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MCR12DCNT4G
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Product Detailed Parameters
- Description：SCR 800V 12A DPAK
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State：800 V
- Voltage - Gate Trigger (Vgt) (Max)：1 V
- Current - Gate Trigger (Igt) (Max)：20 mA
- Current - Hold (Ih) (Max)：40 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A @ 60Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：TO-252 (DPAK)
- Voltage - On State (Vtm) (Max)：1.9 V
- Current - On State (It (AV)) (Max)：7.8 A
- Current - On State (It (RMS)) (Max)：12:00 AM
- Current - Off State (Max)：10 µA
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Overview
The MCR12DCNT4G is a surface-mount silicon-controlled rectifier (SCR) from Littelfuse, designed for half-wave AC control applications. It features an RMS on-state current of 12 A and offers repetitive peak off-state voltage ratings of 600 V or 800 V. The device operates within a junction temperature range of -40 °C to +125 °C and utilizes a TO-252 (DPAK) package. Key electrical parameters include a gate trigger current of 20 mA maximum at 25 °C, a holding current of 40 mA maximum, and a non-repetitive surge current capability of 100 A. The component is Pb-free compliant.
Feature Summary
- ESD protection rated above 8000 V via Human Body Model and above 400 V via Machine Model
- UL recognized compound meeting flammability rating V-0
- Low-level triggering and holding characteristics suitable for sensitive gate interfacing
- Passivated die surface ensuring reliability and uniformity
Applications
- Motor controls
- Heating controls
- Power supplies
Procurement Notes
Verify the specific voltage variant required, as the MCR12DCN series includes both 600 V and 800 V options. Confirm that the DPAK package dimensions align with the target PCB footprint. Ensure the design accounts for thermal resistance values provided in the datasheet to maintain junction temperatures within the specified operating range during continuous operation.
Selection Notes
Select this component when half-wave AC switching is required in compact surface-mount designs. Consider the 12 A RMS current rating against the expected load profile and conduction angle. Evaluate the gate trigger requirements to ensure compatibility with the driving circuitry, noting the low gate current sensitivity. Verify that the 800 V blocking voltage meets the system's peak reverse voltage demands.
Part Context
This part belongs to the MCR12DCM & MCR12DCN thyristor family from Littelfuse. These devices are specifically engineered for general-purpose half-wave AC control tasks. The MCR12DCNT4G designation indicates the 800 V variant packaged in a lead-free DPAK format, supplied in tape and reel quantities for automated assembly processes.
Replacement Considerations
Direct substitutes within the same family include the MCR12DCMT4G, which shares identical electrical characteristics but is rated for 600 V instead of 800 V. Designers must verify that the lower voltage rating of the M variant does not compromise safety margins in the specific application circuit.
