C1124 Transistor Datasheet — Better
You won't find the 2SC1124 at Mouser or DigiKey. Production stopped in the late 1990s.
| Parameter | Typical value | Meaning | |-----------|--------------|---------| | Type | NPN Silicon | Polarity | | VCEO | 20V | Max collector-emitter voltage | | VCBO | 30V | Max collector-base voltage | | IC | 50mA | Max continuous collector current | | PC | 200~300mW | Max power dissipation (depends on package: TO-92 or SOT-89) | | hFE (DC gain) | 50~250 (typ. 90) | Current gain @ 10mA | | fT | ~600 MHz | Transition frequency (RF use) | | NF | 3~5 dB | Noise figure (at ~100 MHz) | c1124 transistor datasheet better
Important: The exact values vary by manufacturer suffix (e.g., 2SC1124-O, -Y, -GR). Always check the "hFE classification" table in the datasheet. You won't find the 2SC1124 at Mouser or DigiKey
If you are trying to match specs, here are the critical parameters: 90) | Current gain @ 10mA | |
| Parameter | Symbol | Rating | Unit | | :--- | :--- | :--- | :--- | | Collector-Base Voltage | $V_CBO$ | 50 | V | | Collector-Emitter Voltage | $V_CEO$ | 40 | V | | Emitter-Base Voltage | $V_EBO$ | 5 | V | | Collector Current | $I_C$ | 1.0 | A | | Power Dissipation | $P_C$ | 0.8 | W | | DC Current Gain | $h_FE$ | 40 - 240 | | | Transition Frequency | $f_T$ | 150 | MHz |
When you find a datasheet, don't just look at the max ratings. To truly do "better" than the original, analyze these three charts:
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