規格
| 屬性 | 價值 |
| Package / Case | Bulk |
| Series | Multifuse®, MF-R |
| Part Status | Active |
| Type | Polymeric |
| Voltage - Max | 30V |
| Current - Max | 40 A |
| Current - Hold(Ih)(Max) | 3 A |
| Current - Trip(It) | 6 A |
| Timeto Trip | 10.8 s |
| Resistance - Initial(Ri)(Min) | 20 mOhms |
| Resistance - Post Trip(R1)(Max) | 80 mOhms |
| Operating Temperature | -40°C ~ 85°C |
| Mounting Type | Through Hole |
| Size / Dimension | 0.472 L x 0.118 W (12.00mm x 3.00mm) |
| Height - Seated(Max) | 0.720 (18.30mm) |
概述
Description
The MF-R300 is a resettable fuse (PPTC) designed to protect circuits from overcurrent and overtemperature conditions. It automatically resets when the fault is removed, eliminating the need for manual replacement.
### Key Features:
- Hold Current: 3A (typical)
- Trip Current: 6A (typical)
- Voltage Rating: 30V (max)
- Fast Response: Quickly limits excessive current
- Compact Size: Surface-mount (SMD) design
### Applications:
- Battery packs
- USB ports
- Power supplies
- Consumer electronics
The MF-R300 enhances reliability by preventing damage from short circuits and overloads while maintaining continuous operation post-fault. Its self-recovery feature makes it ideal for space-constrained and maintenance-free systems.
For detailed specs, refer to the manufacturer’s datasheet.
### Key Features:
- Hold Current: 3A (typical)
- Trip Current: 6A (typical)
- Voltage Rating: 30V (max)
- Fast Response: Quickly limits excessive current
- Compact Size: Surface-mount (SMD) design
### Applications:
- Battery packs
- USB ports
- Power supplies
- Consumer electronics
The MF-R300 enhances reliability by preventing damage from short circuits and overloads while maintaining continuous operation post-fault. Its self-recovery feature makes it ideal for space-constrained and maintenance-free systems.
For detailed specs, refer to the manufacturer’s datasheet.
Equivalent
The MF-R300 is a resettable fuse (PPTC) by Bourns. Equivalent products include:
- TE Connectivity RUEF300
- Littelfuse 30R300
- Raychem PolySwitch RXEF300
- Vishay MF-R300
These offer similar 30V/3A ratings and resettable overcurrent protection. Verify specs for exact compatibility.
- TE Connectivity RUEF300
- Littelfuse 30R300
- Raychem PolySwitch RXEF300
- Vishay MF-R300
These offer similar 30V/3A ratings and resettable overcurrent protection. Verify specs for exact compatibility.
Features
The MF-R300 is a resettable fuse (PPTC) with the following key features:
- Current Rating: 3.0A (hold)
- Voltage Rating: 30V DC
- Trip Current: 6.0A (typical)
- Low Resistance: <50mΩ (typical)
- Fast Response: Quickly resets after fault removal
- Compact Size: Radial leaded package
- Wide Temp Range: -40°C to +85°C
- Reliable Protection: Overcurrent and overtemperature safeguard
Ideal for consumer electronics, automotive, and industrial applications.
- Current Rating: 3.0A (hold)
- Voltage Rating: 30V DC
- Trip Current: 6.0A (typical)
- Low Resistance: <50mΩ (typical)
- Fast Response: Quickly resets after fault removal
- Compact Size: Radial leaded package
- Wide Temp Range: -40°C to +85°C
- Reliable Protection: Overcurrent and overtemperature safeguard
Ideal for consumer electronics, automotive, and industrial applications.
Application
The MF-R300 is a resettable fuse (PPTC) used for overcurrent protection in various applications. Key areas include:
1. Consumer Electronics – Protects USB ports, chargers, and batteries in smartphones, tablets, and laptops.
2. Automotive – Safeguards infotainment systems, lighting, and power circuits.
3. Industrial Equipment – Ensures safety in motor controls, sensors, and power supplies.
4. Telecommunications – Protects networking devices, routers, and base stations.
5. Medical Devices – Used in portable and diagnostic equipment for reliable operation.
Its self-resetting feature makes it ideal for applications requiring automatic recovery after fault conditions.
1. Consumer Electronics – Protects USB ports, chargers, and batteries in smartphones, tablets, and laptops.
2. Automotive – Safeguards infotainment systems, lighting, and power circuits.
3. Industrial Equipment – Ensures safety in motor controls, sensors, and power supplies.
4. Telecommunications – Protects networking devices, routers, and base stations.
5. Medical Devices – Used in portable and diagnostic equipment for reliable operation.
Its self-resetting feature makes it ideal for applications requiring automatic recovery after fault conditions.
Package
The MF-R300 is a resettable fuse (PPTC) typically available in surface-mount (SMD) packages, such as 1210 (3.2mm x 2.5mm) or 1812 (4.5mm x 3.2mm). It offers overcurrent protection and automatically resets after fault conditions. Exact package dimensions may vary by manufacturer—refer to the datasheet for specifics.
