LS310 SOIC 8L

Overview

The LS310 is a monolithic dual NPN transistor manufactured by Linear Integrated Systems, Inc., housed in an 8-lead SOIC package. It features high current gain with hFE ≥ 150 at currents between 10µA and 1mA. The device exhibits tight base-emitter voltage matching, typically |VBE1 – VBE2| = 0.2mV, and a transition frequency (ft) of 250MHz typical at 1mA. This design reduces parasitics for improved performance.

Feature Summary

• Monolithic dual NPN transistor configuration
• High current gain characteristics
• Tight base-emitter voltage matching
• Low output capacitance

Applications

• Precision analog signal processing
• Differential amplifier stages
• Current mirror circuits
• High-frequency amplification

Procurement Notes

Verify the manufacturer designation as Linear Integrated Systems or Micross Components, as datasheets may vary. Confirm the specific package type is the 8-lead SOIC variant, distinct from SOT-23 or TO-78 versions. Ensure the component meets required gain and matching specifications for the intended circuit application before procurement.

Selection Notes

Select this component when tight matching between two NPN transistors is critical for circuit accuracy. The monolithic construction ensures better thermal tracking and reduced parasitic effects compared to discrete pairs. Consider the high gain and frequency response requirements of the application to ensure compatibility with the specified electrical parameters.

Part Context

This component belongs to a family of monolithic dual NPN transistors designed for applications requiring matched transistor pairs. Similar variants include LS310 in SOT-23 and LS311 series devices. These components are engineered to provide superior performance over discrete matched pairs by minimizing internal parasitics through integrated chip design.

Replacement Considerations

Direct substitutes include other monolithic dual NPN transistors with similar gain and matching specifications. Verify pinout compatibility and package dimensions when considering alternatives from different manufacturers.