BACKGROUND:
To many this old semiconductor is "junk" but I am big on reusing or repurposing old electronic components and hardware, particularly from the point of view of sustainability.
Sustainability far more than NOT burying waste material back into the earth but consciously recognising the energy expended to create the item through it's various "stages" in life, beginning with the raw materials being extracted from the earth, processed, finished and then fitted into equipment - every single step used energy which is referred to as embodied energy.
To give an approximate representation of how much energy was used in the WHOLE production process of an item, I have created what I refer to as the Ee (Embodied Energy) value, measured in Mj
The Ee value is an approximation only and usually measured in Mj.
Coming up with an Ee value is an attempt to take into account the energy used for extracting and processing of the raw materials, manufacturing of the component, distribution of the component(s) and final assembly of the component. In fact the measurement of Ee can become extremely complicated and technical, many tertiary institutions are involved in this specialised field of science.
I have used various reliable sources online to arrive at approximate Ee values, these are approximations and the sole purpose is to raise awareness of the extraordinary energy consumed in the creation of various electronic components and hardware - it may give you cause to think twice before wasting all that energy and burying it in the ground, with the possible side-effects of poisoning the environment due to leeching.
HERE is a page I have created which gives some tables and more detailed information about specific Ee values for different materials plus a link which you can use as a starting point to investigate Ee for yourself.
This old and difficult to source (at a reasonable price) transistor was extracted from the JVC BR-6400TR Professional VCR machine which has recently been on the "operating table"
SANKEN - Darlington Transistor
Type: 2SC1983
NPN
Vcb 150V
Vce 80V
Pc 30W
Ic 3A
hFE 500+
COSMETIC CONDITION:
USED
Clean
Leads desoldered relatively cleanly
TESTING:
Basic testing indicates the device is fully functional
hFE measurement spread from 470 ~ 1100
Breakdown ...
470 1x
600 ~700 band 3x
700 ~ 800 band 1x
800 ~ 900 band 1x
1000+ band 2x
As each device is tested, the hFE result has been written onto the rear heatsink area
Lead lengths are short at only 6mm but remain useable for point-to-point or PCB through hole use, reasonably clean, non-oxidised - perfectly solderable
These transistors have now been packed in a sealed clear plastic packet awaiting a new purpose in life!
If you would like a transistor or two in a specific hFE grouping, please let me know when ordering and I will make sure you receive those transistors with the current gains that are desired
