Dimension Schematic Reading

zhang · 01-15-2019, 06:36 AM

Is there anybody who can show me the way of knowing the dimension of the photo attached?
I tried to figure it out, but in vain.

Kdog · 01-23-2019, 10:50 PM

Late - as usual - If 124 is wire to wire, and container is 128, then each wire = 2, right – am I missing something?

**budm** · 01-24-2019, 12:34 AM

Lead spacing (BSC = Basic Spacing between Centers) e = 0.40 mm.
Leg width b = 0.16 mm.
So dimension from end pin center to end pin center is 0.40 x 31 = 12.40 mm.
Body dim. D1 = 14.00 mm.
Body thickness A2 is 1.4 mm

https://reservice.pro/upload/Datasheets/kb9012qf.pdf

https://d3uzseaevmutz1.cloudfront.ne...kageGuide5.pdf
see page 27 for 128 pin 14 x 14 mm.

BSC: https://www.maximintegrated.com/en/g...m/BSC/gpk/1119

**sam_sam_sam** · 01-24-2019, 07:29 PM

Quote:

Originally Posted by budm

BSC: https://www.maximintegrated.com/en/g...m/BSC/gpk/1119

Thanks for sharing this

zhang · 01-26-2019, 05:29 AM

Quote:

Originally Posted by Kdog

Late - as usual - If 124 is wire to wire, and container is 128, then each wire = 2, right – am I missing something?

I don't actually understand each wire = 2

zhang · 01-26-2019, 05:37 AM

Quote:

Originally Posted by budm

Lead spacing (BSC = Basic Spacing between Centers) e = 0.40 mm.
Leg width b = 0.16 mm.
So dimension from end pin center to end pin center is 0.40 x 31 = 12.40 mm.
Body dim. D1 = 14.00 mm.
Body thickness A2 is 1.4 mm

https://reservice.pro/upload/Datasheets/kb9012qf.pdf

https://d3uzseaevmutz1.cloudfront.ne...kageGuide5.pdf
see page 27 for 128 pin 14 x 14 mm.

BSC: https://www.maximintegrated.com/en/g...m/BSC/gpk/1119

Thank you very much
It help me alot

**budm** · 01-26-2019, 09:41 PM

I am glad it helps. Always learning something everyday.
I use to do PCB component library and validation so I have make sure I get the correct dimensions otherwise we will be making lots of bad PCB and I will be in big trouble.

01-23-2019, 10:50 PM	#2
Kdog Materials Tech Join Date: Nov 2014 City & State: Redmond, WA My Country: USA I'm a: Hardcore Geek Posts: 2	Re: Dimension Schematic Reading Late - as usual - If 124 is wire to wire, and container is 128, then each wire = 2, right – am I missing something?

01-24-2019, 12:34 AM	#3
budm Badcaps Veteran Join Date: Feb 2010 City & State: S.F. Bay area My Country: USA Line Voltage: 120V 60Hz I'm a: Knowledge Seeker Posts: 36,360	Re: Dimension Schematic Reading Lead spacing (BSC = Basic Spacing between Centers) e = 0.40 mm. Leg width b = 0.16 mm. So dimension from end pin center to end pin center is 0.40 x 31 = 12.40 mm. Body dim. D1 = 14.00 mm. Body thickness A2 is 1.4 mm https://reservice.pro/upload/Datasheets/kb9012qf.pdf https://d3uzseaevmutz1.cloudfront.ne...kageGuide5.pdf see page 27 for 128 pin 14 x 14 mm. BSC: https://www.maximintegrated.com/en/g...m/BSC/gpk/1119 __________________ Never stop learning Basic LCD TV and Monitor troubleshooting guides. http://www.badcaps.net/forum/showthr...956#post305956 Voltage Regulator (LDO) testing: http://www.badcaps.net/forum/showthr...999#post300999 Inverter testing using old CFL: http://www.badcaps.net/forum/showthr...er+testing+cfl Tear down pictures : Hit the ">" Show Albums and stories" on the left side http://s807.photobucket.com/user/budm/library/ TV Factory reset codes listing: http://www.badcaps.net/forum/showthread.php?t=24809 Last edited by budm; 01-24-2019 at 12:49 AM..

01-26-2019, 09:41 PM	#7
budm Badcaps Veteran Join Date: Feb 2010 City & State: S.F. Bay area My Country: USA Line Voltage: 120V 60Hz I'm a: Knowledge Seeker Posts: 36,360	Re: Dimension Schematic Reading I am glad it helps. Always learning something everyday. I use to do PCB component library and validation so I have make sure I get the correct dimensions otherwise we will be making lots of bad PCB and I will be in big trouble.

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