2004 Mar 29

2

NXP Semiconductors

Product specification

Low-voltage variable capacitance diode

BB145B

FEATURES

 Ultra small plastic SMD package

 C4: 2.75 pF; ratio: 2.4

 Low series resistance.

APPLICATIONS

 Voltage controlled oscillators (VCO).

DESCRIPTION

The BB145B is a planar technology variable capacitance

diode in a SOD523 (SC-79) package.

PINNING

PIN

DESCRIPTION

1

cathode

2

anode

2

1

sym008

Fig.1

Simplified outline (SOD523; SC-79) and

symbol.

Marking code: Z.

Orientation of marking code as shown.

Cathode side indicated by a bar.

ORDERING INFORMATION

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 60134).

ELECTRICAL CHARACTERISTICS

Tj =25 C unless otherwise specified.

TYPE

NUMBER

PACKAGE

NAME

DESCRIPTION

VERSION

BB145B



plastic surface mounted package; 2 leads

SOD523

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

VR

continuous reverse voltage



6V

VRM

peak reverse voltage

in series with a 10 k

 resistor



8V

IF

continuous forward current



20

mA

Tstg

storage temperature

55

+150

C

Tj

operating junction temperature

55

+150

C

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

IR

reverse current

VR = 6 V; see Fig.3



10

nA

VR =6V; Tj =85 C; see Fig.3



200

nA

rs

diode series resistance

f = 470 MHz; VR =1 V



0.6



Cd

diode capacitance

VR =1V; f=1MHz; seeFigs 2and4

6.4

7.2

pF

VR = 4 V; f = 1 MHz; see Figs 2 and 4

2.55

2.95

pF

capacitance ratio

f = 1 MHz

2.2



C

d1V



C

d4V



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