Specs side by side
2 parts compared · 16 differing specs across 16 total parameters.
| Parameter | ||
|---|---|---|
| Voltage - Collector Emitter Breakdown | 40 V | - |
| Operating temperature | 175°C (TJ) | - |
| Frequency - Transition | 300MHz | - |
| Case | TO-206AA, TO-18-3 Metal Can | TO-92 / SOT-23 |
| Package | Bulk | - |
| Component Category | - | Small-Signal Transistors |
| Current - Collector (ic) | 800 mA | - |
| Current - Collector Cutoff | 10nA | - |
| Dc Current Gain (hfe) (min) @ Ic, Vce | 100 @ 150mA, 10V | - |
| Fet Type | NPN | - |
| Market Reality | - | The 2N3904 NPN and its 2N3906 PNP complement are the American small-signal standard: 40V, 200mA, 625mW, TO-92 with E-B-C lead order, gain optimized around 10mA, and SOT-23 twins (MMBT3904 / MMBT3906) in more new designs than the through-hole originals. The repair trap has two layers: the European counterpart BC547 is C-B-E in the same TO-92 body - a straight insertion swaps emitter and collector into reverse-active operation - and the SOT-23 twins number their pins 1 = Base, 2 = Emitter, 3 = Collector, which follows neither lead order. Every substitution in this family answers the pinout question before the electrical one. |
| 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 | 1V @ 50mA, 500mA | - |
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