PCB Hole Size

ptah · 26th November 2006, 07:05 PM

Folks,

Does anyone know of a hole size guide or reference for different circuit board components?

Nisbeth · 26th November 2006, 09:45 PM

I don't think there's a single reference for that, you have to look at individual component datasheets to find package information.

/U.

Geek · 27th November 2006, 01:24 PM

If there's one size drill bit you should have in your collection for PCB's, it's 1/32"

peranders · 27th November 2006, 03:36 PM

Quote:

Originally posted by ptah
Folks,

Does anyone know of a hole size guide or reference for different circuit board components?

You check the datasheets for the part in mind, then add 0.2-0.3 mm if the board has plated holes.

Example: A resistor has normally 0.6 mm leads and 0.8-0.9 mm hole is suitable.

suvatn · 27th November 2006, 08:03 PM

Drill bit size for PCB manufacturing is starting from 0.1mm to 6.3mm, increment step by 0.1mm.
Normal single side PCB will be starting from 0.8mm.
Hole size usually will be component pin size + 0.2mm.

BrianL · 28th November 2006, 04:01 AM

millimeters? All the PCBs I've ever done have hole sizes in fractions of inches! ;-)

Hole sizes are a combination of size needed to fit component leads and drill bits offered by the fabricator. For example, a number of the "prototype" PCB vendors (the kind you email your Gerbers to along with credit card number) have a limited selection of drill sizes in order to keep things standardized and keep their costs down (and hence keep down the cost to you). Thus, you may need to adjust the hole sizes on your PCB to fit their available sizes.

Other places, such as my current employer, seem happy to let you use any and every conceivable drill bit (in increments of 0.0005") all on the same PCB.

If you're doing your own PCB, make a set of reasonable choices. Avoid using a hole that is "just big enough" as it makes it hard to remove a component. You'll find that you need only a few sizes for the normal range of components.

Nordic · 28th November 2006, 05:27 AM

When I was little the neighbours had a daughter, with 12 toes and 12 fingers... bet she'd learn to count and measure just fine in the USA... the rest of us use metric... I Know they tried it for 2 weeks in the US, but gave it up because it was too hard :P.

For 89.7% of the stuff you'll do, you need th 0.8mm bit.

peranders · 28th November 2006, 07:10 AM

Quote:

Originally posted by BrianL
millimeters? All the PCBs I've ever done have hole sizes in fractions of inches! ;-)

Hole sizes are a combination of size needed to fit component leads and drill bits offered by the fabricator.

Never heard of millimeters?

1 inch = 25.4 mm. My pcb fabricator can offer just about any hole size so I just have to pick the size I want. More than 10 different sizes is not a problem. If you make a doublesided board 0.9 mm is very suitable for 0.6-0.8 mm leads.

djQUAN · 28th November 2006, 07:35 AM

Quote:

Originally posted by peranders

Never heard of millimeters? 1 inch = 25.4 mm. My pcb fabricator can offer just about any hole size so I just have to pick the size I want. More than 10 different sizes is not a problem. If you make a doublesided board 0.9 mm is very suitable for 0.6-0.8 mm leads.

who's your fabricator BTW?

suvatn · 29th November 2006, 07:39 AM

Milimeter

http://www.crownhill.co.uk/level3.ph...aca0f3230738fc

In the past, yes in US, they use measuring in Inch unit but in Europe use in metric.
In Asia some mixed up from difference source, but now most of electronics semiconductor become small and smaller, measuring unit changing to Metric

I do not know exactly in US.

U.S. UNION TOOL, INC.
You can find out

In Germany, Kammer news reports that they finish to develop
0.03mm drill bit, you can see how small.

http://www.mpk-kemmer.de/KemmerTechn...02-05_engl.pdf

In Japan and Chaina, seem all of them supply drill bit in Metric unit.

26th November 2006, 07:05 PM	#1
ptah diyAudio Member Join Date: Aug 2006	PCB Hole Size Folks, Does anyone know of a hole size guide or reference for different circuit board components?

28th November 2006, 04:01 AM	#6
BrianL diyAudio Member Join Date: Mar 2002 Location: USA	millimeters? All the PCBs I've ever done have hole sizes in fractions of inches! ;-) Hole sizes are a combination of size needed to fit component leads and drill bits offered by the fabricator. For example, a number of the "prototype" PCB vendors (the kind you email your Gerbers to along with credit card number) have a limited selection of drill sizes in order to keep things standardized and keep their costs down (and hence keep down the cost to you). Thus, you may need to adjust the hole sizes on your PCB to fit their available sizes. Other places, such as my current employer, seem happy to let you use any and every conceivable drill bit (in increments of 0.0005") all on the same PCB. If you're doing your own PCB, make a set of reasonable choices. Avoid using a hole that is "just big enough" as it makes it hard to remove a component. You'll find that you need only a few sizes for the normal range of components. __________________ bel

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26th November 2006, 09:45 PM	#2
Nisbeth diyAudio Member Join Date: Jan 2001 Location: Denmark	I don't think there's a single reference for that, you have to look at individual component datasheets to find package information. /U.

27th November 2006, 01:24 PM	#3
Geek diyAudio Member Join Date: Sep 2004	If there's one size drill bit you should have in your collection for PCB's, it's 1/32"

27th November 2006, 08:03 PM	#5
suvatn diyAudio Member Join Date: Jan 2006 Location: Bangkok	Drill bit size for PCB manufacturing is starting from 0.1mm to 6.3mm, increment step by 0.1mm. Normal single side PCB will be starting from 0.8mm. Hole size usually will be component pin size + 0.2mm.

28th November 2006, 05:27 AM	#7
Nordic diyAudio Member Join Date: Sep 2005	When I was little the neighbours had a daughter, with 12 toes and 12 fingers... bet she'd learn to count and measure just fine in the USA... the rest of us use metric... I Know they tried it for 2 weeks in the US, but gave it up because it was too hard :P. For 89.7% of the stuff you'll do, you need th 0.8mm bit.

29th November 2006, 07:39 AM	#10
suvatn diyAudio Member Join Date: Jan 2006 Location: Bangkok	Milimeter http://www.crownhill.co.uk/level3.ph...aca0f3230738fc In the past, yes in US, they use measuring in Inch unit but in Europe use in metric. In Asia some mixed up from difference source, but now most of electronics semiconductor become small and smaller, measuring unit changing to Metric I do not know exactly in US. U.S. UNION TOOL, INC. You can find out In Germany, Kammer news reports that they finish to develop 0.03mm drill bit, you can see how small. http://www.mpk-kemmer.de/KemmerTechn...02-05_engl.pdf In Japan and Chaina, seem all of them supply drill bit in Metric unit.

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