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EC103D1
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Product Detailed Parameters
- Description：SCR 400V 800MA TO92
- Series：-
- Mfr：Littelfuse Inc.
- Package：Bulk
- Voltage - Off State：400 V
- Voltage - Gate Trigger (Vgt) (Max)：800 mV
- Current - Gate Trigger (Igt) (Max)：12 µA
- Current - Hold (Ih) (Max)：5 mA
- Current - Non Rep. Surge 50, 60Hz (Itsm)：16A, 20A
- SCR Type：Sensitive Gate
- Operating Temperature：-40°C ~ 110°C
- 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 EC103D1 is a Silicon Controlled Rectifier (SCR) designed for phase control applications. It features a rated repetitive off-state voltage of 400 V and an RMS on-state current of 800 mA. The device utilizes sensitive gate technology, requiring a maximum gate trigger current of 12 uA and a gate trigger voltage of 800 mV. It operates within a temperature range of -40 C to +110 C and is housed in a TO-92 through-hole package.
Feature Summary
- Sensitive gate architecture enabling triggering with microampere currents from sense coils or microprocessors
- Designed as an excellent unidirectional switch for heating and motor speed control circuits
Applications
- Phase control applications
- Heating systems
- Motor speed controls
Procurement Notes
Verify the specific datasheet version and RoHS compliance status directly with Littelfuse before procurement. Confirm that the TO-92 package dimensions match the target PCB layout requirements. Ensure the sensitive gate characteristics align with the driving circuit's output capabilities to prevent false triggering or failure to latch.
Selection Notes
Select this component when low gate drive current is required, such as when interfacing with high-impedance sensors or microprocessor outputs. The 400 V rating suits low-to-medium voltage AC line applications. Consider the 800 mA RMS current limit for load capacity. Verify thermal management needs given the small TO-92 package size for continuous operation.
Part Context
The EC103D1 belongs to the EC103xx series of sensitive gate SCRs manufactured by Littelfuse. This series is characterized by its ability to be triggered by very low gate currents, making it suitable for modern digital control interfaces. The part is distinct from higher power thyristors and focuses on precise switching in lower current scenarios.
Replacement Considerations
Check for direct substitutes within the EC103xx family, such as EC103D175, which shares similar electrical parameters but may have different packaging or lead-free specifications. Verify pinout compatibility and thermal characteristics when considering alternative manufacturers' sensitive gate SCRs.
