Description
The STR-30125 is an original Sanken thick-film hybrid integrated circuit designed specifically as a fixed voltage regulator for line-operated color television chassis, classic monitor power supplies, and vintage electronics chassis. Part of Sanken's classic STR30000 series, this power management module integrates a high-performance triple-diffused planar Darlington power switching transistor alongside its dedicated reference voltage and drive circuitry inside a single robust block.
Key Features:
- Manufacturer: Sanken Electric Co., Ltd. (Cross-referenced to standard legacy replacement types like the ECG1897 / 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 pre-drilled single mounting hole for secure heat sink coupling.
- 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 125V (±0.8V) under a 200V maximum peak input voltage ceiling, rated for up to 1.0A of continuous output current.
- Condition: Brand New / New Old Stock (NOS)
Widely sought after by vintage display technicians, classic TV repair benches, and arcade restoration hobbyists looking for an exact-match original Sanken hybrid pack to rebuild aging primary power supplies and stabilize 125V power rails.

