Pinout

STR-A6251 Datasheet – Flyback Switching Regulator

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Part Number: STR-A6251

Function: PWM-topology off-line secondary-feedback switching regulator IC

Package: DIP 8 Pin Type

Manufacturer: Allegro MicroSystems, Sanken

Images:

STR-A6251 datasheet

 

Description

The STR-A6251 and STR-A6252 are 50 kHz PWM topology (with ±5% frequency jittering for minimum EMI) regulators specifically designed to satisfy the requirements for increased integration and reliability in flyback converters. They incorporate a primary control and drive circuit with avalanche-rated power MOSFETs.

The STR-A6252 features higher allowable switching current and lower on-resistance.
The STRA6251 is also available for 67 kHz operation. Covering the power range from below 21 watts or 24 watts for a 230 VAC input, or to 15 or 20 watts for a universal (85 to 264 VAC) input, these devices can be used in a wide range of applications, from DVD players and VCR player/recorders to ac adapters for cellular phones and digital cameras. An auto-burst standby function reduces power consumption at light load, while multiple protections, including the avalanche-energy guaranteed MOSFET, provide high reliability of system design.

Pinouts

STR-A6251 pinout

 

 

Features

1. Start-up circuit

Thanks to the proprietary 900V BCD process, the built-in startup circuit connected to the internal MOSFET drain reduces both the discrete component count and the power consumption.

2. PWM operational frequency jittering

The frequency jittering function suppresses EMI noise and consequently reduces the EMI noise filter cost The center frequency of PWM operation is set to 50 KHz, and the frequency jittering provides variation of Δf= 5KHz (typ), which is adjustable by the external capacitor.

3. Over Load Protection (OLP) with a built-in timer (Auto restart)

Built-in delay timer circuit to trip the overload protection requires no external OLP capacitor, which allows cost reduction and space-saving.

Preview

STR-A6251 pinout datasheet

 

Applications

1.Standby power supply

2.Battery charger

3.Small power S.M.P.S

STR-A6251 Datasheet PDF

STR-A6251 pdf

TT2206 Replacement / Sanyo 1600V Transistor

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The TT2206 transistor is often used as a general-purpose power transistor, and a common equivalent is the 2SC5793.

Function: NPN Triple Diffused Planar Silicon Transistor

Package: TO-3P

Manufacturer: SANYO (Panasonic)

Image:

TT2206 Replacement

 

Description

This is NPN Transistor. TT2206 transistor is a type of bipolar junction transistor (BJT) made from silicon, a semiconductor material. This transistor is designed for amplifying or switching electronic signals in various electronic circuits.

 

Pinouts:
TT2206 Replacement

 

Features

0. I(c) :  10A,   V(cbo) :  1600V

1. High speed.

2. High breakdown voltage (Vcbo=1600V, Vceo=800V, Ic=10A, Pc=65W ).

3. High reliability (Adoption of HVP process).

4. Adoption of MBIT process.

 

Applications

1. NPN Ultrahigh-Definition CRT Display Horizontal Deflection Output

 

Sanyo TT2206 replacement

TT2206 Datasheet

The replacement is 2SС5793, TT2202, JL6920, 2SC5446.

 

TT2206 Datasheet PDF Download


Sanyo 2SC5793.pdf, Toshiba  2SC5446.pdf, Sanyo TT2202.pdf.

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