Help with "SIM800C package - semi-circular arc problem"

biu12138biu

Help with "SIM800C package - semi-circular arc problem" [Copy link]

 

May I ask, on which layer should the semicircular part in the figure be drawn? Since "KEEP OUT OF AREA" is written at the position of the semicircular part, is it necessary to draw a semicircular PCB?

okhxyyo

No. Just draw the package and roughly outline the shape on the silk screen.

biu12138biu

okhxyyo posted on 2020-5-24 07:29 No, you just need to draw the package and roughly draw the outline on the silk screen layer

Thanks for the reply. So, the semicircle is just there for decoration, right?

well_kim

The semicircle is the copper foil on the module, not what you want to draw.

qwqwqw2088

This place corresponds to the GSM antenna interface of the module, GSM_ANT

The area marked "Keep out of Area" prompts you to draw an area on the prohibited wiring layer where wiring cannot be done.

When wiring manually, read the hardware manual carefully in advance and pay attention to this

qwqwqw2088

qwqwqw2088

An AD package is provided for reference only. Please carefully compare it with the size of your own sim800c when using it.

qwqwqw2088

sim800C.PcbLib (106.5 KB, downloads: 4)

2020-5-24 09:22 上传

点击文件名下载附件

okhxyyo

biu12138biu posted on 2020-5-24 08:12 Thanks for your reply. So, the semicircle is just a decoration there, right?

No, that is for pin welding. It is the shape of the actual object. But when you put the board on the market, you need to draw the package. It is not enough to simply draw the shape of the card. You also need to draw the size of the welding pad corresponding to the pin.

biu12138biu

well_kim posted on 2020-5-24 08:37 The semicircle is the copper foil on the module, not what you want to draw.

Thanks for the reply.

biu12138biu

qwqwqw2088 posted on 2020-5-24 09:21 Provide an AD package for reference only. When using it, you must carefully compare the size of your own sim800c.

Got it. I've been busy with my paper these past two days and don't have time to reply to your message. Thanks for your help haha.

biu12138biu

okhxyyo posted on 2020-5-24 15:35 No, that is for pin welding, it is the shape of the real object, but when you put the board on the market, you need to draw the package, not just draw the shape of the card, you need to...

Thanks for your reply. Then I also need to solder the semicircle arc when soldering the chip.