BK250-250-SZ

Ptc Resettable Fuses Overview

The YAGEO BK250-250-SZ is a radial leaded polymer PTC resettable fuse designed for PCB mounting. It features a disc shape with a diameter of 10.5 mm and a height of 15 mm. The component maintains a holding current of 250 mA and trips at 500 mA, operating within a maximum voltage of 250 VDC. Its initial resistance is 1.6 ohms, with a maximum trip resistance of 3.5 ohms. It supports a maximum fault current of 10 A and functions reliably between -40°C and +85°C.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection through self-resetting polymer technology
• Offers dual certification from UL and CSA safety agencies
• Features a compact radial leaded package suitable for through-hole applications

Ptc Resettable Fuses Applications

• Overcurrent protection in consumer electronics circuits
• Signal line protection in telecommunications equipment
• Power supply input protection for portable devices

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix configuration against official YAGEO documentation to ensure correct electrical ratings and physical dimensions. Confirm RoHS compliance status and safety certifications such as UL and CSA are explicitly listed for this variant. Cross-reference the datasheet parameters with system requirements before finalizing procurement orders.

Ptc Resettable Fuses Selection Notes

Select this component when a low-profile radial PTC fuse is required for 250V systems. Ensure the application current remains below the 250 mA holding threshold under all expected ambient temperatures. Verify that the 10 A maximum fault current rating exceeds potential surge levels without exceeding the device's thermal limits during tripping events.

Ptc Resettable Fuses Part Context

This part belongs to the BK250 series of resettable fuses, which are characterized by their disc-shaped construction and radial leads. The series provides overcurrent protection for various electronic applications, balancing compact size with reliable performance across standard industrial temperature ranges.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other BK250 series variants with matching 250 mA holding currents, such as BK250-250-DY or BK250-250-DZ. Verify dimensional compatibility and lead spacing when considering alternative manufacturers' equivalent products.