What is an M7 High Voltage Rectifier Diode?

FREE-SKY (HK) ELECTRONICS CO.,LIMITED / 12-29 21:45

The M7 High Voltage Rectifier Diode is a widely used surface-mount component. This article will discuss the M7 high voltage rectifier diode in detail, including its basics, specifications, features, working principles, applications, and comparisons.

Catalog

1. M7 High Voltage Rectifier Diode Basic

2. M7 Diode CAD Models

3. M7 Diode Pinout Details

4. Alternatives & Equivalent Model

5. M7 Diode Specifications

6. M7 Diode Features

7. M7 Diode Working in Circuit

8. M7 Diode Applications

9. M7 Characteristics Curves

10. M7 Diode Safely Operation

11. Comparison: M7 Diode vs 1N4007 Diode

12. M7 Diode Mechanical Dimensions

M7 High Voltage Rectifier Diode Basic

The M7 High Voltage Rectifier Diode from VTRONS is a surface-mount rectifier diode designed for general-purpose AC to DC conversion. It is electrically equivalent to the popular 1N4007 diode but comes in a compact SMA (DO-214AC) package, making it suitable for modern PCB designs where space is limited. This diode is widely used to control current flow and block reverse voltage in electronic circuits.

With a typical forward current rating of 1 A and a maximum reverse voltage of up to 1000 V, the VTRONS M7 diode is well-suited for high-voltage applications. It is commonly found in power supplies, adapters, chargers, LED drivers, and consumer electronics.

If you are interested in purchasing the M7 High Voltage Rectifier Diode, feel free to contact us for pricing and availability.

M7 Diode CAD Models

M7 Diode Pinout Details

Terminal	Name	Description
Pin 1	Anode	The anode is the positive terminal. Current enters the diode through this pin when the diode is forward-biased.
Pin 2	Cathode	The cathode is the negative terminal. It is identified by the stripe/line marking on the diode body. Current flows out from this pin during normal operation.

Alternatives & Equivalent Model

1N4007

UF4007

RS1M

GS1M

ES1M

FR107

HER108

BYT79-1000

BY255

M7 Diode Specifications

Parameter	Specification
Diode Type	High Voltage Rectifier Diode
Package Type	SMA (DO-214AC), Surface Mount
Average Forward Current (I_F(AV))	1 A
Peak Repetitive Reverse Voltage (V_RRM)	1000 V
RMS Reverse Voltage (V_RMS)	700 V
DC Reverse Voltage (V_DC)	1000 V
Forward Voltage (V_F)	1.0 – 1.1 V @ 1 A
Peak Forward Surge Current (I_FSM)	30 A (8.3 ms half-sine wave)
Reverse Leakage Current (I_R)	≤ 5 µA @ 1000 V
Reverse Recovery Time (t_rr)	~2 µs
Operating Junction Temperature	−55 °C to +150 °C
Storage Temperature	−55 °C to +150 °C
Thermal Resistance (Junction to Ambient)	~75 °C/W
Mounting Type	Surface Mount
Polarity Marking	Cathode band on package

M7 Diode Features

• Surface-mount rectifier diode (SMA / DO-214AC package)

• Plastic package rated UL 94V-0 flame retardant

• Designed for surface-mounted applications

• Low reverse leakage current for improved efficiency

• High reverse voltage capability (up to 1000 V)

• Average forward current rating of 1 A

• High forward surge current capability

• Built-in strain relief for reliable automated placement

• High thermal stability for soldering processes

• Guaranteed high-temperature soldering: 250 °C for 10 seconds at terminals

• Robust and durable construction for long service life

• Reliable rectification performance in power circuits

• Suitable for AC-to-DC conversion applications

• Cost-effective solution for general-purpose rectification

• Electrically equivalent to 1N4007 in SMD form

M7 Diode Working in Circuit

In this circuit, the M7 diode (D1) is placed in series with the input power line before the voltage regulation stage. Its main role here is reverse-polarity protection. When the input power is connected correctly, the M7 diode becomes forward-biased and allows current to flow from the power input (PWRIN) to the VIN node. This ensures that the rest of the circuit receives power safely.

If the input power is connected with the wrong polarity, the M7 diode becomes reverse-biased and blocks current flow completely. This prevents reverse voltage from reaching sensitive components such as the voltage regulators (MC33269) and capacitors. Without this diode, a reversed power connection could damage or destroy the regulator ICs and other downstream parts.

The capacitor connected after the M7 diode helps smooth the input voltage by filtering noise and short voltage dips. Together, the M7 diode and input capacitor create a simple but effective protection and conditioning stage. Overall, the M7 diode works as a one-way electrical gate, ensuring correct current direction, protecting the circuit, and improving reliability during power connection and operation.