Description
The STK730-020 is an original Sanyo-manufactured thick-film hybrid integrated circuit. This switching regulator is specifically designed for use in Switch Mode Power Supplies (SMPS) for televisions, arcade monitors, and industrial video displays.
Key Features:
- Integrated Power MOSFET: Combines high-voltage switching transistors and control logic in a single, thermally efficient module.
- Stable Voltage Regulation: Engineered to maintain a precise B+ output voltage, ensuring consistent display geometry and brightness for CRT units.
- Robust Thermal Design: Built using Sanyo’s Insulated Metal Substrate (IMS), allowing the chip to withstand high electrical and thermal stress during operation.
- Simplified Repair: Replaces multiple discrete components, making it the standard solution for fixing "dead" or "ticking" power supply units.
Specifications & Compatibility:
- Manufacturer: Sanyo
- Function: Power Supply Regulator / SMPS Control
- Package Type: Multi-Pin Hybrid (Heatsink mountable)
- Common Applications: 20" to 29" CRT Televisions, Arcade Game Monitors (Wells-Gardner, Neotec), and legacy industrial monitors.
Technician’s Note: Failure of the STK730-020 often presents as a blown main fuse or a rhythmic "chirping" sound from the power transformer. Before installation, always check the associated zener diodes and primary electrolytic capacitors for leakage. Apply a fresh, even layer of thermal grease to the backplate for optimal cooling.