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NTC Heating Controller with Multi LEDs

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Product Description

The PT8A3263/4/5/6/7/8 are mixed signal CMOS LSI chips specially designed for heating controller with the external NTC (Negative Temperature Component) sensor. NTC open protection is implemented for device safety and selectable 5 or 6 heating temperature levels.

PT8A3263/64 are for 5 step levels (eg.100℃, 120℃, 140℃, 160℃, 180℃) and PT8A3265/66 are for 6 step levels (eg. 100℃, 120℃, 140℃, 160℃, 180℃, 200℃). They can drive TRIAC or SCR directly and detect the heater’s temperature with NTC sensor input. They have up/down keys for temperature setting, On/Off Key for heating on/off control and 3 LEDs display mode.

PT8A3267/68 have 6 step levels (eg.100℃, 120℃, 140℃, 160℃, 180℃, 200℃). They can drive TRIAC or SCR directly and detect the heater’s temperature with NTC sensor input. They have up/down keys for temperature setting and On/Off Key for heating on/off control. They also have 1 second (2 seconds for PT8A3268A) delay function before go into off state and lock-key function. Their LEDs have special running flash mode (mode 4).

These devices can be used in both 120V and 240V power line system, as they can automatically adjust the heating power according to the power line voltage to avoid heating appliance damage or long heating time.

They have selectable build-in timer to enable/ disable auto-power off function after turn on 1 hour and the timer is 1 hour both under 60Hz and 50Hz power supply.


  • 5/6 steps heat temperature settings with 5 LEDs or 6 LEDs indicator
  • Auto temperature control with NTC
  • NTC open protection
  • Pulse trigger for high current SCR / TRIAC (up to 15mA)
  • Auto power off after exact 1 Hour heating(It is optional to disable.)
  • Dual Voltage (120/240V 50/60Hz) operations (only PT8A3263-3266A/B/C available)
  • Auto detect power supply Voltage (120V/240V) and frequency (50/60Hz)
  • Internal 5V Zener
  • DIP-16 and SOIC-16 package


  • Ceramic heating controller

Product Specifications

Product Parameters

Heating Element MCH
LED @ Heater On Remark
Auto Off Yes
On/Off Key Three Keys (ON & OFF Key, Up/Down Key)
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
Orderable Part Number Status Package Environmental Compliance Packing Buy from Distributor /
Contact Sales
Request Samples
Qty. Carrier
PT8A3263APE Obsolete PDIP-16 ROHS 25 TUBE
PT8A3263AWE Active SO-16 GREEN 50 TUBE


Authorized Distributor Quantity Inventory Date Countries/Regions Buy Online
Mouser Electronics Inc. 489 11/26/2022 South America, North America, Asia, Europe, Middle East Buy Now
Request Sample
PT8A3263AWEX Active SO-16 GREEN 2500 T&R Contact Sales Request Sample

Environmental Compliance Legend:
LFF: Pb-Free Finish and RoHS 5/6
TLFP: Totally Pb-Free Product and RoHS 6/6
LFGP: Pb-free Finish and Green Product, RoHS 5/6 and Halogen Free
TPGP: Totally Pb-Free and Green Product, RoHS 6/6 and Halogen Free
GREEN: Halogen-free and RoHS compliant
RoHS: RoHS compliant but NOT halogen-free

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-2280 2017-07-12 2018-01-12 Device End of Life (EOL)