Datasheet > BC54PA

BC54PA

更新时间： 2024-02-23 12:05:55

品牌	Logo	应用领域
爱普科斯 - EPCOS		晶体晶体管开关光电二极管
页数	文件大小	规格书
22页	299K
描述
45 V, 1 A NPN medium power transistors

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BC54PA 技术参数

生命周期：	Active	零件包装代码：	DFN
包装说明：	SMALL OUTLINE, S-PDSO-N3	针数：	3
Reach Compliance Code：	compliant	风险等级：	1.57
外壳连接：	COLLECTOR	最大集电极电流 (IC)：	1 A
集电极-发射极最大电压：	45 V	配置：	SINGLE
最小直流电流增益 (hFE)：	63	JESD-30 代码：	S-PDSO-N3
元件数量：	1	端子数量：	3
封装主体材料：	PLASTIC/EPOXY	封装形状：	SQUARE
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	NOT SPECIFIED
极性/信道类型：	NPN	参考标准：	AEC-Q101; IEC-60134
表面贴装：	YES	端子形式：	NO LEAD
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
晶体管应用：	SWITCHING	晶体管元件材料：	SILICON
标称过渡频率 (fT)：	180 MHz	Base Number Matches：	1

BC54PA 数据手册

General Technical Information

■ Unsymmetrical interference:

– This term is used to describe interference on a single line, relative to the reference potential

(fig. 1c)

1.4.2

Characteristics of interferences

In order to be able to choose the correct EMC measures, we need to know the characteristics of the

interferences, how they are propagated and the mechanisms by which they are coupled into the cir-

cuit. In principle, the interferences can also be classified according to their range (fig. 2). At low fre-

quencies, it can be assumed that the interference only spreads along conductive structures, at high

frequencies only by means of electromagnetic radiation. In the MHz frequency range, the term cou-

pling is generally used to describe the mechanism.

Analogously, conducted interference on lines at frequencies of up to several hundred kHz are main-

ly symmetrical (differential mode), at higher frequencies, they are asymmetrical (common mode).

This is because the coupling factor and the effects of parasitic capacitance and inductance between

the conductors increase with frequency.

X capacitors and single chokes are suitable as suppression measures for the differential mode com-

ponents. Where asymmetrical, i.e. common-mode interference has to be eliminated, current-com-

pensated chokes and Y capacitors are mainly used, the prerequisite for this being, however, a well-

designed, EMC-compliant grounding and wiring system.

The categorization of types of interference and suppression measures and their relation to the fre-

quency ranges is reflected in the frequency limits for interference voltage and interference field

strength measurements.

SSB1558-D

Interference

Differential mode

Common mode

Coupling

Field

characteristic

Interference

propagation

Line

X cap

Pc ch.

Y cap

Cc ch.

Ground

Shielding

Remedies

Interference voltage

10 ⁰

Field strength

Max. ratings

^_2

^_1

10 ¹

10 ²

MHz 10 ³

Fig. 2

Frequency range overview

Pc ch. = Iron powder core chokes, but also all single chokes/ X cap = X capacitors

Cc ch. = Current-compensated chokes / Y cap = Y capacitors

11 04/00

1 234 5 6 7...22

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