onsemi NCP1055ST100T3 AC DC Converters, Offline Switchers
IC OFFLINE SWITCH FLYBACK SOT223

Same model may have multiple batches, images only for reference.
Manufacturer
Part Number (MPN)
NCP1055ST100T3
Detailed Description
IC OFFLINE SWITCH FLYBACK SOT223
Package
TO-261-4, TO-261AA
Key Features
Package / Case: TO-261-4, TO-261AA; Mounting Type: Surface Mount
Lifecycle Status
Obsolete
RoHS State
RoHS Compliant
Datasheet
NCP1055ST100T3 Datasheet
Quick Jump:
Technical Specifications
onsemi NCP1055ST100T3 AC DC Converters, Offline Switchers technical specifications.
General
Package / Case
TO-261-4, TO-261AA
Mounting Type
Surface Mount
Operating Temperature
-40°C ~ 150°C (TJ)
Supply Voltage
7.5V ~ 10V
Voltage Breakdown
700V
Power Watts
40 W
Internal Switch S
Yes
Switching Frequency
100kHz
Output Isolation
Isolated
Topology
Flyback
Alternate Parts Comparison (NCP1055ST100T3 vs NCP1011ST130T3 vs NCP1013ST65T3G vs NCP1012ST130T3)
Side-by-side technical parameter comparison of related primary models in this product family.
| This Part | Alternate Parts | Alternate Parts | Alternate Parts | |
|---|---|---|---|---|
| Package / Case | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA | TO-261-4, TO-261AA |
| Mounting Type | Surface Mount | Surface Mount | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) |
| Supply Voltage | 7.5V ~ 10V | 8.5V ~ 10V | 8.5V ~ 10V | 8.5V ~ 10V |
| Switching Frequency | 100kHz | 130kHz | 65kHz | 130kHz |
| Duty Cycle | 77% | 67% | 67% | 67% |
| Fault Protection | Current Limiting, Open Loop, Over Load, Over Temperature | Over Load, Over Temperature, Over | Over Load, Over Temperature, Over | Over Load, Over Temperature, Over |
| Internal Switch S | Yes | Yes | Yes | Yes |
| Output Isolation | Isolated | Isolated | Isolated | Isolated |
| Power Watts | 40 W | 19 W | 19 W | 19 W |
| Topology | Flyback | Flyback | Flyback | Flyback |
| Voltage Breakdown | 700V | 700V | 700V | 700V |
| Action |
More Parts in AC DC Converters and Offline Switchers
Browse additional parts from the same category, grouped by series, package type, and manufacturer. These are catalog suggestions — not verified pin-compatible alternates.