Overview
The MF-SM050-2-99 is a resettable fuse, also known as a Polymeric Positive Temperature Coefficient (PPTC) device, manufactured by Bourns Inc. Although this specific model is currently obsolete and no longer in production, it remains relevant for understanding the capabilities and applications of similar resettable fuses. This component is designed to protect electronic circuits from overcurrent conditions by interrupting the flow of current when it exceeds a certain threshold, and then resetting once the fault is cleared and the temperature drops.
Key Specifications
| Specification | Value |
|---|---|
| Current Rating | 40 A |
| Hold Current | 0.5 A |
| Trip Current | 1 A |
| Max Operating Temperature | 85 °C |
| Voltage Rating | 60 V |
| Power Rating | 1.7 W |
| Resistance at 25°C | 0.35 Ω |
| Package Type | SMD (Surface Mount Device) |
| Dimensions | 7.98 x 5.44 x (height) |
Key Features
- Resettable Functionality: Automatically resets once the fault is cleared and the temperature drops, eliminating the need for manual replacement.
- Overcurrent Protection: Protects electronic circuits from overcurrent conditions by interrupting the flow of current when it exceeds the specified threshold.
- Compact SMD Package: Designed for surface mount applications, making it suitable for modern PCB designs.
- High Current Rating: Capable of handling up to 40 A, making it suitable for high-current applications.
- Low Resistance: Offers a low resistance of 0.35 Ω at 25°C, minimizing voltage drop and power loss.
Applications
- Consumer Electronics: Used in various consumer electronics such as smartphones, tablets, and laptops to protect against overcurrent conditions.
- Automotive Systems: Employed in automotive systems for battery and electrical circuit protection.
- Industrial Equipment: Utilized in industrial equipment to ensure reliable and safe operation by protecting against overcurrent faults.
- Medical Devices: Implemented in medical devices where reliable and automatic reset functionality is crucial.
Q & A
- What is the MF-SM050-2-99 used for?
The MF-SM050-2-99 is used as a resettable fuse to protect electronic circuits from overcurrent conditions.
- What is the current rating of the MF-SM050-2-99?
The current rating of the MF-SM050-2-99 is 40 A.
- What is the hold current and trip current of the MF-SM050-2-99?
The hold current is 0.5 A, and the trip current is 1 A.
- What is the maximum operating temperature of the MF-SM050-2-99?
The maximum operating temperature is 85 °C.
- Is the MF-SM050-2-99 still in production?
No, the MF-SM050-2-99 is currently obsolete and no longer manufactured.
- What type of package does the MF-SM050-2-99 use?
The MF-SM050-2-99 uses a Surface Mount Device (SMD) package.
- What are the dimensions of the MF-SM050-2-99?
The dimensions are 7.98 x 5.44 mm.
- What is the resistance at 25°C for the MF-SM050-2-99?
The resistance at 25°C is 0.35 Ω.
- In what types of applications is the MF-SM050-2-99 commonly used?
It is commonly used in consumer electronics, automotive systems, industrial equipment, and medical devices.
- What happens when the MF-SM050-2-99 trips due to an overcurrent condition?
When the MF-SM050-2-99 trips, it interrupts the flow of current. Once the fault is cleared and the temperature drops, it automatically resets.
