MF-PSMF020X-2

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MF-PSMF020X-2

+BOM

PTC RESET FUSE 9V 200MA 0805

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Specifications

Attribute Value
Package / Case Tape & Reel (TR),Cut Tape (CT)
Series Multifuse®, MF-PSMF
Part Status Active
Type Polymeric
Voltage - Max 9V
Current - Max 40 A
Current - Hold(Ih)(Max) 200 mA
Current - Trip(It) 500 mA
Timeto Trip 20 ms
Resistance - Initial(Ri)(Min) 650 mOhms
Resistance - Post Trip(R1)(Max) 3.5 Ohms
Operating Temperature -40°C ~ 85°C
Mounting Type Surface Mount
Size / Dimension 0.085 L x 0.053 W (2.15mm x 1.35mm)
Thickness(Max) 0.033 (0.85mm)

Overview

Description

The MF-PSMF020X-2 is a miniature resettable fuse (PPTC) designed for overcurrent protection in low-voltage circuits. Key features include:
- Rated Voltage: 20V DC
- Hold Current (Ih): 2A
- Trip Current (It): 4A (typical)
- Fast Response: Resets automatically after fault removal
- Compact Size: Surface-mount (SMD) form factor
Commonly used in consumer electronics, battery packs, and USB ports, it safeguards against short circuits and overloads. Its polymeric PTC (positive temperature coefficient) material increases resistance when overheated, limiting current flow. Once the fault is resolved, it cools and returns to low resistance.
Ideal for space-constrained applications requiring reliable, maintenance-free protection. For exact specifications, refer to the manufacturer’s datasheet.

Features

The MF-PSMF020X-2 is a resettable polymeric PTC fuse (PPTC) with the following key features:
- Rated Voltage: 20V
- Hold Current: 2A
- Trip Current: 4A (typical)
- Max Current: 40A
- Operating Temp Range: -40°C to +85°C
- Low Resistance: <50mΩ (typical)
- Fast Trip Response: Protects against overcurrent/short circuits
- Resettable: Automatically resets after fault removal
- Compact Size: Surface-mount (SMD) design
- Applications: Overcurrent protection in consumer electronics, batteries, and power circuits
Compact, reliable, and reusable, it’s ideal for safeguarding circuits without replacement.

Manufacturer

The MF-PSMF020X-2 is manufactured by Bourns, a globally recognized electronics company specializing in circuit protection, sensors, and passive components. Founded in 1947 and headquartered in California, USA, Bourns is known for its high-quality resettable fuses (PPTCs), resistors, and other electronic solutions. The MF-PSMF020X-2 is part of their PolySwitch™ product line, designed for overcurrent protection in compact applications.
Bourns serves industries like automotive, telecommunications, and consumer electronics, emphasizing reliability and innovation.

Package

The MF-PSMF020X-2 is a surface-mount (SMD) resettable fuse (PPTC) in a 1206 package size (3.2mm x 1.6mm). It offers overcurrent protection with a 2.0A hold current and is designed for compact PCB applications. Typical uses include consumer electronics, power supplies, and automotive circuits. Its small form factor and resettable functionality make it ideal for space-constrained designs.

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