All categories
Featured selections
Trade Assurance
Buyer Central
Help Center
Get the app
Become a supplier
(1175 products available)
The 1N4007 diode is a ceramic disc component used in electrical systems for voltage clamping. It has a soft-start circuit to reduce inrush currents and prolong the life of sensitive components. The SMD (surface mount device) diodes, which are tiny components designed for direct surface mounting on a PCB, are available in different variants. They are integrated circuits. For example, a 1N4007 SMD Zener diode regulates voltage levels but differs from a typical Zener diode. A standard Zener diode will have a higher voltage rating than an SMD 1N4007 Zener. Another variant is the 1N4007 SMD Schottky diode, which has a low forward voltage drop and fast switching speed. They are ideal for high-speed operations in low-voltage applications. They can also be used in circuits that require rapid rectification.
A more regular SMD 1N4007 diode is typically directly replaceable with a through-hole component in most applications. However, deciding on the proper placement is essential to ensure an adequate current rating and reverse voltage rating, as they may be different due to the physical size constraints. In very light load situations, a 1N4007 diode can be chosen because it is available in all its sizes and usual manufacturing costs. The comparison is otherwise crucial if the component will be in a high-density electronic device where many are used, which is why a more miniature component is preferred.
Because surface mount devices are assembled on a PCB's surface rather than inserted into holes, they tend to be shorter and more miniature than through-hole devices. This makes manufacturing and automation easier. Another distinguishing feature of SMDs is that, instead of using leads, they are mounted on pads. The pads are typically larger because they need to be soldered on rather than just held by friction in the PCB holes.
The 1N4007 is a discrete, passive, unipolar semiconductor with two electrodes or terminals. Like barrage diodes, they have a noisy square law and a unidirectional conducting property, which allows them to be used as rectifiers that convert AC into DC. When reverse-biased, the depletion region widens, cutting off the current to another load. These make them suitable for use as clamping devices for overvoltage events. For example, when an inductive load switches off, this occurrence can happen.
The 1N4007 SMD specifications are primarily based on the N4007. They include a maximum repetitive peak reverse voltage of 1000 volts, a maximum DC blocking voltage of 1000 volts, a maximum forward current of 1 amp, a maximum forward voltage drop of 0.7 volts at a forward current of 1 amp, a reverse recovery time of 2 microseconds at a forward current of 0.5 amps, and a junction temperature range of -55 to 150 degrees Celsius.
Although the 1N4007 diode is not complex, its maintenance is still easy because it requires cleaning. Cleaning is vital to avoid any component buildup and ensure proper functioning. Users should only use a soft brush or lint-free cloth to get rid of any debris or dust from the surface of the diode. They should avoid using any products that can leave a residue or harsh chemicals. If possible, they should also use an anti-static strap to avoid damaging the diode due to electrostatic discharge. More importantly, users should always keep the diode's datasheet and apply any recommended maintenance techniques.
1n4007 SMD is a useful component in various scenarios and applications. As a semiconductor device, it can be applied in several industries to meet specific needs.
Power Supply Modules
In numerous power supply modules, 1n4007 SMD can be used for rectification and voltage regulation. Power supplies for computers, communication equipment, consumer electronics, and industrial machinery all fall within this category.
LED Lighting
1n4007 SMD is often applied in LED lighting products such as LED bulbs, LED lamps, LED strips, etc. It functions to rectify the AC power from the driver so that the LED chip can work steadily.
Automotive Electronics
In numerous automotive electronic products, such as vehicle control units, infotainment systems, lighting systems, etc., 1n4007 SMD can be used for signal rectification, voltage clamping, and circuit protection, among other things.
Industrial Control System
In industrial control systems, such as programmable logic controllers (PLC), human-machine interfaces (HMI), sensor systems, etc., 1n4007 SMD can be used for data signal processing, sensor feedback circuits, and control output circuits.
Consumer Electronics
1n4007 SMD can be widely used in various consumer electronic products, such as TVs, set-top boxes, audio, video players, etc. It can be used for signal processing, power supply rectification, and circuit protection.
When deciding which SMD diode to buy or stock, it is crucial first to determine the application. Knowing the intended use will make it easier to choose the crucial parameters. Begin by determining the required voltage rating and ensure it is higher than the application or circuit voltage. Also, make sure that the current rating meets or exceeds the levels anticipated in the circuit. Next, consider the circuit's working temperature. The diode's reverse recovery time must also be compatible with the intended application. For high-frequency switching applications, select diodes with a fast or ultrafast recovery time. In a low-leakage application, consider low-leakage diodes, especially in radiation-hardened environments.
Since the 1N4007 is known to fail catastrophically, devise a circuit design that can tolerate or protect against diode failure. For example, ensure that there is adequate over-voltage protection within the circuit. Consider using a Zener diode to clamp the voltage if there is a risk of transient spikes. Also, ensure that the current passing through the diode is within the rated limit to avoid overheating and potential catastrophic failure. If there's a possibility of the diode failing, use a fuse in series to protect other critical components.
Due to the small packaging and size, it is important to ensure that the chosen diode can easily be integrated into any PCB layout. It is crucial to leverage the diode's important part number in the BOM to make the designing process easier. Finally, applicants who are interested in bulk purchase can contact the manufacturer for a samples test or pilot order before committing to a large purchase.
Q1: Where is the cathode part of the 1N4007 diode?
A1: The 1N4007 has a stripe on one side of its body. This stripe indicates the cathode side of the diode.
Q2: What is the difference between 1N4007 and 1N4001 to 1N4006?
A2: The 1N4001 to 1N4006 diodes have the same physical appearance as the 1N4007 diode. However, their voltage and amperage ratings are different. The 1N4007 has a voltage rating of 1kV. Its reverse current rating ranges between 400mA to 1A, depending on the specific model. For example, the 1N4005 has a maximum voltage of 600V, while the 1N4006 has a maximum voltage of 800V. Because of these variations, many people prefer the 1N4007 because it works in more applications.
Q3: What material does the SMD diode make?
A3: Many SMD diodes are glass or ceramic materials. The SMD diode maker will determine the material.Frequently Asked Questions
Q4: What does SMD stand for in a diode?
A4: SMD stands for surface mount device. SMD diodes are small electronic components manufactured to ensure that manufacturers can easily and quickly mount them on circuit boards.
Q5: What is the difference between SMD and through-hole diodes?
A5: The SMD diode is small and flat to facilitate surface mounting on the circuit board. A through-hole diode will have long leads inserted through holes in the circuit board. SMD diodes take up less space on the board than through-hole diodes.
