HISTORY:
Sustainability is the name of the game! Anything (that has been tested and still functioning properly) should be repurposed creating saving in wasted Ee and reducing the poisoning our environment when items are buried in the earth at the local tip needlessly.
Never heard of Ee? It is a concept that creates a measurement of ALL things (not just electronics) that humans have made and the energy used in obtaining the raw material, processing the materials right through to a finished product and even should include the shipping of the item to the distributors/retailers.
If you would like to know more about Ee values, please take a look HERE
This electronic component is brand new, old (very old!) stock.
As this is brand new (but very old stock from my personal workshop)
How long since you've seen some Germanium transistors from the OC series in the original aluminium over glass casing? These were in common use way back when I was a teenager in the late 1960's, I cut my teeth on devices such as this - this was the beginnings of the "new fandangled" semiconductor technology around the mid 1960's
Up until this time in the 1960's valves were the thing, then along came these little beasties!
I know it is Mullard manufactured because our one and only electronic supply shop in Christchurch NZ only stocked Mullard valves and semiconductors - I bought it from this shop when I was a teenager.
After all these years, I still have this semiconductor - not much call for an old Ge transistor these days and I expect the new owner will only want this for 'museum' purposes - at least that's better than being buried in the ground!
MULLARD - Germanium Transistor
Made in England
Circa late 1960's ~ 1970's (60+ years old!)
Type: OC77
Batch code: 1RP
PNP
Germanium junction semiconductor
SO-2 case, aluminium over a glass envelope (don't be fooled by later OC77 releases I see online)
Red dot on one side is clearly visible (this red dot is VITAL, it denotes the collector)
Leads are tin plated
Purpose: small signal
Even after all these years, datasheets are readily available online but I have also extracted some important information from the datasheet and included this in one of the photographs.
WARNING!
If ever the new owner was considering using this device, NEVER bend the leads less than 1.5mm from the body. The packaging is quite delicate and if you make a bend too close to the body, the lead is likely to snap off!
COSMETIC CONDITION:
Amazing after all these years sitting in my spare parts drawers!
Silver body is undamaged and the coding printed on the casing is easily readable
Leads are full length and have not been cut
Light ~ medium oxidisation of the lead tin plating has occurred (to be expected) but a careful clean up will make these easy to solder (if ever that was going to happen!)
NEW Very OLD stock in sealed clear plastic packaging, then within a crystal clear small acrylic bottle for safe keeping!
