SSM2220SZ

Overview

The SSM2220SZ is a dual matched PNP transistor in an 8-lead SOIC package. It features a maximum collector current of 20 mA and breakdown voltages of 36 V for both collector-emitter and collector-base configurations. The device exhibits a typical gain bandwidth product of 190 MHz and a current gain (hFE) of 165 at IC = 1 mA. Noise voltage density is typically 0.7 nV/√Hz at 100 Hz, with a maximum offset voltage of 200 μV. Bulk resistance is typically 0.3 Ω. Operating temperature range spans from -40°C to +85°C.

Feature Summary

• Ultralow input voltage noise optimized for audio applications
• Tight current gain matching to reduce harmonic distortion
• Internal base-to-emitter protection diodes prevent reverse breakdown degradation

Applications

• Microphone preamplifiers
• Tape head preamplifiers
• Low noise precision instrumentation
• Current sources and mirrors

Procurement Notes

Verify the specific suffix 'SZ' indicates RoHS compliance when sourcing. Confirm the package type matches the required PCB footprint. Ensure the operating environment stays within the specified industrial temperature limits. Check for availability of reel packaging options if automated assembly is planned.

Selection Notes

Select this component for circuits requiring low noise and high gain matching. Consider the SOIC package dimensions for board space constraints. Evaluate thermal resistance values for heat dissipation requirements. Compare noise specifications against other audio transistors for optimal signal integrity.

Part Context

This part belongs to the SSM2220 family of dual matched PNP transistors. Variants include PDIP and SOIC packages. The 'Z' suffix denotes RoHS compliance. All variants share identical electrical characteristics and pinouts.

Replacement Considerations

SSM2220S and SSM2220PZ are direct functional equivalents. Verify package compatibility before substitution.