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MCR12LDG
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Product Detailed Parameters
- Description：SCR 400V 12A TO220AB
- Series：-
- Mfr：onsemi
- Package：Tube,Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：8 mA
- Current - Hold (Ih) (Max)：20 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A @ 60Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Voltage - On State (Vtm) (Max)：2.2 V
- Current - On State (It (AV)) (Max)：7.6 A
- Current - On State (It (RMS)) (Max)：12:00 AM
- Current - Off State (Max)：10 µA
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Overview
The MCR12LDG is a Silicon Controlled Rectifier (SCR) from onsemi, designed primarily for half-wave AC control applications. It features a reverse blocking thyristor structure with a maximum blocking voltage of 800 Volts and an on-state current rating of 12 Amperes RMS at 80°C. The device offers high surge current capability of 100 Amperes and high immunity to dv/dt, specified as a minimum of 100 V/μsec at 125°C. Packaged in a rugged TO-220AB case with glass passivated junctions for reliability, it includes specified minimum and maximum values for gate trigger current (IGT), gate trigger voltage (VGT), and holding current (IH) to facilitate design integration.
Feature Summary
- Reverse blocking thyristor structure optimized for half-wave AC control
- High surge current capability supporting demanding transient loads
- Glass passivated junctions ensuring uniformity and long-term reliability
- Specified gate trigger parameters for simplified circuit design
Applications
- Motor controls
- Heating controls
- Power supplies
Procurement Notes
Verify the specific suffix 'DG' against the official datasheet to confirm lead-free status and package variant accuracy. Ensure the ordering part number matches the exact electrical specifications required for the target application. Cross-reference the manufacturer's latest documentation to confirm availability and any potential obsolescence notices before finalizing procurement plans.
Selection Notes
Select this component when half-wave AC control is required with up to 800V blocking capability. Consider the 12A RMS rating and 100A surge capacity for load requirements. The TO-220AB package suits applications needing robust thermal dissipation. Verify that the dv/dt immunity meets the circuit's noise environment standards.
Part Context
The MCR12LDG belongs to the MCR12 series of Silicon Controlled Rectifiers manufactured by onsemi. This series is engineered for general-purpose half-wave AC switching tasks. The device utilizes silicon gate technology and is housed in a standard TO-220AB plastic package, providing a balance of performance and cost-effectiveness for industrial and consumer power control designs.
Replacement Considerations
The MCR12M is a documented industry-standard alternative within the same product family. Verify that the replacement part maintains identical voltage, current, and package specifications to ensure functional compatibility without redesigning the host circuit.
