BK250-090-DY

Ptc Resettable Fuses Overview

The YAGEO BK250-090-DY is a polymeric positive temperature coefficient (PPTC) resettable fuse designed for through-hole PCB mounting. It features a radial lead configuration with a 5.1 mm lead spacing and a disc package shape. The component maintains a hold current of 90 mA and trips at 180 mA, supporting a maximum voltage of 250 V and a maximum rated current of 3 A. Its initial resistance is specified at 6 Ohms, with a power dissipation rating of 1 W. The device operates within a temperature range of -40°C to +85°C.

Ptc Resettable Fuses Feature Summary

• Polymeric PTC technology provides automatic circuit protection that resets after fault clearance
• Radial through-hole construction facilitates standard PCB assembly processes
• Disc form factor offers compact integration for space-constrained electronic designs

Ptc Resettable Fuses Applications

• Overcurrent protection in AC/DC power supply circuits
• Protection of portable electronic devices from excessive current flow
• Circuit safeguarding in consumer electronics assemblies

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix DY against official YAGEO documentation to confirm the disc package style and radial lead configuration. Ensure the hold current requirement aligns precisely with the 90 mA specification for the target application. Confirm RoHS compliance status via the manufacturer datasheet before procurement.

Ptc Resettable Fuses Selection Notes

Select this component when a low-current protection solution is required for through-hole applications. The 90 mA hold current suits sensitive circuits needing precise overcurrent limits. Verify that the 250 V maximum voltage rating exceeds the system operating voltage. Consider the 6 Ohm initial resistance impact on circuit performance during normal operation.

Ptc Resettable Fuses Part Context

This part belongs to the YAGEO BK250 series of PTC resettable fuses. The series includes various hold currents and package styles, such as square and disc forms. The BK250-090-DY specifically denotes the 90 mA variant with a disc package, distinguishing it from other series members like the BK250-120-SZ which uses a square package.

Ptc Resettable Fuses Replacement Considerations

Cross-reference with other YAGEO BK250 series parts for different current ratings or package types. Verify compatibility with existing PCB footprints when substituting between disc and square packages. Check datasheets for equivalent electrical characteristics if considering non-YAGEO alternatives.