B59850C0120A051

Ptc Resettable Fuses Overview

The B59850C0120A051 is a ceramic PTC resettable fuse manufactured by TDK Electronics. It features a maximum voltage rating of 265V and a hold current (Ih) of 200 mA. The trip current (It) is specified at 400 mA, with a maximum fault current capacity of 2.2 A. At 25°C, the typical resistance is 10 Ohms. The component operates within a temperature range of 0°C to 60°C and utilizes a radial, disc-style through-hole package measuring 13.50mm in diameter and 5.00mm in height.

Ptc Resettable Fuses Feature Summary

• Provides automatic circuit protection against overcurrent conditions through self-resetting functionality
• Constructed from ceramic materials for reliable thermal performance
• Designed for through-hole mounting with radial leads

Ptc Resettable Fuses Applications

• Overcurrent protection in AC mains-powered electronic circuits
• Secondary side protection in power supply units
• Signal line protection in communication equipment

Ptc Resettable Fuses Procurement Notes

Verify the complete part number B59850C0120A051 matches the required 200 mA hold current and 265V rating. Confirm that the 0°C to 60°C operating temperature range meets the application's environmental constraints. Ensure the radial through-hole package dimensions are compatible with the target PCB layout. Check for RoHS3 compliance requirements if applicable to the manufacturing process.

Ptc Resettable Fuses Selection Notes

Select this component when a 200 mA hold current is necessary for circuit protection. The 265V rating makes it suitable for direct connection to AC mains lines. Consider the 10 Ohm initial resistance for potential voltage drop impacts in low-voltage signal paths. The radial package requires specific drilling patterns compared to surface-mount alternatives.

Ptc Resettable Fuses Part Context

This device belongs to the B598xx series of PTC thermistors from TDK Electronics, formerly EPCOS. These components are designed for circuit protection applications requiring resettable fusing capabilities. The series offers various current ratings and voltage options to suit different industrial and consumer electronics needs.

Ptc Resettable Fuses Replacement Considerations

Cross-reference with other B59850 variants for different tolerance or packaging options. Verify compatibility with alternative manufacturers' 200 mA, 265V radial PTC fuses by comparing trip characteristics and physical dimensions.