Overview
The MCR25NG is a Silicon Controlled Rectifier (SCR) manufactured by Littelfuse Inc., designed for various control applications. This component is part of Littelfuse's extensive range of power semiconductors and control ICs, catering to the needs of industrial, automotive, and electrical industries. The MCR25NG is particularly suited for half-wave AC control applications such as motor controls, heating controls, and power supplies.
Key Specifications
| Specification | Value | Unit |
|---|---|---|
| Peak Repetitive Off-State Voltage (VDRM) | 800 | V |
| Peak Repetitive Off-State Voltage (VRRM) | 800 | V |
| On-State RMS Current (IT(RMS)) | 25 | A |
| Peak Non-Repetitive Surge Current (ITSM) | 300 | A |
| Forward Peak Gate Power (PGM) | 20.0 | W |
| Forward Average Gate Power (PGM(AV)) | 0.5 | W |
| Forward Peak Gate Current (IGM) | 2.0 | A |
| Operating Junction Temperature Range | -40 to 125 | °C |
| Storage Temperature Range | -40 to 150 | °C |
| Junction-to-Case Thermal Resistance (RθJC) | 1.5 | °C/W |
| Junction-to-Ambient Thermal Resistance (RθJA) | 62.5 | °C/W |
| Maximum Lead Temperature for Soldering | 260 | °C |
Key Features
- High Blocking Voltage: Up to 800V, making it suitable for high-voltage applications.
- High Surge Current Capability: Can handle up to 300A peak non-repetitive surge current.
- High Immunity to dv/dt: Critical rate of rise of off-state voltage up to 100 V/μs.
- Economical and Reliable: TO-220AB package with glass passivated junctions for reliability and uniformity.
- Wide Operating Temperature Range: From -40°C to 125°C, suitable for various environmental conditions.
- Pb-Free Devices: Compliant with environmental regulations.
Applications
The MCR25NG SCR is designed for a variety of applications, including:
- Motor Controls: Used in half-wave AC control circuits for motor speed control and protection.
- Heating Controls: Suitable for heating control systems where precise temperature control is required.
- Power Supplies: Can be used in power supply circuits to regulate and control output.
- Dimmers and Lighting Controls: Used in lighting control systems for dimming and brightness control.
Q & A
- What is the MCR25NG SCR used for?
The MCR25NG SCR is used for half-wave AC control applications such as motor controls, heating controls, power supplies, and dimmers. - What is the peak repetitive off-state voltage of the MCR25NG?
The peak repetitive off-state voltage (VDRM) is 800V. - What is the on-state RMS current rating of the MCR25NG?
The on-state RMS current (IT(RMS)) is 25A. - What is the maximum surge current the MCR25NG can handle?
The MCR25NG can handle up to 300A peak non-repetitive surge current. - What is the operating junction temperature range of the MCR25NG?
The operating junction temperature range is from -40°C to 125°C. - Is the MCR25NG Pb-free?
Yes, the MCR25NG is a Pb-free device. - What package type is the MCR25NG available in?
The MCR25NG is available in the TO-220AB package. - What are the thermal resistance values for the MCR25NG?
The junction-to-case thermal resistance (RθJC) is 1.5°C/W, and the junction-to-ambient thermal resistance (RθJA) is 62.5°C/W. - What is the maximum lead temperature for soldering the MCR25NG?
The maximum lead temperature for soldering is 260°C. - Where can I find detailed specifications and datasheets for the MCR25NG?
Detailed specifications and datasheets can be found on the Littelfuse website or through authorized distributors like X-ON Electronics and Chipworker Electronics.
