SST12B-800CW vs SST12A-800BW
| Part Number |
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| Category | Thyristors - TRIACs | Thyristors - TRIACs |
| Manufacturer | SMC Diode Solutions | SMC Diode Solutions |
| Description | 800V 12A PACKAGE TO-220B 3-QUADR | 800V 12A PACKAGE TO-220A 3-QUADR |
| Package | -Reel® | Bulk |
| Series | SST12 | 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-220B | TO-220AIns |
| Configuration | Single | Single |
| Current - Hold (Ih) (Max) | 40 mA | 60 mA |
| Voltage - Off State | 800 V | 800 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.3 V | 1.3 V |
| Current - Gate Trigger (Igt) (Max) | 35 mA | 50 mA |
| Current - On State (It (RMS)) (Max) | 12 A | 12 A |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 120A @ 50Hz | 120A @ 50Hz |
| Triac Type | Standard | Standard |
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1. What are the limitations of TRIACs?
TRIACs are less efficient for high-power or complex control systems due to asymmetric triggering and potential noise issues. They are more suited to low-to-medium power applications.
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2. 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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3. Why are TRIACs preferred in household electronics?
TRIACs are compact, cost-effective, and capable of handling bidirectional current, making them ideal for small, lightweight, and reliable household devices.
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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.
