Manchested
Member level 5

Hi,
I have a few questions regarding the temperature coefficient of transistors and diodes. Hope anyone could help me out.
1. Do VBe of a Bjt and a regular diode have the same T.C?
2. Do they mean the same? The resistances inside the components changes as the temperature increases.
3. Say If VBE of a Bjt has t.c of -2mV/C, and a diode has the same t.c.
If the diode is being used as a reference in an amplifier circuit, as the temperature increases, will the Ic remain approx. constant? I think that Voltage drop across the diode decreases, as temp increases, but since VBe will be more sensitive, as temp increases, so Ic will have no temperature dependence. am I correct?
4. If a diode has a positive T.C, does it mean the voltage drop across it increases as temp increases?
I have a few questions regarding the temperature coefficient of transistors and diodes. Hope anyone could help me out.
1. Do VBe of a Bjt and a regular diode have the same T.C?
2. Do they mean the same? The resistances inside the components changes as the temperature increases.
3. Say If VBE of a Bjt has t.c of -2mV/C, and a diode has the same t.c.
If the diode is being used as a reference in an amplifier circuit, as the temperature increases, will the Ic remain approx. constant? I think that Voltage drop across the diode decreases, as temp increases, but since VBe will be more sensitive, as temp increases, so Ic will have no temperature dependence. am I correct?
4. If a diode has a positive T.C, does it mean the voltage drop across it increases as temp increases?
Last edited: