BAS21H

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BAS21H

250V INDEPENDENT TYPE 1.25V@200M

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  • Mfr.부분 #BAS21H
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사양

Part Status Active
Technology Standard
Voltage - DC Reverse (Vr) (Max) 250 V
Current - Average Rectified (Io) 200mA
Voltage - Forward (Vf) (Max) @ If 1.25 V @ 200 mA
Speed Small Signal =< 200mA (Io), Any Speed
Current - Reverse Leakage @ Vr 100 nA @ 200 V
Capacitance @ Vr, F 5pF @ 0V, 1MHz
Mounting Type Surface Mount
Package SC-76, SOD-323
Supplier Device Package SOD-323
Operating Temperature - Junction -55°C ~ 150°C
Packaging Cut Tape (CT), Tape & Reel (TR)
Reverse Recovery Time (trr) 50 ns

개요

Description

Could you specify the institution or program for BAS21H? It isn’t a universally standard course code, so I can tailor it precisely. If you just need a quick generic intro, you can use this template:
BAS21H is a foundational course in [field/discipline]. It introduces core concepts, theories, and methodologies, with practical applications in [areas]. Students will gain [skills], work on [labs/projects], and develop [competencies]. Prerequisites: [prereqs]. Assessment typically includes [exams, assignments, project].

Features

BAS21H features (typical, varies by manufacturer; check datasheet for exact numbers):
- NPN silicon small-signal transistor
- Fast switching speed for/general-purpose switching
- Package: SOT-23 (surface-mount)
- Collector current Ic: up to ~50 mA
- Collector-emitter voltage Vceo: around 65 V
- Transition frequency fT: roughly 200–300 MHz
- Gain (hFE): ~100–300 (at standard test conditions)
- Low noise, suitable for high-speed amplification
- Pb-free / compliant, tape-and-reel packaging options
Note: Exact ratings depend on the manufacturer and device lot. Always confirm with the specific BAS21H datasheet.

Package

BAS21H is a surface-mount diode in an SOT-23 (3-pin) package, used as a general-purpose high-speed switching diode.

Pinout

- Pin count: 2 pins (anode and cathode).
- Function: BAS21H is a small-signal fast-switching diode used for high-speed switching and general signal-diode applications.

Manufacturer

BAS21H is a general-purpose switching diode produced by several manufacturers; a common source is Nexperia.
Nexperia is a Dutch multinational semiconductor company that specializes in discrete and logic devices (diodes, transistors, MOSFETs) used in automotive, industrial, and consumer electronics.

Application

BAS21H is a general-purpose high-frequency NPN transistor (SMD). Typical application areas:
- RF and other small-signal amplification and switching
- Buffer/driver stages, oscillators, and mixer front-ends
- Detectors/demodulators and RF front-end circuits
- Use in radios, mobile devices, receivers, instrumentation, and other SMD circuits
Note: Check the datasheet for exact Vce, Ic, and ft specs for your design.

Equivalent

BAS21H is a high-gain NPN small-signal transistor. Common equivalents cross‑referenced for similar specs include:
- 2N3904 / MMBT3904 (SMD)
- BC847B / BC847BS (SMD)
- BC547B (through-hole)
- MMBT2222A (SMD)
Note: check package, pinout, Vce and hFE in the datasheet to ensure exact equivalence for your circuit.

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