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MCR8SD
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Product Detailed Parameters
- Description：SCR 400V 8A TO220AB
- Series：-
- Mfr：onsemi
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1 V
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：6 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：80A @ 60Hz
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C
- Grade：-
- Qualification：-
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：8:00 AM
- Current - Off State (Max)：10 µA
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Overview
The MCR8SDG is a sensitive gate silicon controlled rectifier designed for half-wave AC control applications. It features blocking voltages up to 800 V and an on-state RMS current rating of 8.0 A at a case temperature of 80°C. The device supports a peak non-repetitive surge current of 80 A and operates within a junction temperature range of -40°C to 110°C. Packaged in a rugged TO-220AB format, it includes glass passivated junctions for reliability.
Feature Summary
- Sensitive gate architecture enables direct triggering by microcontrollers and logic circuits
- High surge current capability provides robustness against transient loads
- Glass passivated junctions ensure uniformity and long-term reliability
- Immunity to dv/dt prevents false triggering during rapid voltage changes
Applications
- Motor controls
- Heating controls
- Power supplies
Procurement Notes
Verify the specific suffix (D, M, or N) to confirm the required blocking voltage rating before ordering. Confirm that the TO-220AB package style matches the thermal management requirements of the target application. Ensure the design accounts for the specified holding and latching currents to maintain stable conduction states under varying load conditions.
Selection Notes
Select this component when high surge tolerance and sensitive gate drive compatibility are required. Evaluate the thermal resistance characteristics to ensure adequate heat dissipation for continuous operation. Consider the minimum and maximum gate trigger specifications to optimize the driving circuit design for reliable switching performance across the full operating temperature range.
Part Context
This part belongs to the MCR8S/D series of reverse blocking thyristors manufactured by onsemi. The series offers multiple voltage ratings through distinct suffixes, allowing designers to choose the appropriate blocking voltage without changing the physical package or pinout configuration.
Replacement Considerations
MCR8SMG, MCR8SNG
FAQ
What is the critical rate of rise of off-state voltage?
The critical rate of rise of off-state voltage is specified as a minimum of 5.0 V/µs at a junction temperature of 110°C.
How does the gate trigger current vary with temperature?
The gate trigger current decreases as the junction temperature increases, ranging from a maximum of 200 µA at 25°C to lower values at elevated temperatures.
What is the maximum lead temperature for soldering?
The maximum lead temperature for soldering purposes is 260°C when applied for 10 seconds at a distance of 1/8 inch from the case.
