IN Brief:
- izmo has moved an India-developed RF QFN package through assembly and electrical validation into production shipments.
- Approximately 0.3mm wire bonds, optimised trace geometry, and an air cavity are used to reduce package parasitics.
- Detailed S-parameters and qualification results remain undisclosed, so the announcement establishes a production milestone rather than full public RF characterisation.
izmo Microsystems has begun production shipments of a high-frequency QFN semiconductor package developed for devices operating at frequencies up to 40GHz, following assembly and electrical validation for a customer building RF modules for defence and secure communications.
The Bengaluru packaging company says the device was designed, developed, and manufactured in India and uses a proprietary internal architecture intended to limit the parasitic effects that become increasingly significant as conventional QFN formats move into microwave frequencies. The manufacturing process has now been established for scale-up, although the customer, production volume, package dimensions, and programme remain undisclosed.
izmo’s announcement identifies two principal design measures: optimised trace geometry and die positioning that produce wire-bond lengths of approximately 0.3mm, and a precision air cavity around the die. The company says that combination minimises parasitic effects and enables operation at frequencies up to 40GHz.
At those frequencies, the package is part of the RF circuit rather than merely a mechanical enclosure. Bond wires contribute inductance, lead-frame and substrate structures add capacitance, and every transition can affect impedance, insertion loss, return loss, and signal phase. Electrical features that are negligible at lower frequencies can therefore become significant elements of the signal path as frequency rises.
Shortening bond wires is one way of reducing their inductive contribution. An air cavity can also reduce the dielectric material immediately surrounding the die and interconnect compared with a fully moulded structure. The practical result still depends on the complete device, grounding, substrate, module layout, and operating environment, so the package cannot be evaluated independently from the RF design around it.
Public performance data remain limited. izmo has not published S-parameters, insertion-loss or return-loss plots, package dimensions, thermal resistance, power-handling figures, or detailed qualification results for the announced device. The 40GHz figure should therefore be treated as the company’s stated validated operating capability rather than a complete public RF characterisation.
The company’s wider RF packaging portfolio provides context for the approach. izmo offers open-cavity QFN packages for RF front-end devices, MMICs, power amplifiers, and low-noise amplifiers, using low-inductance ground paths, thermal vias, and precision wire bonding. It also supports moulded QFN, flip-chip BGA, RF modules, package co-design, assembly, testing, and qualification.
The new package is intended for a customer serving defence and secure wireless communications, with broader applications cited across radar, electronic warfare, aerospace, satellite communications, and other high-frequency systems. Those markets add environmental and supply requirements to the electrical design, particularly where vibration, thermal cycling, long service life, configuration control, or domestic sourcing form part of the programme specification.
Production shipments are the most material part of the announcement. The package has moved beyond a simulation or prototype claim into assembly and electrical validation for a customer application, and izmo says manufacturing processes are in place to increase output. That does not establish completion of every defence or aerospace qualification regime, and the company has not disclosed which standards apply to the programme.
The development also sits within India’s wider effort to expand domestic semiconductor assembly and advanced packaging capability. Packaging is sometimes treated as a downstream step after wafer fabrication, but RF devices make its electrical contribution impossible to ignore. The package has to control parasitics, provide an effective ground and thermal path, and remain manufacturable without eroding the performance achieved on the die.
That makes the distinction between a one-off customer design and a repeatable package platform important. A bespoke QFN can be engineered around one die and one module, while a reusable family has to accommodate different footprints and electrical requirements without repeating the entire design and validation cycle.
izmo has not yet disclosed whether the 40GHz architecture will become a standard package family. For now, the confirmed step is narrower: an India-developed RF package has passed assembly and electrical validation and entered production shipments for a high-frequency defence communications application. The next useful evidence will be manufacturing repeatability, qualification data, and RF performance across temperature and production lots.
