UPPER Silicon Controlled Rectifiers (SCR) 1,791

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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

TT162N14KOF-A

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

COMMON ANODE, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

4400 A

UNSPECIFIED

RECTANGULAR

162 A

2

1400 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

260 A

R-XUFM-X7

Not Qualified

1400 V

1000 V/us

200 us

UL RECOGNIZED

TD250N16KOF_TIM

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.4 V

PLASTIC/EPOXY

200 mA

9100 A

UNSPECIFIED

RECTANGULAR

250 A

1

50 mA

1600 V

5

125 Cel

-40 Cel

410 A

R-PUFM-X5

2 V

1600 V

1000 V/us

300 mA

HIGH RELIABILITY

250 us

IEC-61140, IEC-747-6, UL RECOGNIZED

TD210N18KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

5800 A

UNSPECIFIED

RECTANGULAR

210 A

1

50 mA

1800 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X5

1

2 V

Not Qualified

1800 V

UL RECOGNIZED

TT240N16SOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

1.52 V

UNSPECIFIED

145 mA

5200 A

UNSPECIFIED

RECTANGULAR

240 A

2

30 mA

1600 V

7

140 Cel

275 A

R-XUFM-X7

2.5 V

1600 V

1000 V/us

200 mA

370 us

NOT SPECIFIED

NOT SPECIFIED

IEC-61140, IEC-747-6, UL RECOGNIZED

TD425N12KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

250 mA

12500 A

UNSPECIFIED

RECTANGULAR

425 A

1

1200 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

800 A

R-XUFM-X5

1200 V

UL RECOGNIZED

TT142N14KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

UNSPECIFIED

RECTANGULAR

2

1400 V

7

230 A

R-XUFM-X7

Not Qualified

1400 V

UL RECOGNIZED

TT162N12KOF-A

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

COMMON ANODE, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

4400 A

UNSPECIFIED

RECTANGULAR

162 A

2

1200 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

260 A

R-XUFM-X7

Not Qualified

1200 V

1000 V/us

200 us

UL RECOGNIZED

T370N14EOF

Infineon Technologies

SCR

POST/STUD MOUNT

NO

UPPER

SINGLE

ANODE

METAL

250 mA

HIGH CURRENT CABLE

ROUND

1

1400 V

3

650 A

O-MUPM-H3

Not Qualified

1400 V

TT210N18KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

2

1800 V

7

410 A

R-XUFM-X7

1800 V

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TT280N16SOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

1.77 V

UNSPECIFIED

150 mA

9000 A

UNSPECIFIED

RECTANGULAR

280 A

2

30 mA

1600 V

7

130 Cel

-40 Cel

520 A

R-XUFM-X7

2 V

1600 V

1000 V/us

150 mA

200 us

NOT SPECIFIED

NOT SPECIFIED

IEC-61140, IEC-747-6, UL RECOGNIZED

TT104N12KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

120 mA

UNSPECIFIED

RECTANGULAR

2

1200 V

7

140 Cel

-40 Cel

160 A

R-XUFM-X7

1200 V

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TT142N16KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

4100 A

UNSPECIFIED

RECTANGULAR

142 A

2

1600 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

230 A

R-XUFM-X7

Not Qualified

1600 V

NOT SPECIFIED

NOT SPECIFIED

TD150N26KOC

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

2.6 V

UNSPECIFIED

200 mA

4500 A

UNSPECIFIED

RECTANGULAR

223 A

2

50 mA

2600 V

5

125 Cel

-40 Cel

350 A

R-XUFM-X5

2 V

2600 V

500 V/us

300 mA

300 us

NOT SPECIFIED

NOT SPECIFIED

TT210N14KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

5800 A

UNSPECIFIED

RECTANGULAR

210 A

2

50 mA

1400 V

7

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X7

2 V

Not Qualified

1400 V

300 mA

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TT500N16KOFTIMHPSA1

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

IEC-747-6; UL RECOGNIZED

TD215N22KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

1

2200 V

5

410 A

R-XUFM-X5

Not Qualified

2200 V

NOT SPECIFIED

NOT SPECIFIED

TT61N14KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

120 mA

UNSPECIFIED

RECTANGULAR

2

1400 V

7

120 A

R-XUFM-X7

1400 V

NOT SPECIFIED

NOT SPECIFIED

TT61N14KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

120 mA

UNSPECIFIED

RECTANGULAR

2

1400 V

7

120 A

R-XUFM-X7

Not Qualified

1400 V

TD61N12KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

120 mA

UNSPECIFIED

RECTANGULAR

1

1200 V

5

125 Cel

-40 Cel

120 A

R-XUFM-X5

1200 V

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6

STT1900N16P55

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

ANTI-PARALLEL, 2 ELEMENTS

1.32 V

UNSPECIFIED

200 mA

17000 A

UNSPECIFIED

RECTANGULAR

2

130 mA

1600 V

4

125 Cel

-40 Cel

R-XUFM-X4

2 V

1600 V

1000 V/us

300 mA

250 us

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6

TD280N18SOC

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.77 V

UNSPECIFIED

150 mA

9000 A

UNSPECIFIED

RECTANGULAR

280 A

1

30 mA

1800 V

5

130 Cel

-40 Cel

520 A

R-XUFM-X5

2 V

1800 V

1000 V/us

150 mA

200 us

UL RECOGNIZED

STT800N16P55XPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

ANTI-PARALLEL, 2 ELEMENTS

1.56 V

UNSPECIFIED

200 mA

6300 A

UNSPECIFIED

RECTANGULAR

2

45 mA

1600 V

4

125 Cel

-40 Cel

R-XUFM-X4

2 V

1600 V

1000 V/us

300 mA

250 us

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6

T370N10EOF

Infineon Technologies

SCR

POST/STUD MOUNT

NO

UPPER

SINGLE

ANODE

METAL

250 mA

HIGH CURRENT CABLE

ROUND

1

1000 V

3

650 A

O-MUPM-H3

Not Qualified

1000 V

TT820N16KOF_TIM

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

1.27 V

PLASTIC/EPOXY

250 mA

24800 A

UNSPECIFIED

RECTANGULAR

820 A

2

120 mA

1600 V

7

135 Cel

-40 Cel

1050 A

R-PUFM-X7

2 V

1600 V

1000 V/us

300 mA

HIGH RELIABILITY

250 us

IEC-61140, IEC-747-6, UL RECOGNIZED

TD251N18KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

9100 A

UNSPECIFIED

RECTANGULAR

261 A

1

50 mA

1800 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X5

1

2 V

Not Qualified

1800 V

300 mA

UL RECOGNIZED

TT170N16KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

200 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

125 Cel

-40 Cel

350 A

R-PUFM-X7

1600 V

HIGH RELIABILITY

IEC-747-6; UL RECOGNIZED

TT330N12KOC

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

9100 A

UNSPECIFIED

RECTANGULAR

330 A

2

70 mA

1200 V

7

Silicon Controlled Rectifiers

135 Cel

-40 Cel

MATTE TIN

520 A

R-XUFM-X7

2 V

Not Qualified

1200 V

300 mA

e3

TT170N12KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

PLASTIC/EPOXY

200 mA

UNSPECIFIED

RECTANGULAR

2

1200 V

7

125 Cel

-40 Cel

350 A

R-PUFM-X7

1200 V

HIGH RELIABILITY

IEC-747-6; UL RECOGNIZED

TT210N14KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

2

1400 V

7

410 A

R-XUFM-X7

1400 V

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TT330N14KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

2

1400 V

7

MATTE TIN

520 A

R-XUFM-X7

Not Qualified

1400 V

e3

TD250N12KOF-A

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

7000 A

UNSPECIFIED

RECTANGULAR

250 A

1

50 mA

1200 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X5

2 V

Not Qualified

1200 V

1000 V/us

300 mA

250 us

UL RECOGNIZED

TD170N12KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

PLASTIC/EPOXY

200 mA

UNSPECIFIED

RECTANGULAR

1

1200 V

5

125 Cel

-40 Cel

350 A

R-PUFM-X5

1200 V

HIGH RELIABILITY

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TT780N18KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

1.35 V

PLASTIC/EPOXY

250 mA

23500 A

UNSPECIFIED

RECTANGULAR

775 A

2

120 mA

1800 V

7

135 Cel

-40 Cel

1050 A

R-PUFM-X7

2 V

1800 V

1000 V/us

300 mA

HIGH RELIABILITY

250 us

IEC-61140, IEC-747-6, UL RECOGNIZED

TT330N16AOF

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

NOT SPECIFIED

NOT SPECIFIED

TD92N16KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

120 mA

UNSPECIFIED

RECTANGULAR

1

1600 V

5

160 A

R-XUFM-X5

1600 V

NOT SPECIFIED

NOT SPECIFIED

TT310N24KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

250 mA

UNSPECIFIED

RECTANGULAR

2

2400 V

7

125 Cel

-40 Cel

700 A

R-XUFM-X7

2400 V

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TZ800N16KOFHPSA3

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE

ISOLATED

UNSPECIFIED

250 mA

UNSPECIFIED

RECTANGULAR

1

1600 V

4

125 Cel

-40 Cel

1500 A

R-XUFM-X4

1600 V

HIGH RELIABILITY

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TD251N14KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

1

1400 V

5

410 A

R-XUFM-X5

Not Qualified

1400 V

NOT SPECIFIED

NOT SPECIFIED

UL RECOGNIZED

TT175N16SOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

150 mA

UNSPECIFIED

RECTANGULAR

2

1600 V

7

125 Cel

-40 Cel

275 A

R-XUFM-X7

1600 V

NOT SPECIFIED

NOT SPECIFIED

IEC-60747-6; UL RECOGNIZED

TD250N14KOF-A

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

7000 A

UNSPECIFIED

RECTANGULAR

250 A

1

50 mA

1400 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X5

2 V

Not Qualified

1400 V

1000 V/us

300 mA

250 us

UL RECOGNIZED

TD430N22KOFTIMHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

PLASTIC/EPOXY

250 mA

UNSPECIFIED

RECTANGULAR

1

2200 V

5

125 Cel

-40 Cel

800 A

R-PUFM-X5

2200 V

HIGH RELIABILITY

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TD390N16SOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.47 V

UNSPECIFIED

150 mA

9500 A

UNSPECIFIED

RECTANGULAR

380 A

2

70 mA

1600 V

5

125 Cel

-40 Cel

520 A

R-XUFM-X5

2 V

1600 V

1000 V/us

150 mA

430 us

NOT SPECIFIED

NOT SPECIFIED

IEC-61140, IEC-747-6, UL RECOGNIZED

TT600N16KOFHPSA2

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

1050 A

R-PUFM-X7

1600 V

HIGH RELIABILITY

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TD285N14KOFHOSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

UNSPECIFIED

RECTANGULAR

1

1400 V

5

450 A

R-XUFM-X5

Not Qualified

1400 V

TD520N22KOF

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.5 V

PLASTIC/EPOXY

250 mA

18000 A

UNSPECIFIED

RECTANGULAR

520 A

1

100 mA

2200 V

5

125 Cel

-40 Cel

1050 A

R-PUFM-X5

2.2 V

2200 V

1000 V/us

300 mA

HIGH RELIABILITY

250 us

IEC-61140, IEC-747-6, UL RECOGNIZED

SP000096822

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

1.5 V

PLASTIC/EPOXY

200 mA

8000 A

UNSPECIFIED

RECTANGULAR

250 A

1

50 mA

1600 V

5

125 Cel

-40 Cel

410 A

R-PUFM-X5

2 V

1600 V

1000 V/us

300 mA

HIGH RELIABILITY

250 us

IEC-61140, IEC-747-6, UL RECOGNIZED

TT400N24KOFHPSA1

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SERIES CONNECTED, CENTER TAP, 2 ELEMENTS

ISOLATED

UNSPECIFIED

250 mA

UNSPECIFIED

RECTANGULAR

2

2400 V

7

125 Cel

-40 Cel

800 A

R-XUFM-X7

2400 V

NOT SPECIFIED

NOT SPECIFIED

IEC-747-6; UL RECOGNIZED

TD250N16KOF-A

Infineon Technologies

SCR

FLANGE MOUNT

NO

UPPER

SINGLE WITH BUILT-IN DIODE

ISOLATED

UNSPECIFIED

200 mA

7000 A

UNSPECIFIED

RECTANGULAR

250 A

1

50 mA

1600 V

5

Silicon Controlled Rectifiers

125 Cel

-40 Cel

410 A

R-XUFM-X5

2 V

Not Qualified

1600 V

1000 V/us

300 mA

250 us

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.