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
S4012DRP
SCR 400V 12A TO252
TM8050H-8D3-TR
SCR 800V 80A D3PAK
S402BS1RP
SEN SCR 400V 1.5A 100 A SOT89
NTE5473
SCR 300V 8A TO64
TYN225RG
SCR 200V 25A TO220AB
EC103M1AP
SCR 600V 800MA TO92
MCR100-4G
SCR 200V 800MA TO92-3
SCT812B
SCR 800V 12A TO220C
SRUK208DRP
SCR 1.2KV 8A TO252
S4025LTP
SCR 400V 25A TO220
S6008DS2TP
SCR 600V 8A TO252
2N6403
THYRISTOR SCR 16A 400V TO220AB
BTW68-1200RG
SCR 1.2KV 30A TOP3
VS-ST1200C16K1
SCR 1.6KV 3080A A24
TN1605H-6T
SCR 600V 16A TO220AB
S4040RQTP
SCR 400V 40A TO220AB
P0102DA 5AL3
SCR 400V 800MA TO92-3
SV6020N1RP
SCR 20A 600V HI TEMP TO263
NTE5484
SCR 300V 8A TO64
MCR706AT4G
SCR 400V 4A DPAK