| Allicdata Part #: | SQM300JB-20R-ND |
| Manufacturer Part#: |
SQM300JB-20R |
| Price: | $ 0.05 |
| Product Category: | Resistors |
| Manufacturer: | Yageo |
| Short Description: | RES WW 3W 5% TH |
| More Detail: | 20 Ohms ±5% 3W Through Hole Resistor Radial Anti-A... |
| DataSheet: |  SQM300JB-20R Datasheet/PDF |
| Quantity: | 1000 |
| 2800 +: | $ 0.04583 |
| Series: | SQM |
| Packaging: | Bulk |
| Part Status: | Active |
| Resistance: | 20 Ohms |
| Tolerance: | ±5% |
| Power (Watts): | 3W |
| Composition: | Ceramic |
| Features: | Anti-Arc, Flame Proof, Moisture Resistant, Safety |
| Temperature Coefficient: | ±300ppm/°C |
| Operating Temperature: | -55°C ~ 155°C |
| Package / Case: | Radial |
| Supplier Device Package: | Radial Lead |
| Size / Dimension: | 0.472" L x 0.315" W (12.00mm x 8.00mm) |
| Height - Seated (Max): | 1.043" (26.50mm) |
| Number of Terminations: | 2 |
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Through Hole Resistors
The SQM300JB-20R is a through hole resistor. This type of resistor is a device which limits the amount of current that can flow in an electrical circuit and is often used in power and overload protection, voltage-dividing networks, signal-scaling networks, and other applications where a specific amount of current flow is needed.
This type of resistor is made of a metal alloy, usually manganese, copper, iron, and nickel, and is usually found in cylindrical shapes. The method of construction is that a length of the metal alloy is wound around a ceramic tube which is then insulated with a layer of wax or plastic. The outer diameter of the resistor is then sealed with a metal cap.
The typical component rating for this through hole resistor is 0.25 Watts. This rating enables it to be used with voltages of up 0.75 volts, and currents of up to 1 amp. This type of resistor is generally designed for static applications, as it is very robust.
In terms of its application field, the SQM300JB-20R through hole resistor is primarily used in applications which require a variable resistance, such as motors and lighting. It is also used in power supply circuits, multiple power systems, relay circuits, and AC voltage control circuits. It is also useful in protection circuits such as over-voltage protection circuits and over-temperature protection circuits.
The working principle of a through hole resistor is simple. It acts as an electrical barrier, gradually slowing down the flow of electrical current. Resistance is measured in Ohms, and the higher the resistance, the more the current will be slowed down. A higher resistance also means that less power will be lost in the form of heat.
In conclusion, the SQM300JB-20R is a very useful through hole resistor. It is durable and can be used in applications where variable resistance is needed, such as motors, lighting, and power supplies. The working principle is simple, as it acts as an electrical barrier to gradually slow down the flow of current. This type of resistor is suitable for both static and dynamic applications.