NO Silicon Controlled Rectifiers (SCR) 539

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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

S6006VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

THROUGH-HOLE

RECTANGULAR

6 A

1

.5 mA

600 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSIP-T3

1.5 V

Not Qualified

600 V

225 V/us

30 mA

TO-251AA

e3

40

260

S6010LS3TP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

.5 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.25 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

.8 V

Not Qualified

600 V

225 V/us

8 mA

TO-220AB

e3

40

260

UL RECOGNIZED

S6010RS3TP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.5 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.25 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

.8 V

Not Qualified

600 V

225 V/us

8 mA

TO-220AB

e3

40

260

S6010RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.5 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

600 V

225 V/us

30 mA

TO-220AB

e3

40

260

S6010VS2TP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.2 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.25 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSIP-T3

.8 V

Not Qualified

600 V

225 V/us

6 mA

TO-251AA

e3

40

260

S6010VS3TP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

.5 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.25 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSIP-T3

.8 V

Not Qualified

600 V

225 V/us

8 mA

TO-251AA

e3

40

260

S6010VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.5 mA

600 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSIP-T3

1.5 V

Not Qualified

600 V

225 V/us

30 mA

TO-251AA

e3

40

260

S6035JTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

40 mA

500 A

SOLDER LUG

RECTANGULAR

1

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

35 A

R-PSFM-D3

1.5 V

Not Qualified

600 V

325 V/us

50 mA

TO-218

e3

40

260

UL RECOGNIZED

S6065JTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

950 A

SOLDER LUG

RECTANGULAR

41 A

1

3 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

65 A

R-PSFM-D3

2 V

Not Qualified

600 V

500 V/us

80 mA

TO-218

e3

40

260

UL RECOGNIZED

S6070WTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

50 mA

950 A

SOLDER LUG

RECTANGULAR

45 A

1

3 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

70 A

R-PSFM-D3

2 V

Not Qualified

600 V

500 V/us

80 mA

TO-218

e3

40

260

S8006RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

THROUGH-HOLE

RECTANGULAR

6 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-220AB

e3

40

260

S8006R

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

THROUGH-HOLE

RECTANGULAR

3.8 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

Matte Tin (Sn)

6 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-220AB

e3

40

260

S8006VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

THROUGH-HOLE

RECTANGULAR

6 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSIP-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-251AA

e3

40

260

S8010LTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-220AB

e3

40

260

UL RECOGNIZED

S8010RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-220AB

e3

40

260

S8010VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

.5 mA

800 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSIP-T3

1.5 V

Not Qualified

800 V

200 V/us

30 mA

TO-251AA

e3

40

260

S8035JTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

40 mA

500 A

SOLDER LUG

RECTANGULAR

1

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

35 A

R-PSFM-D3

1.5 V

Not Qualified

800 V

300 V/us

50 mA

TO-218

e3

40

260

UL RECOGNIZED

S8035KTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

40 mA

500 A

THROUGH-HOLE

RECTANGULAR

1

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

35 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

300 V/us

50 mA

TO-218AC

e3

40

260

UL RECOGNIZED

S8065JTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

950 A

SOLDER LUG

RECTANGULAR

41 A

1

5 mA

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

65 A

R-PSFM-D3

2 V

Not Qualified

800 V

475 V/us

80 mA

TO-218

e3

40

260

UL RECOGNIZED

S8070WTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

50 mA

950 A

SOLDER LUG

RECTANGULAR

45 A

1

5 mA

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

70 A

R-PSFM-D3

2 V

Not Qualified

800 V

475 V/us

80 mA

TO-218

e3

40

260

SK006LTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

Matte Tin (Sn)

6 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-220AB

e3

40

260

UL RECOGNIZED

SK006RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-220AB

e3

40

260

SK006R

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

3.8 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

Matte Tin (Sn)

6 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-220AB

e3

40

260

SK006VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

MATTE TIN

6 A

R-PSIP-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-251AA

e3

40

260

SK010LTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-220AB

e3

40

260

UL RECOGNIZED

SK010RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-220AB

e3

40

260

SK010VTP

Littelfuse

SCR

IN-LINE

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

100 A

THROUGH-HOLE

RECTANGULAR

6.4 A

1

3 mA

1000 V

3

Silicon Controlled Rectifiers

100 Cel

-40 Cel

MATTE TIN

10 A

R-PSIP-T3

1.5 V

Not Qualified

1000 V

100 V/us

30 mA

TO-251AA

e3

40

260

SK035KTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

40 mA

500 A

THROUGH-HOLE

RECTANGULAR

1

1000 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

35 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

200 V/us

50 mA

TO-218AC

e3

40

260

UL RECOGNIZED

SK065KTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

50 mA

950 A

THROUGH-HOLE

RECTANGULAR

41 A

1

5 mA

1000 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

65 A

R-PSFM-T3

2 V

Not Qualified

1000 V

250 V/us

80 mA

TO-218AC

e3

40

260

UL RECOGNIZED

BTW69-800RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ISOLATED

PLASTIC/EPOXY

80 mA

610 A

THROUGH-HOLE

RECTANGULAR

32 A

1

200 mA

800 V

20 uA

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

50 A

R-PSFM-T3

1.5 V

Not Qualified

800 V

250 V/us

150 mA

100 us

e3

UL RECOGNIZED

2N5062G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.51 A

1

.05 mA

100 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1.2 V

Not Qualified

100 V

10 mA

30 us

TO-92

e1

260

MCR100-6RLRMG

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.8 A

1

.1 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1.2 V

Not Qualified

400 V

20 V/us

5 mA

TO-92

e1

260

MCR100-6ZL1G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.8 A

1

.1 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1.2 V

Not Qualified

400 V

20 V/us

5 mA

TO-92

e1

260

MCR100-6G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.8 A

1

.1 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1

.8 V

Not Qualified

400 V

5 mA

TO-92

e1

40

260

MCR12LMG

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

8 mA

100 A

THROUGH-HOLE

RECTANGULAR

12 A

1

2 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN

12 A

R-PSFM-T3

.8 V

Not Qualified

600 V

100 V/us

20 mA

TO-220AB

e3

260

2N5060G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.51 A

1

30 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1.2 V

Not Qualified

30 V

10 mA

SENSITIVE GATE

10 us

TO-92

e1

260

2N5060RLRMG

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.51 A

1

.01 mA

30 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

.8 V

Not Qualified

30 V

5 mA

SENSITIVE GATE

10 us

TO-92

e1

260

2N5064G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.51 A

1

200 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

.8 A

O-PBCY-T3

1.2 V

Not Qualified

200 V

10 mA

SENSITIVE GATE

30 us

TO-92

e1

260

2N5064RLRAG

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

10 A

THROUGH-HOLE

ROUND

.51 A

1

.01 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

SENSITIVE GATE

30 us

TO-92

e1

40

260

MCR12LDG

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

8 mA

100 A

THROUGH-HOLE

RECTANGULAR

12 A

1

2 mA

400 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN

12 A

R-PSFM-T3

.8 V

Not Qualified

400 V

100 V/us

20 mA

TO-220AB

e3

260

MCR12LNG

Onsemi

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

8 mA

100 A

THROUGH-HOLE

RECTANGULAR

12 A

1

2 mA

800 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

TIN

12 A

R-PSFM-T3

.8 V

Not Qualified

800 V

100 V/us

20 mA

TO-220AB

e3

260

TYN1006RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

73 A

THROUGH-HOLE

RECTANGULAR

6 A

1

2 mA

1000 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

6 A

R-PSFM-T3

1.5 V

Not Qualified

1000 V

200 V/us

30 mA

70 us

TO-220AB

NOT SPECIFIED

NOT SPECIFIED

TYN410RG

STMicroelectronics

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

15 mA

105 A

THROUGH-HOLE

RECTANGULAR

10 A

1

.01 mA

400 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

10 A

R-PSFM-T3

1.5 V

Not Qualified

400 V

200 V/us

30 mA

70 us

TO-220AB

NOT SPECIFIED

NOT SPECIFIED

S4040RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

40 mA

520 A

THROUGH-HOLE

RECTANGULAR

25 A

1

2 mA

400 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

40 A

R-PSFM-T3

1.5 V

Not Qualified

400 V

550 V/us

60 mA

TO-220AB

e3

40

260

S6040RTP

Littelfuse

SCR

FLANGE MOUNT

NO

SINGLE

SINGLE

ANODE

PLASTIC/EPOXY

40 mA

520 A

THROUGH-HOLE

RECTANGULAR

25 A

1

2 mA

600 V

3

Silicon Controlled Rectifiers

125 Cel

-40 Cel

MATTE TIN

40 A

R-PSFM-T3

1.5 V

Not Qualified

600 V

500 V/us

60 mA

TO-220AB

e3

40

260

MCR22-6G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

15 A

THROUGH-HOLE

ROUND

1.5 A

1

.2 mA

400 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

1.5 A

O-PBCY-T3

.8 V

Not Qualified

400 V

25 V/us

5 mA

40 us

TO-92

e1

260

MCR22-8G

Onsemi

SCR

CYLINDRICAL

NO

BOTTOM

SINGLE

PLASTIC/EPOXY

.2 mA

15 A

THROUGH-HOLE

ROUND

1.5 A

1

.2 mA

600 V

3

Silicon Controlled Rectifiers

110 Cel

-40 Cel

TIN SILVER COPPER

1.5 A

O-PBCY-T3

.8 V

Not Qualified

600 V

25 V/us

5 mA

40 us

TO-92

e1

260

TD240N18SOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.52 V

UNSPECIFIED

145 mA

5200 A

UNSPECIFIED

RECTANGULAR

240 A

1

30 mA

1800 V

5

140 Cel

275 A

R-XUFM-X5

2.5 V

1800 V

1000 V/us

200 mA

370 us

NOT SPECIFIED

NOT SPECIFIED

IEC-61140, IEC-747-6, 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.