BB184
UHF low voltage variable capacitance diode
Rev. 02 — 22 April 2004
Product data sheet
1. Product profile
1.1 General description
The BB184 is a variable capacitance diode, fabricated in planar technology, and
encapsulated in the SOD523 (SC-79) ultra small SMD plastic package.
1.2 Features
s
s
s
s
Very steep CV curve
C
d(1V)
: 14 pF; C
d(10V)
: 2 pF
C
d(1V)
to C
d(10V)
ratio: typical 7
Ultra small SMD plastic package.
1.3 Applications
s
Voltage Controlled Oscillators (VCO)
s
Tuning in low voltage television.
2. Pinning information
Table 1:
Pin
1
2
Discrete pinning
Description
cathode
anode
1
2
Simplified outline
Symbol
sym008
Top view
3. Ordering information
Table 2:
Ordering information
Package
Name
BB184
-
Description
plastic surface mounted package; 2 leads
Version
SOD523
Type number
Philips Semiconductors
BB184
UHF low voltage variable capacitance diode
4. Marking
Table 3:
BB184
Marking
Marking code
A2
Type number
5. Limiting values
Table 4:
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol
V
R
I
F
T
stg
T
j
Parameter
continuous reverse voltage
continuous forward current
storage temperature
operating junction temperature
Conditions
Min
-
-
−55
−55
Max
13
10
+150
+125
Unit
V
mA
°C
°C
6. Characteristics
Table 5:
Electrical characteristics
T
j
= 25
°
C unless otherwise specified.
Symbol
I
R
r
s
C
d
Parameter
reverse current
Conditions
V
R
= 10 V; see
Figure 2
V
R
= 10 V; T
j
= 85
°C;
see
Figure 2
diode series resistance f = 470 MHz; C
d
= 9 pF
diode capacitance
f = 1 MHz; see
Figure 1
and
3
V
R
= 1 V
V
R
= 4 V
V
R
= 10 V
C
d
(
1V
)
------------------
-
C
d
(
10V
)
∆C
d
----------
C
d
capacitance ratio
f = 1 MHz
12.7
-
1.87
6
14
5.5
2
7
15.3
-
2.13
-
pF
pF
pF
Min
-
-
-
Typ
-
-
0.65
Max
10
200
-
Unit
nA
nA
Ω
capacitance matching
V
R
= 1 to 10 V; in a sequence of 5 diodes
(gliding)
-
-
2
%
9397 750 13004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 02 — 22 April 2004
2 of 7
Philips Semiconductors
BB184
UHF low voltage variable capacitance diode
25
C
d
(pF)
20
001aaa643
15
10
5
0
10
−1
1
10
V
R
(V)
10
2
f = 1 MHz; T
j
= 25
°C.
Fig 1. Diode capacitance as a function of reverse voltage; typical values.
10
3
I
R
(nA)
10
2
001aaa657
10
−2
TC
d
(K
-1
)
10
−3
001aaa658
10
10
−4
1
0
20
40
60
80
T
j
(°C)
100
10
−5
10
−1
1
10
V
R
(V)
10
2
Fig 2. Reverse current as a function of junction
temperature; maximum values.
Fig 3. Temperature coefficient of diode capacitance
as a function of reverse voltage; typical values.
9397 750 13004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 02 — 22 April 2004
3 of 7
Philips Semiconductors
BB184
UHF low voltage variable capacitance diode
7. Package outline
Plastic surface mounted package; 2 leads
SOD523
A
c
HE
v
M
A
D
A
0
0.5
scale
1 mm
1
E
bp
2
DIMENSIONS (mm are the original dimensions)
UNIT
mm
A
0.65
0.58
bp
0.34
0.26
c
0.17
0.11
D
1.25
1.15
E
0.85
0.75
HE
1.65
1.55
v
0.1
(1)
Note
1. The marking bar indicates the cathode.
OUTLINE
VERSION
SOD523
REFERENCES
IEC
JEDEC
JEITA
SC-79
EUROPEAN
PROJECTION
ISSUE DATE
98-11-25
02-12-13
Fig 4. Package outline.
9397 750 13004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 02 — 22 April 2004
4 of 7
Philips Semiconductors
BB184
UHF low voltage variable capacitance diode
8. Revision history
Table 6:
BB184_2
Modifications:
BB184_N_1
Revision history
Release date
20040422
Data sheet status
Product data
Change notice
-
Order number
9397 750 13004
Supersedes
BB184_N_1
Document ID
•
The format of this data sheet has been redesigned to comply with the new presentation and
information standard of Philips Semiconductors
Preliminary data
-
9397 750 12694
-
20040114
9397 750 13004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Product data sheet
Rev. 02 — 22 April 2004
5 of 7
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