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456SD Series - NANO²® High Current Subminiature Surface Mount Fuse
Brand: Littelfuse, IncThe 456SD Series NANO²® fuse is a small sized, surface-mountable high current fuse which provides over-current and excessive surge current protection for applications operating at high current in a limited space.
This will be a supplementary offering to the existing 456 and 881 Series where the 50A fuse rating is not available.
Such applications are mostly served today through a single large-sized high-current industrial type fuse or in some cases, parallel configuration of lower amperage SMD fuses.
The 456SD 50A Series fuse gives the option of a single fuse solution for protection for such application requirements.
Features- Available in ratings of 40 to 50A
- High interrupting rating - 600A@75VDC
- Very low cold resistance, temperature rise, and voltage drop
- High inrush/surge current withstand capability
- Surface mountable high current fuse
- Single fuse solution for high current application
- Suitable for a wide variety of voltage requirement and application
- Enhances power efficiency
- Avoids nuisance opening due to high inrush and surge current inherent in the system
- Compatible with high volume assembly requirements
Specifications
Brand
Materials
- Body: Ceramic
- Cap: Silver-Plated Brass
Product Marking
- Body: Brand Logo, Current Rating
Insulation Resistance
- MIL-STD-202, method 302, Test Condition A (10,000 ohms, Min.)
Solderability
- MIL-STD-202, Method 208
Resistance to Soldering Heat
- MIL-STD-202, Method 210,Test Condition B (10 sec at 260° C)
PCB Recommendation for Thermal Management
- Alternate methods of thermal management may be used. In such cases, under normal operations, the Max. temperature of the fuse body should not exceed 90° C in a 25° C environment
- Minimum copper trace width = 15 mm (40 A) / 25 mm (50 A)
- Recommended copper trace weight = 3 oz. (40 A) / 6 oz. (50 A)
- For PSE requirements: Min. Copper trace width = 35 mm, Recommended Copper trace weight = 6 oz.
Operating Temperature
- -55° to 125° C with proper derating
Thermal Shock
- MIL-STD-202, Method 107, Test Condition B (5 cycles -65° to 125° C)
Vibration
- MIL-STD-202, Method 201 (10-55 Hz)
Moisture Sensitivity Level
- J-STD-020, Level 1
Moisture Resistance
- MIL-STD-202 Method 106, High Humidity (90-98 % RH), Heat (65° C)
Salt Spray
- MIL-STD-202, Method 101, Test Condition B
Mechanical Shock
- MIL-STD-202, Method 213, Test Condition I (100 G’s peak for 6 ms)
Approvals
- UL
- Voltage Regulator Module for PC Server
- Cooling Fan System for PC Server
- Storage System Power
- Base Station Power Supply
- Power Tools
