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Product Detailed Parameters
- Description：PTC RESET FUSE 30V 250MA RADIAL
- Series：YP
- Mfr：Amphenol Advanced Sensors (Thermometrics)
- Package：Bulk
- Type：Ceramic
- Voltage - Max：30V
- Current - Hold (Ih) (Max)：250 mA
- Current - Trip (It)：500 mA
- Current - Max：1:00 AM
- Time to Trip：-
- Resistance - Initial (Ri) (Min)：-
- Resistance - Post Trip (R1) (Max)：-
- Resistance - 25°C (Typ)：4.6 Ohms
- Operating Temperature：0°C ~ 60°C
- Grade：-
- Qualification：-
- Ratings：-
- Mounting Type：Through Hole
- Package / Case：Radial, Disc
- Size / Dimension：0.256" Dia x 0.138" T (6.50mm x 3.50mm)
- Height - Seated (Max)：0.472" (12.00mm)
- Thickness (Max)：-
- Lead Spacing：0.236" (6.00mm)
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Overview
The YQS8123 is a radial lead PTC thermistor manufactured by Amphenol Advanced Sensors under the Thermometrics brand. It features a maximum operating temperature of +60°C and a current rating of 250 mA. The component is classified as a standard PTC device with a tolerance of +/-30%. It complies with RoHS standards and is lead-free.
Feature Summary
- Positive Temperature Coefficient (PTC) behavior for circuit protection
- Radial leaded package configuration for through-hole mounting
- Standard tolerance specification of +/-30%
- RoHS compliant and pbFree construction
Applications
- Overcurrent protection in low-voltage electronic circuits
- Self-resetting fuse applications in consumer electronics
- Temperature sensing in environments up to 60°C
Procurement Notes
Verify the specific datasheet version for precise resistance curves, as standard PTC characteristics vary significantly between manufacturers. Confirm that the 250 mA current rating aligns with your circuit's operational requirements. Ensure the radial lead form factor fits your PCB layout constraints. Check for any specific packaging quantities if ordering in bulk.
Selection Notes
Select this component when a self-resetting overcurrent protection device is required for low-current applications. The 250 mA rating defines the hold current limit. Consider the +/-30% tolerance for design margins. The radial package simplifies manual or wave soldering processes compared to surface-mount alternatives.
Part Context
This part belongs to the Thermometrics line of PTC thermistors from Amphenol Advanced Sensors. These devices are designed to increase resistance sharply upon reaching a specific temperature threshold, providing automatic resettable protection against overcurrent conditions in sensitive electronic assemblies.
Replacement Considerations
Direct substitutes must match the 250 mA current rating and radial package style. Verify that alternative PTC thermistors offer comparable trip temperatures and +/-30% tolerance levels to ensure circuit compatibility without redesign.
