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Product Detailed Parameters
- Description：PTC RESET FUSE HEATERS +/-40%
- Series：YQ
- Mfr：Amphenol Advanced Sensors (Thermometrics)
- Package：Bulk
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- Resistance - Post Trip (R1) (Max)：-
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Overview
The YQS5940PTH is a Positive Temperature Coefficient (PTC) thermistor manufactured by Amphenol Advanced Sensors under the Thermometrics brand. Classified as a PTC heater, this component utilizes a resettable fuse mechanism for thermal management applications. It features a resistance tolerance of +/-40%, indicating its specific calibration for heating elements rather than precision sensing. The device operates within standard industrial temperature ranges suitable for integrated circuit protection and localized heat generation tasks.
Feature Summary
- Positive Temperature Coefficient behavior for self-regulating heating
- Resettable fuse functionality for overcurrent protection
- Designed for localized thermal management applications
Applications
- Integrated circuit thermal protection
- Battery pack heating systems
- LCD display backlight heaters
Procurement Notes
Verify the specific datasheet version for the YQS5940PTH to confirm exact resistance values and maximum current ratings. Ensure the +/-40% tolerance aligns with your thermal design requirements. Cross-reference the package dimensions and lead configuration with your PCB layout constraints before finalizing procurement.
Selection Notes
Select this component when a combined heating element and overcurrent protection device is required in a compact form factor. Consider the +/-40% resistance variance during circuit design to ensure adequate heat output across all units. Evaluate the operating temperature range against the ambient conditions of the target application environment.
Part Context
Amphenol Advanced Sensors produces the Thermometrics line of specialized sensors. This part belongs to the PTC thermistor category, distinct from NTC types used primarily for measurement. The product family focuses on providing reliable thermal control solutions for consumer electronics and automotive subsystems requiring precise temperature regulation.
Replacement Considerations
Consult official Amphenol documentation for direct substitutes. Verify that any alternative PTC heater maintains compatible voltage ratings and thermal response characteristics. Generic replacements may not match the specific resistance tolerance or package footprint.
