SST138C-600E vs SST139C-600E
| 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 | 600V 16A TO-220C 4-QUAD TRIAC |
| Package | Cut Tape (CT) | Tape & Reel (TR) |
| Series | 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 | 600 V |
| Voltage - Gate Trigger (Vgt) (Max) | 1.5 V | 1.3 V |
| Current - Gate Trigger (Igt) (Max) | 25 mA | 25 mA |
| Current - On State (It (RMS)) (Max) | 12 A | 16 A |
| Current - Non Rep. Surge 50, 60Hz (Itsm) | 95A @ 50Hz | 140A @ 50Hz |
| Triac Type | Standard | Standard |
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1. 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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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. 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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4. 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.
