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Precision Thermistors &
Electronic Protection Components

China's trusted manufacturer of high-performance NTC & PTC thermistors, PPTC resettable fuses, thermal cutoffs, varistors, and sensor modules for industrial, automotive, and consumer electronics.

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About Thermistor-Sensor.com

Dongguan Ampfort Electronics Co., Ltd. is a leading Chinese manufacturer specializing in thermistors, resettable fuses, and electronic protection components. With over a decade of experience, we deliver reliable, high-quality solutions trusted by global partners in automotive, industrial, and consumer electronics sectors.

Quality Assurance

Rigorous quality control processes ensure every component meets international standards including UL, VDE, and RoHS compliance.

Factory Direct

As a direct manufacturer, we offer competitive pricing, fast lead times, and customization options for OEM and ODM projects.

Global Reach

Serving customers in over 50 countries with efficient logistics, technical support, and responsive communication.

Our Product Range

Explore our comprehensive catalog of thermistors, fuses, sensors, and protection components engineered for reliability and performance.

NTC Thermistor MF72 47D-20

Silicone Coated NTC Thermistor MF72 47D-20

  • 47 Ohms ±20%
  • Max Current: 4A
  • Lead: Copper, 170°C
  • Application: Power Supplies
Get Best Price
PPTC Resettable Fuse SMD075L

SMD PPTC Resettable Fuse SMD075L

  • Holding Current: 0.75A
  • Voltage: 33V
  • Size: 7.5x5.5mm
  • 2K per Reel
Get Best Price
PTC Thermistor MCL20

MCL20 PTC Resettable Fuse

  • Resistance: 100 Ohm
  • Temp: 120°C
  • Max Voltage: 440VAC
  • Current: 20A, 210J
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Thermal Cutoff Fuse G4A00240C

Thermal Cutoff Fuse G4A00240C

  • Rating: 10A, 250V
  • Temp: 240°C
  • One-Shot Protection
  • For Electric Cookers
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KSD Bimetal Thermostat

Adjustable Bimetal Thermostat KST-168

  • Temp: 135°C Adjustable
  • Rating: 16A, 250V
  • Thermal Switch
  • Industrial Use
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NTC Thermistor 3D-9

Power NTC Thermistor 3D-9

  • 3 Ohms, 4A
  • Max Temp: 170°C
  • For USB Adapters
  • Inrush Current Limiting
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PTC Thermistor MZ21

PTC Thermistor MZ21

  • Resistance: 400–600 Ohms
  • Voltage: 220VAC
  • Temp: 160°C
  • Stone Heating Element
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Gas Discharge Tube

Axial Ceramic Gas Discharge Tube

  • Voltage: 230V
  • 2-Pole Design
  • Surge Protection
  • 8mm Length
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Auto Blade Fuse RMS Series

RMS Series Auto Blade Fuse

  • Voltage: 80V
  • Range: 1A to 50A
  • ATO/ATC Style
  • Automotive Grade
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PCB Mount Fuse Holder

PCB Mount Fuse Holder BX511

  • For Car Refit
  • Rating: 10A, 30VDC
  • Compact Design
  • High Reliability
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PIR Sensor Module

Metal Case PIR Sensor Module

  • 8mm LDR Included
  • Metal Housing
  • Security & Lighting
  • Low Power Consumption
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Varistor MYE70-222F

High Energy Varistor MYE70-222F

  • Energy: 70KA
  • Voltage: 2200V
  • Surge Protection
  • Industrial SPDs
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Why Choose Thermistor-Sensor.com?

  • Factory Direct Pricing

    Eliminate middlemen and enjoy competitive pricing with high-volume discounts.

  • Customization Available

    Tailor components to your exact specifications — resistance, size, leads, packaging.

  • Fast Global Shipping

    Efficient logistics network ensures timely delivery to North America, Europe, and Asia.

  • Technical Support

    Our engineering team provides application guidance and troubleshooting assistance.

10+

Years in Industry

50+

Countries Served

160+

Thermistor Models

10M+

Units Shipped Annually

Frequently Asked Questions

What is the difference between NTC and PTC thermistors?

NTC (Negative Temperature Coefficient) thermistors decrease resistance as temperature increases, commonly used for temperature sensing and inrush current limiting. PTC (Positive Temperature Coefficient) thermistors increase resistance with temperature, often used for overcurrent protection and self-regulating heaters.

Do you offer samples?

Yes, we provide free samples for qualified customers. Please contact us through the official website to request samples with your project details.

Are your products RoHS compliant?

Yes, all our components are RoHS and REACH compliant, with full material declarations available upon request.

Can you customize thermistor resistance values?

Absolutely. We offer custom resistance values, tolerances, lead types, and packaging to meet your design requirements.

Get in Touch

For quotes, samples, or technical inquiries, contact our team directly.

Contact Information

Contact: Mr. James Lai

Phone: +86 18128566098

Fax: 86-0769-86293298

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