1N4007 Diode M7 - Datasheet, Equivalent & Applications

The 1N4007 diode is one of the most widely used rectifier diodes in electronics. Known for its reliability, affordability, and ability to handle high reverse voltages, it commonly find in power supplies, adapters, battery chargers, and protection circuits. Its robust design and versatility make it suitable for both hobbyist and industrial applications.

1. What is a 1N4007 Diode?

2. IN4007 Diode Specifications & Features

3. 1N4007 Diode Equivalent & Replacement

4. 1N 4007 SMD M7 Diode PCBA Design

5. 1N4007 Diodes Advantages and Disadvantages

6. 1N4007 Rectifier Diode Application

7. Frequently Asked Questions

What is a 1N4007 Diode?

The 1N 4007 diode is a general-purpose plastic rectifier designed to convert alternating current (AC) into direct current (DC) in power supply circuits. It belongs to the 1N400x diode family and is valued for its ability to withstand high reverse voltages up to 1000V while delivering a steady forward current of 1A. Encased in a durable plastic body, it provides reliable performance and good thermal stability. The IN4007 widely use in adapters, battery chargers, inverters, and electronic control circuits. Its low cost, strong surge capability, and dependable operation make it a preferred choice for general rectification and protection applications.

IN4007 Diode Specifications & Features

1N 4007 Diode Specifications

Features

The 1N 4007 diode offers reliable performance through its low forward voltage drop, low leakage current, and high forward surge capability. A low forward voltage drop improves efficiency by reducing power loss and heat generation during operation. Its low leakage current ensures minimal energy waste and better performance in sensitive electronic circuits. The diode’s high surge current capability allows it to withstand sudden current spikes, making it suitable for power supply rectification and inductive load protection. These features contribute to improved durability, energy efficiency, and stable operation, making the IN4007 a dependable choice for general-purpose rectification and protection applications.

Package Options

The 1N4007 diode is available in both through-hole(Axial) and surface-mount(SMD) packages to suit different PCB designs:

These package options provide flexibility for designers, allowing use in traditional hand-soldered circuits as well as modern automated surface-mount PCBs.

Manufacturers

The IN4007 diode produce by several well-known semiconductor manufacturers, ensuring consistent quality, reliability, and global availability. Major producers include Vishay Intertechnology, Fairchild Semiconductor (now part of ON Semiconductor), and Motorola.

These manufacturers follow strict industry standards and provide dependable components suitable for consumer electronics, industrial equipment, and power supply designs. Availability from multiple sources also makes the 1N 4007 easy to procure and replace in both commercial and hobbyist applications.

1N4007 Diode Equivalent & Replacement

The M7 diode is a surface-mount version of the 1N4007 rectifier diode, designed for compact PCB layouts and automated assembly. It provides the same electrical characteristics as the standard 1N 4007, including a maximum reverse voltage of 1000V and a forward current rating of 1A. Encased in the DO-214AC (SMA) package, the M7 diode is ideal for space-constrained designs, offering reliable AC-to-DC rectification and protection against voltage spikes. Its low forward voltage drop, minimal leakage current, and high surge capability make it suitable for power supplies, inverters, converters, and general-purpose rectification applications, while supporting efficient and durable surface-mount installation.

If the IN4007 is unavailable, several alternatives provide similar or improved performance.

1N4007 SMD Diode Equivalents (800V – 1000V)

The 1N 4007 SMD diode can replace with several surface-mount rectifiers that offer similar voltage and current handling capabilities. These equivalents are suitable for general-purpose rectification, AC-to-DC conversion, and protection against voltage spikes. They provide comparable forward voltage drop, surge tolerance, and reliability, while allowing flexibility in PCB design and layout.

IN4007 High-Voltage Diode Equivalents (>1000V)

For applications requiring a voltage rating higher than 1000V, the 1N 4007 can replace with high-voltage rectifiers such as EM513, EM520, or 1N5399. These diodes provide enhanced reverse voltage tolerance while maintaining reliable forward current handling and rectification performance. They are suitable for power supplies, inverters, converters, and circuits exposed to voltage spikes, ensuring stable operation and protection.

1N 4007 SMD M7 Diode PCBA Design

1N4007 Footprint (DO-41 Through-Hole)

Typical PCB footprint considerations:

Lead spacing: ~10 mm

Hole diameter: 1.2 – 1.4 mm

Pad diameter: 2.5 – 3 mm

SMD Footprint (M7 / SMA)

Pad length: ~2.5 – 3.0 mm

Pad spacing: ~2.0 – 2.5 mm

SMD Diode Pinout

The band on the diode body indicates the cathode.

1N4007 Diodes Advantages and Disadvantages

The 1N 4007 widely use in electronics because its reliable performance and versatility, but it also has some limitations.

Advantages

The diode has a high reverse voltage capability up to 1000V, making it suitable for most general-purpose circuits. It can handle a forward current of 1A and peak surge currents up to 30A. Its low forward voltage drop reduces power loss and heat generation, while low leakage current ensures efficient operation in sensitive circuits. The durable plastic package is suitable for both through-hole and surface-mount designs. Additionally, it is cost-effective and widely available, making it easy to replace.

Disadvantages

The 1N4007 is not suitable for high-frequency switching applications and has a slower recovery time compared to fast-recovery diodes. Its larger DO-41 size can be less ideal for space-constrained PCB designs.

1N4007 Rectifier Diode Application

Rectification: Used for general-purpose rectification in electronic circuits. It efficiently converts alternating current (AC) into direct current (DC) in power supplies, ensuring a stable and continuous flow of electricity for electronic devices and components. Its high voltage tolerance allows it to handle fluctuations without damage.

Inverters and Converters: This diode is commonly employed in inverters and converters to regulate current flow and maintain stable voltage levels. It ensures that electronic circuits operate safely and efficiently, preventing unexpected current surges that could damage sensitive components.

Freewheeling Protection: The 1N 4007 functions as a freewheeling diode to protect circuits from voltage spikes caused by inductive loads, such as motors and transformers. By providing a path for sudden current reversals, it prevents potential damage and enhances the longevity of electronic systems.

Other Applications: With its high reverse voltage tolerance and reliable forward current handling, the IN4007 is suitable for a variety of applications, including battery chargers, LED power circuits, inverters, and general protection circuits. Its versatility makes it a staple component in both consumer electronics and industrial equipment.

1N4007 PDF Datasheet

Datasheets detailed information including: Maximum ratings, thermal characteristics, electrical performance curves and mechanical dimensions.

The document is useful for design verification and component selection.

Frequently Asked Questions

What is 1N4007 diode price?

The 1N4007 is affordable, typically priced between $0.002 to $0.10 per piece in bulk orders. Retail single units may cost slightly more depending on the supplier, package type, or region. Its low cost makes it widely accessible for hobbyists, educational projects, and industrial applications.

Is 1N4007 diode AC or DC?

The IN4007 diode itself is neither AC nor DC. It is a rectifier diode that allows current to flow in only one direction. When used in circuits, it converts alternating current (AC) into direct current (DC), providing a stable DC output for power supplies and electronic devices.

What is the difference between 1N4001 and 1N4007?

The primary difference between 1N4001 and 1N4007 is the maximum reverse voltage. The 1N4001 can handle up to 50V reverse voltage, whereas the 1N 4007 supports up to 1000V. Both diodes have the same forward current rating of 1A, but IN4007 is suitable for higher voltage applications.

How many amps can a 1N4007 diode handle?

The 1N4007 can handle a continuous forward current of 1A. It can also tolerate peak surge currents up to 30A for short durations, such as during inrush or transient conditions. Proper heat dissipation is necessary to maintain long-term reliability when operating near maximum current limits.

Which side of 1N4007 diode is positive?

The anode of the 1N4007 is the positive side, while the cathode is marked by a colored band. Current flows from the anode to the cathode under forward bias. Correct orientation is crucial for rectification and protection applications in AC-to-DC circuits.

What is a 1N4007 diode used for?

Use for general-purpose rectification, converting AC to DC in power supplies. It also provides reverse polarity protection, freewheeling in inductive loads, surge suppression, and voltage spike protection in inverters, converters, battery chargers, and LED circuits. Its versatility suits both consumer and industrial electronics.

What is the function of the 1N4007 SMD Diode?

The 1N 4007 SMD serves the same rectification and protection functions as the standard 1N4007 but is designed for surface-mount PCB assembly. It efficiently converts AC to DC, protects circuits from reverse voltage, and fits compact layouts, making it ideal for automated manufacturing and modern electronics requiring smaller, low-profile components.

What does SMD mean in 1N4007 SMD Diode?

SMD stands for Surface Mount Device, meaning the diode is designed to be mounted directly onto the surface of a printed circuit board (PCB) rather than through holes. This allows for compact designs, automated assembly, and efficient manufacturing, especially in modern electronics with limited PCB space.

How to Safely Long Run 1N4007 in a Circuit?

To safely operate a diode long-term, keep the current below 1A, ensure adequate heat dissipation, and avoid continuous operation near its surge limit. Maintain proper PCB spacing, use ventilation if necessary, and add snubber circuits for inductive loads. This prevents overheating, voltage stress, and ensures reliable, long-term performance.

Conclusion

The 1N4007 diode remains a fundamental component in power electronics because its high voltage tolerance, durability, and low cost. Whether used in power supplies, protection circuits, or converters, it offers dependable performance across a wide range of applications. Its availability in both through-hole and SMD formats further enhances its versatility for modern electronic design.

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