Nec B58944 Datasheet 2021 Repack -

| Characteristic | Test Condition | Min | Typ | Max | Unit | |----------------|----------------|-----|-----|-----|------| | DC Current Gain (hFE) | VCE = 5V, IC = 500mA | 40 | 100 | 200 | - | | Collector-Emitter Saturation Voltage | IC = 2A, IB = 0.2A | - | 0.5 | 1.2 | V | | Base-Emitter On Voltage | VCE = 5V, IC = 1A | - | 0.9 | 1.2 | V | | Transition Frequency (fT) | VCE = 10V, IC = 100mA | 50 | 80 | - | MHz | | Collector Cutoff Current | VCB = 60V, IE = 0 | - | - | 10 | µA |

Integrated circuit (IC) driver designed for Engine Control Units (ECUs). Compliance: Generally listed as Lead-free / RoHS Compliant . Common Applications nec b58944 datasheet 2021

If you can describe the markings exactly (e.g., "B58944" in one line, or "B589" over "44"), I can narrow it down further. | Characteristic | Test Condition | Min |