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MCR716T4G
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Product Detailed Parameters
- Description：SCR 400V 4A DPAK
- Series：-
- Mfr：Littelfuse Inc.
- Package：Tape & Reel (TR),Cut Tape (CT)
- Voltage - Off State：400 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)：2.6 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：10 µA
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Overview
The MCR716T4G is a silicon-controlled rectifier (SCR) manufactured by Littelfuse Inc., designed for surface-mount applications in the TO-252 (DPAK) package. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current capability of 4 A. The device is characterized as a sensitive gate SCR, requiring a maximum gate trigger voltage of 800 mV and a maximum gate trigger current of 75 µA for activation. It exhibits a maximum on-state voltage of 2.2 V and a non-repetitive peak surge current rating of 25 A at 60 Hz. The component operates within a junction temperature range of -40°C to +110°C and includes a glass-passivated junction for durability.
Feature Summary
- Sensitive gate architecture enabling direct interfacing with microprocessors via minimal gate current requirements.
- Glass-passivated junction construction ensuring enhanced durability against environmental stressors.
- Surface-mount DPAK packaging optimized for automated assembly and lead-free reflow soldering compatibility.
Applications
- Capacitive-discharge ignition systems
- Strobe light control circuits
- Fluid level sensors
Procurement Notes
Verify the specific ordering suffix to confirm the exact tape-and-reel quantity and packaging configuration, as variations exist between standard reels and cut-tape options. Ensure compliance with RoHS3 directives and REACH SVHC regulations for the intended market. Confirm the manufacturer's standard delivery lead time aligns with project schedules before finalizing procurement orders.
Selection Notes
Select this component when a 400 V blocking voltage and 4 A RMS current handling are required in a compact surface-mount form factor. The sensitive gate specification makes it suitable for low-power control logic interfaces. Verify that the thermal management design supports the specified operating temperature range and that the circuit can handle the 25 A surge current during transient events without exceeding device limits.
Part Context
This part belongs to the MCR716 series of silicon-controlled rectifiers from Littelfuse. It shares the same physical footprint and general electrical characteristics with other variants in the family but is distinguished by its specific 400 V voltage rating and sensitive gate parameters. It serves as a discrete solution for switching applications where space constraints preclude the use of larger axial or module packages.
Replacement Considerations
Direct replacements must match the 400 V VDRM, 4 A It(RMS), and TO-252 package dimensions. Verify that substitute SCRs possess compatible sensitive gate trigger currents (Igt) and voltages (Vgt) to ensure proper firing from existing drive circuits. Check for equivalent surge current ratings and thermal performance characteristics to maintain system reliability.
