HFA3127R

Overview

The HFA3127R is an ultra-high frequency transistor array manufactured by Renesas Electronics (formerly Intersil). It comprises five dielectrically isolated NPN transistors on a common monolithic substrate, fabricated using the complementary bipolar UHF-1 process. The device features a transition frequency of 8 GHz and a maximum collector-emitter voltage of 12 V. Key electrical parameters include a minimum DC current gain of 40 at 10 mA and 2 V, a continuous collector current of 65 mA, and a power dissipation rating of 150 mW. It operates within a temperature range of -55°C to +125°C and is housed in a 16-VFQFN package with dimensions of 3x3 mm.

Feature Summary

• Provides complete isolation between individual transistors for enhanced signal integrity.
• Monolithic construction ensures close electrical and thermal matching among the five internal devices.
• Pin-compatible design facilitates integration into existing industry-standard circuit layouts.

Applications

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

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance details as sources indicate non-compliance. Check moisture sensitivity level requirements before handling. Validate pinout compatibility with target PCB footprint. Review datasheet revisions for any parameter updates prior to final design approval.

Selection Notes

Select this component for applications requiring matched RF performance at frequencies up to 8 GHz. Ensure the 12 V collector-emitter voltage rating meets circuit requirements. Consider the 16-QFN package constraints for thermal management. Verify that the 65 mA current limit supports the intended load conditions. Compare noise figure specifications against system sensitivity needs.

Part Context

The HFA3127R belongs to the HFA3127 series of ultra-high frequency transistor arrays. It shares the same core architecture and fabrication process as related models like the HFA3046 and HFA3128. While the HFA3046 offers similar NPN configurations in different packages, the HFA3127R specifically utilizes the 16-QFN form factor. This family is designed for high-frequency analog applications requiring precise transistor matching.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. The HFA3127R is listed as discontinued. Designers should consult manufacturer resources for potential obsolescence management strategies or equivalent product recommendations based on specific application requirements.