BU941ZP datasheet(3/11 Pages) STMICROELECTRONICS

Part #	BU941ZP

Description	High voltage ignition coil driver NPN power Darlington transistors

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BU941ZP BU941ZPFI

Electrical characteristics

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Electrical characteristics

(Tcase = 25°C; unless otherwise specified)

Table 4.

Electrical characteristics

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

ICEO

Collector cut-off current

(IB = 0)

VCE = 300 V

Tj = 125 °C

100

0.5

µA

mA

IEBO

Emitter cut-off current

(IC = 0)

VEB = 5 V

20

mA

VClamp

(1)

1.

Pulsed duration = 300 µs, duty cycle

≤ 1.5%.

Clamping voltage

IC = 100 mA

350

500

V

VCE(sat)

(1)

Collector-emitter

saturation voltage

IC = 8 A

IB = 100 mA

IC = 10 A

IB = 250 mA

IC = 12 A

IB = 300 mA

1.8

2

V

VBE(sat)

(1)

Collector-emitter base

voltage

IC = 8 A

IB = 100 mA

IC = 10 A

IB = 250 mA

IC = 12 A

IB = 300 mA

2.2

2.5

2.7

V

hFE

(1)

DC current gain

IC = 5 A

VCE = 10 V

300

Functional test

VCC = 24 V L = 7 mH

Figure 13.

10

A

ts

tf

Inductive load

Storage time

Fall time

VCC = 12 V

L = 7 mH

VBE(off) = 0 V

RBE = 47 Ω

VClamp = 300 V IC = 7 A

IB1 = 70 mA

15

0.5

µs

VF

Diode forward voltage

IF = 10 A

2.5

V

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