Thyristors - DIACs, SIDACs
Thyristors - DIACs, SIDACs: Precision Triggering Components for Power Control
Definition & Overview
Thyristors - DIACs (Diode for Alternating Current) and SIDACs (Silicon Diode for Alternating Current) are specialized discrete semiconductor devices designed for precise voltage-triggering applications in AC circuits. As subcategories under Discrete Semiconductor Products, these components act as bidirectional switches, enabling controlled conduction upon reaching a specific breakdown voltage. DIACs are typically used to trigger TRIACs in phase-control circuits, while SIDACs handle higher voltage/current surges, making them ideal for overvoltage protection and ignition systems.
Product Types & Variations
This classification includes:
1. DIACs: Low-power trigger devices with symmetric switching characteristics (e.g., DB3, ST2).
2. SIDACs: High-voltage variants with latching behavior (e.g., Kxxx1A series).
3. Surface-Mount (SMD) & Through-Hole Packages: Options for PCB assembly flexibility.
4. Voltage Ratings: Ranging from 20V to 250V+ for diverse circuit requirements.
Purchasing Recommendations
1. Match Voltage Ratings: Select DIACs/SIDACs with a breakdown voltage (VBO) compatible with your circuit s operational range.
2. Current Handling: Ensure the surge current (IS) meets load demands, especially for SIDACs in high-energy apps.
3. Package Compatibility: Verify footprint dimensions (e.g., DO-35 for DIACs) against your PCB design.
4. Reliability Standards: Opt for AEC-Q200 certified parts for automotive or industrial use.
Why Choose This Category?
DIACs/SIDACs deliver cost-effective, noise-resistant switching solutions for dimmers, motor controls, and protection circuits. Their simplicity and robustness make them indispensable in power electronics. Browse our catalog for industry-leading brands (STMicroelectronics, Littelfuse) and datasheet-backed inventory.
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Categories
K2200S1URP
SIDAC UNI 210-230V 1A DO214AC
BR100-04LLD
DIAC DO-213AA 35V 45V
NTE6419
D-SYDAC 110-125V
K3601G
SIDAC 340-380V 1A DO15
K3002G
SIDAC 270-330V 1A DO15
K2000SRP
SIDAC 190-215V 1A DO214
K2400SHRP
SIDAC 220-250V 1A DO214
K1050SRP
SIDAC 95-113V 1A DO214
K2500EH70RP2
SIDAC 240-280V 1A TO92
K2000E70
SIDAC 190-215V 1A TO92
BS08D-T112
SIDAC 7-9V 1A TO92
K2402G
SIDAC 220-250V 1A DO15
K2400EH70RP3
SIDAC 220-250V 1A TO92
NTE6415
D-SYDAC 45-60V
K1100S1URP
SIDAC 104-118V 1A UNI DO-214AC
K2000E70RP2
SIDAC 190-215V 1A TO92
K2200GH
SIDAC 205-230V 1A DO15
K2400E70
SIDAC 220-250V 1A TO92
K0900GRP
SIDAC 79-97V 1A DO15
K2200SRP
SIDAC 205-230V 1A DO214