Overview

Product Description

The PT8A3299/3289 is a mixed signal CMOS LSI chip designed as heating controller with help of external NTC (Negative Temperature Component). NTC open protection is implemented for device safety.

Auto heating-off after heating timer timeout.
Auto temperature control: maintains user selected temperature.
120V/240V Dual-voltage.

Features

Dual Voltage (120/240V) operations
Internal 5V Zener
Auto temperature control with NTC
NTC open protection
Multi mode LED indicator
Pulse trigger for high current SCR/TRIAC
Auto Heating off after heating timer timeout (1.2h at 50Hz and 1h at 60)
Low cost 8-Pin DIP/SOIC package

Applications

Curler
Straightener

Specifications & Technical Documents

Product Parameters

Heating Element	Mica/PTC
LED @ Heater On	Flash
Auto Off	Yes
On/Off Key	One Key (ON-OFF)
Driver Type	SCR/Triac

Technical Documents

Recommended Soldering Techniques

TN1.pdf

Additional Technical Documents are available upon request:
Application information, Evaluation board, and Other technical documents

Request Documents

Purchase & Availability

Product Change Notices (PCNs)

A PCN may only apply to specific orderable part numbers in this datasheet. Please refer to the corresponding PCN to see the exact orderable part number(s) affected.

PCN #	Issue Date	Implementation Date	Subject
PCN-2770	2025-10-30	2025-10-30	Add Fab Site Code, Country of Diffusion (COD) and Assembly Site Origin (ASO) on Product and Shipping Labels for all Diodes Products

PT8A3289Q