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MCR72-6TG
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Product Detailed Parameters
- Description：SCR 400V 8A TO220AB
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tube
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：200 µA
- Current - Hold (Ih) (Max)：6 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A @ 60Hz
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220AB
- Voltage - On State (Vtm) (Max)：2 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 Littelfuse MCR72-6TG is an 8 Amp Silicon-Controlled Rectifier (SCR) housed in a TO-220AB package. It features a peak repetitive off-state voltage of 400 V and supports an on-state RMS current of 8.0 A at a case temperature of 83°C. The device exhibits a maximum gate trigger current of 200 µA, enabling direct interfacing with integrated circuits. Key electrical parameters include a peak forward on-state voltage of 1.7 V, a holding current of 6.0 mA, and a critical rate-of-rise of off-state voltage of 10 V/µs. Thermal characteristics specify a junction-to-case thermal resistance of 2.2 °C/W.
Feature Summary
- Center gate geometry ensures uniform current density across the silicon structure.
- All diffused and glass-passivated junctions provide parameter uniformity and long-term stability.
- Thermowatt construction offers low thermal resistance for high heat dissipation and durability.
Applications
- Industrial and consumer temperature control systems
- Light and speed control applications
- Process and remote controls
- Capacitive discharge circuits
Procurement Notes
Verify the specific ordering suffix to confirm the package style and compliance status. The 'G' suffix indicates a lead-free package, while the 'T' suffix denotes tape and reel shipping. Confirm that the 400 V blocking rating aligns with the circuit requirements before procurement.
Selection Notes
Select this component when an 8 A SCR with a 400 V blocking capability is required. Ensure the application allows for a case temperature up to 83°C to maintain the rated RMS current. Verify that the 200 µA maximum gate trigger current is compatible with the driving logic levels available in the design.
Part Context
This part belongs to the MCR72 series of 8 Amp SCRs from Littelfuse. The series includes variants with different voltage ratings, specifically the MCR72-3 for 100 V and the MCR72-8 for 600 V. All variants share the same physical package and core electrical performance characteristics regarding current handling and thermal resistance.
Replacement Considerations
Compatible substitutes within the same family include the MCR72-3G and MCR72-8G. These parts share identical pinouts and mechanical dimensions but differ in their peak repetitive off-state voltage ratings of 100 V and 600 V, respectively.
