BB178LX_2015 datasheet(2/7 Pages) JMNIC

Part #	BB178LX_2015

Description	UHF variable capacitance diode

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Manufacturer	JMNIC [Quanzhou Jinmei Electronic Co.,Ltd.]

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2 / 7 page

BB178LX_1

Preliminary data sheet

Rev. 01 — 14 April 2006

2 of 7

Philips Semiconductors

BB178LX

UHF variable capacitance diode

4.

Marking

5.

Limiting values

6.

Characteristics

Table 3.

Marking

Type number

Marking code

BB178LX

L3

Table 4.

Limiting values

In accordance with the Absolute Maximum Rating System (IEC 60134).

Symbol

Parameter

Conditions

Min

Max

Unit

VR

reverse voltage

-

32

V

IF

forward current

-

20

mA

Tstg

storage temperature

−55

+150

°C

Tj

junction temperature

−55

+125

°C

Table 5.

Characteristics

Tj = 25 °C unless otherwise speciﬁed.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

IR

reverse current

see Figure 3

VR =30V

-

10

nA

VR =30V; Tj =85 °C

-

200

nA

rs

diode series resistance

f = 470 MHz; Cd = 30 pF; see Figure 2

-

0.7

-

Ω

Cd

diode capacitance

see Figure 1 and Figure 4; f = 1 MHz;

VR = 1 V

34.65

-

42.35

pF

VR = 28 V

2.36

2.6

2.75

pF

diode capacitance ratio

f = 1 MHz

-

1.3

-

diode capacitance ratio

f = 1 MHz

13.5

15

-

diode capacitance ratio

f = 1 MHz

-

1.08

-

diode capacitance

matching

VR = 1 V to 28 V; in sequence of 5

diodes (gliding)

--2

%

C

d1V

()

C

d2V

()

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

C

d1V

()

C

d28V

()

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

C

d25V

()

C

d28V

()

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

∆C

d

C

d

----------

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BB178LX_2015 Datasheet(PDF) 2 Page - Quanzhou Jinmei Electronic Co.,Ltd.

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