| Parameters | 
                                                                                                            
                                            | RoHS Status | Non-RoHS Compliant | 
                                                                            
                                            | Lead Free | Contains Lead | 
                                                                            
                                            | Mounting Type | Surface Mount | 
                                                                            
                                            | Package / Case | TO-261-4, TO-261AA | 
                                                                            
                                            | Surface Mount | YES | 
                                                                            
                                            | Number of Pins | 4 | 
                                                                            
                                            | Operating Temperature | -40°C~150°C TJ | 
                                                                            
                                            | Packaging | Tape & Reel (TR) | 
                                                                            
                                            | Published | 2007 | 
                                                                            
                                            | JESD-609 Code | e0 | 
                                                                            
                                            | Part Status | Obsolete | 
                                                                            
                                            | Moisture Sensitivity Level (MSL) | 1  (Unlimited) | 
                                                                            
                                            | Number of Terminations | 4 | 
                                                                            
                                            | ECCN Code | EAR99 | 
                                                                            
                                            | Terminal Finish | Tin/Lead (Sn/Pb) | 
                                                                            
                                            | Subcategory | Switching Regulator or Controllers | 
                                                                            
                                            | Max Power Dissipation | 19W | 
                                                                            
                                            | Terminal Position | SINGLE | 
                                                                            
                                            | Terminal Form | GULL WING | 
                                                                            
                                            | Peak Reflow Temperature (Cel) | 240 | 
                                                                            
                                            | Number of Functions | 1 | 
                                                                            
                                            | Terminal Pitch | 2.3mm | 
                                                                            
                                            | Reach Compliance Code | not_compliant | 
                                                                            
                                            | Time@Peak Reflow Temperature-Max (s) | 30 | 
                                                                            
                                            | Base Part Number | NCP1012 | 
                                                                            
                                            | Pin Count | 4 | 
                                                                            
                                            | Qualification Status | Not Qualified | 
                                                                            
                                            | Operating Supply Voltage | 10V | 
                                                                            
                                            | Input Voltage-Nom | 8V | 
                                                                            
                                            | Analog IC - Other Type | SWITCHING REGULATOR | 
                                                                            
                                            | Voltage - Supply (Vcc/Vdd) | 8.5V~10V | 
                                                                            
                                            | Topology | Flyback | 
                                                                            
                                            | Control Mode | CURRENT-MODE | 
                                                                            
                                            | Output Current-Max | 1A | 
                                                                            
                                            | Frequency - Switching | 100kHz | 
                                                                            
                                            | Control Technique | PULSE WIDTH MODULATION | 
                                                                            
                                            | Switcher Configuration | SINGLE | 
                                                                            
                                            | Internal Switch(s) | Yes | 
                                                                            
                                            | Fault Protection | Over Load, Over Temperature, Over Voltage | 
                                                                            
                                            | Max Duty Cycle | 72 % | 
                                                                            
                                            | Duty Cycle | 67% | 
                                                                            
                                            | Output Isolation | Isolated | 
                                                                            
                                            | Voltage - Breakdown | 700V | 
                                                                            
                                            | Height Seated (Max) | 1.75mm | 
                                                                            
                                            | Length | 6.5mm | 
                                                                            
                                            | Width | 3.5mm | 
                                                                                                    
                            
                         
                                                NCP1012ST100T3 Overview
A ac to dc converter of the package TO-261-4, TO-261AA contains the ac to dc converter.The AC/DC power converter type is Tape & Reel (TR) .A AC/DC converter of this type is mounted in the way of Surface Mount .The ac dc converter should be operated at a temperature of -40°C~150°C TJ °C to deliver its optimal performance.A SWITCHING REGULATOR analog integrated circuit is used in this AC DC converter.When the switching frequency reaches 100kHz , the process is complete.This AC/DC converter is suitable for operation in the range of 8.5V~10V  supply voltage (Vcc/Vdd).There are a total of 4  terminations.The ac/dc converter has 4 pins.Up to 4 pins are present on the ac-dc converter.The NCP1012 family can be used to search for similar acdc converters.Switching Regulator or Controllers contains the ac to dc conversions.Ac to dc inverters can be supplied with a maximum current of 1A .When the supply voltage is 10V , the interface IC conducts.
NCP1012ST100T3 Features
Packaged with TO-261-4, TO-261AA
Switching Frequency at 100kHz
With 4 pins
Operating Supply Voltage at the range of 10V
NCP1012ST100T3 Applications
There are a lot of ON Semiconductor NCP1012ST100T3 AC DC Converters applications. 
- Laptops
- RCC SMPS
- Chargers for cell/cordless phones
- Replacements for bulky plug-in transformers
- Switching AC-DC Charger
- Adaptors for Portable Media Player
- Power tools
- Standby power supplies for VCR
- AC/DC LED Driver applications
- Power Adaptors