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Old 23rd April 2011, 12:45 AM   #1
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Default F5 J74 and K170

I am populating a cviller board... the sgd labeling on the board seems backwards according to the Toshiba data sheet. Do I need to turn them around or am I missing something? The g label makes sense, it's the s and d that seem backwards.
Thanks,
DB in MN
39f and drizzle at 7:45PM
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Old 23rd April 2011, 01:58 AM   #2
westend is offline westend  United States
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Quote:
Originally Posted by bassnkeys View Post
I am populating a cviller board... the sgd labeling on the board seems backwards according to the Toshiba data sheet. Do I need to turn them around or am I missing something? The g label makes sense, it's the s and d that seem backwards.
Thanks,
DB in MN
39f and drizzle at 7:45PM
What version board do you have?
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Old 23rd April 2011, 03:53 AM   #3
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Default cviller Version 2.0

2.0
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Old 23rd April 2011, 07:36 AM   #4
Itsmee is offline Itsmee  England
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The boards are designed for IRFP240/9240, the drain and source will be reversed with Toshiba FETS
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Old 23rd April 2011, 07:50 AM   #5
h_a is offline h_a  Europe
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Hi,

2SK1530 and IRFP240 have the same pinout

IRFP240 mosfet pin labels

(or see datasheets)

I think he's refering to the jfets

Hannes
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Old 23rd April 2011, 08:32 AM   #6
Itsmee is offline Itsmee  England
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Hi Hannes,

You are correct, my apologies for misinformation, I should have double checked before posting.
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Old 23rd April 2011, 09:36 AM   #7
Itsmee is offline Itsmee  England
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If you hold the JFET with the legs down and the flat side facing you, the drain is on the left, this appears to match the PCB
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Old 23rd April 2011, 02:37 PM   #8
AndrewT is offline AndrewT  Scotland
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Quote:
Originally Posted by bassnkeys View Post
the sgd labeling on the board seems backwards according to the Toshiba data sheet.
Quote:
Originally Posted by Itsmee View Post
If you hold the JFET with the legs down and the flat side facing you, the drain is on the left, this appears to match the PCB
This clearly shown on the Tosh datasheet.
Why are you confused?
What are you misunderstanding?
__________________
regards Andrew T.
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Old 23rd April 2011, 04:24 PM   #9
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Default Toshiba 2sk170

The Toshiba 2sk170 sheet I found shows the drain on the right when facing the flat...
the Toshiba 2sj74 sheet implies the same.
Thanks,
DB
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Old 23rd April 2011, 05:04 PM   #10
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Default Actually...

I was confusing myself...
I was reading the Tosh data sheet as if it was showing a view from the top...
not from underneath (the pin side).
I hope you'll all at least get a laugh out of it.
Thanks,
DB
43f and light rain in Lakeville, MN
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