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BF421 Datasheet(PDF) 3 Page - Motorola, Inc |
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BF421 Datasheet(HTML) 3 Page - Motorola, Inc |
3 / 4 page BF421 BF423 3 Motorola Small–Signal Transistors, FETs and Diodes Device Data Figure 1. DC Current Gain IC, COLLECTOR CURRENT (mA) 150 –1.0 15 TJ = +125°C +25 °C –55 °C VCE = –10 Vdc 20 30 50 70 100 –2.0 –3.0 –5.0 –7.0 –10 –20 –30 –50 –80 –100 Figure 2. Capacitances VR, REVERSE VOLTAGE (VOLTS) –0.1 100 50 20 1.0 Ccb 10 2.0 5.0 Cib Figure 3. Current–Gain — Bandwidth Product IC, COLLECTOR CURRENT (mA) –50 –20 –10 –5.0 –2.0 100 60 40 30 20 0 TJ = 25°C VCE = –20 Vdc –1.0 IC, COLLECTOR CURRENT (mA) Figure 4. “On” Voltages –1.0 0 VCE(sat) @ IC/IB = 10 mA VBE @ VCE = –10 V –0.8 –0.6 –0.4 –0.2 VCE, COLLECTOR–EMITTER VOLTAGE (VOLTS) BF423 Figure 5. Active Region — Safe Operating Area BONDING WIRE LIMITATION SECOND BREAKDOWN LIMITATION BF421 100 µs 1.0 ms TJ = 150°C 1.5 WATT THERMAL LIMITATION @ TC = 25°C 625 mW THERMAL LIMITATION @ TA = 25°C –500 –5.0 –10 –20 –50 –100 –200 –0.2 –0.5 –1.0 –2.0 –5.0 –10 –20 –50 –100 –200 –500 –1000 80 –100 –50 –20 –10 –5.0 –2.0 –1.0 –100 –3.0 –5.0 –10 –20 –30 –50 –100 –200 –300 1.0 s |
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