About Amwei Thermistor Co., Ltd. - Thermistor Supplier in China

China hosts Amwei Thermistor Co., Ltd., which currently lists five active thermistor products in its catalogue. The items include a PTC thermistor current protector, linear silicon PTC thermistors for temperature control, a PTC thermistor designed for temperature protection, a PTC unit aimed at telecom over‑current protection, and an NTC thermistor for inrush‑current limiting. Each product is identified under the semiconductor thermistor HS‑code family (typically HS 8542.31) and is marketed for electronic circuit protection and temperature sensing applications. The supplier is classified as an imported tier with a harbor trust rating, indicating that it operates through established trade channels in China.

The catalogue focuses exclusively on solid‑state temperature and current protection components. PTC devices listed are generally used where resistance increases with temperature to limit fault currents, while the NTC inrush‑current limiter conducts high current at low temperature and rises sharply as the device warms. Typical specifications for these parts include rated current (Imax) from 0.5 A to several amperes, voltage ratings up to 250 V, resistance values ranging from a few ohms to several kilo‑ohms at 25 °C, and operating temperature spans from - 40 °C to +150 °C. No additional product categories or accessories are mentioned in the supplied data.

Product Range and Specialties of Amwei Thermistor Co., Ltd.

Amwei’s five thermistor offerings cover both positive temperature coefficient (PTC) and negative temperature coefficient (NTC) types. In the broader industry, PTC thermistors are often fabricated from barium titanate ceramic or polymer composites and are graded by their resistance‑temperature characteristic (e.g., IEC 60747‑5‑1 class A, B, or C). NTC inrush‑current limiters are typically made from manganese‑nickel spinel powders and are specified by their resistance at 25 °C (R25) and the B‑value that defines the temperature coefficient. Buyers generally look for specifications such as Imax, Vmax, tolerance (±5 % to ±10 %), response time, and maximum operating temperature, all of which are standard data points for the product types Amwei lists.

Trade and Export Information - Amwei Thermistor Co., Ltd.

Chinese thermistor manufacturers export primarily to automotive, telecom, consumer electronics, and industrial automation sectors in Europe, North America, and Southeast Asia. The HS‑code 8542.31 is used for customs clearance of semiconductor thermistor devices, and importers often need to provide test reports that confirm compliance with IEC 60747 standards. Commonly required certifications include RoHS for restricted substances, IEC safety markings, and where applicable CE or UL listings. Shipping is typically arranged in 20‑ft or 40‑ft containers using FOB or CIF Incoterms; products are packed in anti‑static bags or sealed trays within corrugated cartons to protect against moisture and electrostatic discharge.

Sourcing from Amwei Thermistor Co., Ltd. - Buyer Guidance

When sourcing from Amwei, buyers should request the full datasheet for each thermistor, confirming R25, Imax, Vmax, temperature range, and tolerance. It is advisable to obtain a material safety data sheet (MSDS) and any available test reports that verify IEC 60747 compliance, as well as RoHS or other environmental certificates. Prior to order confirmation, verify the supplier’s packaging method, MOQ (often 1 000 units per part) and lead time (typically 30‑45 days), and ensure that the agreed Incoterm aligns with the buyer’s logistics plan.

What thermistor product types are listed by Amwei Thermistor Co., Ltd.?

Amwei lists five thermistor products: a PTC current protector, linear silicon PTC thermistors for temperature sensing, a PTC device for temperature protection, a PTC unit for telecom over‑current protection, and an NTC thermistor for inrush‑current limiting.

Which technical specifications should be checked for these thermistors?

Buyers should verify rated current (Imax), voltage rating (Vmax), resistance at 25 °C (R25), temperature coefficient (B‑value for NTC or class for PTC), operating temperature range, and tolerance, all of which are standard in IEC 60747‑5‑1 (PTC) and IEC 60747‑5‑2 (NTC) documentation.

What certifications are typically required for thermistor imports from China?

Importers usually request RoHS compliance, IEC safety markings, and where applicable CE or UL certification to demonstrate conformity with electromagnetic and material safety standards.

Which HS code is normally applied to thermistor products?

Thermistors are generally classified under HS chapter 85, heading 8542.31, which covers semiconductor devices of the thermistor type.

What are typical minimum order quantities and lead times for these items?

Suppliers often set a minimum order quantity of around 1 000 units per part, with a production lead time of 30‑45 days after order confirmation and receipt of any required test documentation.

How are the thermistors packaged for international shipment?

Standard packaging includes anti‑static poly‑bags or sealed trays placed in corrugated cartons; bulk shipments are loaded into 20‑ft or 40‑ft containers using FOB or CIF terms.

What documentation should a buyer request before placing an order?

Buyers should ask for a detailed datasheet, material safety data sheet (MSDS), test report confirming resistance and temperature characteristics, and any applicable conformity certificates such as RoHS or IEC safety marks.

Which regions typically import thermistors from China?

The main import markets are Europe, North America, and Southeast Asia, where the devices are used in automotive electronics, telecom infrastructure, consumer appliances, and industrial control systems.