BB172
VHF variable capacitance diode
Rev. 2 — 3 December 2013
Product data sheet
1. Product profile
1.1 General description
The BB172 is a variable capacitance diode, fabricated in planar technology, and
encapsulated in the SOD323 (SC-76) very small SMD plastic package.
1.2 Features and benefits
Excellent linearity
Very small SMD plastic package
C
d(28V)
= 2.6 pF; C
d(1V)
to C
d(28V)
ratio = 15
Low series resistance
1.3 Applications
Voltage Controlled Oscillators (VCO)
2. Pinning information
Table 1.
Pin
1
2
Pinning
Description
cathode
anode
[1]
Simplified outline
Symbol
[1]
The marking bar indicates the cathode.
3. Ordering information
3.1 Package information
Table 2.
Package information
Package
Name
BB172
SC-76
Description
plastic surface-mounted package; 2 leads
Version
SOD323
Type number
NXP Semiconductors
BB172
VHF variable capacitance diode
3.2 Ordering information
Table 3.
Ordering options
Orderable
part number
BB172X
Package
SC-76
Packing method
tape and reel
Minimum
order quantity
3000
Type number
BB172
4. Marking
Table 4.
BB172
Marking
Marking code
4K
Type number
5. Limiting values
Table 5.
Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
V
R
I
F
T
stg
T
j
reverse voltage
peak value in series with a 10 k resistor
forward current
storage temperature
junction temperature
Conditions
Min Max
-
-
-
32
35
20
Unit
V
V
mA
55
+150
C
55
+125
C
6. Characteristics
Table 6.
Characteristics
T
j
= 25
C unless otherwise specified.
Symbol
I
R
r
s
C
d
Parameter
reverse current
Conditions
V
R
= 30 V
V
R
= 30 V; T
j
= 85
C
diode series resistance f = 100 MHz; C
d
= 30 pF
diode capacitance
f = 1 MHz
V
R
= 1 V
V
R
= 28 V
C
d(1V)
/C
d(2V)
C
d(1V)
/C
d(28V)
diode capacitance ratio f = 1 MHz
(1 V to 2 V)
diode capacitance ratio f = 1 MHz
(1 V to 28 V)
[2]
[1]
[1]
Min
-
-
-
Typ
-
-
Max
10
200
Unit
nA
nA
0.65 0.8
34.65 -
2.361 2.6
-
13.5
-
1.3
15
42.35 pF
2.754 pF
-
-
C
d(25V)
/C
d(28V)
diode capacitance ratio f = 1 MHz
(25 V to 28 V)
[1]
[2]
See
Figure 2.
See
Figure 1
and
Figure 3.
1.08 -
BB172
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 2 — 3 December 2013
2 of 8
NXP Semiconductors
BB172
VHF variable capacitance diode
f = 1 MHz; T
j
= 25
C.
Fig 1.
Diode capacitance as a function of reverse voltage; typical values.
T
j
= 0
C
to 85
C.
Fig 2.
Reverse current as a function of junction
temperature; maximum values.
Fig 3.
Diode capacitance temperature coefficient as a
function of reverse voltage; typical values.
BB172
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 2 — 3 December 2013
3 of 8
NXP Semiconductors
BB172
VHF variable capacitance diode
7. Package outline
Fig 4.
BB172
Package outline SOD323 (SC-76)
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 2 — 3 December 2013
4 of 8
NXP Semiconductors
BB172
VHF variable capacitance diode
8. Abbreviations
Table 7.
Acronym
SMD
VHF
Abbreviations
Description
Surface Mounted Device
Very High Frequency
9. Revision history
Table 8.
BB172 v.2
Modifications
BB172 v.1
Revision history
Release date
20131203
Data sheet status
Product data sheet
Product data sheet
Change notice
-
-
Supersedes
BB172 v.1
-
Document ID
•
Section 3 on page 1:
additional ordering information has been added
20130325
BB172
All information provided in this document is subject to legal disclaimers.
© NXP B.V. 2013. All rights reserved.
Product data sheet
Rev. 2 — 3 December 2013
5 of 8
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