Description
The STR-S5703 is an original Sanken hybrid integrated circuit engineered specifically to meet the strict demands of off-line quasi-resonant flyback power converters utilizing indirect feedback. This device cleanly incorporates an advanced primary control and proportional drive circuit paired with a third-generation high-voltage bipolar switching transistor.
Key Features:
- Manufacturer: Sanken Electric Co., Ltd. (Originally distributed via Allegro MicroSystems)
- Package Type: Over-molded SIP-9 (9-pin Single In-line Power Package) with an integrated, isolated internal heat spreader.
- Topology: Quasi-Resonant Flyback (Delivers exceptional efficiency, low-power standby mode, and minimized electromagnetic interference/EMI).
- Maximum Output Power: Rated for power supply outputs up to 140W (Typically operating on 110V/120V primary source lines).
- Absolute Max Ratings: Output voltage (VCEX) of 500V and continuous output switching current (IC) of 6.0A.
- Built-In Safeguards: Fully equipped with cycle-by-cycle over-current limiting, latched over-voltage protection, internal under-voltage lockout (UVLO) with hysteresis, and thermal shutdown safety controls.
- Condition: Brand New / New Old Stock (NOS)
An essential, legacy component relied upon heavily by vintage repair benches for servicing retro TV sets, older CRT monitor power strips, and classic arcade chassis looking for an exact-match semiconductor replacement module.