Operating Conditions for Q1

0:22

Considering.

Looking for "Recommended Operating Conditions" in BFU520Y.pdf

Looking for "Operating temperature range" in BFU520Y.pdf

Looking for "Collector-emitter voltage operating conditions" in BFU520Y.pdf

Looking for "Base-emitter voltage operating conditions" in BFU520Y.pdf

Looking for "input voltage levels" in BFU520Y.pdf

Looking for "output voltage levels" in BFU520Y.pdf

Recommended operating conditions for Q1
From the datasheet for Q1, the relevant recommended operating conditions are:

Operating conditions table


SymbolParameterConditionsMinTypMaxUnit
VCBCollector-base voltageOpen emitter--24V
VCECollector-emitter voltageOpen base--12V
VCECollector-emitter voltageShorted base--24V
VEBEmitter-base voltageOpen collector--2V
ICCollector current---30mA
PiInput powerZS = 50 Ω--10dBm
TjJunction temperature--40-+150°C
PtotTotal power dissipationTsp ≤ 87 °C--450mW

Notes


ItemDatasheet finding
Operating temperature rangeThe datasheet gives junction temperature range of -40 °C to +150 °C
Storage temperature-65 °C to +150 °C
Supply voltage rangeThis is a discrete RF transistor, so it does not specify a single IC-style supply range. Instead, the relevant operating voltages are VCB, VCE, and VEB above
Input/output voltage levelsThe datasheet does not provide digital-style input/output levels such as VIH, VIL, VOH, or VOL
Takeaway
For optimal operation of Q1, keep:
  • VCE ≤ 12 V with open base, or ≤ 24 V with shorted base
  • VCB ≤ 24 V
  • VEB ≤ 2 V
  • IC ≤ 30 mA
  • Input power ≤ 10 dBm
  • Junction temperature between -40 °C and +150 °C
If you want, I can also extract the absolute maximum ratings for Q1 and compare them against these recommended operating conditions.
Absolute max for Q1
Bias limits for Q1
Check Q1 in schematic
Review Q1 reliability
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    Low Noise Amplifiers (LNA) circuit

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    This project is a low-noise amplifier (LNA) circuit. It primarily uses a BFU520YX transistor as the active component. BNC connectors are used for signal input and output. The circuit is designed for high-frequency signals. #project #Template #projectTemplate #LNA #RF #BFU520YX

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