LB1233, High-Voltage, High-Current Darlington Transistor Array, 50V, 500mA, 7-Channel

The LB1233 is a high-voltage, high-current Darlington transistor array developed by Sanyo Semiconductor. It consists of seven NPN Darlington pairs, each capable of handling collector-emitter voltages up to 50V and collector currents up to 500mA. The integration of base current limiting resistors within each Darlington pair simplifies circuit design by eliminating the need for external base resistors. This feature allows for direct interfacing with TTL and CMOS logic outputs, making the LB1233 suitable for a wide range of applications, including hammer drives, lamp controls, and relay drivers. Additionally, the device incorporates flyback diodes for each channel, providing protection against voltage transients when driving inductive loads. The LB1233 is housed in a 16-pin DIP package, facilitating easy integration into various electronic systems. ​

Key Features:

• High Voltage Tolerance: Capable of withstanding collector-emitter voltages (VCEO) of up to 50V, suitable for applications requiring higher voltage handling.​
• High Current Capacity: Supports collector currents (IC) up to 500mA per channel, enabling control of high-current loads.​
• Integrated Base Resistors: Each Darlington pair includes built-in base current limiting resistors, simplifying circuit design and reducing external component count.​
• Direct Drive Compatibility: Designed for direct interfacing with TTL and CMOS logic outputs, facilitating easy integration into digital control systems.​
• Integrated Flyback Diodes: Incorporates flyback diodes for inductive load protection, safeguarding the device and enhancing reliability.​
• Compact Package: Available in a 16-pin Dual In-line Package (DIP16), optimizing board space and simplifying PCB layout.​

Additional Specifications:

• Mounting Style: Through Hole (DIP-16 Package)
• Maximum DC Collector Current (Ic): 500 mA
• Collector-Emitter Voltage (VCEO) Max: 50 V
• Collector-Base Voltage (VCBO): 50 V
• Emitter-Base Voltage (VEBO): 10 V
• Power Dissipation: 1.47 W
• Operating Temprature: -20°C to +75°C