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| BB178LX Datasheet, PDF (2/7 Pages) NXP Semiconductors – UHF variable capacitance diode | |||
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NXP Semiconductors
BB178LX
VHF variable capacitance diode
4. Marking
Table 3. Marking codes
Type number
BB178LX
Marking code
L3
5. Limiting values
Table 4. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
VR
reverse voltage
-
IF
forward current
-
Tstg
storage temperature
â55
Tj
junction temperature
â55
Max
Unit
32
V
20
mA
+150
°C
+125
°C
6. Characteristics
Table 5. Characteristics
Tj = 25 °C unless otherwise speciï¬ed.
Symbol
Parameter
Conditions
IR
reverse current
see Figure 3
VR = 30 V
VR = 30 V; Tj = 85 °C
rs
diode series resistance
f = 100 MHz at Cd = 30 pF;
see Figure 2
Cd
diode capacitance
f = 1 MHz; see Figure 1 and
Figure 4
VR = 1 V
VR = 28 V
Cd(1V)/Cd(2V) diode capacitance ratio (1 V to 2 V) f = 1 MHz
Cd(1V)/Cd(28V) diode capacitance ratio (1 V to 28 V) f = 1 MHz
Cd(25V)/Cd(28V) diode capacitance ratio (25 V to 28 V) f = 1 MHz
âCd/Cd
diode capacitance matching
VR = 1 V to 28 V; in sequence of
5 diodes (gliding)
Min Typ
-
-
-
-
-
0.7
34.65 -
2.36 2.6
-
1.3
13.5 15
-
1.08
-
-
Max Unit
10 nA
200 nA
-
â¦
42.35 pF
2.75 pF
-
-
-
2
%
BB178LX_2
Product data sheet
Rev. 02 â 12 February 2009
© NXP B.V. 2009. All rights reserved.
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