onsemi Bipolar NPN Transistor 500 mA, 45 V, 3-Pin SOT-23 Package BCX19LT1G

onsemi BCX19LT1G is a bipolar NPN transistor engineered specifically for linear and switching applications where a maximum collector current of 500 mA and a collector-emitter voltage rating of 45 V are required. Packaged in a compact 3-pin SOT-23 surface mount package, this component is optimized for space-constrained printed circuit board layouts and relatively low power dissipation scenarios up to 300 mW.

This transistor provides a minimum DC current gain (hFE) of 40, ensuring efficient signal amplification and switching capability. It has a maximum collector-base voltage of 50 V and an emitter-base voltage maximum of 5 V, aligning well with typical transistor usage in automotive, industrial, and general electronics circuits.

The maximum operating temperature rating of 150°C and qualification under the automotive standard AEC-Q101 makes the BCX19LT1G suitable for harsh environments demanding reliability and durability. It is lead-free and meets environmental standards with halogen and bromine-free packaging.

The transistor dimensions are compact at approximately 3.04 mm length, 1.4 mm width, and 1.11 mm height, facilitating integration in miniature electronic assemblies. Its 3-pin configuration allows simple integration for switching and amplification use cases in power and general electronics applications.

Supports a maximum DC collector current of 500 mA for robust switching applications. Maximum collector-emitter voltage of 45 V suitable for low power electronic circuits. Compact SOT-23 package ideal for surface mount technology and space saving designs.

Minimum DC current gain (hFE) of 40 ensures reliable amplification performance. Maximum power dissipation up to 300 mW for moderate power handling capabilities. NPN transistor configuration compatible with common switching and amplification circuits.

Operational temperature up to 150°C for industrial and automotive environments. Pin count of 3 configured for simplicity and standard transistor interfacing. Automotive-grade AEC-Q101 qualification ensuring quality for automotive applications.

Manufactured in China with RoHS compliancy and halogen-free construction.

This device is ideal for industrial and automotive electronics, linear circuit designs, and as a low power switching transistor in consumer and commercial electronic products. Its small form factor and thermal ratings make it suitable for embedded system designs, communications equipment, and power management circuits.

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