What is your minimum order quantity?
At least 1000pcs for each item.
What is the delivery period?
About 20-25days, it is up to your order quantity.
What is your payment term?
T/T(30% before production and 70% before shipment),L/C,D/A, D/P, T/T, Western Union, MoneyGram, OA
Can you send free samples?
We can send free samples.
What is your shipping ways?
For sample we usually send by DHL, FEDEX, UPS, THT, EMS(taking 5-7business days). For mass product we are shipping by sea or by air.
What are the main differences between polymer PTC thermistors and fuses, bimetal circuit breakers and ceramic PTC thermistors?
Polymer PTC thermistor is a conductive polymer material with positive temperature coefficient characteristics. The most significant difference between it and a fuse is that the former can be used repeatedly. Both products can provide overcurrent protection, but the same polymer PTC thermistor can provide this protection multiple times. After the fuse provides overcurrent protection, it must be replaced with another one.
The main difference between the polymer PTC thermistor and the bimetal circuit breaker is that the former will be in the off state and will not be reset before the accident is eliminated, but the bimetal circuit breaker can reset itself when the accident still exists This may cause electromagnetic waves and sparks during reset. At the same time, reconnecting the circuit while the circuit is in a fault condition may damage the equipment and is therefore unsafe. The polymer PTC thermistor can maintain a high resistance state until the fault is eliminated.
The difference between the polymer PTC thermistor and the ceramic PTC thermistor is the difference in the initial resistance value of the component, the operating time (response time to the accident) and the size. Compared with the ceramic PTC thermistor, the polymer PTC thermistor with the same sustaining current has a smaller size, lower resistance, and faster response.
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