1210L350SL-SYR

Ptc Resettable Fuses Overview

The Littelfuse 1210L350SL-SYR is a PolySwitch resettable PTC fuse in the Low Rho series, housed in a 1210 (3225 metric) SMD package. It features a hold current of 3.5 A and a trip current of 7 A, with a maximum voltage rating of 6 VDC. The device exhibits an ultra-low resistance of 18 mOhms and a power dissipation of 800 mW. It supports a maximum fault current of 50 A and operates within a temperature range of -40°C to +85°C. The component measures 3.43 mm in length, 2.8 mm in width, and 1 mm in height.

Ptc Resettable Fuses Feature Summary

• Ultra-low internal resistance design for minimal signal attenuation
• Automatic reset functionality upon cooling after fault removal
• Surface mount construction optimized for automated assembly

Ptc Resettable Fuses Applications

• Portable electronic devices requiring low-voltage circuit protection
• Data bus lines in consumer electronics
• Battery-powered equipment circuits
• Medical device power management systems

Ptc Resettable Fuses Procurement Notes

Verify that the suffix SYR corresponds to the specific ENIG termination plating required for your application, as standard variants may differ. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the selected packaging format aligns with your surface mount production capabilities and handling requirements.

Ptc Resettable Fuses Selection Notes

Select this component when circuit protection is needed for low-voltage applications where signal integrity is critical due to the low resistance profile. The 3.5 A hold current suits moderate load protection needs. Consider the 6 VDC rating limit carefully to ensure it matches the system supply voltage without exceeding maximum ratings during transient events.

Ptc Resettable Fuses Part Context

This part belongs to the Littelfuse 1210L Series, specifically the Low Rho sub-family designed for high-performance signal line protection. It utilizes polymeric positive temperature coefficient technology to provide overcurrent protection. The series is engineered to replace traditional fuses in space-constrained surface mount designs while offering reusable protection capabilities.

Ptc Resettable Fuses Replacement Considerations

The 1210L350SLWR is a verified substitute within the same series featuring similar electrical characteristics. Verify that the WR variant's termination plating meets the solderability and corrosion resistance requirements of the target assembly process.