HFA3128BZ96

Overview

The HFA3128BZ96 is an ultra-high frequency transistor array manufactured by Renesas Electronics Corporation. It comprises five dielectrically isolated PNP transistors on a common monolithic substrate, fabricated using the complementary bipolar UHF-1 process. The device operates with a transition frequency (fT) of 5.5 GHz and exhibits a typical noise figure of 3.5 dB at 1.0 GHz. Key electrical limits include a maximum collector-emitter voltage (VCEO) of 8 V, an emitter-base voltage (VEBO) of 5.5 V, and a continuous collector current of 65 mA. The minimum DC current gain (hFE) is specified as 20. Power dissipation is rated at 150 mW, and the unit functions within a temperature range of -55°C to +125°C. It is housed in a 16-lead QFN EP package.

Feature Summary

• Monolithic construction provides close electrical and thermal matching among the five internal transistors.
• Dielectric isolation ensures complete separation between individual transistor terminals for application flexibility.
• Low noise characteristics make the array suitable for high-frequency signal processing tasks.

Applications

• VHF/UHF amplifiers
• VHF/UHF mixers
• IF converters
• Synchronous detectors

Procurement Notes

Verify component authenticity through authorized channels due to end-of-life status. Confirm RoHS compliance details, as lead-free variants with anneal are available. Check moisture sensitivity level requirements before assembly. Ensure storage conditions meet specifications to prevent degradation. Validate pin compatibility with existing PCB footprints prior to integration.

Selection Notes

Select this component when designing circuits requiring matched PNP arrays for frequencies up to 5.5 GHz. Consider the 16-lead QFN package constraints for thermal management. Evaluate the 150 mW power dissipation limit against expected operating currents. Compare noise performance against alternative NPN arrays if polarity requirements differ. Verify that the 8 V voltage rating aligns with circuit supply levels.

Part Context

The HFA3128 series belongs to a family of ultra-high frequency transistor arrays including the HFA3046, HFA3096, and HFA3127. While the HFA3046 and HFA3127 utilize NPN transistors, the HFA3128 specifically employs PNP technology. This complementarity allows designers to construct balanced differential stages or push-pull configurations within single packages. The series shares similar fabrication processes and packaging options across its variants.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Designers should consult manufacturer obsolescence notices for potential alternatives. Pin-compatible industry standard 3XXX series arrays are referenced as comparable form factors. Verify functional equivalence before substituting any other RF transistor arrays.