YQD120N0045

Description：PTC RESET FUSE 265V 105MA RADIAL
Series：YQ
Mfr：Amphenol Advanced Sensors (Thermometrics)
Package：Bulk

SKU:ba7e8a6b42a1 Category: PTC Resettable Fuses Brand: Amphenol Advanced Sensors (Thermometrics)

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Product introduction

Product Detailed Parameters

Description：PTC RESET FUSE 265V 105MA RADIAL
Series：YQ
Mfr：Amphenol Advanced Sensors (Thermometrics)
Package：Bulk
Type：Ceramic
Voltage - Max：265V
Current - Hold (Ih) (Max)：105 mA
Current - Trip (It)：200 mA
Current - Max：800 mA
Time to Trip：-
Resistance - Initial (Ri) (Min)：-
Resistance - Post Trip (R1) (Max)：-
Resistance - 25°C (Typ)：45 Ohms
Operating Temperature：0°C ~ 60°C
Grade：-
Qualification：-
Ratings：-
Mounting Type：Through Hole
Package / Case：Radial, Disc
Size / Dimension：0.354" Dia x 0.197" T (9.00mm x 5.00mm)
Height - Seated (Max)：-
Thickness (Max)：-
Lead Spacing：0.201" (5.10mm)

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YQD120N0045

Overview

The YQD120N0045 is a Positive Temperature Coefficient (PTC) thermistor from the YQ series, manufactured by Amphenol Advanced Sensors. It features a nominal resistance of 45 Ohms with a tolerance of 20% and a maximum diameter of 9mm. The device operates at a maximum voltage of 265V, with a hold current (Ih) of 105mA and a trip current (It) of 200mA. Designed for PCB mount applications, it utilizes ceramic material to provide resettable overcurrent protection.

Feature Summary

Provides resettable overcurrent protection through positive temperature coefficient characteristics
Utilizes ceramic construction for reliable thermal performance
Designed for direct printed circuit board mounting

Applications

Overcurrent protection in electronic circuits
Self-resetting fuse applications
General electronic component protection

Procurement Notes

Verify the specific electrical ratings against the official datasheet before integration. Confirm that the hold current and trip current specifications align with the target circuit requirements. Ensure the package type and mounting style match the design constraints. Cross-reference the manufacturer part number to avoid confusion with similar series components.

Selection Notes

Select this component when a self-resetting PTC fuse is required for low-current protection. The 45 Ohm resistance and 105mA hold current define the operating limits. Consider the 265V maximum voltage rating for circuit compatibility. Evaluate the physical dimensions and lead spacing for PCB layout feasibility.

Part Context

This component belongs to the YQ series of PTC thermistors produced by Amphenol Advanced Sensors under the Thermometrics brand. The series focuses on ceramic-based resettable fuses designed for surface-mount or through-hole PCB integration. These devices are engineered to protect sensitive electronics from transient overcurrent conditions without requiring manual replacement.