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4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245 4512 3912 60A 125VAC
Product features Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
• 4818 (1245 metric) size
• Fast-acting high current brick fuse
• Compact design utilizes less board space
• Wide range of current rating available
• Wide operating temperature range
• Low temperature de-rating
• Tape and Reel for automatic placement
• Conflict free metals
• Ceramic tube, silver plated brass end cap construction
• Designed to UL248-1/14
• Moisture sensitivity level (MSL): 1
Application Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
Primary and secondary circuit protection:
• Server and desktop power supplies
• Energy storage systems
• E-bikes
• LED and general lighting
• Power distribution units
• Gaming console systems
• Voltage Regulator Module (VRM)
• Point-of-load (POL) protection
• High power battery packs
• Storage system power
• Basic power supplies
Electrical Parameters Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
| Catalog No. | Ampere Rating | Voltage Rating | Breaking Capacity |
Nominal Cold Resistance (Ohms) | I2TMelting Integral(A2.S) | Agency Approvals | |
| UL | CUL | ||||||
| R1245F.15 | 15A | 250V/125VAC/DC 72V63V/32VDC | 200A@250VAC 500A:@125VAC 1000A@72V63V/32VDC | 0.0033 | 365 | ● | ● |
| R1245F.20 | 20A | 0.0025 | 630 | ● | ● | ||
| R1245F.25 | 25A | 0.0018 | 1000 | ● | ● | ||
| R1245F.30 | 30A | 0.0014 | 1750 | ● | ● | ||
| R1245F.40 | 40A | 0.001020 | 3065 | ● | ● | ||
| R1245F.50 | 50A | 0.000920 | 3765 | ● | ● | ||
| R1245F.60 | 60A | 0.000758 | 4165 | ● | ● | ||
| R1245F.80 | 80A | 0.000890 | 5275 | ● | ● | ||
| R1245F.100 | 100A | 0.000710 | 8085 | ● | ● | ||
Certifications Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
| Agency | Ampere Range | Agency File Number |
| UL | 15A ~ 100A | E502159 (JDYX2) |
| CUL | 15A ~ 100A | E502159 (JDYX8) |
Dimensions Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
Electrical Characteristics Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
Breaking Capacity: 200A @250VAC500A:@125VAC 1000A@72V63V/32VDC
| % of Ampere Rating(In) | Blowing Time |
| 100% * In | 4 hours Min |
| 200% * In | 60 sec Max |
Average Time Current Curves Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
Environmental Characteristic Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
When choosing the fuse's specification, if the operating environmental temperature beyond the scope
from 20~30℃, engineer should consider the environmental temperature's affection to fuses.
Please refer: Temperature Rerating Curve:
Recommended Soldering Parameters Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
A: Wave /Reflow Soldering Parameters:
Solder paste process.
Solder Pot Temperature: 260°C Max
Solder Dwell Time: 5 seconds max
| Reflow Condition | Pb-Free assembly | |
| Average ramp-up rate (Ts(max)to Tp) | 5°C /second max. | |
| Preheat | Temperature Min (Ts(min)) | 150°C |
| Temperature Max (Ts(max)) | 200°C | |
| Time (Min to Max) (ts) | 60-120 seconds | |
| Reflow | Temperature (TL) | 220°C |
| Time Max (tL) | 60 seconds | |
| Peak Temperature(Tp) | 260°C max | |
| Ramp-down Rate | 5°C/second max | |
| Time 25°C to peak Temperature (Tp) | 8 minutes max | |
B: Hand-Solder Parameters:
Solder Iron Temperature: 300±5℃
Heating Time: 1~2 s Max
Packaging Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245
Taped packing:1500 pcs per inner box,5 inner boxes per outer carton
Actual Product Photos Of The 4818 Fast Blow SMT Surface Mount High Current Brick Fuse 1245