LM3046MX

Overview

The LM3046MX is a monolithic NPN transistor array manufactured by Texas Instruments, housed in a 14-pin SOIC surface-mount package. It integrates five independent NPN transistors designed for VHF band applications. Key electrical specifications include a collector-emitter breakdown voltage of 15 V and a maximum collector current of 50 mA per channel. The device operates within a temperature range of -40 °C to 85 °C and features a power dissipation rating of 750 mW. It exhibits a transition frequency of 120 MHz and a minimum DC current gain (hFE) of 40 at 1 mA and 3 V.

Feature Summary

• Integrates five discrete NPN transistors into a single compact semiconductor structure
• Optimized for very high frequency (VHF) signal processing applications
• Provides low noise performance characteristics suitable for sensitive RF circuits

Applications

• VHF amplifier stages requiring multiple matched transistor elements
• RF mixer circuits utilizing integrated transistor arrays
• High-frequency oscillator designs needing stable biasing components

Procurement Notes

Verify the specific ordering suffix against official Texas Instruments documentation to confirm lead-free compliance and package variant accuracy. Ensure the procurement source provides valid traceability data matching the manufacturer's part identification standards. Cross-reference the component marking with the datasheet pinout configuration before integration into production assemblies.

Selection Notes

Select this component when a design requires multiple matched NPN transistors in a small surface-mount footprint. Consider the 15 V collector-emitter voltage limit and 50 mA current capability during circuit planning. Evaluate the thermal constraints relative to the 750 mW power dissipation rating and the SOIC-14 package thermal resistance for the intended operating environment.

Part Context

This component belongs to the LM3046 family of transistor arrays produced by Texas Instruments. It serves as a direct replacement for legacy National Semiconductor versions of the same part number. The device shares functional similarities with other complex transistor arrays but is distinct from power management ICs such as the LM5046 series.

Replacement Considerations

Publicly confirmed substitute part numbers include LM3046M/NOPB and LM3046MX/NOPB. Verify pin compatibility and electrical parameter tolerances before substituting any alternative manufacturers' devices.