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MCR708AT4
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Product Detailed Parameters
- Description：THYRISTOR SCR 4A 600V DPAK
- Series：-
- Mfr：onsemi
- Package：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：-
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
- Package / Case：TO-252-3, DPAK (2 Leads + Tab), SC-63
- Supplier Device Package：DPAK
- Voltage - On State (Vtm) (Max)：-
- Current - On State (It (AV)) (Max)：1.6 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：-
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Overview
The MCR708AT4 is a sensitive gate silicon controlled rectifier (SCR) from the MCR703A series, manufactured by onsemi. It features a reverse blocking thyristor design in a DPAK surface mount package (Case 369C). The device supports a peak repetitive off-state voltage of 600 V and an RMS on-state current of 4.0 A. Key electrical characteristics include a maximum holding current of 5 mA at 25°C and a gate trigger voltage of 800 mV. It operates within a junction temperature range of -40°C to +110°C.
Feature Summary
- Sensitive gate architecture enabling low-level triggering for efficient control applications
- Passivated die surface construction ensuring reliability and uniformity under stress
- Surface mount DPAK packaging designed for high-volume consumer electronics assembly
Applications
- Temperature control systems
- Light dimming circuits
- Speed control mechanisms
- Process control equipment
- Remote control interfaces
Procurement Notes
Verify the specific ordering suffix 'T4' corresponds to the tape and reel shipping configuration containing 2500 units per reel. Confirm that the component matches the Case 369C DPAK physical dimensions provided in the datasheet. Ensure the procurement specification aligns with the MCR703A Series documentation rather than generic SCR listings.
Selection Notes
Select this component when a 600 V reverse blocking capability is required alongside a 4.0 A RMS current rating. The sensitive gate characteristic makes it suitable for applications demanding lower gate drive power compared to standard SCRs. Verify thermal management requirements against the specified junction-to-ambient resistance for the intended operating environment.
Part Context
This part belongs to the MCR703A Series of preferred devices from onsemi. The series includes variants with different voltage ratings, specifically the MCR703A (100 V), MCR706A (400 V), and MCR708A (600 V). All share identical current handling capabilities and package styles, differing primarily in their peak repetitive off-state voltage specifications.
Replacement Considerations
The datasheet identifies the MCR708A as the recommended electrical replacement for the legacy C106 SCR. When substituting, ensure the replacement device maintains the same 600 V rating and compatible gate trigger characteristics.
