Datasheet > BB178

BB178

更新时间： 2024-10-16 22:39:27

品牌	Logo	应用领域
乐山 - LRC		二极管
页数	文件大小	规格书
2页	152K
描述
VHF variable capacitance diode

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中文翻译

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技术参数
数据手册

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BB178 技术参数

生命周期：	Contact Manufacturer	Reach Compliance Code：	unknown
ECCN代码：	EAR99	风险等级：	5.71
二极管类型：	VARIABLE CAPACITANCE DIODE	最大重复峰值反向电压：	35 V
子类别：	Varactors	表面贴装：	YES
Base Number Matches：	1

BB178 数据手册

LESHAN RADIO COMPANY, LTD.

VHF variable capacitance diode

BB 178

FEATURES

· Excellent linearity

DESCRIPTION

The BB178 is a planar technology variable

capacitance diode, in a SOD523 (SC-79)

package. The excellent matching perfor-

mance is achieved by gliding matching and

a direct matching assembly procedure.

· Excellent matching to 2% DMA

· Ultra small plastic SMD package

· C 28: 2.6 pF; ratio: 15

· Very low series resistance.

APPLICATIONS

SOD523 SC-79

· Electronic tuning in VHF television

tuners, band B up to 460 MHz

· Voltage controlled oscillators(VCO).

MARKING CODE:8

CATHODE

ANODE

LIMITING VALUES In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

UNIT

V _R

V _RM

I _F

continuous reverse voltage

peak reverse voltage

–

in series with a 10 kΩ resistor

continuous forward current

storage temperature

–

°C

T _stg

T _j

–55

+150

+125

operating junction temperature

ELECTRICAL CHARACTERISTICS T _j=25°C unless otherwise specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

MAX.

TYP.

UNIT

I _R

reverse current

V _R= 30 V; see Fig.2

–

V _R= 30 V; T _j=85°C; see Fig.2

f = 100 MHz;

–

200

r _s

diode series resistance

diode capacitance

–

0.65

0.8

Ω

V _Ris the value at which Cd =30 pF

V _R= 1 V; f = 1 MHz; see Figs 1and 3

V _R= 28 V; f = 1 MHz; see Figs 1and 3

C _d

34.65

2.361

–

42.35

2.754

C _d(1V)

C _d(2V)

C _d(1V)

C _d(28V)

C _d(25V)

C _d(28V)

∆C _d

capacitance ratio

f = 1 MHz

–

13.5

–

1.3

–

1.08

–

capacitance matching V _R= 1 to 28 V; in a sequence of 15

diodes(gliding)

–

C _d

BB178–1/2

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