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
S6006LTP
SCR 600V 6A TO220AB-L
VS-ST280CH04C0
SCR 400V 1130A A-PUK
S4012RTP
SCR 400V 12A TO220
S8025RTP
SCR 800V 25A TO220
2N690A
TO 48 25 AMP SCR
2N5205
TO 48 22 AMP SCR
S6010RTP
SCR 600V 10A TO220AB-R
C147M
SCR 63 AMP 600 V TO-65
S6010VS3TP
SCR 600V 10A TO251
C228A3
ISOLATED 35 AMP SCR T0-48
S4008VS2TP
SCR 400V 8A TO251
NYC0102BLT1G
SCR 200V 250MA SOT23-3
NTE5463
SCR 200V 10A TO220
S8025NRP
SCR 800V 25A TO263
SRR6012R1TP
SCR 600V 12A TO220AB
NTE5513
SCR 600V 5A TO66
S6006RTP
SCR 600V 6A TO220AB-R
S401EAP
SCR 400V 1A TO92
BT151X-500RNQ
SCR 500V TO220-3
NTE5507
SCR 400V 16A TO48