HFA3127BZ

Overview

The HFA3127BZ is an ultra-high frequency NPN bipolar transistor array fabricated using the Renesas complementary bipolar UHF-1 process. It integrates five dielectrically isolated transistors on a common monolithic substrate, providing close electrical and thermal matching. The device operates at a transition frequency (fT) of 8 GHz with a minimum DC current gain (hFE) of 40. Key electrical limits include a collector-emitter voltage (VCEO) of 8 V, an emitter-base voltage (VEBO) of 5.5 V, and a continuous collector current of 65 mA. Power dissipation is rated at 150 mW, and it functions within a temperature range of -55°C to +125°C.

Feature Summary

• Monolithic construction ensures tight electrical and thermal matching among the five integrated NPN transistors.
• Dielectric isolation between transistors prevents latch-up and improves high-frequency performance stability.
• Individual terminal access allows for maximum application flexibility in circuit design.

Applications

• High-frequency RF amplifier stages
• Mixer circuits requiring low noise characteristics
• Harsh environment applications meeting MIL-STD-883 standards

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance details as specific suffixes may vary. Check moisture sensitivity level (MSL 3) requirements for storage and handling. Validate package dimensions against PCB footprint specifications before integration.

Selection Notes

Select this component when five matched NPN transistors are required for UHF applications. Ensure the 8 GHz fT meets system bandwidth needs. Consider the 150 mW power dissipation limit for thermal management. Compare against HFA3046BZ if different pinout or voltage ratings are acceptable.

Part Context

Part of the HFA3046/HFA3096/HFA3127/HFA3128 family of ultra-high frequency transistor arrays. Shares the same UHF-1 process technology. Differs from HFA3127RZ primarily by package type (SOIC-Narrow-16 vs QFN). All members offer five isolated transistors for flexible RF design.

Replacement Considerations

HFA3127RZ offers identical electrical performance but uses a 16-QFN (3x3 mm) package instead of SOIC-Narrow-16. Verify footprint compatibility before substitution. No other direct functional replacements are documented in public sources.