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MCR218-4G
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Product Detailed Parameters
- Description：SCR 200V 8A TO220AB
- Series：-
- Mfr：Littelfuse Inc.
- Package：Box
- Voltage - Off State：200 V
- Voltage - Gate Trigger (Vgt) (Max)：1.5 V
- Current - Gate Trigger (Igt) (Max)：25 mA
- Current - Hold (Ih) (Max)：30 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：100A @ 60Hz
- SCR Type：Standard Recovery
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Through Hole
- Package / Case：TO-220-3
- Supplier Device Package：TO-220AB
- Voltage - On State (Vtm) (Max)：1.8 V
- Current - On State (It (AV)) (Max)：-
- Current - On State (It (RMS)) (Max)：8:00 AM
- Current - Off State (Max)：10 µA
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Overview
The Littelfuse MCR218-4G is a 5 x 20 mm glass tube fuse belonging to the 218 series. It features a 4A rated current and a 250V AC voltage rating. The component utilizes a Time-Delay (T) characteristic, designed to withstand temporary inrush currents while providing protection against sustained overloads. Certified under UL, VDE, CSA, CE, CCC, SEMKO, and K-MARK standards, it operates within a temperature range of -55°C to 125°C.
Feature Summary
- Time-delay response for inrush current tolerance
- Glass body construction with metal end caps
- Global regulatory compliance across multiple regions
Applications
- General industrial equipment circuit protection
- Consumer appliance overload safeguarding
- Power supply input stage protection
Procurement Notes
Verify the specific ordering suffix against the manufacturer's official documentation to ensure the correct physical dimensions and certification marks are obtained. Confirm that the ambient operating conditions do not exceed the specified thermal limits for the glass enclosure material during installation.
Selection Notes
Select this component when a time-delay characteristic is required to prevent nuisance tripping from startup surges. Ensure the circuit's prospective fault current remains below the fuse's interrupting rating. Verify that the physical space accommodates the 5mm diameter and 20mm length constraints of the standard cartridge form factor.
Part Context
This part belongs to the Littelfuse 218 series of general-purpose fuses. The series provides standardized dimensions for easy integration into existing fuse holders. The 218 series is widely recognized for its reliability in protecting sensitive electronic components from damage caused by excessive current flow in various commercial and industrial applications.
Replacement Considerations
Substitute only with fuses sharing identical 5x20mm dimensions, 4A rating, 250V AC rating, and T-speed characteristic. Verify that any replacement holds equivalent UL and VDE approvals to maintain system compliance and safety ratings.
