Specs side by side
2 parts compared · 16 differing specs across 16 total parameters.
| Parameter | ||
|---|---|---|
| Voltage - Collector Emitter Breakdown | - | 45 V |
| Operating temperature | - | 150°C(TJ) |
| Frequency - Transition | - | 300MHz |
| Case | TO-92 | TO-226-3, TO-92-3 (TO-226AA) |
| Package | - | Bulk |
| Component Category | Small-Signal Transistors (Japanese Standard) | - |
| Current - Collector (ic) | - | 100 mA |
| Current - Collector Cutoff | - | 15nA (ICBO) |
| Dc Current Gain (hfe) (min) @ Ic, Vce | - | 110 @ 2mA, 5V |
| Fet Type | - | NPN |
| Market Reality | The 2SC945 / 2SA733 pair is the Japanese-standard small-signal transistor of a generation of industrial controls, audio equipment and instruments - and it remains a daily repair item in Chinese production too, where the shorthand names C945 and A733 are stencilled on half the boards. Supply is continuous through second-source fabs, but three naming systems collide on this part: the C945 shorthand, the rank letters (O / Y / GR / BL), and the Japanese E-C-B pin order that is the mirror of the European C-B-E parts people try to substitute. | - |
| Mounting | - | Through Hole |
| Power - Max | - | 500 mW |
| Role In Circuit | Original Reference Part | - |
| Sourcing Status | Active Shenzhen Spot Sourcing (24–48h) | - |
| Vce Saturation (max) @ Ib, Ic | - | 600mV @ 5mA, 100mA |
Parts
- 2SC945 / 2SA733 · renesas
- BC547 · onsemi