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Old 4th February 2011, 08:45 AM   #1
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Default Holco MFR 15ppm 2W for sale

I have quite a few 10 47 100 150 R Holco MFR 15 ppm 1% 2W for sale
Looking for £0.2 Cheaper for QTY.

Also FQP19N20C (TO220) £5.00

Soon Futaba 0.47 R and FQA12P20

Got parts in quantity as only way for me to get the suply.

Let me know

Al
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File Type: jpg Mosfet testing 019.jpg (597.3 KB, 619 views)
File Type: jpg Mosfet testing 020.jpg (623.9 KB, 595 views)
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Old 15th February 2011, 01:03 AM   #2
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New in

Futaba 0.47 and FQA12P20
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Old 16th May 2011, 12:40 PM   #3
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F5 parts for sale

Got same postage prices for USA 20 Futabas =£2.56 or £7.56 with tracking
Futabas will be precision measured at 100 mA (LM317 circuit from data sheet)

Holco £10 bag of 100 (mixed values maybe) or £0.14 each
FQA12P20 VGS tested at one point and at constant temperature of 50C (+ - 1 C)
£7
FQP19N20 (TO220) £5.00
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File Type: jpg F5 parts sale 001.jpg (611.4 KB, 433 views)
File Type: jpg F5 parts sale 002.jpg (599.3 KB, 384 views)
File Type: jpg F5 parts sale 003.jpg (614.2 KB, 356 views)
File Type: jpg F5 parts sale 004.jpg (593.5 KB, 105 views)
File Type: jpg F5 parts sale 005.jpg (638.0 KB, 115 views)
File Type: jpg F5 parts sale 006.jpg (622.8 KB, 111 views)
File Type: jpg F5 parts sale 007.jpg (643.2 KB, 104 views)
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Old 19th May 2011, 01:05 PM   #4
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MPC 74 precision measured at 100 mA
£1 each

Quite a few matched values whit in 0.001 Homs or beter

IMO not sure why one may need this precision as a smaller value resistor would compensate for a lazier mosfet

But there you have it.

10 % donation to DIY audio aplies

P&P to USA £7.8 with parcell traking
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File Type: jpg F5 parts sale 008.jpg (602.0 KB, 108 views)
File Type: jpg F5 parts sale 009.jpg (621.9 KB, 102 views)
File Type: jpg F5 parts sale 010.jpg (635.6 KB, 106 views)
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Old 11th July 2011, 01:40 AM   #5
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Default FQA12P20 / FQA19N20C

Bksabath, FQA12P20 and FQA19N20C still available?
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Old 19th July 2011, 04:15 AM   #6
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Hi Just back from Hols in egypt

Yes they are but note FQP19N20 is what I have and is TO 220 as in pictures.

When finished unpacking I will do single point matching
24 V 2A at constant 50C temperature
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Old 19th July 2011, 01:59 PM   #7
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Checking for additional interest with some local folks. Be back to you soon.
Egypt!! What water erosion around the Sphinx?
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Old 23rd July 2011, 12:35 PM   #8
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Futaba MPC 74 0.47R

For sale at £1


I have started to measure up a batch of Futabas.
I am using 10V and LM317 as 100.00 mA constant current source.

IMO handy to know which resistor to use as source resistor, a lower value may help a lazier Mosfet.

But then if you want them matched just pick what you want

At first I was using Dip sockets but contact was not reliable and adding about 0.006 Homs to the test.

I got much beter and repeatable measurement with a different socket so I will try to improve on that and start again

In the mean time I have reliable results up to 0.000 Homs repeatable to 0.0000
And the meter is capable to go down to 0.00000
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File Type: jpg PREC FutabasMPC74 006.jpg (617.6 KB, 44 views)
File Type: jpg PREC FutabasMPC74 008.jpg (607.8 KB, 38 views)
File Type: jpg PREC FutabasMPC74 004.jpg (618.0 KB, 30 views)
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Old 24th July 2011, 10:55 AM   #9
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I have a first batch of Futabas ready

Pick your values from table

First came first served

Reserved 10 to be picked

£1 each + P&P

Unfortunately yours truly wrote down the values with permanent marker and first round of measurement was out by about 0.008 Homs (Poor contact on Dill socket adding to test results)
I could not get rid of the marker so values are crossed over.
I am really sorry about that.
I remember now somebody mentioning the use of sticky labels (Papa matching mosfets article)

Futaba MPC 74 Nominal value 0.47 Available values
0.4689 0.4767 0.4803
0.4701 0.4769 0.4805
0.4717 0.4717 0.4770 0.4806
0.4718 0.4771 0.4771 0.4812
0.4722 0.4772 0.4813
0.4727 0.4773 0.4814
0.4733 0.4774 0.4817
0.4733 0.4776 0.4826 0.4826
0.4735 0.4777 0.4829
0.4736 0.4780 0.4842
0.4740 0.4783 0.4843
0.4742 0.4742 0.7484 0.4845
0.4743 0.4743 0.4786 0.4846 0.4846
0.4747 0.4747 0.4787 0.4884
0.4750 0.4750 0.4750 0.4785 0.4853 0.4853
0.4752 0.4789 0.4865
0.4753 0.4791 0.4897
0.4754 0.4792
0.4756 0.4756 0.4756 0.4793
0.4758 0.4794
0.4763 0.4763 0.4763 0.4797 0.4797
0.4765 0.4798
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File Type: jpg PREC FutabasMPC74 010.jpg (616.3 KB, 19 views)
File Type: jpg PREC FutabasMPC74 011.jpg (622.8 KB, 16 views)
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File Type: doc Futaba MPC 74.doc (47.0 KB, 8 views)
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Old 25th July 2011, 04:15 PM   #10
qusp is offline qusp  Australia
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hi, i'll take 100 of the holco. can i have 40 x 10R and 30 each 47r and 100r to complete the 100 pieces?also are the NTE for sale?
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