LESHAN RADIO COMPANY, LTD.
BB145B–1/2
Low-voltage variable capacitance diode
SOD523 SC-79
1
2
BB 145B
2
ANODE
1
CATHODE
LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
V
R
continuous reverse voltage – 6 V
V RM peak reverse voltage in series with a 10 kΩ resistor – 8 V
I
F
continuous forward current – 20 mA
T stg storage temperature –55 +150 °C
T
j
operating junction temperature –55 +150 °C
ELECTRICAL CHARACTERISTICS T j =25°C unless otherwise specified.
SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT
I R reverse current V R = 6 V; see Fig.2 – 10 nA
V
R
=6 V; T
j
=85°C; see Fig.2 – 200 nA
r s diode series resistance f = 470 MHz; V R =1 V – 0.6 Ω
C
d
diode capacitance V
R
= 1 V; f = 1 MHz; 6.4 7.2 pF
see Figs 1 and 3
V
R
= 4 V; f = 1 MHz; 2.55 2.95 pF
see Figs 1 and 3
C
d ( 1V)
C d ( 4V)
capacitance ratio f = 1 MHz 2.2 –
FEATURES
· Ultra small plastic SMD package
· C4: 2.75 pF; ratio: 2.4
· Low series resistance.
APPLICATIONS
· Voltage controlled oscillators (VCO).
DESCRIPTION
The BB145B is a planar technology variable capacitance diode in a SOD523 (SC-79)
package.
MARKING CODE:Z
Z
1
2