Allicdata Part #: | RWR78S1R40FRB12-ND |
Manufacturer Part#: |
RWR78S1R40FRB12 |
Price: | $ 2.25 |
Product Category: | Resistors |
Manufacturer: | Vishay Dale |
Short Description: | RES 1.4 OHM 10W 1% WW AXIAL |
More Detail: | 1.4 Ohms ±1% 10W Through Hole Resistor Axial Milit... |
DataSheet: | RWR78S1R40FRB12 Datasheet/PDF |
Quantity: | 1000 |
100 +: | $ 2.04480 |
300 +: | $ 1.85310 |
500 +: | $ 1.72530 |
1000 +: | $ 1.59750 |
Series: | Military, MIL-PRF-39007, RWR78S |
Packaging: | Bulk |
Part Status: | Active |
Resistance: | 1.4 Ohms |
Tolerance: | ±1% |
Power (Watts): | 10W |
Composition: | Wirewound |
Features: | Military, Moisture Resistant |
Temperature Coefficient: | ±50ppm/°C |
Operating Temperature: | -55°C ~ 250°C |
Package / Case: | Axial |
Supplier Device Package: | Axial |
Size / Dimension: | 0.375" Dia x 1.780" L (9.53mm x 45.21mm) |
Height - Seated (Max): | -- |
Number of Terminations: | 2 |
Failure Rate: | R (0.01%) |
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Through Hole Resistors are electronic components used to control the flow of electrical current in a circuit. They are used to create a specific amount of resistance in a circuit, which in turn will limit the current flow through the circuit. The RWR78S1R40FRB12 is a through-hole resistor, typically manufactured with a two-wire, four-ring design.
The RWR78S1R40FRB12 features a four-ring structure, which consists of two sets of two concentric rings mounted on a ceramic substrate. The outer set of rings contains a first and second ring, while the inner set of rings consists of a third and fourth ring. The design of these four rings allows for the resistor value to be changed by adjusting the relative spacing between the two inner rings and the two outer rings. This spacing is set by the manufacturer, and based on the desired resistance value of the resistor, which is indicated by a four-digit code. The four digits indicate the resistance value in ohms.
The four rings of the RWR78S1R40FRB12 are fabricated using a metal oxide film on a ceramic substrate. This type of film provides excellent insulation and a low specific resistance. The outer two rings of the four-ring design are electrically connected to one side of a power source, while the inner two rings of the design are each electrically connected to the other side of the power source. The outer two rings serve as the primary resistive factor, while the inner two rings are smaller and provide some additional resistance, thus creating the total resistance value of the resistor.
The application field of the RWR78S1R40FRB12 is quite broad. It is suitable for use in a variety of circuits, ranging from voltage regulation and level shifting, to current limiting and signal conditioning. The resistor can be utilized in both linear and switching power supplies. Additionally, it is compatible with a variety of voltages and power ratings, from low voltage and low power applications, to high voltage and high power applications. The resistor is also suitable for use in power circuits operating at frequencies up to 1 MHz.
The working principle of the RWR78S1R40FRB12 is simple. When electrical energy is applied to the outer two rings of the four-ring design, electrons flow through the two inner rings, causing a voltage drop across the entire resistor. This voltage drop is inversely proportional to the resistance value of the resistor, which is determined by the spacing between the two inner rings and the two outer rings. By correctly setting the relative spacing of the four rings, the desired resistance value of the resistor can be achieved.
In conclusion, the RWR78S1R40FRB12 is a through-hole resistor, typically manufactured with a two-wire, four-ring design. It is suitable for use in a variety of circuits, ranging from voltage regulation and level shifting, to current limiting and signal conditioning. The working principle of the resistor is simple: by correctly setting the internal four-ring design of the resistor, the desired resistance value of the resistor can be achieved.
The specific data is subject to PDF, and the above content is for reference
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