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BAS29

Name: BAS29
Rating: 4.7 (12 reviews)

DIODE GEN PURP 120V 200MA SOT23

製造商
製造商。部分 #BAS29
包 TO-236-3, SC-59, SOT-23-3
資料表 BAS29 DataSheet
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規格

Supplier	onsemi
Package	Tape & Reel (TR),Cut Tape (CT)
ProductStatus	Active
DiodeType	Standard
Voltage-DCReverse(Vr)(Max)	120 V
Current-AverageRectified(Io)	200mA
Voltage-Forward(Vf)(Max)@If	1 V @ 200 mA
Speed	Small Signal =< 200mA (Io), Any Speed
ReverseRecoveryTime(trr)	50 ns
Current-ReverseLeakage@Vr	100 nA @ 90 V
Capacitance@VrF	2pF @ 0V, 1MHz
MountingType	Surface Mount
Package/Case	TO-236-3, SC-59, SOT-23-3
SupplierDevicePackage	SOT-23-3

概述

Description

BAS29 is a family of small-signal NPN bipolar transistors used for general-purpose switching and amplification in low- to medium-current circuits. The BAS prefix appears on several variants (A/B/C, different hFE and Vce ratings) from various manufacturers, often in packages like TO-92 or SOT-23. Because variants differ in gain, voltage, and current limits, always consult the specific datasheet for the exact BAS29 version you’re using. Typical uses include signal amplification, buffering, and fast switching in hobbyist and consumer electronics. In circuits, you’d usually bias it in a common-emitter configuration with a base resistor to set base current, a collector load up to its Vce rating, and proper biasing to control saturation. Key parameters to verify: maximum Ic, Vce, hFE (gain), and power dissipation. For pinout, package, and precise electrical specs, refer to the exact BAS29 variant from the manufacturer.

Package

BAS29 is a fast-switching diode. Common package options are through-hole DO-41 axial and surface-mount SMD variants such as SOD-123.

Pinout

- Pin count: 3 pins
- Function: BAS29 is a small-signal transistor (NPN) used for switching and low-power amplification in circuits (typically in a SOT-23 package).

Manufacturer

BAS29 is not tied to a single manufacturer; it’s a standard fast-switching diode produced by several vendors, including Nexperia, Vishay, Diodes Incorporated, and ON Semiconductor.
These companies are large, multinational semiconductor manufacturers that design and fabricate discrete components (diodes, transistors, etc.) and other electronic components.

Application

BAS29 is a small-signal NPN transistor used for general-purpose amplification and switching in low-power electronics. Common applications:
- Signal amplification in audio/ RF front-ends
- Sensor signal conditioning and interfacing
- Relay and LED driver stages
- Logic-level switching and small digital drivers
- Oscillators and timing circuits
- Hobbyist/prototyping transistor switches in low-power circuits

Equivalent

BAS29 is a general-purpose NPN small-signal transistor. Common equivalents:
- Through-hole: 2N3904, BC547, BC549
- SMD: MMBT3904, BC847A/B, BC846/BC849
- Other close: 2N5088 (higher gain)
Note: pinouts vary by package; always verify datasheet for Vce, Ic, and hFE before substituting.