TRANSISTOR SIV300004 needed....

Started by jusme in sci.electronics.design15 years ago 2 replies

or equivalent. I only need one but would like to have some spares. I have looked all over. I would even take a datasheet. Oh, please email...

or equivalent. I only need one but would like to have some spares. I have looked all over. I would even take a datasheet. Oh, please email if you have one/any as I don't check here often. Thanks for any help. j/b


First rubber flexible graphene transistor now available

Started by Jan Panteltje in sci.electronics.design8 months ago

https://en.wikipedia.org/wiki/April_Fools'_Day

https://en.wikipedia.org/wiki/April_Fools'_Day


Heatsing for TO263

Started by Piotr Wyderski in sci.electronics.design3 years ago 7 replies

Hi, does this make much sense? http://smartheatsinks.com/SHS_SMT.pdf The heat path between the transistor and the heatsink is...

Hi, does this make much sense? http://smartheatsinks.com/SHS_SMT.pdf The heat path between the transistor and the heatsink is awkward. Best regards, Piotr


Commercially available jumctionless transistor

Started by amal banerjee in sci.electronics.design6 months ago 5 replies

All you electronics|semiconductor gurus here. Any commercially available junctionless transistors ? Kist curious .

All you electronics|semiconductor gurus here. Any commercially available junctionless transistors ? Kist curious .


Decapping a SOT23

Started by Anonymous in sci.electronics.design2 years ago 31 replies

Hi For fun I need to inspect the die in a typical BC847 SOT23 plastic housing How do one decap that transistor? Cheers Klaus

Hi For fun I need to inspect the die in a typical BC847 SOT23 plastic housing How do one decap that transistor? Cheers Klaus


Device Encapsulations

Started by Cursitor Doom in sci.electronics.design2 weeks ago 6 replies

Gentlemen, I've come across an RF transistor which seems to be available in 3 very different ecapsulations. I'll use these links from Ebay...

Gentlemen, I've come across an RF transistor which seems to be available in 3 very different ecapsulations. I'll use these links from Ebay for simplicity and hope they're still up by the time anyone reads this. :-) The first case appears to be based on the TO-220 dimensionos but appears to be all plastic: https://tinyurl.com/yfnfchtk The second is what I would typically expect to ...


DAC1209 error; charge injection?

Started by Tim Williams in sci.electronics.design3 years ago 4 replies

Anyone seen this before? Seems like I'm getting a huge spike (relatively speaking -- about 3 LSB) when flipping bit 11 (going from > = 0x800 to

Anyone seen this before? Seems like I'm getting a huge spike (relatively speaking -- about 3 LSB) when flipping bit 11 (going from > = 0x800 to


A SOT-89 with emitter in the middle

Started by LM in sci.electronics.design5 years ago 36 replies

Has anyone seen a NPN bipolar transistor with emitter in the middle, tab. Emitter is easier to ground in RF amplifiers.

Has anyone seen a NPN bipolar transistor with emitter in the middle, tab. Emitter is easier to ground in RF amplifiers.


really tiny transistor

Started by John Larkin in sci.electronics.design3 years ago 35 replies

https://www.digikey.com/products/en?keywords=BFP840FESD -- John Larkin Highland Technology, Inc picosecond timing precision...

https://www.digikey.com/products/en?keywords=BFP840FESD -- John Larkin Highland Technology, Inc picosecond timing precision measurement jlarkin att highlandtechnology dott com http://www.highlandtechnology.com


Commercially available hetero bijunction transistor

Started by amal banerjee in sci.electronics.design9 months ago 2 replies

Could some electronics guri here help please ? Where could I find datasheets, specifications and SPICE models if any, of commercially available...

Could some electronics guri here help please ? Where could I find datasheets, specifications and SPICE models if any, of commercially available hetero bijunction transistors. Thanks in advance.


BD131 Spice Model Wanted

Started by Julian Barnes in sci.electronics.design7 years ago 15 replies

Hi all, It still amazes me after all the years LTspice has been around the standard parts library in it remains so tiny. I don't think this...

Hi all, It still amazes me after all the years LTspice has been around the standard parts library in it remains so tiny. I don't think this long- standing defect in otherwise very good program will ever be fixed. So like anyway, has anyone got a model for a BD131 NPN transistor they could post here? TIA folks. CD


Radar generating transistor circuit?

Started by Anonymous in sci.electronics.design9 years ago 41 replies

I remember reading some while ago that LLL was working with fast switching = transistors which generated "radar wavelength" signals. Then, as...

I remember reading some while ago that LLL was working with fast switching = transistors which generated "radar wavelength" signals. Then, as events go,= a Georgia Tech Prof. raised a stink since he had previously developed thos= e applications. Again, a vague memory. Does anyone recall this? TIA JB


LT Spice problem

Started by krw...@att.bizzzzzzzzzzzz in sci.electronics.design11 years ago 26 replies

I'm trying to add the models of a couple of N-FETs I use to LTSpice. I'm getting a simulation-time error that I can't resolve. Any ideas? ...

I'm trying to add the models of a couple of N-FETs I use to LTSpice. I'm getting a simulation-time error that I can't resolve. Any ideas? Thanks. The error: |M1: Only a level 9 B3SOI can have 6 nodes It thinks I have six terminals on my transistor and only SOI models have that many? Looks like only three to me. The circuit: Version 4 SHEET 1 880 680 WIRE 144 -80 16 -80 ...


Faster than 2n7002

Started by Anonymous in sci.electronics.design8 years ago 29 replies

Cool part. 20V enhancement N-ch MOSFET. Vgs.th(100uA)

Cool part. 20V enhancement N-ch MOSFET. Vgs.th(100uA)


LTSpice Sim of Strange Old Transistor Circuit

Started by Robert Miller in sci.electronics.design5 years ago 6 replies

I decided to delve deeper into the mystery. Here is an .asc file of the strange circuit previously under...

I decided to delve deeper into the mystery. Here is an .asc file of the strange circuit previously under discussion. https://app.box.com/s/cwlnjt5zh14ubdaul4odvhcehw2tnapa Unless I have made an error, it appears to be non-functional. I am now preparing a bonfire for my collection of such old documents. Robert Miller


Small voltage detector

Started by Piotr Wyderski in sci.electronics.design7 years ago 26 replies

Hello, I know that there are hordes of nice comparators in SOT-23, but just out of curiosity: is it possible to build a small voltage...

Hello, I know that there are hordes of nice comparators in SOT-23, but just out of curiosity: is it possible to build a small voltage (relatively to GND) detector using just one transistor and no negative power supplies? If the voltage is > = VBE, i.e. 0.7V, then the task is a no-brainer, but how about half of that, say, 0.3V? Best reagrds, Piotr


Superhet & SuperSpice & Nostalgia

Started by Kevin Aylward in sci.electronics.design3 years ago 1 reply

All.... A reminder that SS was freebeed a while ago...just download the current install. For those real analog enthusiasts that remember...

All.... A reminder that SS was freebeed a while ago...just download the current install. For those real analog enthusiasts that remember the 6 transistor Superhet AM radio..... There is a fully working front end simulation schematic in the examples. It has all the key features such as the self oscillating mixer and 3 stage IF filters and detector Just load in: SuperHetRa...


Does a wide bandgap JFET glow under forward bias?

Started by Tim Williams in sci.electronics.design2 years ago 23 replies

Yes. https://www.eevblog.com/forum/projects/transistors-die-pictures/msg3234138/#msg3234138 Tim -- Seven Transistor Labs, LLC Electrical...

Yes. https://www.eevblog.com/forum/projects/transistors-die-pictures/msg3234138/#msg3234138 Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Design Website: https://www.seventransistorlabs.com/


SPICE models published

Started by Tim Williams in sci.electronics.design3 years ago 3 replies

Releasing some of my models today: https://www.seventransistorlabs.com/Modeling/index.html Tim -- Seven Transistor Labs, LLC Electrical...

Releasing some of my models today: https://www.seventransistorlabs.com/Modeling/index.html Tim -- Seven Transistor Labs, LLC Electrical Engineering Consultation and Design Website: https://www.seventransistorlabs.com/


LM358 RRO

Started by Anonymous in sci.electronics.design3 years ago 13 replies

I think this will work. https://www.dropbox.com/s/c1ivyztss1r1t10/LM358_RRO.JPG?raw=1 One charm of the old parts is that the data sheet...

I think this will work. https://www.dropbox.com/s/c1ivyztss1r1t10/LM358_RRO.JPG?raw=1 One charm of the old parts is that the data sheet includes a transistor-level schematic. -- John Larkin Highland Technology, Inc The cork popped merrily, and Lord Peter rose to his feet. "Bunter", he said, "I give you a toast. The triumph of Instinct over Reason"