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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TN2015H-6FP
SCR 600V 20A TO220FPAB
2N4169
TO 64 8 AMP SCR
S802TSRP
SCR SENSITIVE 800V 1.5A SOT223
NTE5598
SCR 600V 2.79KA TO200AC
SJ6006VS2TP
SCR 600V 6A TO251
VS-ST333C04LFM0
SCR 400V 1435A TO200AB
SV6012L1TP
SCR 12A 600V HI TEMP TO220L
SK012DRP
SCR 1KV 12A TO252
2N2323A
SCR 1.6 AMP 50 V TO39
X00619MA2AL2
SCR 600V 800MA TO92-3
BT155Z-1200TQ
SCR 1.2KV 79A TO3P
VS-16TTS08STRR-M3
SCR 800V 16A TO263AB
S4016NTP
SCR 400V 16A TO263
S8010VTP
SCR 800V 10A TO251
SJ6006V1TP
SCR 600V 6A TO251
NTE5569
SCR 1.2KV 80A TO65
S8X5ECS2
SCR SEN 800V 0.5A TO-92WB
S8055WTP
SCR 800V 55A TO218X
VS-10TTS08STRR-M3
SCR 800V 10A DPAK
SCT855Z
SCR 800V 55A TO3P