I am trying to use a relay for the first time.
I bought 2 of these and I want to use them in my circuit (5V control voltage).

However, the relay has 6 pins? The datasheet says it is a Form A, so it should have 4 pins?

The wiring diagram shows that pin 2 and 5 are connected, but should I connect these in my diagram, or are they internally connected?

I find it very confusing that a form A relay has 6 pins, can anybody explain why this is so? (in general)

 

It looks like pin 2 & 5, and 3 & 6 is connected internally. If you look at page 2 of the PDF on the page you posted, there is a better drawing.

 

Cool Relay. They do that so you have the option to use the pins on the bottom (soldered to board) or the pins on the top (connected via female spade terminalsw/ wire leads)

 

Cool Relay. They do that so you have the option to use the pins on the bottom (soldered to board) or the pins on the top (connected via female spade terminalsw/ wire leads)

Don't quit get that.
The top and bottom is symmetric, right?

 

Don't quit get that.
The top and bottom is symmetric, right?

You have 2 options. You can connect to the top of the relay like this:

Or you can connect to the bottom of the relay like this:

 

I don't think it actually does have blade connectors on top. It just looks like that in the drawings, but I think it tries to visualize that the pins are tied together internally

 

The wiring diagram shows that pin 2 and 5 are connected, but should I connect these in my diagram, or are they internally connected?

Thought of doing a bit of reverse engineering with an Ohm meter?
Max.

 

As this is a relatively high current relay for a pcb so 2&5 and 3&6 are connected internally to allow for lower resistance and better soldered connection down to the pcb tracks.

 

I don't think it actually does have blade connectors on top. It just looks like that in the drawings, but I think it tries to visualize that the pins are tied together internally

Sure looked like it to me. Check out the other documents. It gives dimensions for the spades and everything.

 

Sure looked like it to me. Check out the other documents. It gives dimensions for the spades and everything.

Yes you are right. Sorry, didn't see that drawing.