Badcaps.net Forum
Go Back   Badcaps Forums > Troubleshooting Hardware & Devices and Electronics Theory > Troubleshooting Power Supplies and Power Supply Design
Register FAQ Calendar Search Today's Posts Mark Forums Read

 
Thread Tools Display Modes
Old 01-15-2019, 06:36 AM   #1
zhang
Member
 
Join Date: Jun 2017
City & State: batam
My Country: Indonesia
I'm a: Knowledge Seeker
Posts: 44
Default Dimension Schematic Reading

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.
Attached Images
File Type: png ene dimension 1.png (91.3 KB, 32 views)
File Type: png ene dimension.png (141.8 KB, 20 views)
zhang is offline   Reply With Quote
Old 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
Default 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?
Kdog is offline   Reply With Quote
Old 01-24-2019, 12:34 AM   #3
budm
Badcaps Veteran
 
budm's Avatar
 
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
Default 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..
budm is offline   Reply With Quote
Old 01-24-2019, 07:29 PM   #4
sam_sam_sam
Badcaps Veteran
 
Join Date: Jul 2011
City & State: Sunny Jacksonville FL
My Country: USA
Line Voltage: 120 Volts 60 HZ
I'm a: Knowledge Seeker
Posts: 1,612
Default Re: Dimension Schematic Reading

Quote:
Originally Posted by budm View Post
Thanks for sharing this
__________________
9 PC LCD Monitor
6 LCD Flat Screen TV
30 Desk Top Switching Power Supply
10 Battery Charger Switching Power Supply for Power Tool
6 18v Lithium Battery Power Boards for Tool Battery Packs
1 XBox 360 Switching Power Supply and M Board
25 Servo Drives 220/460 3 Phase
6 De-soldering Station Switching Power Supply 1 Power Supply
1 Dell Mother Board
15 Computer Power Supply
1 HP Printer Supply & Control Board * lighting finished it *


These two repairs where found with a ESR meter...> Temp at 50*F then at 90*F the ESR reading more than 10%

1 Over Head Crane Current Sensing Board ( VFD Failure Five Years Later )
2 Hem Saw Computer Stack Board

All of these had CAPs POOF
All of the mosfet that are taken out by bad caps
sam_sam_sam is offline   Reply With Quote
Old 01-26-2019, 05:29 AM   #5
zhang
Member
 
Join Date: Jun 2017
City & State: batam
My Country: Indonesia
I'm a: Knowledge Seeker
Posts: 44
Default Re: Dimension Schematic Reading

Quote:
Originally Posted by Kdog View Post
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 is offline   Reply With Quote
Old 01-26-2019, 05:37 AM   #6
zhang
Member
 
Join Date: Jun 2017
City & State: batam
My Country: Indonesia
I'm a: Knowledge Seeker
Posts: 44
Smile Re: Dimension Schematic Reading

Quote:
Originally Posted by budm View Post
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
zhang is offline   Reply With Quote
Old 01-26-2019, 09:41 PM   #7
budm
Badcaps Veteran
 
budm's Avatar
 
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
Default 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.
budm is offline   Reply With Quote
Reply

Thread Tools
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump



Badcaps.net Technical Forums 2003 - 2019
Powered by vBulletin ®
Copyright ©2000 - 2019, Jelsoft Enterprises Ltd.
All times are GMT -6. The time now is 11:59 AM.
Did you find this forum helpful?