BCX20

Description：TRANS NPN 25V 0.8A SOT-23-3
Series：-

SKU:66ab9eb205b3 Category: Single Bipolar Transistors Brand: onsemi

Consult the customer manager about the wholesale price.

consultation hotline：86-132-6715-2157

email：[email protected]
Contact the product manager for consultation. One-stop consultation is available.

Do you want a lower wholesale price? Please send us your inquiry and we will reply immediately.

Product introduction

Product Detailed Parameters

Description：TRANS NPN 25V 0.8A SOT-23-3
Series：-
Mfr：onsemi
Package：Tape & Reel (TR)
Transistor Type：NPN
Current - Collector (Ic) (Max)：800 mA
Voltage - Collector Emitter Breakdown (Max)：25 V
Vce Saturation (Max) @ Ib, Ic：620mV @ 50mA, 500mA
Current - Collector Cutoff (Max)：100nA (ICBO)
DC Current Gain (hFE) (Min) @ Ic, Vce：100 @ 100mA, 1V
Power - Max：310 mW
Frequency - Transition：-
Operating Temperature：150°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-236-3, SC-59, SOT-23-3
Supplier Device Package：SOT-23-3
Grade：-
Qualification：-

Download product information

BCX20

Overview

The BCX20 is an NPN epitaxial silicon transistor designed for switching and amplifier applications. It features a collector-emitter voltage (VCEO) of 25 V and a continuous collector current (IC) of 800 mA. The device offers high DC current gain, ranging from 40 to 600 depending on the operating point. Key electrical characteristics include a collector-emitter saturation voltage of 0.62 V at 500 mA and a base-emitter saturation voltage of 1.2 V at 1 A. It operates with a maximum junction temperature of 150 °C and is housed in a SOT-23 package.

Feature Summary

NPN epitaxial silicon construction optimized for general-purpose switching and linear amplifier tasks
High DC current gain capability across multiple collector current levels
Low saturation voltages for efficient power handling in switching circuits
Leadless SOT-23 surface-mount package design

Applications

General-purpose switching circuits
Linear amplifier stages
Driver circuits for loads requiring moderate current
Signal processing applications

Procurement Notes

Verify the manufacturer origin, as Fairchild Semiconductor was acquired by ON Semiconductor. Ensure the specific revision matches the required specifications. Confirm the package type is SOT-23 and check for any lead-free or RoHS compliance markings if environmental regulations apply to the end product. Cross-reference datasheet revisions to ensure parameter consistency.

Selection Notes

Select this component when an NPN transistor with a 25 V collector-emitter rating and up to 800 mA continuous current is required. Consider the SOT-23 package size constraints and thermal dissipation capabilities. Evaluate the hFE range requirements against the application's drive conditions. Compare saturation voltage specs against alternative transistors for efficiency needs.

Part Context

The BCX20 belongs to the family of small-signal NPN transistors used in consumer electronics and industrial control systems. Originally manufactured by Fairchild Semiconductor, production rights were transferred to ON Semiconductor following corporate acquisition. It serves as a standard replacement for legacy designs requiring reliable medium-current amplification or switching in compact form factors.

Replacement Considerations

Check for equivalents such as the BCX17 or BCX19 which share similar pinouts but may differ in voltage or current ratings. Verify that substitute components maintain the same SOT-23 footprint and electrical characteristics to ensure circuit compatibility without redesign.