BCX19LT1G

$0.16

Description：TRANS NPN 45V 0.5A SOT23-3
Series：-

SKU:27bcdd8aef08 Category: Single Bipolar Transistors Brand: onsemi

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Product introduction

Product Detailed Parameters

Description：TRANS NPN 45V 0.5A SOT23-3
Series：-
Mfr：onsemi
Package：Tape & Reel (TR),Cut Tape (CT)
Transistor Type：NPN
Current - Collector (Ic) (Max)：500 mA
Voltage - Collector Emitter Breakdown (Max)：45 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：300 mW
Frequency - Transition：-
Operating Temperature：-55°C ~ 150°C (TJ)
Mounting Type：Surface Mount
Package / Case：TO-236-3, SC-59, SOT-23-3
Supplier Device Package：SOT-23-3 (TO-236)
Grade：-
Qualification：-

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BCX19LT1G

Overview

The BCX19LT1G is a single NPN bipolar junction transistor manufactured by onsemi, housed in an SOT-23-3 surface-mount package. It supports a maximum collector-emitter voltage of 45 V and a continuous collector current of 500 mA. The device features a power dissipation rating of 225 mW and operates within a temperature range of -55 °C to +150 °C. Key electrical characteristics include a collector-base voltage of 50 V, an emitter-base voltage of 5 V, and a collector-emitter saturation voltage of 620 mV.

Feature Summary

Single NPN configuration designed for general-purpose switching applications
Miniature SOT-23-3 surface-mount footprint for space-constrained designs
High thermal stability with extended operating temperature range up to +150 °C

Applications

General-purpose low-power switching circuits
Signal amplification stages
Driver interfaces for low-current loads

Procurement Notes

Verify the specific datasheet revision and AEC-Q101 qualification status if automotive compliance is required, as standard industrial versions may differ. Confirm pinout orientation matches the target PCB footprint, as SOT-23 variants can vary between manufacturers. Ensure storage conditions adhere to moisture sensitivity level requirements prior to reflow soldering to prevent package damage during assembly.

Selection Notes

Select this component when a compact NPN switch is needed with moderate current handling capabilities around 500 mA. Compare against the BCW72LT1G if lower current (100 mA) but higher bandwidth is sufficient for the application. Consider the BC846BLT3G for lower voltage requirements or different gain characteristics. Evaluate thermal management needs given the 225 mW power dissipation limit in small packages.

Part Context

This part belongs to the BCX19L series of silicon NPN transistors from onsemi. It serves as a surface-mount alternative to through-hole equivalents, maintaining similar electrical performance in a smaller form factor. The series is engineered for reliability in consumer electronics and industrial control systems requiring robust general-purpose switching.