TOP233YN
700 V integrated offline flyback switcher for supplies up to the 50 W open-frame class
Key details
| Part Number | TOP233YN |
|---|---|
| Manufacturer | Power Integrations |
| Category | Offline AC-DC Converter |
| Lifecycle Status | Obsolete |
| Series | TOPSwitch-FX |
| Package / Case | 7-lead TO-220-7B |
| Pin Count | 7 |
| Operating Temperature | -40 C to +150 C junction |
| Last Verified | 2026-07-24 |
Part information
TOP233YN Overview
TOP233YN is a Power Integrations 700 V integrated offline flyback switcher for supplies up to the 50 W open-frame class supplied in 7-lead TO-220-7B. This page uses the exact orderable code because package, grade, temperature and option suffixes can change compatibility.
Key Technical Specifications
| Breakdown Voltage | 700 V |
|---|---|
| Open-Frame Power | 50 W at 230 VAC reference |
| Switching Frequency | 130 kHz or 65 kHz selectable |
| Maximum Duty Cycle | 78% class |
| Functions | Soft-start, UV, OV and adjustable current limit |
Package and Ordering Notes
The listed package is 7-lead TO-220-7B with 7 pins, leads, lands or contacts. The featured image is a generic package illustration for form-factor identification and is not an actual date-code or lot photograph. Lifecycle is recorded as Obsolete; confirm current factory support and last-time-buy constraints before design-in.
Sourcing Guidance
TOP233YN is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.
For an accurate quotation, include the full MPN, target quantity, acceptable date-code range, packaging format and destination. Icearth can help review traceability documents, label photos and electrical/package alignment before order placement.
Manufacturer Documentation
Technical values were checked against Power Integrations documentation. Use the linked datasheet as the controlling source and re-check revisions before PCB release or firmware qualification.
TOP233YN FAQ
What is TOP233YN?
TOP233YN is a Power Integrations 700 V integrated offline flyback switcher for supplies up to the 50 W open-frame class. It belongs to the TOPSwitch-FX series.
What are the key specifications of TOP233YN?
Breakdown Voltage is 700 V, and Open-Frame Power is 50 W at 230 VAC reference. Refer to the manufacturer datasheet for limits, test conditions and revision-controlled values.
What package does TOP233YN use?
TOP233YN is supplied in 7-lead TO-220-7B with 7 pins, leads, balls or contacts. Verify the exact footprint and ordering suffix before PCB release.
Is TOP233YN still in production?
TOP233YN is obsolete or discontinued. Remaining stock should be checked for traceability, date code, package marking and storage history.
What should be checked before sourcing TOP233YN?
Confirm the complete MPN, electrical ratings, package, temperature grade, packing format and required quantity. Do not treat a similar family code as a drop-in replacement without checking the datasheet.
Related part numbers
These published records are the closest catalog references to TOP233YN by manufacturer, product category, series or package. Confirm electrical ratings, pinout and ordering suffixes before substitution.
- STR-W6052S — 650 V PWM offline switching regulator with integrated power MOSFET and low standby power Related by the same component category.
- STR-W6053S — 650 V PWM offline switching regulator with integrated power MOSFET for higher-power flyback supplies Related by the same component category.
Lifecycle and sourcing review
This part has a legacy lifecycle status. Submit the exact MPN, quantity, delivery destination and date-code requirements for a sourcing review.
TOP233YN is obsolete or discontinued. Require traceability, date-code, package-marking and storage-condition checks for remaining stock.