Composite Male Run Tee Swivel

 

Part#	Tube Size(1*2)* Male NPTF	B HEX	L	M	PARKER	Automann	Fairview
3042-4C	1/4*1/8	9/16	1.80	0.76	VS371PTCR-4-2	177.12C714A	CPC1471SW-4A
3042-4D	1/4*1/4	9/16	1.94	0.76	VS371PTCR-4-4	177.12C714B	CPC1471SW-4B
3042-6D	3/8*1/4	3/4	2.29	1.01	VS371PTCR-6-4	177.12C716B	CPC1471SW-6B
3042-6E	3/8*3/8	3/4	2.29	1.01	VS371PTCR-6-6	177.12C716C	CPC1471SW-6C
3042-8D	1/2*1/4	15/16	2.59	1.15	VS371PTCR-8-4	177.12C718B
3042-8E	1/2*3/8	15/16	2.59	1.15	VS371PTCR-8-6	177.12C718C	CPC1471SW-8C
3042-8F	1/2*1/2	15/16	2.78	1.15	VS371PTCR-8-8	177.12C718D
3042-10F	5/8*1/2	1-1/16	3.24	1.44	VS371PTCR-10-8

 

PTCR materials (Positive Temperature Coefficient Resistors) are a special type of functional material whose resistance value significantly increases with temperature. This material is commonly used for temperature control, overcurrent protection, and self regulating heating applications, and is widely used in fields such as electronics, power, automotive, and industrial control.

 

 

The core characteristic of PTCR materials is the positive temperature coefficient (PTC) effect, which means that their resistance increases nonlinearly with increasing temperature. Its working principle is as follows:

(1) At low temperatures, the resistance is low At ambient temperature, the resistance value of PTCR material is relatively small, and it can conduct electricity normally, allowing current to flow smoothly.

(2) When the temperature rises, the resistance increases sharply. When the temperature reaches a specific Curie temperature, the migration of electrons inside the material is restricted, leading to a rapid increase in resistance and thus limiting the flow of current

(3) Automatic adjustment or protective function

In heating applications, when the set temperature is reached, the resistance increases, reducing the current and avoiding overheating.

In circuit protection applications, when overcurrent or short circuit occurs, the temperature rise causes the resistance to increase sharply, thereby limiting the current and preventing circuit damage.

 

 

Although PTCR is a type of PTC material, it is typically used specifically for high stability and precision applications such as heating and circuit protection compared to ordinary PTC materials.

 

Comparison items	PTCR material	Ordinary PTC material
Main purpose	Overcurrent protection, self regulating heating, stable current	Temperature control sensor, thermistor
Resistance variation characteristics	Nonlinear mutation	Linear or gentle variation
Working temperature range	80℃~300℃	40℃~150℃
Stability	Higher, suitable for long-term work	More common, may drift

 

 

(1) Ceramic based PTCR material

The main components are barium titanate (BaTiO) and its dopants.

It has the advantages of high reliability, high heat resistance, and aging resistance.

Mainly used in scenarios such as current protection and heating elements.

Can be used for power equipment, automotive circuit protection, industrial automation control, etc.

 

(2) Polymer based PTCR material

Composed of conductive fillers (such as carbon black, metal particles) and polymer composites.

It has the characteristics of good flexibility, strong customizability, and light weight.

Suitable for fields such as flexible electronic devices, battery protection, wearable devices, etc.

 

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