DATA  SHEET

Product specification
Supersedes data of April 1992
File under Discrete Semiconductors, SC01

1996 May 03

DISCRETE SEMICONDUCTORS

BB405B
UHF variable capacitance diode

alfpage

M3D050

1996 May 03

2

Philips Semiconductors

Product specification

UHF variable capacitance diode

BB405B

FEATURES

•

Excellent linearity

•

Matched to 3%

•

Hermetically sealed leaded glass
SOD68 (DO-34) package

•

C28: 2 pF; ratio: 8.3

•

Low series resistance.

APPLICATIONS

•

Electronic tuning in UHF television
tuners

•

VCO.

DESCRIPTION

The BB405B is a variable
capacitance diode, fabricated in
planar technology, and encapsulated
in the hermetically sealed leaded
glass SOD68 (DO-34) package.

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

V

R

continuous reverse voltage

-

30

V

I

F

continuous forward current

-

20

mA

T

stg

storage temperature

-

55

+150

°

C

T

j

operating junction temperature

-

55

+100

°

C

Fig.1  Simplified outline (SOD68; DO34) and symbol.

handbook, halfpage

MAM159

k

a

Cathode side indicated by a white band on a black body.

ELECTRICAL CHARACTERISTICS

T

j

= 25

°

C; unless otherwise specified.

Note

1. V

R

 is the value at which C

d

= 9 pF.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

I

R

reverse current

V

R

= 28 V; see Fig.3

-

-

10

nA

V

R

= 28 V; T

j

= 85

°

C; see Fig.3

-

-

200

nA

r

s

diode series resistance

f = 470 MHz; note 1

-

-

0.75

Ω¦

C

d

diode capacitance

V

R

= 1 V; f = 1 MHz; see Figs 2 and 4

-

-

18

pF

V

R

= 3 V; f = 1 MHz; see Figs 2 and 4

-

11

-

pF

V

R

= 28 V; f = 1 MHz; see Figs 2 and 4

1.8

-

2.2

pF

capacitance ratio

f = 1 MHz

7.6

-

-

capacitance matching

V

R

= 0.5 to 28 V

-

-

3

%

C

d 1V

(

)

C

d 28V

(

)

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

C

d

∆

C

d

----------

1996 May 03

3

Philips Semiconductors

Product specification

UHF variable capacitance diode

BB405B

GRAPHICAL DATA

Fig.2  Diode capacitance as a function of reverse voltage; typical values.

f = 1 MHz; T

j

= 25

°

C

.

handbook, full pagewidth

0

20

MBE874

10

2

10

1

10

-

1

4

8

12

16

Cd

(pF)

V

R

 (V)

Fig.3

Reverse current as a function of junction
temperature; maximum values.

handbook, halfpage

100

0

10

MLC816

10

2

10

3

50

IR

(nA)

T   (  C)

j

o

Fig.4

Temperature coefficient of diode
capacitance as a function of
reverse voltage; typical values.

T

j

 = 0 to 85

°

C.

handbook, halfpage

MLC815

1

10

10

2

10

3

10

4

10

5

10

1

(K

-

1

)

V   (V)

R

d

TC

1996 May 03

4

Philips Semiconductors

Product specification

UHF variable capacitance diode

BB405B

PACKAGE OUTLINE

DEFINITIONS

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale.

Data sheet status

Objective specification

This data sheet contains target or goal specifications for product development.

Preliminary specification

This data sheet contains preliminary data; supplementary data may be published later.

Product specification

This data sheet contains final product specifications.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the specification.

Dimensions in mm.

Fig.5  SOD68 (DO-34).

handbook, full pagewidth

1.6

max

25.4 min

25.4 min

3.04
max

0.55
max

MSA212 - 1