Ok, thank you for explaining that, I think I'm finally understanding this. The Vce is what determines where the transistor is saturated or not, the lower it is the more saturated the transistor is.
How do we go about determining the maximum hFE a transistor has?
I will use PN100 NPN and MPS751 PNP as an example: https://www.electro-tech-online.com/custompdfs/2010/05/PN100PDF.pdf and https://www.electro-tech-online.com/custompdfs/2010/05/MPS650-DPDF.pdf
PNP: This transistor is saturated, the Vbe max is 1.2V.
NPN: The collector will receive 10.8V so it's Vce will have a minimum of 1.2V (it could have a bit less Vce e.g. 1V than this if it's more of a typical transistor). From the hFE section, I see it says Ic = 100mA, Vce = 1V, hFE = 100 Min, but there is no maximum, why is this?
Do we use the hFE graph to approximate the maximum hFE even though it's for a Vce of 5V? E.g. 100mA Ic = 250 hFE so we might add 50 more to that to be safe to have 300 hFE?
Or should we just look at the hFE section, look at the maximum under any conditions (600 hFE in this case) and use that as the max hFE?
Thanks!
How do we go about determining the maximum hFE a transistor has?
I will use PN100 NPN and MPS751 PNP as an example: https://www.electro-tech-online.com/custompdfs/2010/05/PN100PDF.pdf and https://www.electro-tech-online.com/custompdfs/2010/05/MPS650-DPDF.pdf
PNP: This transistor is saturated, the Vbe max is 1.2V.
NPN: The collector will receive 10.8V so it's Vce will have a minimum of 1.2V (it could have a bit less Vce e.g. 1V than this if it's more of a typical transistor). From the hFE section, I see it says Ic = 100mA, Vce = 1V, hFE = 100 Min, but there is no maximum, why is this?
Do we use the hFE graph to approximate the maximum hFE even though it's for a Vce of 5V? E.g. 100mA Ic = 250 hFE so we might add 50 more to that to be safe to have 300 hFE?
Or should we just look at the hFE section, look at the maximum under any conditions (600 hFE in this case) and use that as the max hFE?
Thanks!