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Thyristors - SCRs - Modules

Image Part Number Description / PDF Quantity Rfq
T9G0161003DH

T9G0161003DH

Powerex, Inc.

SCR PHASE CTRL MOD 1600V 1000A

0
MCMA85PD1200TB

MCMA85PD1200TB

Wickmann / Littelfuse

MOD THYRISTOR DUAL 12KV TO-240

0
T690N06TOFXPSA1

T690N06TOFXPSA1

IR (Infineon Technologies)

SCR MODULE 600V 900A DO200AA

0
T4771N28TOFXPSA1

T4771N28TOFXPSA1

IR (Infineon Technologies)

SCR MODULE 2900V 6820A DO200AE

0
TDB6HK95N16LOFHOSA1

TDB6HK95N16LOFHOSA1

IR (Infineon Technologies)

SCR MODULE 1.6KV 75A MODULE

0
MCMA265P1600KA

MCMA265P1600KA

Wickmann / Littelfuse

MOD THYRISTOR DUAL 16KV

3
MCMA140PD1600TB

MCMA140PD1600TB

Wickmann / Littelfuse

MOD THYRISTOR DUAL 16KV TO-240

35504
MCC56-14IO1

MCC56-14IO1

Wickmann / Littelfuse

BIPOLAR MODULE - THYRISTOR TO-2

360
TT162N16KOFKHPSA1

TT162N16KOFKHPSA1

IR (Infineon Technologies)

SCR MODULE 1.6KV 260A MODULE

0
T2480N26TOFVTXPSA1

T2480N26TOFVTXPSA1

IR (Infineon Technologies)

SCR MODULE 2800V 5100A DO200AE

0
TDB6HK360N16PBOSA1

TDB6HK360N16PBOSA1

IR (Infineon Technologies)

THYRISTOR MODULE VDRM 1600V 70A

0
TTB6C165N16LOFHOSA1

TTB6C165N16LOFHOSA1

IR (Infineon Technologies)

TTB6C165 - BRIDGE RECTIFIER & AC

136
M252571

M252571

Sensata Technologies – Crydom

MODULE PWR 25A 300V SCR CENTR CC

0
F18107SD1200

F18107SD1200

Sensata Technologies – Crydom

MODULE SCR/DIODE 105A 480VAC

0
TD390N18SOFHPSA1

TD390N18SOFHPSA1

IR (Infineon Technologies)

TD390N18 - THYRISTOR / DIODE MOD

0
TT500N14KOFHPSA2

TT500N14KOFHPSA2

IR (Infineon Technologies)

SCR MODULE 1.4KV 900A MODULE

0
T542-YEB

T542-YEB

Sensata Technologies – Crydom

MODULE POWER

0
T9G0141203DH

T9G0141203DH

Powerex, Inc.

SCR PHASE CTRL MOD 1400V 1200A

0
B514FSE-2T

B514FSE-2T

Sensata Technologies – Crydom

MOD DIODE SCR 25A 480VAC .250"QC

0
TT122N22KOFHPSA1

TT122N22KOFHPSA1

IR (Infineon Technologies)

SCR MODULE 2.2KV 160A MODULE

0

Thyristors - SCRs - Modules

1. Overview

Silicon Controlled Rectifiers (SCRs) are four-layer (PNPN) semiconductor devices that act as controlled switches for high-power applications. As key members of the thyristor family, SCR modules enable precise control of electrical power in industrial systems. Their ability to handle high voltages (>6000V) and currents (>5000A) makes them indispensable in power electronics, particularly for AC/DC conversion, motor speed control, and load management systems.

2. Main Types and Functional Classification

TypeFunctional CharacteristicsApplication Examples
Single-phase SCR ModuleCompact design with integrated snubber circuitrySingle-phase motor controllers, heating systems
Three-phase SCR Module6-pack configuration for 3-phase power controlVariable frequency drives, industrial furnaces
Reverse-Conducting SCR (RC-SCR)Integrated freewheeling diode for inductive loadsTraction converters, welding equipment
Light-Triggered SCR (LTSCR)Optical gate activation for high-noise environmentsHigh-voltage DC transmission systems
SCR Power Stack ModuleMulti-chip parallel configuration for extreme currentsElectrolysis plants, large motor soft starters

3. Structure and Composition

Typical SCR module construction includes:

  • Die-level PNPN junction semiconductor (silicon base)
  • DBC (Direct Bonded Copper) substrate for thermal management
  • Gate control circuit with trigger transformer isolation
  • Press-pack or soldered housing with IP54 protection rating
  • Dielectric cooling interface ( silicone pad or phase-change material)

Advanced modules integrate temperature sensors and MOV-based overvoltage protection.

4. Key Technical Specifications

ParameterTypical RangeImportance
Rated Repetitive Peak Voltage (VRRM)600V - 6500VDetermines maximum operating voltage
Rated Average On-state Current (ITAV)25A - 3000ADefines continuous load capacity
Gate Trigger Current (IGT)50 A - 50mAAffects control circuit design
dv/dt Capability10-500 V/ sIndicates immunity to voltage spikes
Thermal Resistance (Rth)0.01-0.5 K/WImpacts cooling requirements

5. Application Fields

Primary industries utilizing SCR modules:

  • Industrial: Motor drives (cranes, mills), welding machines, heating controllers
  • Energy: HVDC transmission, static VAR compensators, battery charging systems
  • Transportation: Traction converters for trains, EV charging stations
  • Utilities: Smart grid power flow controllers, uninterruptible power supplies

Case Study: 3 MW wind turbine converter using 1700V/1200A SCR modules achieves 98.5% conversion efficiency.

6. Leading Manufacturers and Products

ManufacturerRepresentative ProductKey Features
ABB5SNA 2400K1703001700V/2400A, press-pack design, 50kA short-circuit rating
ON SemiconductorCM400HA-34H1600V/400A, hockey puck package, <2V forward voltage
InfineonB25801-A10471200V/800A, integrated heat sink, RoHS compliant
Mitsubishi ElectricPM100CL1A-1201200V/100A, low inductance package, 150 C operating temp

7. Selection Guidelines

Key considerations:

  1. Derate ITAV by 20-30% for safety margin
  2. Select VRRM 1.5 system peak voltage
  3. Match gate drive circuit to IGT specifications
  4. Consider thermal interface material (TIM) performance
  5. Verify short-circuit withstand capability

Recommend consulting manufacturer's SOA (Safe Operating Area) curves for critical applications.

Industry Trends

Emerging developments:

  • SiC-based SCR prototypes enabling 3 higher switching frequencies
  • Smart power modules with embedded current/voltage sensors
  • Double-sided cooling packages reducing thermal resistance by 40%
  • Grid-forming SCR systems for renewable energy integration
  • Lead-free packaging compliant with REACH regulations
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