OLD Ex workshop spare parts and small manufacturing stock
Make no mistake, we are talking late 1960's ~ 1970's on this one - it has been sitting in the spare parts drawer under "what on earth will I do with this?" but now it is time to find a new home.
Even as a museum piece, this semiconductor has its place in history!
These are some of my very old semiconductors, the legs are a bit dull looking - it happens when you get old!
I have cleaned up the legs just enough so that I could get reliable test results, results are below...
With these old devices (because I like to be sure and others have asked me for some basic testing to be done) I have grabbed a very basic transistor tester and the hFE measurement (DC current gain) has been printed onto the device casing, this is only a rough guide as the hFE will change depending upon temperature and Vce conditions.
If it is important for you to have particular devices (for matching as an example), please let me know which one(s) you would like to be supplied with, using the hFE as the reference.
SANYO - Transistor
Made in Japan
Type: 2SB405
Audio small signal
Lime green outer plastic coated metallic case which uses a Black square to denote the collector
ALL devices can clearly be identified as SANYO 2SB405 (sometimes it isn't easy with these old transistors)
Germanium
PNP
Vintage Japanese device which was commonly used in consumer audio equipment 50+ years ago!
Vce 25V
Veb 6V
Ic 720mW
Typical hFE should be around 100
Keep in mind that the hFE or even leakage currents are not the full story, it is HOW the transistor is biased that really matters. That said, I have tested each device and the hFE results are 49, 52, 53 & 57
Since testing, I have marked the case of each device with the test result - if you have a particular device you want, please quote the hFE required
Full part # on package SANYO 2SB405
T01 case (straight line, Black rectangle denoting the collector)
BRAND NEW Very Old Stock
Clean uncut legs, which could well do with a gentle (be very careful with these old legs) rub up/clean so that they can be soldered without issues.
*** Where the photograph shows multiple devices, this advertisement is for ONE device not all that are shown!
