Nexperia

P

Phil Hobbs

Guest
I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On Sat, 28 Sep 2019 17:14:10 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs
Click to expand...

There are still lots of fast NPNs. Not so many fast PNPs or low noise
jfets.



--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
On Saturday, September 28, 2019 at 5:53:44 PM UTC-4, jla...@highlandsniptechnology.com wrote:
On Sat, 28 Sep 2019 17:14:10 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs

There are still lots of fast NPNs. Not so many fast PNPs or low noise
jfets.
But higher current? and not low input C?
Click to expand...

George H.
--

John Larkin Highland Technology, Inc

lunatic fringe electronics
Click to expand...
 
On 9/28/19 6:46 PM, Phil Hobbs wrote:
On 9/28/19 5:53 PM, jlarkin@highlandsniptechnology.com wrote:
On Sat, 28 Sep 2019 17:14:10 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs

There are still lots of fast NPNs. Not so many fast PNPs or low noise
jfets.

ON Semi has resuscitated a bunch of old Sanyo JFETs, e.g. the CPH3910.
The title of fastest PNP in production has declined from 8 GHz to about
600 MHz.  I have a couple of reels of BFT92s, which is great for
proprietary products but useless for licensing.

Still, those current mirrors are good enough for some interesting things
if you apply a bandaid to equalize the dissipation and V_CE on both
sides.  Not as good as a CA3046, but what can you do?

Cheers

Phil Hobbs
Click to expand...

Renesas/Intersil makes a high-speed 3046 and 3096 variant, NPN Ft of 8
GHz and PNP Ft of 5.5 GHz.

It isn't cheap and the CE voltage is pretty limited. but there's stock
available and looks to be current production item.

<https://www.mouser.com/ProductDetail/Renesas-Intersil/HFA3096BZ96?qs=sGAEpiMZZMvDjfggS9kWsfwG9%2F2p%252Bq0ftYGEdUlOUog%3D>
 
On 9/28/19 5:53 PM, jlarkin@highlandsniptechnology.com wrote:
On Sat, 28 Sep 2019 17:14:10 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs

There are still lots of fast NPNs. Not so many fast PNPs or low noise
jfets.
Click to expand...

ON Semi has resuscitated a bunch of old Sanyo JFETs, e.g. the CPH3910.
The title of fastest PNP in production has declined from 8 GHz to about
600 MHz. I have a couple of reels of BFT92s, which is great for
proprietary products but useless for licensing.

Still, those current mirrors are good enough for some interesting things
if you apply a bandaid to equalize the dissipation and V_CE on both
sides. Not as good as a CA3046, but what can you do?

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
On 9/28/19 7:08 PM, bitrex wrote:
On 9/28/19 6:46 PM, Phil Hobbs wrote:
On 9/28/19 5:53 PM, jlarkin@highlandsniptechnology.com wrote:
On Sat, 28 Sep 2019 17:14:10 -0400, Phil Hobbs
pcdhSpamMeSenseless@electrooptical.net> wrote:

I notice that Nexperia has picked up a couple of current mirror parts
that Infineon discontinued awhile back: BCV61/BCV62.

Wonder if there's hope for other useful parts, e.g. the BFG25A/X,
BFT25A, BF862, etc.?

Still, a couple of old friends are back in the nabe.

Cheers

Phil Hobbs

There are still lots of fast NPNs. Not so many fast PNPs or low noise
jfets.

ON Semi has resuscitated a bunch of old Sanyo JFETs, e.g. the CPH3910.
The title of fastest PNP in production has declined from 8 GHz to
about 600 MHz.  I have a couple of reels of BFT92s, which is great for
proprietary products but useless for licensing.

Still, those current mirrors are good enough for some interesting
things if you apply a bandaid to equalize the dissipation and V_CE on
both sides.  Not as good as a CA3046, but what can you do?

Cheers

Phil Hobbs


Renesas/Intersil makes a high-speed 3046 and 3096 variant, NPN Ft of 8
GHz and PNP Ft of 5.5 GHz.

It isn't cheap and the CE voltage is pretty limited. but there's stock
available and looks to be current production item.

https://www.mouser.com/ProductDetail/Renesas-Intersil/HFA3096BZ96?qs=sGAEpiMZZMvDjfggS9kWsfwG9%2F2p%252Bq0ftYGEdUlOUog%3D
Click to expand...

The problem with the HFA parts is that their Rbb' is horrible--like 300
ohms. I've been round that mulberry bush, believe me.

Cheers

Phil Hobbs


--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com
 
Phil Hobbs wrote...
I notice that Nexperia has picked up a couple of current mirror
parts that Infineon discontinued awhile back: BCV61 / BCV62.
Click to expand...

The oldest NXP datasheet in my computer is labeled Philips
and dated 1997. The oldest Infineon datasheet in labeled
Siemens, the file is from a CD dated 1997, but there's a
5.91 mark on the datasheet. Octopart has both company's
versions still well in stock. It doesn't appear anything
old was recently picked up by anybody, sorry!


--
Thanks,
- Win
 
On 29 Sep 2019 06:26:48 -0700, Winfield Hill <winfieldhill@yahoo.com>
wrote:

Phil Hobbs wrote...

I notice that Nexperia has picked up a couple of current mirror
parts that Infineon discontinued awhile back: BCV61 / BCV62.

The oldest NXP datasheet in my computer is labeled Philips
and dated 1997. The oldest Infineon datasheet in labeled
Siemens, the file is from a CD dated 1997, but there's a
5.91 mark on the datasheet. Octopart has both company's
versions still well in stock. It doesn't appear anything
old was recently picked up by anybody, sorry!
Click to expand...

One of my hobbies is designing pulse generator output stages. I had a
cool one that used an Infineon CLY2 mesfet. It was discontinued but
Triquint picked it up. Then they discontinued it.

Then I had a great one with an HP Phemt. Then it was Agilent. Then it
was Avago. Now it's gone. So are its fast SOT89 PNP drivers.

I am optimistic that the EPC GaN fets will be used in billions of
cheap wall warts so they might keep making them for a while.



--

John Larkin Highland Technology, Inc

lunatic fringe electronics
 
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