2001 Dec 11

2

Philips Semiconductors

Preliminary specification

Low-voltage variable capacitance diode

BB145C

FEATURES

• Ultra small plastic SMD package

• Very low capacitance spread

• High capacitance ratio

• C1 to C4 ratio: min. 2.39, max. 2.53.

APPLICATIONS

Voltage Controlled Oscillators (VCO).

DESCRIPTION

The BB145C is a variable capacitance diode, fabricated in

planar technology and encapsulated in the SOD523 ultra

small plastic SMD package.

MARKING

PINNING

TYPE NUMBER

MARKING CODE

BB145C

K3

PIN

DESCRIPTION

1

cathode

2

anode

handbook, 2 columns

12



MBK441

Fig.1 Simplified outline (SOD523) and symbol.

Cathode side indicated by a bar.

LIMITING VALUES

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

CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

continuous reverse voltage

−

10

V

peak reverse voltage

in series with a 10 k

Ω resistor

−

12

V

continuous forward current

−

20

mA

storage temperature

−55

+150

°C

operating junction temperature

−55

+150

°C

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

reverse current

−

3nA

−

30

nA

diode series resistance

−

0.6

Ω

diode capacitance

6.4

7.2

pF

2.55

2.85

pF

capacitance ratio

f = 1 MHz

2.39

2.53

C

d1V

()

C

d4V

()

----------------