Ode to the SS8050 (or equivalent)

We tend to credit those who create an idea, not those who perfect it, forgetting that it is often only in the perfection of an idea that true progress occurs. Putting sixty-four transistors on a chip allowed people to dream of the future. Putting four million transistors on a chip actually gave them the future.

Malcolm Gladwell

Once upon a time when we knew way less about transistors (er, about 12 months ago) we thought that a big chunky TO-220 logic level monster was good for all applications, and ordered mosfets like the IRLZ44N  rated at 55V and a whopping 47A (!!) and the FQP30N06L rated at 60V and 32A accordingly. We even secured some Darlingtons like the TIP-12X series, and lately Darlington arrays in ICs like the ULN2803A and similar.

Then we spotted TO-92 packages and read online that they were awesome for amateur electronics - so away to the online store again and soon we had a swag of different transistors, each with their own confusing array of characteristics.

Finally (and hindsight is wonderful) we found the amazing and versatile SS8050 which is rated at 40V and 1.5A with a Base-Emitter Saturation Voltage of 1.2V (logic level) and is available in TO-92, SOT-89 and SOT-23 packages.

So much transistory goodness

Now we use the SS8050 almost exclusively and lately have been miniaturising via adapters (for instance the SOT-23 package is 3mm x 1.4mm, i.e. damn hard to see let alone solder)

It now appears in our joule thief torch for "spent" batteries as follows:

Just add used battery - and check out that stupidly cute gold button!

Miniaturising has been frustratingly good fun and very satisfying, for example when we modify a crappily designed early edition candle PCB to actually fire up with some creative use of 1206 form resistors.

Resurrecting a sick puppy with tiny tiny components!

Where will it all end? Probably when a stereo microscope is first ordered then sent back as the level of ridiculousness reaches it's zenith (any day now).

Returning from fantasy to reality it has been a really great festive season with many social engagements (yay we know people now) and the lovely Jackson gracing us with his presence. Take care y'all and come back soon for a visit.

At the Hobart airport post Christmas

P.S. not one ellipsis - take that Donald Trump!