規格
| 屬性 | 價值 |
| Supplier | Nexperia USA Inc. |
| Package / Case | Tape & Reel (TR),Cut Tape (CT) |
| Part Status | Active |
| Diode Type | Standard |
| Voltage - DC Reverse (Vr) (Max) | 300 V |
| Current - Average Rectified(Io) | 250mA (DC) |
| Voltage - Forward (Vf) (Max) @ If | 1.1 V @ 100 mA |
| Speed | Fast Recovery =< 500ns, > 200mA (Io) |
| Reverse Recovery Time (trr) | 50 ns |
| Current - Reverse Leakage @ Vr | 150 nA @ 250 V |
| Capacitance @ Vr F | 5pF @ 0V, 1MHz |
| Mounting Type | Surface Mount |
| Supplier Device Package | SOD-523 |
概述
Description
Do you mean BAS521 (a transistor) or the course code BAS521-115? Here’s a quick intro to the transistor:
- BAS521: small-signal NPN transistor in SOT-23 for switching and low-power amplification.
- Typical specs (varies by vendor): Vce ≈ 25 V, Ic ≈ 100 mA, hFE ≈ 100–600.
- Pinout (SOT-23 common): B, C, E; always confirm with the datasheet.
- Uses: signal switching, biasing, and low-power amplification; include a base resistor to limit base current; watch for safe operating area and temperature.
If you meant BAS521-115 as a course, please specify the institution. A generic intro would cover: basics of business analytics and statistics, data wrangling, visualization, probability and distributions, regression and forecasting, and hands-on practice with Excel, R, or Python.
- BAS521: small-signal NPN transistor in SOT-23 for switching and low-power amplification.
- Typical specs (varies by vendor): Vce ≈ 25 V, Ic ≈ 100 mA, hFE ≈ 100–600.
- Pinout (SOT-23 common): B, C, E; always confirm with the datasheet.
- Uses: signal switching, biasing, and low-power amplification; include a base resistor to limit base current; watch for safe operating area and temperature.
If you meant BAS521-115 as a course, please specify the institution. A generic intro would cover: basics of business analytics and statistics, data wrangling, visualization, probability and distributions, regression and forecasting, and hands-on practice with Excel, R, or Python.
Equivalent
BAS521 is a general-purpose NPN transistor in SOT-23. Common cross-refs:
- MMBT3904, PMBT3904 (40 V, ~200 mA)
- MMBT2222A (40 V, ~600 mA)
- BC847B/C (45 V, ~500 mA)
- BC817-25 (45 V, ~500 mA)
Note: pick a part with similar Vce and Ic and verify pinout for your board.
- MMBT3904, PMBT3904 (40 V, ~200 mA)
- MMBT2222A (40 V, ~600 mA)
- BC847B/C (45 V, ~500 mA)
- BC817-25 (45 V, ~500 mA)
Note: pick a part with similar Vce and Ic and verify pinout for your board.
Pinout
Do you mean two separate parts: BAS521 and BAS115? I need clarification because those are different diodes with different packages. If so, please confirm and I will provide each part’s pin count and function.
Manufacturer
Manufacturer: Nexperia (formerly Philips Semiconductors / NXP Semiconductors).
Company type: A multinational Dutch semiconductor company specializing in discrete and mixed-signal devices (transistors, diodes, and related components).
Company type: A multinational Dutch semiconductor company specializing in discrete and mixed-signal devices (transistors, diodes, and related components).
Application
BAS521 is a small-signal NPN transistor (SMD). Common applications: fast switching and amplification in low-power circuits; microcontroller I/O drivers and LED/relay drivers; level shifting and buffering; sensor signal conditioning; small-signal amplification in audio/sensor front ends; switching regulator PWM/control stages.
Package
SOT-23 (3-pin) surface-mount package.
