BC490,A

2

Motorola Small–Signal Transistors, FETs and Diodes Device Data

Characteristic

Symbol

Min

Min

Max

Unit

Collector – Emitter Saturation Voltage

(IC = –500 mAdc, IB = –50 mAdc)

(IC = –1.0 Adc, IB = –100 mAdc)

VCE(sat)

—

—

–0.25

–0.5

–0.5

—

Vdc

Base – Emitter Saturation Voltage

(IC = –500 mAdc, IB = –50 mAdc)

(IC = –1.0 Adc, IB = –100 mAdc)

VBE(sat)

—

—

–0.9

–1.0

–1.2

—

Vdc

DYNAMIC CHARACTERISTICS

Current–Gain — Bandwidth Product

(IC = –50 mAdc, VCE = –2.0 Vdc, f = 100 MHz)

fT

—

150

—

MHz

Output Capacitance

(VCB = –10 Vdc, IE = 0, f = 1.0 MHz)

Cob

—

9.0

—

pF

Input Capacitance

(VEB = –0.5 Vdc, IC = 0, f = 1.0 MHz)

Cib

—

110

—

pF

1. Pulse Test: Pulse Width = 300

ms, Duty Cycle 2%.

Figure 1. Switching Time Test Circuits

* Total Shunt Capacitance of Test Jig and Connectors

For PNP Test Circuits, Reverse All Voltage Polarities

5.0

µs

+10 V

0

Vin

5.0

µF

100

100

TURN–ON TIME

–1.0 V

VCC

+40 V

RL

OUTPUT

*CS < 6.0 pF

tr = 3.0 ns

5.0

µs

Vin

5.0

µF

100

100

TURN–OFF TIME

+VBB

VCC

+40 V

RL

OUTPUT

*CS < 6.0 pF

tr = 3.0 ns

RB

RB