Infineon Solid State Isolator technology has taken a major leap forward, setting a new benchmark for high-volume industrial applications. On July 28, 2026, Infineon Technologies AG officially announced the expansion of its portfolio with the compact ISSI20BxxF family. This strategic release brings advanced solid-state isolation technology directly into markets traditionally dominated by photovoltaic isolators (PVIs), photovoltaic relays (PVRs), and electromechanical relays (EMRs). For engineers and designers working on space-constrained projects, this development offers a seamless, direct upgrade path.
Hosted in a highly compact PG-DSO-8 150 mil package, the new footprint closely mirrors existing PVI solutions. However, it delivers significantly higher drive capability, robust integrated protection features, and unprecedented flexibility in power-switch selection. As industrial automation continues to evolve, components like these are becoming the backbone of reliable, next-generation electronic design.
What is the New Infineon Solid State Isolator Family?
The ISSI20BxxF series represents a paradigm shift in how isolation barriers are managed in electronic circuits. Historically, designers had to compromise between footprint size, drive capability, and system robustness. This new family eliminates those compromises. By maintaining a footprint comparable to legacy solutions, it allows manufacturers to modernize their designs without redesigning their entire printed circuit board (PCB) layout.
This seamless transition is particularly valuable for high-volume manufacturing, where even minor improvements in reliability and component count can translate to massive cost savings and enhanced product lifespans. The series is explicitly engineered to meet the rigorous demands of modern industrial environments, ensuring consistent performance under varying thermal and electrical loads.
Key Technological Advancements
Coreless-Transformer Technology
At the heart of the ISSI20BxxF family lies Infineon’s proprietary coreless-transformer technology. This innovative approach simultaneously transfers both signal and energy across the isolation barrier. Consequently, it can drive external power switches efficiently without requiring a dedicated isolated gate supply.
This is a game-changer for system designers. By removing the need for an auxiliary isolated power supply, the overall bill of materials (BOM) is reduced, and board space is conserved. Furthermore, this architecture delivers a substantially higher output-drive capability than conventional PVI-based solutions, ensuring compatibility with a broad spectrum of external power switches, including modern MOSFETs and IGBTs.
Integrated Protection Functions
Reliability is non-negotiable in industrial automation. The ISSI20BxxF family addresses this by embedding comprehensive protection mechanisms directly into the silicon. Key integrated features include:
- Over-current protection: Prevents damage during unexpected load spikes.
- Over-temperature protection: Safeguards the component in high-heat environments.
- Fast fault turn-off: Rapidly disconnects the circuit to prevent cascading failures.
- Latch-off capability: Ensures the system remains safely disabled until a manual reset or specific recovery sequence is initiated.
These built-in functions drastically reduce the need for bulky external protection circuitry. As a result, system robustness is improved, and design complexity is lowered. For applications with particularly demanding switching requirements, selected variants also support a dynamic Miller clamp and fast turn-on functionality, preventing false triggering and ensuring clean signal transitions.
Device Variants and Safety Certifications
The newly introduced family comprises three distinct devices, all housed in the space-saving PG-DSO-8 150 mil package:
- ISSI20B02F
- ISSI20B03F
- ISSI20B11F
Despite their compact size, all three devices deliver uncompromising safety standards. They provide 3 kVrms isolation and a 4 mm creepage distance. Furthermore, they are fully UL 1577 certified. These specifications make them perfectly suited for applications where basic isolation is mandated by applicable international safety standards. This new family elegantly complements Infineon’s previously introduced ISSI20RxxH and ISSI30RxxH families, effectively extending the Solid State Isolator portfolio to designs where a smaller physical footprint is an absolute necessity.
Target Applications for the ISSI20BxxF Series
The versatility of the Infineon Solid State Isolator ISSI20BxxF family makes it an ideal fit for a wide array of sectors. Primary target applications include:
- Solid-state relay modules: Providing silent, wear-free switching.
- PLC input/output systems: Ensuring reliable signal isolation in programmable logic controllers.
- Industrial automation: Supporting robust machinery and assembly line controls.
- Laboratory DC power supplies: Delivering precise, isolated control for sensitive testing equipment.
- Automated test equipment (ATE): Enhancing the longevity and accuracy of diagnostic tools.
- Low-voltage building automation: Facilitating smart building controls and energy management systems.
- Telecom infrastructure: Protecting sensitive communication hardware from voltage transients.
Superiority Over Electromechanical Relays
When compared to traditional electromechanical relays (EMRs), SSI-based solid-state relays offer undeniable advantages. EMRs are prone to mechanical wear, contact bounce, and electrical arcing over time. These physical limitations inherently restrict their operational lifespan, especially in high-cycle applications.
In contrast, the Infineon Solid State Isolator enables completely silent operation and a dramatically extended service life. By eliminating moving parts, the ISSI20BxxF family ensures consistent performance over millions of cycles. This reliability is increasingly valued in modern industrial settings, where unplanned downtime can result in significant financial losses.
Availability and Design Support
Engineers can begin integrating these components immediately. The ISSI20B02F, ISSI20B03F, and ISSI20B11F are available now for production. To accelerate the design process, Infineon provides a comprehensive suite of support resources. This includes evaluation hardware, detailed application notes, technical training materials, and dedicated design support.
For professionals seeking to implement these advanced solutions, staying updated through trusted technology hubs like aarokatech.com can provide additional insights, tutorials, and community discussions on optimizing these components for specific use cases. More detailed technical specifications can also be explored directly at Infineon’s official SSI portal.
Why This Matters for the Future of Automation
Infineon Technologies AG continues to solidify its position as a global semiconductor leader in power systems and the Internet of Things (IoT). With approximately 57,000 employees worldwide and a remarkable revenue of €14.7 billion in the 2025 fiscal year, the company is uniquely positioned to drive both decarbonization and digitalization.
The introduction of the ISSI20BxxF family is not just a product update; it is a strategic enabler for smarter, more efficient, and more sustainable industrial ecosystems. By replacing legacy isolation methods with advanced solid-state technology, manufacturers can build systems that are smaller, safer, and significantly more reliable.
Conclusion
The expansion of the Infineon Solid State Isolator portfolio with the ISSI20BxxF family marks a significant milestone for high-volume industrial automation. By combining a compact PG-DSO-8 footprint with coreless-transformer technology and robust integrated protection, Infineon has delivered a compelling alternative to outdated PVI and EMR solutions. As industries continue to demand higher efficiency and reliability, this new family of isolators will undoubtedly play a critical role in shaping the next generation of electronic design.
