Broadcom SS04-0B00-00: Datasheet, Features, and Application Notes
The Broadcom SS04-0B00-00 is a highly integrated optocoupler, specifically a phototransistor output optical coupler, designed to provide reliable electrical isolation in a wide range of electronic applications. This component is essential for systems requiring noise immunity, safety isolation, and voltage level shifting.
Datasheet Overview
The datasheet for the SS04-0B00-00 outlines its critical electrical and operational characteristics. Key specifications include a collector-emitter voltage (VCEO) of 80V and a current transfer ratio (CTR) ranging from 50% to 600% at an input current (IF) of 5mA, making it highly efficient. It features an isolation voltage of 5,000 VRMS for one minute, ensuring robust protection between input and output circuits. The device is packaged in a compact 4-pin DIP (Dual In-line Package), which is suitable for through-hole mounting on printed circuit boards (PCBs).
Key Features
High Isolation Voltage: The 5kVRMS isolation barrier is a standout feature, providing superior protection against high-voltage transients and meeting stringent international safety standards.
Wide CTR Range: The broad CTR range offers design flexibility, allowing for efficient operation even with lower input drive currents.
Compact DIP Package: The industry-standard 4-pin DIP ensures both ease of handling during assembly and compatibility with existing PCB layouts.
Reliable Performance: It operates effectively over an extended industrial temperature range from -55°C to +110°C, guaranteeing stability in harsh environments.
Fast Switching Speed: With a typical rise and fall time in the microsecond range, it is capable of handling moderate-speed data transmission and switching applications.
Application Notes
The SS04-0B00-00 is predominantly used for signal isolation in microcontroller interfaces, preventing ground loops and noise from disrupting sensitive logic circuits. It is also ideal for:
Switching power supply (SMPS) feedback circuits, where it provides voltage feedback from the secondary side to the primary side controller while maintaining critical isolation.
Industrial control systems and Programmable Logic Controller (PLC) I/O modules to isolate digital signals from noisy factory floor equipment.
Telecommunications equipment for isolating data lines and protecting interface circuits.
Replacing electromechanical relays in solid-state applications for quieter, faster, and more reliable switching.
When designing with this optocoupler, it is crucial to select an appropriate current-limiting resistor for the input LED to achieve the desired CTR and ensure long-term reliability. Furthermore, a pull-up resistor on the phototransistor output is necessary for digital switching applications.
ICGOOODFIND
The Broadcom SS04-0B00-00 stands as a proven and versatile solution for electrical isolation. Its combination of a high isolation rating, wide operating temperature, and excellent CTR makes it a go-to component for engineers designing robust power supplies, industrial controls, and communication systems that demand reliability and safety.
Keywords: Optocoupler, Electrical Isolation, Current Transfer Ratio (CTR), Phototransistor, Switching Power Supply (SMPS)
