Diodes Incorporated
Back to Heating Controller


Heating Controller

Contact Sales

Log in or register to manage email notifications about changes to datasheets or PCNs for this part.

Product Description

The PT8A3222x/3298x are mixed signal CMOS LSI chips designed as heating controller with help of external NTC (Negative Temperature Component). NTC open protection is implemented for device safety.


  • Full power output at 120VAC and 240VAC
  • Auto temperature control with NTC
  • NTC open protection
  • Multi mode LED indicator
  • Pulse trigger for high current SCR/TRIAC (up to 100mA)
  • Auto Heating off after heating timer timeout (1hour)
  • Internal Zener
  • Low cost 8-Pin DIP and SOIC package


  • Curler
  • Straightener

Product Specifications

Product Parameters

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

Related Content


Technical Documents

Recommended Soldering Techniques


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

Request Documents