Description
The STR-30123 is an original Sanken thick-film hybrid integrated circuit designed specifically as a fixed voltage regulator for line-operated color television chassis, arcade gaming monitor power supplies, and classic CRT display units. Part of Sanken's classic STR30000 series, this power management device integrates a high-performance triple-diffused planar Darlington power switching transistor alongside its dedicated reference voltage and drive circuitry inside a single robust module.
Key Features:
- Manufacturer: Sanken Electric Co., Ltd. (Cross-referenced to standard legacy replacement lines like ECG/NTE series).
- Package Type: 5-Pin Single In-line Power Package (SIP-5 / ZIP-5 / TO-3P modification) featuring an integrated metal cooling fin with a single pre-drilled mounting hole for secure heat sinking.
- Pin Configuration: 5-Pin Layout (Pin 1: Common/Ground, Pin 2: Base, Pin 3: Input/Collector, Pin 4: Output/Emitter, Pin 5: Output Adjustment/Blank).
- Electrical Specifications: Delivers a highly stable, fixed output target of 123V (±0.8V) under a 200V maximum peak input voltage ceiling, rated for up to 1.0A of continuous output current and 27W of maximum power dissipation.
- Condition: Brand New / New Old Stock (NOS)
This critical replacement component is highly sought after by retro arcade technicians and CRT repair professionals. It is famously utilized as a core power regulator (at location IC4) on vintage Wells Gardner 19" (and smaller) K7000 monitor chassis, and acts as a direct replacement for the 223-18-01 regulator found on Zenith K7000A chassis.

