connection more solid.
Gold plating is an affordable luxury that stops the contacts corroding. Less of an issue for contacts that are hidden away from fingers, but still nice to have if you care about longevity.
2) Through-hole is generally stronger than surface-mount. Some have extra plastic or metal mounting lugs to really lock it to the PCB.
3) The PCB-only connector requires that you get a PCB made of the required thickness. It sits a little more loosely in sockets, but it works and is very cheap. It also looks cheap. Connectorless USB on a PCB
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Best Answer
You might find some fancy sellers around the net, but forget to buy something original. To make an Apple product, i.e. that uses Apple parts, you have to be their partner and your device must meet some strict specifications (I swear I've read it somewhere - can't find it anymore).
But hey, no sweat: there's tons of better connectors out there, micro USB is the standard around the world now, and I bet you can rethink your project in order to use something standard instead of something fancy.