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
2N2325A
TO5 1.6 AMP SCR
S4008LS3TP
SCR 400V 8A ITO220AB
22RIA10
SCR THYRISTOR 35 AMP TO 48
NTE5590
SCR 200V 780A TO200AB
S4010NS3RP
SCR 400V 10A TO263
TN4015H-6G-TR
SCR 600V 40A D2PAK
SV6020R1QTP
SCR 20A 600V HI TEMP TO220R
S602ESAP
SCR 600V 1.5A TO92
SK055NRP
SCR 1KV 55A TO263
SJ6008D1RP
SCR 600V 8A TO252
C228E2
ISOLATED 35 AMP SCR T0-48
S8X8ES
SCR 800V 800MA TO92
VS-50RIA80
SCR 800V 80A TO208AC
SD1A240G
THYRISTOR DO-15 T&R 4K
2N6173
ISOLATED STUD TO48 35 AMP SCR
MCR25MG
SCR 600V 25A TO220AB
S8016NTP
SCR 800V 16A TO263
S4040NQRP
SCR 400V 40A TO263
MCR265-006-MO
SILICON CONTROLLED RECTIFIERS
TN2540-800G-TR
SCR 800V 25A D2PAK