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MCR708AT4G
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Product Detailed Parameters
- Description：SCR 600V 4A DPAK
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State：600 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：75 µA
- Current - Hold (Ih) (Max)：5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：25A @ 60Hz
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°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)：2.2 V
- Current - On State (It (AV)) (Max)：1.6 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse MCR708AT4G is a Silicon Controlled Rectifier (SCR) designed for high-volume consumer applications. It features a sensitive gate structure and operates within a temperature range of -40°C to 110°C. The device has a maximum on-state voltage (Vtm) of 2.2V. Key electrical ratings include a blocking voltage of 600V, an RMS on-state current of 4A, and a surge current capability of up to 100A. It is housed in a TO-252 (DPAK) package.
Feature Summary
- Sensitive gate design optimized for low-power control circuits
- Robust surge current handling capability for transient protection
- Compact surface-mount packaging for automated assembly
Applications
- Temperature control systems
- Light dimming circuits
- Speed control mechanisms
Procurement Notes
Verify the specific datasheet version when sourcing, as Littelfuse product specifications may evolve. Confirm that the TO-252 package dimensions match your PCB footprint requirements. Ensure the supplier provides RoHS compliance documentation consistent with the component's environmental standards. Cross-reference the part number with authorized distributors to avoid counterfeit components.
Selection Notes
Select this SCR for applications requiring moderate current switching with low drive power. The sensitive gate allows for efficient triggering from microcontrollers or logic gates. Consider the 600V rating for AC line voltage applications. Evaluate thermal management needs based on the 4A continuous current rating and the TO-252 package's thermal resistance characteristics.
Part Context
This component belongs to Littelfuse's Low Power SCR series, which supports voltages up to 1200V. These devices are engineered for embedded electronics and industrial equipment where space constraints and cost efficiency are critical. The series provides reliable switching performance for general-purpose control tasks in consumer appliances.
Replacement Considerations
Check for direct pin-compatible alternatives within the same Littelfuse MCR series. Verify that substitute SCRs meet or exceed the 600V blocking voltage and 4A current ratings. Ensure the replacement maintains the sensitive gate characteristic if low trigger current is required.
