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BRX46

Silicon Controlled Rectifiers

Motorola => Freescale 

BRX44 thru BRX47 BRX49

THERMAL CHARACTERISTICS

Characteristic

Symbol

Thermal Resistance, Junction to Case

Thermal Resistance, Junction to Ambient

RθJC

RθJA

ELECTRICAL CHARACTERISTICS (TC = 25°C, RGK = 1000 Ω unless otherwise noted.)

Characteristic

Symbol

Peak Forward Blocking Current

(VD = Rated VDRM @ TC = 125°C)

Peak Reverse Blocking Current

(VR = Rated VRRM @ TC = 125°C)

Forward “On” Voltage(1)

(ITM = 1 A Peak @ TA = 25°C)

Gate Trigger Current (Continuous dc)(2)

(Anode Voltage = 7 Vdc, RL = 100 Ohms)

TC = 25°C

Gate Trigger Voltage (Continuous dc)

(Anode Voltage = 7 Vdc, RL = 100 Ohms)

(Anode Voltage = Rated VDRM, RL = 100 Ohms)

TC = 25°C

TC = –40°C

TC = 125°C

Holding Current

TC = 25°C

(Anode Voltage = 7 Vdc, initiating current = 20 mA)

TC = –40°C

p 1. Forward current applied for 1 ms maximum duration, duty cycle 1%.

2. RGK current is not included in measurement.

IDRM

IRRM

VTM

IGT

VGT

IH

Max

Unit

75

°C/W

200

°C/W

Min

Max

Unit

—

100

µA

—

100

µA

—

1.7

Volts

—

200

µA

—

0.8

Volts

—

1.2

0.1

—

—

5

mA

—

10

130

120

110

100

90

80

70

60

50

0

FIGURE 1 — CURRENT DERATING

(REFERENCE: CASE TEMPERATURE)

α

α = CONDUCTION ANGLE

CASE MEASUREMENT

POINT — CENTER OF

FLAT PORTION

dc

α = 30

60 90 120

180

0.1

0.2

0.3

0.4

0.5

IT(AV), AVERAGE ON-STATE CURRENT (AMP)

FIGURE 2 — CURRENT DERATING

(REFERENCE: AMBIENT TEMPERATURE)

130

α

α = CONDUCTION ANGLE

110

TYPICAL PRINTED

CIRCUIT BOARD

90

MOUNTING

70

50

α = 30

60 90 120

180

30

0

0.1

0.2

0.3

0.4

IT(AV), AVERAGE ON-STATE CURRENT (AMP)

2

Motorola Thyristor Device Data

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