SST138C-600E vs SST12B-800CW
| Part Number |
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| Category | Thyristors - TRIACs | Thyristors - TRIACs |
| Manufacturer | SMC Diode Solutions | SMC Diode Solutions |
| Description | 600V 12A PACKAGE TO-220C 4-QUADR | 800V 12A PACKAGE TO-220B 3-QUADR |
| Package | Cut Tape (CT) | -Reel® |
| Series | SST138 | SST12 |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | TO-220-3 | TO-220-3 |
| Supplier Device Package | TO-220C | TO-220B |
| Configuration | Single | Single |
| Current - Hold (Ih) (Max) | 25 mA | 40 mA |
| Voltage - Off State | 600 V | 800 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.5 V | 1.3 V |
| Current - Gate Trigger (Igt) (Max) | 25 mA | 35 mA |
| Current - On State (It (RMS)) (Max) | 12 A | 12 A |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 95A @ 50Hz | 120A @ 50Hz |
| Triac Type | Standard | Standard |
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1. What are the main uses of TRIACs?
TRIACs are commonly used in phase control applications like light dimmers, motor speed controls, and heaters, as well as in domestic appliances where bidirectional AC control is needed.
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2. How can flickering in TRIAC circuits be minimized?
Flickering can be addressed by proper circuit design, including snubber circuits to handle dv/dt issues and filtering to reduce noise and harmonics.
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3. What is the significance of the main terminals (MT1 and MT2) in TRIACs?
The MT1 and MT2 terminals are not interchangeable. Correct configuration is critical for TRIAC operation, as gate current must flow relative to MT2.
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4. What are the key parameters to consider when selecting a TRIAC?
Important factors include voltage and current ratings, dv/dt capability, gate sensitivity, and application-specific requirements like power dissipation and thermal management.
