AT-30511-BLKG

Overview

The AT-30511-BLKG is a high-performance NPN silicon bipolar transistor designed for low current and low voltage operation. It utilizes the SOT-143 surface-mount package and features an optimized self-aligned-transistor process with nitride passivation. Key electrical specifications include a collector-emitter breakdown voltage (VCEO) of 5.5 V, an emitter-base breakdown voltage (VEBO) of 1.5 V, and a maximum continuous collector current of 8 mA. The device supports a power dissipation of 100 mW and operates within a junction temperature range of -65°C to +150°C.

Feature Summary

• Optimized for maximum transition frequency at low voltage operation
• Features five-emitter finger interdigitated geometry for high gain and fast response
• Utilizes gold metalization and ion-implantation techniques for reliability

Applications

• Low noise amplifiers in wireless systems
• Gain stages and buffers for battery-powered devices
• Oscillators and active mixers operating at 900 MHz, 1.8 GHz, or 2.4 GHz

Procurement Notes

Verify component authenticity by checking markings against official datasheet outlines. Confirm lead-free status via the 'G' suffix if required. Ensure storage conditions comply with humidity sensitivity guidelines. Validate that the SOT-143 package dimensions match design constraints before integration into production assemblies.

Selection Notes

Select this component when designing circuits requiring high performance at low bias currents. Compare the SOT-143 package against the SOT-23 variant based on thermal requirements and board space. Evaluate noise figure and associated gain characteristics at specific frequencies to ensure compatibility with system link budgets.

Part Context

This part belongs to the Agilent/Broadcom AT-305xx series of RF bipolar transistors. It shares the same semiconductor die as the AT-30533 but is housed in the SOT-143 package instead of the SOT-23. This packaging difference provides distinct pinout configurations suitable for different circuit layouts while maintaining identical core electrical performance metrics.

Replacement Considerations

The AT-30533 serves as a functional equivalent utilizing the same die technology. Substitution requires accounting for the physical package change from SOT-143 to SOT-23 and verifying pinout compatibility during PCB layout modifications.