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
VS-30TPS08-M3
SCR 800V 30A TO247AC
VS-ST733C08LFL1
SCR 800V 1900A B-PUK
VS-ST333C08CFM0
SCR 800V 1435A TO200AB
S4008NS2TP
SCR 400V 8A TO263
NTE5527
SCR 400V 25A TO48
S6035JTP
SCR 600V 35A TO218X
S8X5ECSRP
SCR 800V 500MA TO92
2N6505TG
SCR 100V 25A TO220AB
2N3896
TO 48 35 AMP SCR
SK040NTP
SCR 1KV 40A TO263
TN3050H-12GY-TR
SCR 1.2KV 30A D2PAK
NTE5374
SCR-600V 275A HI SPD
S4016NRP
SCR 400V 16A TO263
N2600MC160
SCR 1.6KV 5200A W70
TCR22-8RP
SCR 600V 1.5A TO92
C106B1
SCR 200V 4A TO202
CLA15E1200NPZ-TRL
SCR 1.2KV 33A TO263
S6008RTP
SCR 600V 8A TO220AB-R
S4X8BS1RP
SCR 400V 800MA SOT89
2N4171
TO 64 8 AMP SCR