Thyristors - SCRs
Thyristors - SCRs: Precision Power Control Components
Definition & Core Functionality
Thyristors - Silicon Controlled Rectifiers (SCRs) are critical semiconductor devices within the Discrete Semiconductor Products category, designed for high-efficiency power control in AC/DC circuits. As solid-state switches, SCRs excel in regulating high-voltage/high-current applications by triggering conduction with a gate signal and maintaining it until current drops below a threshold. Their unidirectional current flow makes them ideal for rectification, phase control, and surge protection in industrial and consumer electronics.
Key Types & Applications
1. Standard SCRs: General-purpose modules for motor controls, lighting systems, and power supplies.
2. Sensitive Gate SCRs: Low-trigger-current variants for precision circuits like medical equipment.
3. Phase-Control SCRs: Optimized for timing-dependent applications (e.g., dimmers, inverters).
4. High-Temperature SCRs: Robust designs for automotive/aviation systems.
Purchasing Recommendations
- Voltage/Current Ratings: Match device specs (e.g., VDRM, IT(RMS)) to operational demands, factoring in 20-30% overhead for safety.
- Gate Sensitivity: Select lower trigger currents (IGT) for low-power circuits; higher IGT ensures noise immunity in industrial settings.
- Packaging: TO-220/TO-263 packages balance heat dissipation and PCB space.
- Compliance: Prioritize UL/IEC-certified SCRs for regulated industries.
Why Choose SCRs?
SCRs offer unmatched reliability in harsh environments (e.g., temperature fluctuations, electrical noise), reducing maintenance costs versus mechanical switches. Their longevity (>100,000 cycles) and fast switching ( s-range) make them a cost-effective solution for energy-efficient designs.
Note: Pair with heat sinks for >5A applications to maximize lifespan.
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Categories
S4X8ESAP
SCR 400V 800MA TO92
S6016NRP
SCR 600V 16A TO263
S4012VTP
SCR 400V 12A TO251AA
NYC228STT1G
SCR 600V 1.5A SOT223
NTE5486
SCR 500V 8A TO64
VS-22RIA40
SCR 400V 35A TO208AA
EC103M2AP
SCR 600V 800MA TO92
MCR218-6G
SCR 400V 8A TO220AB
C106MG
SCR 600V 4A TO225AA
VS-ST330C16L0
SCR 1.6KV 1230A TO200AB
5P6J-Z-E1-AZ
SILICON CONTROLLED RECTIFIER
NTE5462
SCR 100V 10A TO220
TN1625-1000G-TR
SCR 1KV 16A D2PAK
2N1775
TO64 8 AMP SCR
VS-30TPS16-M3
SCR 1.6KV 30A TO247AC
TN2540-600G-TR
SCR 600V 25A D2PAK
2N6403TG
SCR 400V 16A TO220AB
2N6509G
SCR 800V 25A TO220AB
MCR100-3G
SCR 100V 800MA TO92-3
S6X8BS2RP
SCR 600V 800MA SOT89