HFA3421IB

Product Overview

HFA3421IB is a Harris/Intersil RF or high-speed amplifier IC from Harris / Intersil. In an RF design it is normally used as a RF front-end, IF or high-speed analog gain stage, so the useful sourcing checks are not only the ordering code but also the operating band, gain behavior, output level, package footprint and bias conditions.

For this model, the key application data to verify are: exact operating band/bandwidth must be matched to the HFA/ISL base; gain/noise/linearity depends on exact base and application circuit; and analog/RF supply rails per datasheet. Because RF amplifier parts are layout- and matching-sensitive, HFA3421IB should be treated as an exact-BOM item unless the replacement has been validated with the same matching network, thermal design and control conditions.

Key Features

• Manufacturer: Harris / Intersil
• Part Number: HFA3421IB
• Device Type: Harris/Intersil RF or high-speed amplifier IC
• Signal-Chain Role: RF front-end, IF or high-speed analog gain stage
• Frequency / Band: exact operating band/bandwidth must be matched to the HFA/ISL base
• Gain / NF / Linearity: gain/noise/linearity depends on exact base and application circuit
• Output Power / Compression: small-signal or PA output level per device family
• Supply / Bias: analog/RF supply rails per datasheet
• RF Interface: RF/IF or high-speed analog signal pins
• Package / Mounting: surface-mount RF IC, MMIC, transistor or connectorized module depending on base number
• Design Note: verify S-parameters, matching network, thermal pad/flange and control pins before substituting this RF amplifier

Applications

• legacy WLAN front ends
• IF buffering
• communications boards
• industrial repair sourcing

Quality & Sourcing

Antrex Electronics can support sourcing for HFA3421IB and related RF amplifier BOM lines, including exact part-number matching, lot-label review, packaging inspection and third-party testing support when the project requires additional verification.