Littelfuse Sxx55x User Manual

Sxx55x Series

K

Teccor® brand Thyristors

55 Amp Standard SCRs

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

t3P)4DPNQMJBOU

t(MBTToQBTTJWBUFE

junctions

t7PMUBHFDBQBCJMJUZVQ

to 1000 V

t4VSHFDBQBCJMJUZVQUP

650 A

Main Features

Symbol Value Unit

I

T(RMS)

V

DRM/VRRM

I

GT

55 A

400 to 1000 V

40 mA

Applications

Typical applications are AC solid-state switches, industrial
power tools, exercise equipment, white goods and
commercial appliances.

Schematic Symbol

A

G

Absolute Maximum Ratings

Symbol Parameter Test Conditions Value Unit

I

T(RMS)

I

T(AV)

I

TSM

I2tI

di/dt Critical rate of rise of on-state current

I

GM

P

G(AV)

T

stg

T

J

RMS on-state current TC = 90°C 55 A

Average on-state current TC = 90°C 35.0 A

Peak non-repetitive surge current

2

t Value for fusing tp = 8.3 ms 1750 A2s

Peak gate current

Average gate power dissipation

single half cycle; f = 50Hz;

T

(initial) = 25°C

J

single half cycle; f = 60Hz;

T

(initial) = 25°C

J

f = 60Hz ; T

T

= 125°C

J

P

= 10µS

W

T

= 125°C

J

= 125°C

J

550

650

175 A/s

4.0 A

0.8 W

Storage temperature range -40 to 150 °C

Operating junction temperature range -40 to 125 °C

A

Sxx55x Series

321

Specifications are subject to change without notice.

©2013 Littelfuse, Inc

Revised: 09/23/13

Teccor® brand Thyristors

55 Amp Standard SCRs

Electrical Characteristics (T

= 25°C, unless otherwise specified)

J

Symbol Test Conditions Value Unit

I

GT

V

GT

dv/dt

VD = 12V; RL = 30 

V

= V

; gate open; TJ = 100°C

D

DRM

400V

600V 600

800V 500

1000V 250

MAX. 40

MIN. 5

MAX. 1.5 V

650

MIN.

400V 550

VD = V

; gate open; TJ = 125°C

DRM

600V 500

800V 475

V

GD

I

H

t

q

t

gt

Note :
(1) I

=2A; tp=50µs; dv/dt=5V/µs; di/dt=-30A/µs

T

VD = V

IG = 2 x IGT; PW = 15µs; IT = 110A TYP. 2.5 s

; RL = 3.3 k; TJ = 125°C MIN. 0.2 V

DRM

IT = 400mA (initial) MAX. 60 mA

(1) MAX. 35 s

Static Characteristics

mA

V/s

Symbol Test Conditions Value Unit

V

TM

IT = 110A; tp = 380s MAX. 1.8 V

TJ = 25°C

o7

800 V 20

10

1000 V 30

o7 1000

I

DRM

/ I

RRM

V

/ V

DRM

RRM

T

= 100°C

J

800V 1500

MAX.

1000V 5000

o7 2000

= 125°C

T

J

800V 3000

Thermal Resistances

Symbol Parameter Value Unit

R

(J-C)

R

(J-A)

Note: xx = voltage

Sxx55R

Junction to case (AC)

Sxx55N
Sxx55W

Sxx55M

Junction to ambient Sxx55R 40 °C/W

0.5
°C/W

0.53

A

Sxx55x Series

322

Specifications are subject to change without notice.

©2013 Littelfuse, Inc

Revised: 09/23/13

Teccor® brand Thyristors

55 Amp Standard SCRs

Figure 1: Normalized DC Gate Trigger Current

vs. Junction Temperature

2.0

1.5

= 25°C)

J

(T

GT

1.0

/ I

GT

0.5

Ratio of I

0.0

-40 -15 10 35 60 85 110

Junction Temperature (TJ) -- (°C)

Figure 3: Normalized DC Holding Current

vs. Junction Temperature

2.0

1.5

= 25°C)

J

(T

H

1.0

/ I

H

Ratio of I

0.5

125

Figure 2: Normalized DC Gate Trigger Voltage

vs. Junction Temperature

2.0

1.5

= 25°C)

J

(T

GT

1.0

/ V

GT

0.5

Ratio of V

0.0

-40 -15 10 35 60 85 110

Junction Temperature (TJ) -- (°C)

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

(Typical)

120

TJ = 25°C

100

80

60

) – Amps

T

(i

40

Instantaneous On-state Current

20

125

0.0

-40 -1 5 10 35 60 85 110

Junction Temperature (TJ) -- (°C)

Figure 5: Power Dissipation (Typical)

vs. RMS On-State Current

60

50

40

30

] - (Watts)

D(AV)

20

[P

10

Average On-State Power Dissipation

0

0 5 10 15 20 25 30 35 40 4550 55

RMS On-State Current [I

Note: xx = voltage

Sxx55x Series

T(RMS)

] - (Amps)

125

0

0.7 0.8 0.9 1.0 1.1 1.2 1.3 1.4 1.5 1.6

Instantaneous On-state Voltage (vT) – Volts

Figure 6: Maximum Allowable Case Temperature

vs. RMS On-State Current

323

130

125

120

115

110

105

100

) - °C

C

95

(T

90

85

80

CURRENT WAVEFORM: Sinusoidal
LOAD: Resistive or Inductive

75

Maximum Allowable Case Temperature

CONDUCTION ANGLE: 180°

70

0 5 10 15 20 25 30 35 40 4550 55 60

RMS On-State Current [I

The "R" or "M" package rating is intended
for high surge condition use only and not
recommended for >50A rms continuous
current use since narrow pin leads depend­ing on lead length can exceed PCB solder
melting temperature. "W" package is
recommended for >50A rms continuous
current requirements.

] - Amps

T(RMS)

Specifications are subject to change without notice.

©2013 Littelfuse, Inc

Revised: 09/23/13