STMicroelectronics STPS20200CG-TR

Summary of the STPS20200CG-TR Schottky barrier diode

The STPS20200CG-TR, manufactured by STMicroelectronics, is a dual common-cathode Schottky barrier rectifier designed to address stringent performance requirements in power management and rectification. Configured as a diode array in a compact D²PAK (TO-263-3) surface-mount package, it offers a maximum repetitive peak reverse voltage (VRRM) of 200 V and an average forward output current of 10 A. The product is especially suited for secondary rectification in switched-mode power supplies (SMPS) and high-frequency DC-DC converters, as well as for power management in LED lighting.

The STPS20200CG-TR features two Schottky diodes sharing a common cathode, enabling flexible deployment in center-tap transformer topologies or single-phase rectification scenarios. The advanced planar process and component design facilitate high efficiency, low losses, and robust operation within a broad range of industrial and consumer applications.

Main functions and benefits of the STPS20200CG-TR

Engineers evaluating the STPS20200CG-TR will note several core advantages:

Low forward voltage drop: The device is engineered for a minimal forward voltage drop, thereby reducing conduction losses and improving overall efficiency within the power train.

Negligible switching losses: Schottky technology ensures extremely fast recovery and turn-off times, virtually eliminating the energy lost during diode switching events. This is especially advantageous in high-frequency power circuits.

Low thermal resistance: The D²PAK package, combined with optimized internal chip architecture, provides superior thermal conductivity, supporting robust operation under high-load conditions.

Wide operating temperature range: With a minimum operating junction temperature of -40°C, the device is well-suited for industrial and rugged environments.

Multiple package options: In addition to the D²PAK version (STPS20200CG-TR), related variants are available in TO-220AB, TO-220AB narrow-lead, and TO-220FPAB packages for both insulated and non-insulated mounting requirements. The TO-220FPAB package adds electrical insulation and is rated for a 2000 V DC isolating voltage.

Furthermore, the STPS20200CG-TR is compliant with ECOPACK®2 environmental specifications, ensuring that it meets modern lead-free and sustainability directives.

Electrical parameters and operational capabilities of the STPS20200CG-TR

The electrical characteristics of the STPS20200CG-TR drive its suitability for demanding power supply designs. Key parameters include:

Maximum repetitive peak reverse voltage (VRRM): 200 V

Average forward current (per device): 10 A

Low forward voltage drop (V_F): This significantly reduces power loss during conduction.

Reverse leakage current (I_R): The device maintains low leakage even at elevated reverse voltages, minimizing parasitic losses.

High surge current capability: Allows the diode to handle inrush or fault conditions without reliability concerns.

Designers must also account for device-specific equations for conduction and reverse losses; for precise thermal and power loss calculations, application notes such as STMicroelectronics' AN604 and AN4021 provide further guidance.

The combination of low static and dynamic losses, together with high-frequency capability and stable behavior under pulsed loads, makes the STPS20200CG-TR highly attractive for efficiency-sensitive designs.

Heat dissipation and dependability factors for the STPS20200CG-TR

Effective thermal management is a critical aspect of high-current diode selection. The STPS20200CG-TR is optimized for low junction-to-case and junction-to-ambient thermal resistance, facilitating robust heat removal via PCB copper or external heat sinks. The D²PAK’s large tab enables efficient conduction-based thermal paths.

Engineering scenarios involving prolonged high-current conduction or repetitive pulsed loads should consider the following:

Relative variation in thermal impedance based on pulse duration

Impact of PCB copper area under the package tab on overall thermal performance

Importance of mounting torque (typical recommended torque: 0.4 to 0.6 N·m in through-hole packages)

Proper application of these practices ensures the device operates well below thermal runaway thresholds, underlining the importance of adhering to the specified derating curves as found in the product documentation.

Packaging specifications and installation options for the STPS20200CG-TR series

The STPS20200CG-TR is assembled in a surface-mount D²PAK (TO-263-3) package. Major benefits of this package include:

Compact footprint optimized for high-power density PCB layouts

Large tab for efficient thermal and electrical contact to the PCB

Mechanical robustness for automated pick-and-place processes

Package meets UL94 V-0 flammability and is fully lead-free

Mechanical drawings with detailed dimensions are available, ensuring straightforward PCB footprint design and integration into existing layouts. For applications requiring insulation or alternative mounting styles, engineers can reference the TO-220FPAB or TO-220AB versions of the STPS20200C family.

Common uses and practical scenarios for the STPS20200CG-TR

The STPS20200CG-TR’s performance attributes make it suitable for various engineering scenarios, including:

Secondary-side rectification in switched-mode power supplies. The low forward drop and fast switching help maximize output efficiency in both continuous and discontinuous operating modes.

High-frequency DC-DC converters, where minimal switching loss is essential to meet stringent efficiency targets.

LED lighting drivers, which demand low-thermal-loss rectification for both reliability and power savings.

Industrial or communications equipment requiring robust dual-diode configurations with high surge and reverse voltage tolerance.

Engineers can deploy the STPS20200CG-TR in center-tap or single-phase rectifier configurations, leveraging its dual common-cathode structure for maximum electrical design flexibility.

Alternative or substitute models for the STPS20200CG-TR

When considering design alternatives or ensuring supply continuity, it is important for engineers and procurement teams to assess potential equivalents for the STPS20200CG-TR. Within the STPS20200C series, related devices offer similar electrical characteristics in different packages; for instance:

STPS20200C (TO-220AB standard and narrow-leads): For through-hole or higher power dissipation requirements

STPS20200CFP (TO-220FPAB): For applications needing electrical isolation from the heatsink, thanks to the fully insulated package

Selection between these variants depends primarily on the mechanical and thermal requirements of the end system, as all share the fundamental electrical advantages of the core device. Specifying these family-compatible models enables supply resilience and layout flexibility.

Conclusion

The STPS20200CG-TR from STMicroelectronics stands out as a robust, high-performance Schottky barrier rectifier solution for engineers and procurement professionals focused on power electronics design. Its blend of low forward voltage drop, minimal switching losses, and efficient surface-mount packaging ensures suitability for diverse high-reliability applications in power conversion and rectification. Clear understanding of its characteristics, package options, and alternative models supports optimal decision making in both new designs and ongoing component sourcing efforts.