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BF420 Fiches technique(PDF) 3 Page - Motorola, Inc |
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BF420 Fiches technique(HTML) 3 Page - Motorola, Inc |
3 / 4 page BF420 BF422 3 Motorola Small–Signal Transistors, FETs and Diodes Device Data Figure 1. DC Current Gain IC, COLLECTOR CURRENT (mA) 200 1.0 2.0 3.0 5.0 7.0 10 20 30 50 70 100 50 30 20 TJ = +125°C 25 °C –55 °C VCE = 10 Vdc 100 Figure 2. Capacitances VR, REVERSE VOLTAGE (VOLTS) 0.2 100 50 20 1.0 Ccb 10 2.0 5.0 0.5 1.0 2.0 5.0 10 20 50 100 200 Ceb Figure 3. Current–Gain — Bandwidth Product IC, COLLECTOR CURRENT (mA) 100 70 50 30 20 10 7.0 5.0 3.0 2.0 100 70 50 30 20 10 TJ = 25°C VCE = 20 V f = 20 MHz 1.0 IC, COLLECTOR CURRENT (mA) Figure 4. “On” Voltages 1.4 0 TJ = 25°C VBE(on) @ VCE = 10 V VCE(sat) @ IC/IB = 10 VBE(sat) @ IC/IB = 10 1.2 1.0 0.8 0.6 0.4 0.2 100 70 50 30 20 10 7.0 5.0 3.0 2.0 1.0 VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS) MPSA43 Figure 5. Maximum Forward Bias Safe Operating Area CURRENT LIMIT THERMAL LIMIT (PULSE CURVES @ TC = 25°C) SECOND BREAKDOWN LIMIT MPSA42 100 µs 1.0 ms TC = 25°C TA = 25°C CURVES APPLY BELOW RATED VCEO 500 0.5 1.0 2.0 5.0 10 20 50 100 200 100 50 20 10 5.0 2.0 1.0 0.5 200 500 10 µs 100 ms |
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