Panasonic ALFG series relay

[aracosta1]

Footprint for Panasonic relais series ALFG Datasheet at Panasonic

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[aris-kimi]

Hi @aracosta1 , i noticed that you didn't use round pads and drill holes, i am wondering if this is acceptable since datasheet gives holes' dia.

[aracosta1]

Hi @aris-kimi, I choose to make slotted holes because the ratio of the pin dimension is 2 or bigger, 1.6x0.8 for pin 3 & 4 and 1.6x0.3 for pin 1 & 2. I propose to add a round hole version of the footprint with _CircularHoles suffix.

[cpresser]

It is okay to use slotted holes here. The _CircularHoles variant will be a nice addition.

@aris-kimi I just did assign you to this PR. If you would rather have me review the PR just change the assigned person.

[myfreescalewebpage]

@aris-kimi ping, are you able to review this PR following comment of @cpresser ?

[aris-kimi]

Yes @myfreescalewebpage , i will start this today, but later when i finish work.

[myfreescalewebpage]

No problem

[aris-kimi]

Hi @aracosta1 , sorry for the delay. I do have those comments about this footprint.

• [ ] fab layer line width must be 0.1mm

• [ ] fab layer should have 1mm bevel to indicate pin1 position

~- [ ] pin 3 & 4 drill holes can be reduced to 2mm & 1mm~

~- [ ] pin 1 & 2 drill holes can be reduced to 2mm & 0.5mm~

~- [ ] fab layer dimensions are 0.3mm bigger than ds (, and i am not totaly sure about tolerances described)~

• [ ] courtyard clearance from fab layer must be 0.25mm

• [ ] I think silkscreen can be placed between courtyard and fab layer, meanning silk clearance from fab layer 0.1mm-0.2mm

@myfreescalewebpage , i want some assistance with footprint name. I think it is ok, but i need confirmation.

[myfreescalewebpage]

According to me the footprint name is great

[aracosta1]

Hi @aracosta1 , sorry for the delay. I do have those comments about this footprint.

• [ ] pin 3 & 4 drill holes can be reduced to 2mm & 1mm
• [ ] pin 1 & 2 drill holes can be reduced to 2mm & ~0.5mm~

for these pin I used the calculation from KLC F7.7, y = 0,8 + 0,2 = 1.0mm x >= 1.6 + y = 2.6 mm if you feel it's too big I can chage to smaller measures as suggested.

For the other point I will correct them. I'm going to add also the _CircularHole version. Should I add to the PR or open another one ?

[aris-kimi]

Thank you for your reply. You can add it here yes.

I think it is too big but i missed that KLC rule, so you are correct we should keep it as it is.

[aracosta1]

Hi @aracosta1 , sorry for the delay. I do have those comments about this footprint.

• [ ] fab layer dimensions are 0.3mm bigger than ds (, and i am not totaly sure about tolerances described)

From ds I read tolerances as 0.1mm for items up to 1mm, 0.2mm for measures up to 3mm and 0.3mm for measures over 3mm. So I added 0.3mm to fab layer to have room for worst case tolerances.

[aris-kimi]

You still need to add that 1mm bevel at fab layer something like this image: Image updated (1mm X , 1mm Y, 45 Deg)

[myfreescalewebpage]

@aracosta1 any news here ?

[aracosta1]

@aracosta1 any news here ?

I’ll work on it on the weekend