2SD1851-TB-E-SY

Single Bipolar Transistors Overview

The 2SD1851-TB-E-SY is a PNP epitaxial planar silicon transistor manufactured by Sanyo. It features a CP surface-mount package with dimensions of 2.9 x 1.5 x 1.1 mm. The device supports a maximum DC collector current of 50 mA and a maximum collector-emitter voltage of -12 V. Additional electrical limits include a collector-base voltage of -15 V, an emitter-base voltage of -3 V, and a maximum power dissipation of 250 mW. The component operates at frequencies up to 750 MHz and has a maximum operating temperature of +150 °C.

Single Bipolar Transistors Feature Summary

• Epitaxial planar silicon construction for reliable switching performance
• High DC current gain characteristics suitable for amplifier applications
• Compact CP surface-mount package design

Single Bipolar Transistors Applications

• Audio frequency amplifier circuits
• Solenoid driver stages
• LED driver configurations

Single Bipolar Transistors Procurement Notes

Verify the specific datasheet version provided by the manufacturer or authorized distributor to confirm exact electrical parameters and mechanical drawings. Ensure that the CP package footprint matches the target PCB layout requirements. Cross-reference the part number suffixes to confirm compatibility with existing assembly processes and quality standards before finalizing procurement orders.

Single Bipolar Transistors Selection Notes

Select this component for low-power switching and amplification tasks requiring a small form factor. The -12 V collector-emitter rating limits its use in low-voltage circuits. Consider the 50 mA current limit when designing load paths. The high-frequency capability supports audio range operations but may require careful layout for RF interference management in sensitive analog sections.

Single Bipolar Transistors Part Context

This component belongs to the Sanyo single bipolar transistor family, specifically utilizing PNP polarity. It is distinct from NPN variants within the same series designation. The TB-E-SY suffix indicates specific packaging and tape-and-reel configuration details defined by the manufacturer for automated assembly integration.

Single Bipolar Transistors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify pinout compatibility and electrical ratings against alternative PNP transistors in the CP package if sourcing this specific part is not feasible.