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Product Detailed Parameters
- Description：PTC RESET FUSE 480V RADIAL DISC
- Series：PTO
- Mfr：Amphenol Advanced Sensors (Thermometrics)
- Package：Bulk
- Type：Ceramic
- Voltage - Max：480V
- Current - Hold (Ih) (Max)：-
- Current - Trip (It)：-
- Current - Max：-
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Resistance - 25°C (Typ)：5 kOhms
- Operating Temperature：10°C ~ 55°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.350" Dia x 0.300" T (8.89mm x 7.62mm)
- Height - Seated (Max)：0.350" (8.89mm)
- Thickness (Max)：-
- Lead Spacing：0.250" (6.35mm)
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Overview
The YQS5934PTO is a radially-wired bare PTC disc thermistor from the Thermometrics PTO series. It features a resistance of 5 kOhms at 25°C and a transition temperature of 102°C. The component supports a maximum operating voltage of 480 Vrms. Designed for surface or through-hole mounting, it serves as a resettable fuse in electronic circuits.
Feature Summary
- Provides automatic circuit protection by increasing resistance above the transition temperature
- Functions as a self-resetting fuse to prevent overcurrent damage
- Capable of handling high voltages up to 480 Vrms
Applications
- Current regulation in power supplies
- Circuit protection against overcurrent events
- Overtemperature protection in electronic assemblies
Procurement Notes
Verify the specific package configuration and lead times with authorized distributors, as availability may vary. Confirm that the 480Vrms rating aligns with your system's electrical requirements. Ensure the 102°C transition point matches the thermal management strategy of the target application to guarantee reliable operation under expected load conditions.
Selection Notes
Select this component when a high-voltage resettable fuse is required for circuit protection. The 5 kOhm initial resistance and 102°C transition point are critical parameters for defining the trip threshold. Consider the radial wire form factor for compatibility with existing PCB layouts or wiring harnesses compared to surface-mount alternatives.
Part Context
This part belongs to the Thermometrics PTO series of positive temperature coefficient (PTC) thermistors. These devices are engineered for robust performance in industrial and consumer electronics. The series offers various resistance and voltage ratings to suit different circuit protection needs, providing a reliable alternative to traditional fuses.
Replacement Considerations
Direct substitutes must match the 5 kOhm resistance, 102°C transition temperature, and 480Vrms voltage rating. Verify that any replacement maintains the radial lead configuration and bare disc construction to ensure mechanical fit and electrical continuity in the assembly.
