SK225RDTP - LITTELFUSE - Datasheet.Directory

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

SK225xD Series

Description

Excellent unidirectional switches for phase control

applications such as heating and motor speed controls.

Standard phase control SCRs are triggered with few

milliamperes of current at less than 1.5V potential.

Features & Beneﬁts

Schematic Symbol

Main Features

Symbol Value Unit

IT(RMS) 25 A

VDRM/VRRM 1200 V

IGT 40 mA

Applications

Typical applications are AC solid-state switches, industrial

power tools, line rectiﬁcation 50/60Hz.

Internally constructed isolated packages are offered for

ease of heat sinking with highest isolation voltage.

AK

G

Agency Recognitions

Agency Agency File Number

E71639

• RoHS compliant

• Voltage capability up

to 1200 V

• Surge capability up to

300 A

• Electrically isolated

package “LD -Package”

and UL Recognized for

2500VRMS

RoHS

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

Electrical Characteristics (TJ = 25°C, unless otherwise speciﬁed)

Absolute Maximum Ratings — 25A SCR

Symbol Parameter Test Conditions Value Unit

VDRM /VRRM Repetitive Peak off-state/Reverse Voltage 1200 V

VDSM/VRSM Non-repetitive peak off-state/Reverse voltage 1300 V

IT(RMS) RMS on-state current SK225LD TC=75°C 25 A

SK225RD TC=95°C

IT(AV) Average on-state current SK225LD TC=75°C 16 A

SK225RD TC=95°C

ITSM Peak non-repetitive surge current

single half cycle; f = 50Hz;

TJ (initial) = 25°C 300

A

single half cycle; f = 60Hz;

TJ (initial) = 25°C 360

I2t I2t Value for fusing tp = 8.3 ms 540 A2s

di/dt Critical rate of rise of on-state current 50 A/μs

IGM Peak gate current TJ = 125°C 3 A

PG(AV) Average gate power dissipation TJ = 125°C 1 W

Tstg Storage temperature range -40 to 150 °C

TJOperating junction temperature range -40 to 125 °C

Static Characteristics

Thermal Resistances

Symbol Parameter Value Unit

RƟ(JC) Junction to case (AC) SK225RD 1.0 °C/W

SK225LD 1.9

Symbol Test Conditions Value Unit

VTM IT = 50A; tp = 380μs MAX. 1.6 V

IDRM / IRRM VDRM / VRRM

TJ = 25°C MAX. 10

μA

TJ = 125°C 4 mA

Symbol Test Conditions Value Unit

IGT VD = 12V; RL = 30Ω MAX. 40 mA

VGT MAX. 1.5 V

dv/dt VD = 2/3 VDRM; gate open; TJ = 125°C

MIN.

1000

V/μs

VGD VD = VDRM; RL = 3.3 kΩ; TJ = 125°C MIN. 0.2 V

IHIT = 500mA (initial) MAX. 100 mA

tqIT=0.5A; tp=50µs; dv/dt=5V/µs; di/dt=-30A/µs TYP. 15 μs

tgt IG = 2 x IGT; PW = 15µs; IT = 50A TYP. 3 μs

Notes :

x = package

Notes :

x = package

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

Figure 1: Normalized DC Gate Trigger Current

vs. Junction Temperature

Figure 2: Normalized DC Gate Trigger Voltage

vs. Junction Temperature

0.0

0.5

1.0

1.5

2.0

2.5

-40-15 10 35 60 85 110

Ration of I

GT

/I

GT

(T

J

= 25

o

C)

Junction Temperature (T

J

)-(

o

C)

125

0.0

0.4

0.8

1.2

1.6

2.0

-40-15 10 35 60 85 110

Ration of V

GT

/V

GT

(T

J

= 25

o

C)

Junction Temperature (T

J

)-(

o

C)

Figure 3: Normalized DC Holding Current

vs. Junction Temperature

Figure 4: On-State Current vs. On-State

Voltage (Typical)

0.0

0.4

0.8

1.2

1.6

2.0

-40-15 10 35 60 85 110

Ration of I

H

/I

H

(T

J

= 25

o

C)

Junction Temperature (T

J

)-(

o

C)

125

0

10

20

30

40

50

60

70

80

90

0.70.8 0.91.0 1.11.2 1.31.4 1.51.6 1.71.8 1.9

Instantaneous On-state Voltage (vT) – Volts

Intantaneous On-state Current (iT) – Amps

Figure 5: Power Dissipation (Typical)

vs. RMS On-State Current

Figure 6: Maximum Allowable Case Temperature

vs. RMS On-State Current

RMS On-State Current [

I

T(RMS)

] - (Amps)

0

5

10

15

20

25

30

0510 15 20 25

Average On-State Power Dissipation

[P

D(AV

)] - (Watts)

40

50

60

70

80

90

100

110

120

130

0102030

SK225RD

SK225LD

Maximum Allowable Case Temperature (T

C

) - °C

RMS On-State Current [I

T(RMS)

] - Amps

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180°

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

Figure 7: Maximum Allowable Case Temperature

vs. Average On-State Current

Average On-State Current [I

T(AVE)

] - Amps

Maximum Allowable Case Temperature (T

C

) - °C

40

50

60

70

80

90

100

110

120

130

0246810 12 14 16 18

SK225RD

SK225LD

CURRENT WAVEFORM: Sinusoidal

LOAD: Resistive or Inductive

CONDUCTION ANGLE: 180°

Environmental Speciﬁcations

Test Speciﬁcations and Conditions

AC Blocking JESD22-A108C, 80% VDRM @125°C for 168 hours

Temperature Cycling

MIL-STD-750, M-1051,

100 cycles; -40°C to +150°C;

15-min dwell-time

Temperature/Humidity

EIA / JEDEC, JESD22-A101

168 hours; 100V - DC: 85°C;

85% rel humidity

Resistance to

Solder Heat JESD22-B106C

Solderability J-STD-022, category 3, test A

Design Considerations

Careful selection of the correct component for the

application’s operating parameters and environment will

go a long way toward extending the operating life of the

Thyristor. Good design practice should limit the maximum

continuous current through the main terminals to 75% of

the component rating. Other ways to ensure long life for

a power discrete semiconductor are proper heat sinking

and selection of voltage ratings for worst case conditions.

Overheating, overvoltage (including dv/dt), and surge

currents are the main killers of semiconductors. Correct

mounting, soldering, and forming of the leads also help

protect against component damage.

Peak Surge (Non-repetitive)On-state Current

(ITSM) – Amps

Surge Current Duration - Full Cycles

1 10 100 1000

0

50

100

150

200

250

300

350

One cycle

tp=10ms

Figure 8: Surge Peak On-State Current vs. Number of Cycles

SUPPLY FREQUENCY: 50 Hz Sinusoidal

LOAD: Resistive

RMS On-State Current: [IT(RMS)]: Maximum Rated

Value at Speciﬁed Case Temperature

Notes:

1. Gate control may be lost during and immediately

following surge current interval.

2. Overload may not be repeated until junction

temperature has returned to steady-state

rated value.

Terminal Finish 100% Matte Tin-Plated

Body Material UL Recognized compound meeting ﬂammability

rating V-0

Physical Speciﬁcation

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

Dimensions — TO-220AB (RD-Package) — Non-Isolated Mounting Tab Common with Center Lead

Dimension Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 4.40 4.60 0.173 0.181

B 0.61 0.88 0.024 0.035

C 0.46 0.70 0.018 0.028

C2 1.21 1.32 0.048 0.052

C3 2.40 2.72 0.094 0.107

D 8.60 9.70 0.339 0.382

E 9.60 10.4 0.378 0.409

F 6.20 6.60 0.244 0.260

G 2.54 0.1

H 28.0 29.8 1.102 1.173

L1 3.75 0.148

L2 1.14 1.70 0.045 0.067

L3 2.65 2.95 0.104 0.116

V1 45° 45°

A

C2

F

C3

C

E

L3

L1

G

B

L2

D

H

V1

Ø

Max 3.8mm

ANODE

GATE

CATHODE ANODE

Dimensions — TO-220AB (LD-Package) — Isolated Mounting Tab

Note: Maximum torque to

be applied to mounting tab

is 3 in-lbs (0.3Nm).

Note: Maximum torque to

be applied to mounting tab

is 7 in-lbs. (0.8 Nm).

A

C2

F

C3

C

E

L3

L1

G

B

L2

D

H

V1

Ø

Max 3.8mm

ANODE

GATE

CATHODE ANODE

Dimension Millimeters Inches

Min. Typ. Max. Min. Typ. Max.

A 4.40 4.60 0.173 0.181

B 0.61 0.88 0.024 0.035

C 0.46 0.70 0.018 0.028

C2 1.21 1.32 0.048 0.052

C3 2.40 2.72 0.094 0.107

D 8.60 9.70 0.339 0.382

E 9.80 10.4 0.386 0.409

F 6.55 6.95 0.258 0.274

G 2.54 0.1

H 28.0 29.8 1.102 1.173

L1 3.75 0.148

L2 1.14 1.70 0.045 0.067

L3 2.65 2.95 0.104 0.116

V1 45° 45°

Thyristors

25 Amp Standard SCRs

Speciﬁcations are subject to change without notice.

Revised: 07/18/19

Part Numbering System Part Marking System

®

YMMXXX

SK225RD

Date Code Marking

Y:Year Code

MM: Month Code

XXX: Lot Trace Code

SK2 25 TP

DEVICE TYPE

S: SCR

VOLTAGE RATING

K2: 1200V

CURRENT RATING

25: 25A

PACKAGE TYPE

LD: TO-220 Isolated

RD: TO-220 Non-Isolated

PACKAGING TYPE

TP: Tube Pack

LD

Product Selector

Part Number Gate Sensitivity Type Package

SK225LD 40mA Standard SCR TO-220L

SK225RD 40mA Standard SCR TO-220R

Packing Options

Part Number Marking Weight Packing Mode Base Quantity

SK225LDTP SK225LD 2.2g Tube 1000

SK225RDTP SK225RD 2.0g Tube 1000

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