NO Silicon Controlled Rectifiers (SCR) 2,400+

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Part RoHS Manufacturer Trigger Device Type Package Style (Meter) Surface Mount Terminal Position Configuration Case Connection Maximum On-state Voltage Package Body Material Maximum DC Gate Trigger Current Non Repetitive Peak On-state Current Terminal Form Package Shape Maximum On-state Current No. of Elements Maximum Leakage Current Repetitive Peak Reverse Voltage Maximum Repetitive Peak Off-state Leakage Current No. of Terminals Sub-Category Maximum Operating Temperature Minimum Operating Temperature Terminal Finish Maximum RMS On-state Current JESD-30 Code Moisture Sensitivity Level (MSL) Maximum DC Gate Trigger Voltage Qualification Repetitive Peak Off-state Voltage Minimum Critical Rate of Rise of Off-state Voltage Maximum Holding Current Additional Features Nominal Circuit Commutated Turn-off Time JEDEC-95 Code JESD-609 Code Maximum Time At Peak Reflow Temperature (s) Peak Reflow Temperature (C) Reference Standard

VS-30TPS16-M3

Vishay Intertechnology

SCR

NO

60 mA

300 A

20 A

10 mA

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN COPPER

2.5 V

1600 V

500 V/us

100 mA

110 us

e2

VS-VSKT91/14

Vishay Intertechnology

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

1.73 V

PLASTIC/EPOXY

150 mA

2094 A

UNSPECIFIED

RECTANGULAR

95 A

2

1400 V

15000 uA

7

125 Cel

-40 Cel

210 A

R-PUFM-X7

2.5 V

1400 V

1000 V/us

250 mA

TO-240AA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

X0202NA1BA2

STMicroelectronics

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

25 A

THROUGH-HOLE

ROUND

.8 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

1.25 A

O-PBCY-T3

.8 V

Not Qualified

800 V

10 V/us

5 mA

HIGH RELIABILITY

TO-92

e3

SKKT132/12E

Semikron International

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

4700 A

UNSPECIFIED

RECTANGULAR

130 A

2

40 mA

1200 V

40000 uA

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN/SILVER

220 A

R-XUFM-X7

2 V

Not Qualified

1200 V

1000 V/us

400 mA

HIGH RELIABILITY

150 us

e3/e4

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCR100-4G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.8 A

1

.1 mA

200 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

.8 V

Not Qualified

200 V

5 mA

TO-92

e1

260

TYN640RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

35 mA

480 A

THROUGH-HOLE

RECTANGULAR

40 A

1

4 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

40 A

R-PSFM-T3

1.3 V

Not Qualified

600 V

1000 V/us

75 mA

TO-220AB

e3

2N6404G

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

30 mA

250 A

THROUGH-HOLE

RECTANGULAR

16 A

1

2 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN

16 A

R-PSFM-T3

1.5 V

Not Qualified

600 V

80 mA

35 us

TO-220AB

e3

260

MCR106-6G

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.2 mA

25 A

THROUGH-HOLE

RECTANGULAR

4 A

1

.2 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN

4 A

R-PSFM-T3

1 V

Not Qualified

400 V

10 V/us

5 mA

TO-225AA

e3

260

TYN412RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

1.6 V

15 mA

120 A

12 A

1

3 mA

Silicon Controlled Rectifiers

125 Cel

-45 Cel

12 A

1.5 V

400 V

50 V/us

30 mA

50 us

MCC95-18IO1B

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

2400 A

UNSPECIFIED

RECTANGULAR

116 A

2

15 mA

1800 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

180 A

R-XUFM-X7

1.5 V

Not Qualified

1800 V

200 mA

TO-240AA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCC44-12IO1B

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

100 mA

1200 A

UNSPECIFIED

RECTANGULAR

49 A

2

15 mA

1200 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

80 A

R-XUFM-X7

1.5 V

Not Qualified

1200 V

200 mA

TO-240AA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TT330N16KOFHPSA2

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

520 A

R-XUFM-X7

1600 V

NOT SPECIFIED

NOT SPECIFIED

CS60-16IO1

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

100 mA

1500 A

THROUGH-HOLE

RECTANGULAR

48 A

1

10 mA

1600 V

3

Silicon Controlled Rectifiers

140 Cel

-40 Cel

TIN SILVER COPPER

75 A

R-PSIP-T3

1.6 V

Not Qualified

1600 V

200 mA

e1

IEC-60747

MCC162-16IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

6400 A

UNSPECIFIED

RECTANGULAR

300 A

2

40 mA

1600 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

300 A

R-XUFM-X7

2.6 V

Not Qualified

1600 V

200 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCC56-16IO1B

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

100 mA

1600 A

UNSPECIFIED

RECTANGULAR

60 A

2

15 mA

1600 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

100 A

R-XUFM-X7

1.5 V

Not Qualified

1600 V

200 mA

TO-240AA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TD160N16SOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

145 mA

UNSPECIFIED

RECTANGULAR

1

1600 V

5

125 Cel

-40 Cel

275 A

R-XUFM-X5

1600 V

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TT60N16SOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

100 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

125 Cel

-40 Cel

90 A

R-XUFM-X7

1600 V

NOT SPECIFIED

NOT SPECIFIED

IEC-60747-6; UL RECOGNIZED

VVZ39-08HO7

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

3 PHASE BRIDGE, HALF-CONTROLLED, COMMON CATHODE

ISOLATED

UNSPECIFIED

25 mA

210 A

UNSPECIFIED

RECTANGULAR

16 A

3

5 mA

800 V

8

Silicon Controlled Rectifiers

125 Cel

-40 Cel

25.12 A

R-XUFM-X8

2.5 V

Not Qualified

800 V

50 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCC200-18IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

8640 A

UNSPECIFIED

RECTANGULAR

216 A

2

15 mA

1800 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

340 A

R-XUFM-X7

3 V

Not Qualified

1800 V

150 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCD162-16IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN SERIES DIODE

ISOLATED

UNSPECIFIED

150 mA

6000 A

UNSPECIFIED

RECTANGULAR

181 A

1

1600 V

5

Silicon Controlled Rectifiers

125 Cel

300 A

R-XUFM-X5

Not Qualified

1600 V

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

S6065KTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

950 A

THROUGH-HOLE

RECTANGULAR

41 A

1

3 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

65 A

R-PSFM-T3

2 V

Not Qualified

600 V

500 V/us

80 mA

TO-218AC

e3

40

260

UL RECOGNIZED

TYN612RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.2 mA

146 A

THROUGH-HOLE

RECTANGULAR

8 A

1

2 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

12 A

R-PSFM-T3

1.3 V

Not Qualified

600 V

200 V/us

30 mA

TO-220AB

e3

2N4186

Motorola

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

2 V

METAL

30 mA

100 A

WIRE

ROUND

8 A

1

2 mA

200 V

2000 uA

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

8 A

O-MBCY-W3

1.5 V

Not Qualified

200 V

50 V/us

30 mA

LOW NOISE

15 us

C106D

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.2 mA

20 A

THROUGH-HOLE

RECTANGULAR

4 A

1

.1 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN LEAD

4 A

R-PSFM-T3

.8 V

Not Qualified

400 V

8 V/us

3 mA

SENSITIVE GATE

40 us

TO-225AA

e0

235

MCC56-18IO1B

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

100 mA

1600 A

UNSPECIFIED

RECTANGULAR

60 A

2

15 mA

1800 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

100 A

R-XUFM-X7

1.5 V

Not Qualified

1800 V

200 mA

TO-240AA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCO75-16IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

UNSPECIFIED

RECTANGULAR

1

1600 V

4

150 Cel

-40 Cel

NICKEL

121 A

R-PUFM-X4

Not Qualified

1600 V

MMO90-16IO6

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

ANTI-PARALLEL, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

100 mA

860 A

UNSPECIFIED

RECTANGULAR

41 A

2

20 mA

1600 V

4

Silicon Controlled Rectifiers

150 Cel

-40 Cel

SILVER

65 A

R-PUFM-X4

1.6 V

Not Qualified

1600 V

100 mA

e4

NOT SPECIFIED

NOT SPECIFIED

SF0R3G42

Toshiba

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.3 A

1

.1 mA

400 V

100 uA

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

.45 A

O-PBCY-T3

.8 V

Not Qualified

400 V

TO-92

NOT SPECIFIED

NOT SPECIFIED

VS-VSKT500-16PBF

Vishay Intertechnology

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

200 mA

18700 A

UNSPECIFIED

RECTANGULAR

500 A

2

100 mA

1600 V

100000 uA

7

130 Cel

-40 Cel

785 A

R-PUFM-X7

3 V

1600 V

1000 V/us

500 mA

200 us

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

2N6397

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

30 mA

100 A

THROUGH-HOLE

RECTANGULAR

5 A

1

2 mA

400 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN LEAD

12 A

R-PSFM-T3

2.5 V

Not Qualified

400 V

60 mA

TO-220AB

e0

235

BT151-500C

NXP Semiconductors

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

110 A

THROUGH-HOLE

RECTANGULAR

7.5 A

1

.5 mA

500 V

3

Silicon Controlled Rectifiers

125 Cel

TIN

12 A

R-PSFM-T3

1.5 V

Not Qualified

500 V

50 V/us

20 mA

70 us

TO-220AB

e3

CLA100PD1200NA

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

PLASTIC/EPOXY

50 mA

1620 A

UNSPECIFIED

RECTANGULAR

100 A

1

1200 V

4

Silicon Controlled Rectifiers

150 Cel

-40 Cel

157 A

R-PUFM-X4

1.6 V

Not Qualified

1200 V

100 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

CS8-12IO2

IXYS Corporation

SCR

POST/STUD MOUNT

NO

UPPER

SINGLE

ANODE

METAL

30 mA

250 A

SOLDER LUG

ROUND

25 A

1

3 mA

1200 V

2

Silicon Controlled Rectifiers

125 Cel

-45 Cel

TIN

25 A

O-MUPM-D2

2.5 V

Not Qualified

1200 V

1000 V/us

80 mA

60 us

TO-64

e3

MCC162-18IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

6400 A

UNSPECIFIED

RECTANGULAR

300 A

2

40 mA

1800 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

300 A

R-XUFM-X7

2.6 V

Not Qualified

1800 V

200 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCO100-12IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SINGLE

ISOLATED

PLASTIC/EPOXY

100 mA

UNSPECIFIED

RECTANGULAR

1

1200 V

4

150 Cel

-40 Cel

NICKEL

156 A

R-PUFM-X4

Not Qualified

1200 V

MCO500-16IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SINGLE

ISOLATED

UNSPECIFIED

300 mA

150000 A

UNSPECIFIED

RECTANGULAR

500 A

1

80 mA

1600 V

80000 uA

4

Silicon Controlled Rectifiers

140 Cel

-40 Cel

880 A

R-XUFM-X4

2 V

Not Qualified

1600 V

1000 V/us

300 mA

250 us

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

P162

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

60 mA

SOLDER LUG

RECTANGULAR

2

600 V

4

125 Cel

-40 Cel

28 A

R-PUFM-D4

600 V

SV6050RA2TP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

MAIN TERMINAL 2

1.6 V

PLASTIC/EPOXY

15 mA

550 A

THROUGH-HOLE

RECTANGULAR

31.5 A

1

600 V

5000 uA

3

150 Cel

-40 Cel

50 A

R-PSFM-T3

1.3 V

600 V

1000 V/us

50 mA

TO-220AB

AEC-Q101, MIL-STD-750, UL RECOGNIZED

TT330N16AOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

130 Cel

475 A

R-XUFM-X7

1600 V

TT500N16KOFHPSA2

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

250 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

125 Cel

-40 Cel

900 A

R-PUFM-X7

1600 V

HIGH RELIABILITY

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TTW3C85N16LOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

3 BANKS, ANTI-PARALLEL, 2 ELEMENTS WITH BUILT-IN THERMISTOR

ISOLATED

UNSPECIFIED

150 mA

UNSPECIFIED

RECTANGULAR

6

1600 V

14

75 A

R-XUFM-X14

Not Qualified

1600 V

NOT SPECIFIED

NOT SPECIFIED

2N2575

Motorola

SCR

NO

1.4 V

40 mA

260 A

25 A

5 mA

Silicon Controlled Rectifiers

150 Cel

-65 Cel

3.5 V

100 V

30 V/us

30 us

2N6565

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

ISOLATED

PLASTIC/EPOXY

.2 mA

20 A

THROUGH-HOLE

ROUND

.51 A

1

.1 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

.8 A

O-PBCY-T3

2

.8 V

Not Qualified

400 V

30 V/us

5 mA

HIGH RELIABILITY

50 us

TO-92

e3

40

260

C106M1G

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.2 mA

20 A

THROUGH-HOLE

RECTANGULAR

2.55 A

1

.1 mA

600 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN

4 A

R-PSFM-T3

1 V

Not Qualified

600 V

6 mA

EUROPEAN PART NUMBER

TO-225AA

e3

260

CS23-16IO2

IXYS Corporation

SCR

POST/STUD MOUNT

NO

UPPER

SINGLE

ANODE

METAL

50 mA

450 A

UNSPECIFIED

ROUND

25 A

1

3 mA

1600 V

2

Silicon Controlled Rectifiers

125 Cel

MATTE TIN

50 A

O-MUPM-X2

2.5 V

Not Qualified

1600 V

1000 V/us

100 mA

130 us

TO-208AA

e3

MCC132-16IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

5800 A

UNSPECIFIED

RECTANGULAR

300 A

2

40 mA

1600 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

300 A

R-XUFM-X7

2.6 V

Not Qualified

1600 V

200 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCC162-12IO1

Littelfuse

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

6400 A

UNSPECIFIED

RECTANGULAR

300 A

2

40 mA

1200 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

300 A

R-XUFM-X7

2.6 V

Not Qualified

1200 V

200 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

MCC250-18IO1

IXYS Corporation

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

9600 A

UNSPECIFIED

RECTANGULAR

450 A

2

40 mA

1800 V

7

Silicon Controlled Rectifiers

140 Cel

-40 Cel

450 A

R-XUFM-X7

3 V

Not Qualified

1800 V

150 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

Silicon Controlled Rectifiers (SCR)

Silicon Controlled Rectifiers (SCRs) are semiconductor devices that are used to control the flow of electrical current in high-power applications. They are also known as thyristors, which are a family of devices that includes SCRs, triacs, and diacs.

SCRs consist of four layers of alternating p-type and n-type semiconductor material, forming three p-n junctions. The device has three terminals: the anode (A), the cathode (K), and the gate (G). The SCR is designed to conduct current only in one direction, from the anode to the cathode.

SCRs work by applying a positive voltage to the anode, which causes current to flow into the device. The gate terminal is used to control the flow of current by applying a small voltage pulse to trigger the device. Once triggered, the SCR conducts current until the voltage across the device drops below a certain level, at which point it turns off.

SCRs are commonly used in high-power applications such as motor control, lighting control, and power supplies. They are often used in conjunction with other components such as capacitors, inductors, and diodes to form complete electronic circuits.

Proper selection and use of SCRs are critical to ensure safe and reliable operation of power control circuits. Factors such as the maximum voltage rating, maximum current rating, and operating temperature range should be considered when selecting an SCR for a particular application.