SST138C-600E vs SST138C-800E
| 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-220C 4-QUADR |
| Package | Cut Tape (CT) | Tube |
| Series | SST138 | SST138 |
| 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-220C |
| Configuration | Single | Single |
| Current - Hold (Ih) (Max) | 25 mA | 25 mA |
| Voltage - Off State | 600 V | 800 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.5 V | 1.5 V |
| Current - Gate Trigger (Igt) (Max) | 25 mA | 25 mA |
| Current - On State (It (RMS)) (Max) | 12 A | 12 A |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 95A @ 50Hz | 95A @ 50Hz |
| Triac Type | Standard | Standard |
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1. 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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2. What precautions should be taken when using TRIACs with inductive loads?
Inductive loads can cause dv/dt turn-on issues. Adding a snubber circuit or using a zero-crossing detection mechanism can prevent premature triggering.
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3. How does dv/dt affect TRIAC performance?
A high rate of voltage change (dv/dt) across the TRIAC can unintentionally trigger it. Snubber circuits are used to limit dv/dt and ensure reliable operation.
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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.
