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EC103M3
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Product Detailed Parameters
- Description：SCR 600V 800MA TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Voltage - Off State：600 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：500 µA
- Current - Hold (Ih) (Max)：8 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：16A, 20A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C (TJ)
- Mounting Type：Through Hole
- Package / Case：TO-226-3, TO-92-3 (TO-226AA)
- Supplier Device Package：TO-92
- Voltage - On State (Vtm) (Max)：1.7 V
- Current - On State (It (AV)) (Max)：510 mA
- Current - On State (It (RMS)) (Max)：800 mA
- Current - Off State (Max)：1 µA
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Overview
The Littelfuse EC103M3 is a sensitive gate Silicon Controlled Rectifier (SCR) with a 600 V repetitive peak off-state voltage rating. It supports an RMS on-state current of 0.8 A and features a maximum DC gate trigger current of 500 µA. The device utilizes a non-isolated TO-92 package for through-hole mounting. Key electrical parameters include a peak on-state voltage of 1.7 V, a holding current of 0.8 mA, and a peak one-cycle forward surge current of 50 A. It operates within a junction temperature range of -65 °C to +110 °C.
Feature Summary
- Glass-passivated junctions provide long-term reliability and parameter stability against contamination.
- Sensitive gate architecture enables reliable triggering with low gate currents down to 500 µA.
- Non-isolated TO-92 package allows for cost-effective assembly and convenient PCB integration.
Applications
- Half-wave unidirectional rectification in AC power control circuits
- Gate triggering for larger thyristor or triac devices
- Lighting control systems requiring low-power switching
Procurement Notes
Verify the specific ordering suffix and manufacturer part number against official Littelfuse documentation before procurement. Confirm that the required package type and electrical ratings match the design specifications. Ensure compliance with RoHS directives if applicable to the target application environment.
Selection Notes
Select this component when a 600 V blocking capability and 0.8 A continuous current handling are required. The high gate sensitivity makes it suitable for microcontroller-driven applications where minimal drive current is available. Consider thermal derating curves for operation above 25 °C case temperature.
Part Context
This device belongs to the Teccor line of sensitive SCRs manufactured by Littelfuse. It complements the broader portfolio of power SCRs by offering lower current ratings with enhanced gate sensitivity. The product line includes various voltage and current combinations packaged in TO-92, TO-202, and surface-mount formats.
Replacement Considerations
EC103D3 serves as a substitute for lower voltage requirements (400 V). EC103B3 is an alternative for 200 V applications. Cross-reference IT(RMS), VDRM, and IGT specifications when evaluating equivalent parts from other manufacturers.
FAQ
What is the maximum DC gate trigger current for the EC103M3?
The maximum DC gate trigger current (IGT) is 500 µA at a case temperature of 25 °C.
Is the EC103M3 electrically isolated?
No, the EC103M3 is a non-isolated device. Electrically isolated versions are available with different suffixes in the same product family.
What is the peak one-cycle forward surge current rating?
The peak one-cycle forward surge current (ITSM) is rated at 50 A for the EC103M3.
