Product Specification
The 0253010-M is a part number that typically corresponds to a surface-mount, automotive-grade fuse (common in Littelfuse’s product lineup, though confirmation with specific datasheets is recommended). Designed to meet stringent automotive industry standards (e.g., AEC-Q200), it serves as a critical overcurrent protection component, featuring compact size, reliable fusing characteristics, and compatibility with harsh operating environments—making it ideal for safeguarding automotive electrical systems and subsystems.
The core function of the 0253010-M is to protect circuits from damage caused by excessive current. When the current in the circuit exceeds the fuse’s rated current (inferred as 10A from the part number suffix "10-M," a common naming convention for fuses), the fuse’s internal element rapidly melts (or "blows") to break the circuit. This prevents overheating, insulation damage, or even fire in wires, connectors, and downstream electronic components (e.g., controllers, sensors, or actuators) due to short circuits, load malfunctions, or wiring faults.
As an automotive-specified component, it is engineered to operate stably across extreme environmental conditions:
- Wide temperature range: Typically 耐受 -40°C to 125°C, adapting to underhood, cabin, or chassis-mounted environments with drastic temperature fluctuations.
- Vibration and shock resistance: Compliant with automotive vibration standards (e.g., ISO 16750), ensuring it does not prematurely open or fail due to vehicle operation on rough terrain.
- Corrosion resistance: The housing and terminations are designed to resist moisture, salt spray, and automotive fluids, maintaining performance in harsh undercarriage or engine bay settings.
Depending on the exact variant, the 0253010-M may offer either:
- Fast-acting protection: Quickly blows in response to sudden overcurrents (e.g., short circuits), ideal for sensitive electronics like ADAS sensors or infotainment modules.
- Time-delay (slow-blow) protection: Tolerates temporary inrush currents (e.g., during motor startup or component initialization) without tripping, while still blocking sustained overcurrents—suitable for loads like pumps, fans, or lighting systems.
Adopting a surface-mount technology (SMT) package (common in automotive fuses for space-constrained PCBs), it enables automated assembly, saves board space, and ensures secure soldering to withstand automotive vibrations.
The 0253010-M is primarily used in automotive electrical systems due to its automotive-grade certification, with key application scenarios including:
- Protects circuits for cameras, radar (e.g., adaptive cruise control radar), LiDAR, and ADAS controllers. These components rely on stable power, and the fuse prevents damage from short circuits in wiring harnesses or sensor malfunctions.
- Safeguards power supplies for touchscreens, 5G/V2X communication modules, GPS receivers, and audio systems. Prevents overcurrent from faulty USB ports, speaker short circuits, or module failures.
- Protects BCM output circuits for interior/exterior lighting (e.g., LED headlights, tail lights), power windows, and door locks. The fuse’s current rating (10A) matches typical loads for these subsystems.
- Shields low-current circuits in powertrain sensors (e.g., oxygen sensors, throttle position sensors) or chassis systems (e.g., anti-lock braking system (ABS) auxiliary circuits). Resists high temperatures and vibration in engine bay or chassis mounts.
- Protects auxiliary circuits in EVs/HEVs, such as on-board charger (OBC) low-voltage controls, battery management system (BMS) sensor lines, or HVAC blower motors. Complies with EV-specific reliability requirements.
- Used in trucks, buses, or construction equipment to protect auxiliary electronics (e.g., telematics devices, fleet tracking systems) from overcurrents in rugged operating environments.
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