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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S6004DS2RP
SCR 600V 4A TO252
SV6020L2TP
SCR 20A 600V HI TEMP TO220L
NTE5456
SCR 300V 4A TO202
BT148-400R,127
NOW WEEN - BT148-400R - SILICON
VS-ST700C18L1
SCR 1.8KV 1857A B-PUK
S6X8ES2
SCR 600V 800MA TO92
VS-ST733C08LFM1
SCR 800V 1900A B-PUK
2N1845A
TO 48 16 AMP SCR
SJ6006DS2RP
SCR 600V 6A TO252
VS-ST1230C08K0
SCR 800V 3200A A24
S6035KTP
SCR 600V 35A TO218
S8006RTP
SCR 800V 6A TO220AB-R
SD1A240GW
THYRISTOR DO-15 T&R 4K
EC103DRP
SCR 400V 800MA TO92
SV6025N2RP
SCR 25A 600V HI TEMP TO263
S6X8BSRP
SCR 600V 800MA SOT89
S6006NRP
SCR 600V 6A TO263
VS-ST180C16C0
SCR 1.6KV 660A A-PUK
S6008VTP
SCR 600V 8A TO251
VS-ST173C12CFK0
SCR 1.2KV 610A A-PUK