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MCR718T4G
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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)：2.6 A
- Current - On State (It (RMS)) (Max)：4:00 AM
- Current - Off State (Max)：10 µA
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Overview
The MCR718T4G is a silicon-controlled rectifier (SCR) manufactured by Littelfuse, designed for efficient switching in low-current circuits. It features a rated repetitive off-state voltage of 600 V and an on-state RMS current of 4 A. The device operates within a temperature range of -40 °C to +110 °C and utilizes a DPAK-2 (TO-252-2) surface-mount package. Key electrical parameters include a maximum gate trigger current of 25 µA, a holding current of 1 mA, and a forward voltage of 1.3 V.
Feature Summary
- Sensitive gate structure allows direct interfacing with microprocessors using minimal gate current.
- Glass-passivated junctions ensure long-term device reliability and parameter stability.
- Compatible with lead-free reflow soldering processes for modern manufacturing requirements.
Applications
- Capacitive-discharge ignition systems
- Strobe light control circuits
- Fluid level sensors
Procurement Notes
Verify the specific part number against official Littelfuse documentation to confirm exact electrical ratings and package dimensions. Ensure compliance with RoHS directives if required by the application. Cross-reference datasheets for thermal management requirements during installation.
Selection Notes
Select this component based on its 600 V blocking capability and 4 A current handling capacity. Consider the DPAK-2 package for surface-mount applications requiring compact footprints. Verify that the sensitive gate drive characteristics match the available control circuitry capabilities.
Part Context
This SCR belongs to the MCR716 series family from Littelfuse, which offers various voltage ratings within the same package form factor. The series is optimized for precise switching in low-current applications, providing a balance between performance and cost-effectiveness for consumer and industrial electronics.
Replacement Considerations
Check for equivalent SCRs with matching 600 V and 4 A ratings in TO-252-2 packages. Verify gate sensitivity and holding current specifications to ensure functional compatibility without redesigning the drive circuit.
