Box of 100 1T313V Ge Transistors Tested

[rossbalch]

Here's the results for the box of 100 1T313V, though there were 4 or 5, 1T313B sprinkled in. The data sheet suggested a hFE range of 20 - 250 so I had high hopes there would be a nice range of gains in the box. However, as you will see from the results, that was not the case. In fact I would say this batch was largely disappointing, though again a few diamonds in the rough, and low leakage throughout mean there are some devices of use here.

A bit of internet lore (https://www.diystompboxes.com/smfforum/index.php?topic=62472.0) suggests that this range of hFE has some precedent. Some further discussion suggests the presence of a shunt resistor which may lower the hFE reported by testers, though to what degree I don't know.

This was a factory sealed NOS box, and I have to say I did very much enjoy the unboxing experience. There was a bit of thrill to see the original data sheet in the box.

Device	Process	Technology	hFE	Iceo
1T313V	Ge	PNP	32.7	ND
1T313V	Ge	PNP	39.6	ND
1T313V	Ge	PNP	35	ND
1T313V	Ge	PNP	38.8	ND
1T313V	Ge	PNP	23.9	ND
1T313V	Ge	PNP	36	ND
1T313V	Ge	PNP	44.3	ND
1T313V	Ge	PNP	48	ND
1T313V	Ge	PNP	38.2	ND
1T313V	Ge	PNP	35.2	ND
1T313V	Ge	PNP	36.3	ND
1T313V	Ge	PNP	42.7	ND
1T313V	Ge	PNP	34.1	ND
1T313V	Ge	PNP	40.1	ND
1T313V	Ge	PNP	42.1	ND
1T313V	Ge	PNP	41.2	ND
1T313V	Ge	PNP	46.5	ND
1T313V	Ge	PNP	54.6	ND
1T313V	Ge	PNP	35	ND
1T313V	Ge	PNP	46.8	ND
1T313V	Ge	PNP	40.1	ND
1T313V	Ge	PNP	33.8	ND
1T313V	Ge	PNP	28.2	ND
1T313V	Ge	PNP	19.1	ND
1T313V	Ge	PNP	37.9	ND
1T313V	Ge	PNP	32.3	ND
1T313V	Ge	PNP	35.7	ND
1T313V	Ge	PNP	33.4	ND
1T313V	Ge	PNP	32.3	ND
1T313V	Ge	PNP	32.4	ND
1T313V	Ge	PNP	42.8	ND
1T313V	Ge	PNP	39.9	ND
1T313V	Ge	PNP	39.5	ND
1T313V	Ge	PNP	28.1	ND
1T313V	Ge	PNP	34.5	ND
1T313V	Ge	PNP	35.1	ND
1T313V	Ge	PNP	42.9	ND
1T313V	Ge	PNP	32.1	ND
1T313V	Ge	PNP	21.4	ND
1T313V	Ge	PNP	40.1	ND
1T313V	Ge	PNP	33.6	ND
1T313V	Ge	PNP	31.5	ND
1T313V	Ge	PNP	34.8	ND
1T313V	Ge	PNP	27.9	ND
1T313V	Ge	PNP	34.2	ND
1T313V	Ge	PNP	42.3	ND
1T313V	Ge	PNP	27.3	ND
1T313V	Ge	PNP	46.5	ND
1T313V	Ge	PNP	41.7	ND
1T313V	Ge	PNP	50.8	ND
1T313V	Ge	PNP	26.2	ND
1T313V	Ge	PNP	33.7	ND
1T313V	Ge	PNP	19.1	ND
1T313V	Ge	PNP	60.7	ND
1T313V	Ge	PNP	33.6	ND
1T313V	Ge	PNP	46.2	ND
1T313V	Ge	PNP	34.7	ND
1T313V	Ge	PNP	45.1	ND
1T313V	Ge	PNP	31.4	ND
1T313V	Ge	PNP	28.9	ND
1T313V	Ge	PNP	31.7	ND
1T313V	Ge	PNP	27.2	ND
1T313V	Ge	PNP	41.3	ND
1T313V	Ge	PNP	31.9	ND
1T313V	Ge	PNP	36.8	ND
1T313V	Ge	PNP	43.5	ND
1T313V	Ge	PNP	28.1	ND
1T313V	Ge	PNP	28	ND
1T313V	Ge	PNP	37.5	ND
1T313V	Ge	PNP	32.4	ND
1T313V	Ge	PNP	55	ND
1T313V	Ge	PNP	41	ND
1T313V	Ge	PNP	37.1	ND
1T313V	Ge	PNP	52.5	ND
1T313V	Ge	PNP	33.9	ND
1T313V	Ge	PNP	34.3	ND
1T313V	Ge	PNP	36.9	ND
1T313V	Ge	PNP	34.2	ND
1T313V	Ge	PNP	28.9	ND
1T313V	Ge	PNP	36.3	ND
1T313V	Ge	PNP	26.9	ND
1T313V	Ge	PNP	37	ND
1T313V	Ge	PNP	33.6	ND
1T313V	Ge	PNP	40.4	ND
1T313V	Ge	PNP	38.6	ND
1T313V	Ge	PNP	47.8	ND
1T313V	Ge	PNP	34.9	ND
1T313V	Ge	PNP	38.3	ND
1T313V	Ge	PNP	34.3	ND
1T313V	Ge	PNP	27.7	ND
1T313V	Ge	PNP	39.3	ND
1T313V	Ge	PNP	29.9	ND
1T313V	Ge	PNP	38.3	ND
1T313V	Ge	PNP	40.3	ND
1T313V	Ge	PNP	36.7	490
1T313V	Ge	PNP	68.6	13
1T313V	Ge	PNP	37	ND
1T313V	Ge	PNP	36.8	ND

 

[ivandelado]

Amazing... now I have this in my mind: how a fuzz face will sound with a 19 hfe and 40 hfe? have you try it?

 

[rossbalch]

Amazing... now I have this in my mind: how a fuzz face will sound with a 19 hfe and 40 hfe? have you try it?

Have yet to put any of these devices in a circuit. Funnily enough I'm not a big fuzz guy, I prefer the more "preamp" type stuff. I have so many on hand though I will likely give it a try.

 

[ivandelado]

Have yet to put any of these devices in a circuit. Funnily enough I'm not a big fuzz guy, I prefer the more "preamp" type stuff. I have so many on hand though I will likely give it a try.

I got some mp42b almost all between 40 and 60, I installed a 40 into the hudson broadcast clone and sounded amazing, Now I wonder how it will sound with something between 19 and 30

I guess some low gain rangemasters will be cool.