LS3550A SOT-23 6L

Overview

The LS3550A is a monolithic dual PNP transistor housed in a compact SOT-23 6L surface mount package. It features tight matching characteristics, including a base-to-emitter voltage differential of 2mV and excellent thermal tracking at 3µV/°C. The device supports a collector current of 50mA and withstands a collector-to-collector breakdown voltage of ±60V. With a DC current gain ranging from 150 to 100 at -1mA, it provides reliable performance for precision analog applications requiring matched transistor pairs.

Feature Summary

• Monolithic dual PNP transistor configuration
• Tight base-to-emitter voltage matching
• Excellent thermal tracking capability
• Compact SOT-23 6L surface mount packaging

Applications

• Precision analog signal processing circuits
• Instrumentation amplifier input stages
• Low-noise differential amplifiers
• Current mirror applications

Procurement Notes

Verify the specific suffix (LS3550A) against the datasheet to confirm the exact matching specifications required for your design. Ensure the ordering code matches the SOT-23 6L package variant. Confirm that the absolute maximum ratings, particularly the reverse base-to-emitter voltage limit of -6.0V, are respected in the circuit design to prevent device impairment.

Selection Notes

Select the LS3550A when precise matching between two PNP transistors is critical for circuit performance. The tight voltage differential and low thermal drift make it suitable for high-accuracy applications. Consider the SOT-23 6L package for space-constrained designs. Evaluate the DC current gain requirements against the specified ranges at different collector currents to ensure adequate amplification.

Part Context

The LS3550 series includes variants A, B, and C, differentiated primarily by their matching specifications. The LS3550A offers the tightest matching with a 2mV base-to-emitter voltage differential. Other series members provide looser tolerances. The series is available in multiple packages, including SOT-23, PDIP, SOIC, TO-78, and TO-71, allowing flexibility in board layout and thermal management strategies.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.