QST7 transistor is a low frequency amplifier with large collector current and low saturation voltage.
The QST7 is a low‑frequency amplifier transistor offered by ROHM. It is designed for driver applications and features a large collector current capability.
The document lists absolute maximum ratings, detailed electrical characteristics, packaging dimensions, and a series of characteristic curves that illustrate performance parameters such as saturation voltage, current gain, and transition frequency.
| Collector‑emitter saturation voltage (VCE(sat)) | ≤ −370 mV at IC = 1 A, IB = 50 mA |
|---|---|
| DC current gain (hFE) | 270 – 680 (typical) |
| Transition frequency (fT) | ≈ 280 MHz |
| External dimensions (mm) | 1.6 × 2.8 × 0.4 × 0.16 |
The maximum collector current is 1 A, as shown in the absolute maximum ratings.
The typical DC current gain ranges from 270 to 680.
The transition frequency is approximately 280 MHz.
The package measures 1.6 mm × 2.8 mm × 0.4 mm × 0.16 mm.