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.
Filter and sort
Categories
TN1205H-6G-TR
SCR 600V 12A D2PAK
S4012NTP
SCR 400V 12A TO263
NTE5452
SCR 30V 4A TO202
SK012VTP
SCR 1KV 12A TO251
MCR69-2G
SCR 50V 25A TO220AB
MCR69-3G
SCR 100V 25A TO220AB
NTE5411
SCR 30V TO126
NTE5466
SCR 600V 10A TO220
SCR5287RLRE
THY T092 SPECIAL SCR
SV6016R2TP
SCR 16A 600V HI TEMP TO220R
SV6020N2QRP
SCR 20A 600V HI TEMP TO263
NTE5547
SCR 600V 35A TO48
S8008DTP
SCR 800V 8A TO252
2N6394G
SCR 50V 12A TO220AB
TN2010H-6I
SCR 600V 20A TO220AB
S6025NRP
SCR 600V 25A TO263
VS-ST1200C16K0
SCR 1.6KV 3080A A24
SJ6010V1TP
SCR 600V 10A TO251
CR5AS-12#F01
SILICON CONTROLLED RECTIFIER
C228M
35 AMP SCR T0-48