Data on the specs of some transistors, can be a little confusing because from my experience some info only provides the continuous ratings, whilst other info only shows the absolute maximum ratings.
As far as I can tell, the 2N2222A is rated at as 800mA absolute maximum collector current, with the peak collector current also set at 800mA. Maximum power dissipation between 500mW and 1.2W depending on the ambient air temp.
The MPSA06 is rated at 500mA absolute maximum collector current, but also allows a peak current of 1 Amp, so make of that what you will. Maximum power dissipation is 625mW.
One transistor I have at my disposal and which I’ll be giving a try is the 2N3053. It is rated as 700mA absolute maximum collector current and similar voltages to the MPSA06, but its maximum power dissipation is 5W (it’s a physically larger transistor than the other two). One of its applications is power oscillators, so it might fit the bill nicely… if it works that is.
Other transistors that might be of interest are the BC537 and BC538s. Again similar voltage specs to the MPSA06, but with an absolute maximum collector current of 1 Amp (peak 1.5 Amp). They also have a maximum power dissipation ratings of 625mW.
I’ve built up quite an arsenal of components over the years, so I’ve got quite a few transistors at hand to experiment with. However, I daresay some are no longer available to buy due to being superseded.
Anyway, I hope to get around to trying different transistors in my JT variants so I’ll report my finding as and when.
Ironically, the one transistor I don’t have is the MPSA06!!
Farrah
As far as I can tell, the 2N2222A is rated at as 800mA absolute maximum collector current, with the peak collector current also set at 800mA. Maximum power dissipation between 500mW and 1.2W depending on the ambient air temp.
The MPSA06 is rated at 500mA absolute maximum collector current, but also allows a peak current of 1 Amp, so make of that what you will. Maximum power dissipation is 625mW.
One transistor I have at my disposal and which I’ll be giving a try is the 2N3053. It is rated as 700mA absolute maximum collector current and similar voltages to the MPSA06, but its maximum power dissipation is 5W (it’s a physically larger transistor than the other two). One of its applications is power oscillators, so it might fit the bill nicely… if it works that is.
Other transistors that might be of interest are the BC537 and BC538s. Again similar voltage specs to the MPSA06, but with an absolute maximum collector current of 1 Amp (peak 1.5 Amp). They also have a maximum power dissipation ratings of 625mW.
I’ve built up quite an arsenal of components over the years, so I’ve got quite a few transistors at hand to experiment with. However, I daresay some are no longer available to buy due to being superseded.
Anyway, I hope to get around to trying different transistors in my JT variants so I’ll report my finding as and when.
Ironically, the one transistor I don’t have is the MPSA06!!
Farrah
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