BK250-040-DZ

Ptc Resettable Fuses Overview

The YAGEO BK250-040-DZ is a radial, disc-shaped polymer PTC resettable fuse designed for PCB mounting. It features a holding current of 40 mA and a trip current of 80 mA, with a maximum voltage rating of 250 V. The device has a maximum rated current of 3 A and an initial resistance of 27 Ohms. It operates within a temperature range of -40°C to +85°C and utilizes a 5.1 mm lead spacing.

Ptc Resettable Fuses Feature Summary

• Provides automatic self-resetting overcurrent protection via positive temperature coefficient polymer technology.
• Offers dual certification from UL and CSA safety standards for international compliance.

Ptc Resettable Fuses Applications

• Overcurrent protection for portable electronic devices
• Protection circuits in telecommunications equipment
• Circuit safeguarding in computer peripherals

Ptc Resettable Fuses Procurement Notes

Verify the specific suffix DZ against official YAGEO documentation to confirm packaging configuration and reel specifications. Ensure the procurement order matches the exact part number BK250-040-DZ to avoid confusion with similar series variants. Confirm RoHS compliance status through the manufacturer's latest environmental declaration before finalizing supply chain agreements.

Ptc Resettable Fuses Selection Notes

Select this component when circuit protection requires a 40 mA holding current and a 250 V maximum voltage rating. The radial disc package is suitable for through-hole PCB mounting where a 5.1 mm lead spacing is available. Consider the 27 Ohm initial resistance and thermal characteristics for applications operating between -40°C and +85°C.

Ptc Resettable Fuses Part Context

This component belongs to the BK250 series of resettable fuses manufactured by YAGEO. The series offers various current ratings and package styles, including disc and square forms. The BK250-040-DZ specifically addresses low-current protection needs with a compact radial design, fitting into broader circuit protection strategies requiring reliable, reusable safety components.

Ptc Resettable Fuses Replacement Considerations

Direct substitutes include other YAGEO BK250 series parts with matching electrical parameters, such as the BK250-040-DY. Verify that alternative candidates maintain identical voltage, current, and physical dimensions to ensure compatibility with existing PCB layouts and thermal requirements.