F5 J74 and K170

bassnkeys · 23rd April 2011, 12:45 AM

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
39°f and drizzle at 7:45PM

westend · 23rd April 2011, 01:58 AM

Quote:

Originally Posted by bassnkeys

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
39°f and drizzle at 7:45PM

What version board do you have?

bassnkeys · 23rd April 2011, 03:53 AM

2.0

Itsmee · 23rd April 2011, 07:36 AM

The boards are designed for IRFP240/9240, the drain and source will be reversed with Toshiba FETS

h_a · 23rd April 2011, 07:50 AM

Hi,

2SK1530 and IRFP240 have the same pinout

IRFP240 mosfet pin labels

(or see datasheets)

I think he's refering to the jfets

Hannes

Itsmee · 23rd April 2011, 08:32 AM

Hi Hannes,

You are correct, my apologies for misinformation, I should have double checked before posting.

Itsmee · 23rd April 2011, 09:36 AM

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

AndrewT · 23rd April 2011, 02:37 PM

Quote:

Originally Posted by bassnkeys

the sgd labeling on the board seems backwards according to the Toshiba data sheet.

Quote:

Originally Posted by Itsmee

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?

bassnkeys · 23rd April 2011, 04:24 PM

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

bassnkeys · 23rd April 2011, 05:04 PM

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
43°f and light rain in Lakeville, MN

23rd April 2011, 12:45 AM	#1
bassnkeys diyAudio Member Join Date: Feb 2011 Location: MN	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 39°f and drizzle at 7:45PM

23rd April 2011, 03:53 AM	#3
bassnkeys diyAudio Member Join Date: Feb 2011 Location: MN	cviller Version 2.0 2.0

23rd April 2011, 07:50 AM	#5
h_a diyAudio Member Join Date: Sep 2006 Location: Graz, Austria	Hi, 2SK1530 and IRFP240 have the same pinout IRFP240 mosfet pin labels (or see datasheets) I think he's refering to the jfets Hannes __________________ fresh matched IRFP240/IRFP9240 fets \|\| AlephJ/JX-kits F5 transistor kits \|\| Burning Amp BA-1/2/3 transistor kits

23rd April 2011, 04:24 PM	#9
bassnkeys diyAudio Member Join Date: Feb 2011 Location: MN	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

23rd April 2011, 05:04 PM	#10
bassnkeys diyAudio Member Join Date: Feb 2011 Location: MN	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 43°f and light rain in Lakeville, MN


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23rd April 2011, 07:36 AM	#4
Itsmee diyAudio Member Join Date: Feb 2009	The boards are designed for IRFP240/9240, the drain and source will be reversed with Toshiba FETS

23rd April 2011, 08:32 AM	#6
Itsmee diyAudio Member Join Date: Feb 2009	Hi Hannes, You are correct, my apologies for misinformation, I should have double checked before posting.

23rd April 2011, 09:36 AM	#7
Itsmee diyAudio Member Join Date: Feb 2009	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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