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Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V For Telecom System
Description Of The Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V
• Slow blow high current fuse
• Compact design utilizes less board space
• Wide current ratings
• Ceramic tube, gold or silver plated brass end cap construction
• Halogen free and RoHS compliant
Application Of The Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V
Primary and secondary circuit protection:
• Server and desktop power supplies
• Gaming console systems
• Voltage Regulator Module (VRM)
• Storage system power
• Base station power supplies
• Basic power supplies
• LED and general lighting
• Test equipment
Performances Of The Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V
| % of Ampere Rating(In) | Blowing Time |
| 100% * In | 4 hours Min |
| 200% * In | 120 sec Max |
Breaking Capacity: 50A@350V400Vdc,100A@350V400Vdc.
| Catalog No. | Ampere Rating | Voltage Rating | Breaking Capacity | Nominal Cold Resistance (Ohms) | I2TMelting Integral(A2.S) | Agency Approvals | |
| RU | CRU | ||||||
| R1032T.1100 | 1A | 350V/400V DC
| 100A@350V/400V 50A@400V350V | 0.177 | 4.011 | ● | ● |
| R1032T.1125 | 1.25A | 0.122 | 7.340 | ● | ● | ||
| R1032T.1150 | 1.5A | 0.072 | 11.92 | ● | ● | ||
| R1032T.1160 | 1.6A | 0.071 | 12.63 | ● | ● | ||
| R1032T.1200 | 2A | 0.055 | 14.40 | ● | ● | ||
| R1032T.1250 | 2.5A | 0.041 | 28.12 | ● | ● | ||
| R1032T.1300 | 3A | 0.032 | 44.90 | ● | ● | ||
| R1032T.1315 | 3.15A | 0.031 | 45.60 | ● | ● | ||
Images for some type surface mount fuses
Selecting Surface-mount Fuses
Fuse selection seems straightforward, in that, you pick one which has a current rating just a bit higher than your worstcase system
operating current. Unfortunately, it’s not that simple. There are derating considerations for operating current and application
temperature. Turn-on and other system operations (like processor speed changes or motor start up) cause current surges or
spikes that also require consideration when selecting a fuse. So selecting the right fuse for your application is not as simple as
knowing the nominal current drawn by the system.
Fuse Selection Flowchart Of The Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V
However, the basic considerations for fuse selection are shown in the flowchart presented in Figure 6. Following this flow chart
will help you select a fuse best suited for your application conditions
Temperature Derating Of The Time Delay Ceramic Tube Surface Mount Brick Fuse 1A DC 350V 400V
A fuse is a temperature sensitive device. Therefore, operating temperature will have an effect on fuse performance and lifetime.
Operating temperature should be taken into consideration when selecting the fuse current rating. The Thermal Derating Curve for
surface mount fuses is presented in Figure 4. Use it to determine the derating percentage based on operating temperature and
apply it to the derated system current.