Composite PTC Thermistor Varistor 30-50 OHM 115C 390V SPMZ11-10E300-500R/14D391
Composite PTC Thermistor Varistor 30-50 OHM 115C 390V SPMZ11-10E300-500R/14D391
Description
The SPMZ11-10E300-500R/14D391 is a multifunctional circuit protection component that integrates a Positive Temperature Coefficient (PTC) thermistor with a Varistor (Metal Oxide Varistor, MOV) into a single composite package. With a resistance range of 30-50 Ω and a threshold temperature of 115°C, this device is designed to provide both overtemperature and overvoltage protection. It features a high voltage rating of 390V, making it suitable for use in compact electronic assemblies where space efficiency and reliable safety protection are critical.
| Product Name | Composite PTC Thermistor |
| Curie Temperature | 115±7℃ |
| R25 | 30-50Ω±2% |
| Varistor Voltage | 390 ±10% VDC |
| Non-action Current | 70mA |
| Max Operating Voltage | 275VAC |
| Color | Green |
| Marking | SP 213 |
| Coating | Silicone Resin |
| Package | PE bag, 250pcs/bag |
Features
•Composite Design: Combines PTC thermistor and varistor functions in one package for streamlined assembly and reduced component count.
•Resistance Range: Offers a cold resistance between 30Ω and 50Ω for precise circuit operation.
•High Cut-off Temperature: Features a nominal cutoff (curie) temperature of 115°C, ensuring reliable overtemperature protection.
•Superior Voltage Handling: Rated for 390V to effectively suppress voltage surges and transients.
•Compact Form Factor: Packaged in the SPMZ11 series form factor (comparable to 14D391), suitable for space-constrained applications.
Dimensional Drawing
Application
Power Supplies: Protection against overcurrent and overvoltage in switching power supplies and adapters.
Input Filter Circuits: Safeguarding sensitive electronics from thermal runaway and surge events.
Home Appliances: Used in motor protection circuits and control boards for products such as air conditioners and refrigerators.
Industrial Electronics: Providing reliable circuit protection in automation equipment and instrumentation where both voltage spikes and temperature fluctuations are concerns.
Contact Details:
Andy Wu
Email: andy@tianrui-fuse.com.cn
Tel/Whatsapp: +86 13532772961
Wechat: HFeng0805
Skype: andywutechrich
QQ: 969828363
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