30 Amp Fast Acting 437 Cross SM 125V Thin Film Surface Mount Fuses 1206
|Place of Origin:||Dongguan,Guangdong,China|
Payment & Shipping Terms:
|Minimum Order Quantity:||3000 pcs|
|Packaging Details:||Tape,3Kpcs per reel|
|Delivery Time:||7-10 Workdays|
|Payment Terms:||T/T, Western Union, MoneyGram|
|Supply Ability:||100,000,000 Pieces Per Month|
|Product Name:||437 Cross SMT 1206 Fast Blow Thin Film SMD Fuse||Fuse Type:||1206 (3216 Metric)|
|Breaking Capacity:||100A@72V 63V 32VDC 300A@24VDC||Ampere Range:||0.25-30A|
|Rated Voltage:||125V 72V 63V 32V||Operating Temperature:||-55°C To 125°C|
|Body:||Ceramic||Termination:||Silver Over-plated With Tin|
|Size:||3.1x1.6mm (1206)||Speed:||Fast Acting|
437 Cross SM Surface Mount Fuses,
125V Thin Film Surface Mount Fuses,
30 amp fast acting fuse 1206
437 Cross SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
Description Of The SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
1206 Fast blow smd fuse designed for overcurrent protection on PCB where will bring high
working ambient temperature and high inrush current withstand capability with high I²t values typical.
A precise melting time offers ultimate protection for sensitive electronic components, while a reflow
soldering process allows surface mount fuses to be directly attached to printed circuit boards.
The SMD fuse is compatible with a wide range of circuit designs, making this fuse the best choice
for all types of consumer electronic applications.
Features Of The SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
• Operating Temperature from -55ºC to +125ºC
• 100% Lead-free, HalogenFree and RoHS compliant
• Suitable for both leaded and lead-free reflow / wave soldering
• UL Recognized to UL/cUL
• Wide current range 0.25A-30A
• High voltage up to 125V
• High inrush current withstand capability
• High I²t values
• Fast blow
Fuse Cutoff Time Standard Of The SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
|Rated Current||% of Amp Rating||
|1A~3A||200%||1.0s - 60 s|
|1A~5A||300%||0.1s - 3.0 s|
|250mA~30A||1000%||0.2ms - 20.0 ms|
Application Of The SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
• LCD Displays
• Data Modems
• Power supplies
• LED driver
Specification Of The SMT 1206 Fast Blow Thin Film SMD Fuse 125V 72V 63V 32V 0.25A-30A
Cold. Resistance (mOhms) 2
|Typical Voltage Drop (mV)||
Does a fuse resistor work the same as a fuse?
However, is a fuse resistor able to substitute a fuse to have the same function? The answer is obviously no.
As we know, a good fuse must possess three essential functions: protection, load bearing and safety, while a fuse resistor may not be able to work well in all three aspects.
The protection function covers overload protection and short circuit protection. Specifically, a fuse must operate within the specified time when an unexpected overcurrent, even an extremely short overcurrent, occurs in the circuit, so as to protect the circuit and parts. A fuse resistor may not be as accurate as the fuse in terms of technical parameters like starting time and operation duration, and thus cannot ensure overcurrent protection. It only works to some extent for short current.
The load bearing function of a fuse is ensured by the I2t value, which enables a fuse to withstand pulse shocks of a certain energy from switching operations. We should calculate and evaluate this value before fuse selection. Nevertheless, a fuse resistor has no similar technical indexes, so it may be blown by a pulse if the value is small or fail to protect the circuit if it is large.
As for safety, a fuse can be assured through rated voltage, interrupting capacity and other indexes, especially safety compliance certification by an authorized third party. A fuse resistor is not a safety component, so it does not need certification. Its safety is therefore questionable. Furthermore, it has insufficient protection, and it's hard to ensure no hazards occur during the breaking process.
In conclusion, a fuse resistor may blow upon overcurrent, but it cannot work the same as a fuse. In most applications, it will not be appropriate to replace a fuse with a fuse resistor to cut cost.