A green ceramic capacitor with two silver wires and the text

Positive Temperature Coefficient Thermistor PTC 19P for welding machine

Key Features of PTC Thermistor 19P

● Cost-Effective Solution: Offers a competitive price while extending the lifespan of welding machines.

● Space-Saving Design: Compact form factor ideal for various industrial applications where space efficiency is critical.

● Automatic Reset Protection: Self-resetting mechanism ensures continuous protection and minimizes downtime.

● Quick Response and High Durability: Delivers fast and reliable performance, enhancing the safety and longevity of electronic circuits.

● Wide Voltage Compatibility: Operates across a broad voltage range and adheres to RoHS compliance standards.

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Details

Introduction of Positive Temperature Coefficient Thermistor PTC 19P

The PTC 19P series is a specialized positive temperature coefficient thermistor designed for overcurrent and overload protection in welding machines. These PTC elements provide automatic circuit protection, fast reaction to abnormal currents, and durable performance, ensuring safety and longevity of your equipment. Ideal for various industrial applications, the 19P PTC thermistor is space-efficient, RoHS compliant, and operates across a wide temperature range, making it a preferred choice for those seeking robust and efficient circuit protection solutions of welding machines.

Applications of 19P Positive Temperature Coefficient Thermistor

PTC 19P thermistors are specifically designed for use in welding machines, providing essential protection against overcurrent and overload scenarios. By preventing damage from abnormal temperatures and excessive current, these Positive temperature coefficient thermistors help extend the lifespan and maintain the safety of welding equipment.

PTC Thermistor 19P Product Advantages

Automatic Circuit Protection: The 19P PTC Thermistor can resume normal operation automatically after a fault, make sure protection continuously.
Operation Contactless : No noise, sparks, or flames during operation, ensuring silent and safe performance.
Reacts Fast: Quickly reacts to abnormal current, safeguarding the circuit effectively.
Overvoltage Protection: Superior performance in protecting circuits from voltage spikes.
Broad Voltage Compatibility: Ideal for diverse applications with different voltage requirements.
Space-Efficient Design: The PTC element 19P provides low steady resistance, making it perfect for applications where space is limited that need small size PTC thermistor.
Durable Reliability: Provides reliable performance over an extended period without degradation.
No Reset Required: Automatically returns to normal operation without manual intervention after overload protection is triggered.
Wide Temperature Range: Operates within a temperature range of 0 ~ +60°C (V=Vmax) and -25 ~ +125°C (V=0) effectively.
RoHS Compliant: Adheres to all relevant RoHS standards while being environmentally responsible.
Key Features of Positive Temperature Coefficient Thermistor 19P

PTC 19P Thermistor Main Technical Parameters

Nominal R25 Resistance:
- 100Ω (Conventional)
- Available options: 39Ω, 50Ω, 120Ω
Resistance Tolerance:
- 100Ω ± 30%
- Others: ± 25%
Rated Power: 0.5 W

Dimensions of PTC 19P Thermistor

Finished Product Diameter: 17.5-18.0 mm
Mold Size: 20 mm
Foot Distance: 7.5 ± 0.5 mm
Foot Length: 8 mm (cut foot length)
Thickness Comparison: The PTC Thermistor 19P is thicker than the 15P and 16P series.

Selection Guide of 19P PTC Element

When choosing a PTC Element 19P for welding machine overload protection, prioritize the device's operating voltage, current capacity, and application-specific requirements to ensure reliable performance, making it an ideal choice for various industrial applications.Also need consider the dimensions of the PTC thermistor.

PTC Thermistor 19P Working Principle

During normal operation, the 19P PTC thermistor remains in a low-resistance state, allowing current to flow below its rated limit, which ensures the circuit functions smoothly. However, if occurs a fault and the current exceeds the rated threshold, the PTC Element heats up and switches to a high-resistance state, effectively interrupting the circuit to prevent damage. Once the issue is resolved, the Positive temperature coefficient thermistor cools down, returning to its low-resistance state, and the circuit resumes normal operation automatically.

Naming Rules of 19P PTC Element

The naming convention of the PTC Element 19P series is straight forward:

19P: Identifies the series model.
101R, 390R, 500R, 121R: Indicates the specific nominal resistance value of each model.

PTC 19P Model List

Item	Model Number	Nominal Resistance	Allowable Deviation	Rated Power	Positive Temperature Coefficient Thermistor 19P Function
1	19P-390R	39Ω	±25%	0.5W	PTC 19P Thermistor special for welding machines overload protection.
2	19P-500R	50Ω	±25%	0.5W
3	19P-101R	100Ω	±30%	0.5W
4	19P-121R	120Ω	±25%	0.5W

Conclusion of Positive Temperature Coefficient Thermistor 19P

The 19P PTC Thermistor series is an essential component for welding machine safety, offering dependable protection, easy recovery, and long-term stability. As a leading choice among ptc thermistor manufacturers, DXM provides high-quality ptc elements that meet stringent standards, making them suitable for various industrial applications. Whether you need a specific resistance value or bulk orders, DXM has the expertise to fulfill your needs efficiently.

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