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参数资料
| 型号： | BZ055B333ZSB |
| 厂商： | AVX Corporation |
| 文件页数： | 20/26页 |
| 文件大小： | 0K |
| 描述： | CAP SUPER 33MF 5.5V BZ05 SMD |
| 标准包装： | 100 |
| 系列： | BestCap® BZ |
| 电容： | 33mF |
| 电压 - 额定： | 5.5V |
| 容差： | -20%，+80% |
| ESR（等效串联电阻）： | 125 毫欧 |
| 寿命@温度： | 70°C 时为 1000 小时 |
| 安装类型： | 表面贴装 |
| 封装/外壳： | BZ05，3 引线 |
| 包装： | 散装 |
| 尺寸/尺寸： | 0.787" L x 0.591" W（20.00mm x 15.00mm） |
| 高度 - 座高（最大）： | 0.189"（4.80mm） |
| 工作温度： | -20°C ~ 70°C |
| 其它名称： | 478-6279 |
BestCap Ultra-low ESR
?
High Power Pulse Supercapacitors
SECTION 4: APPLICATION NOTES
4.1: ELECTROCHEMICAL EDLC VS.
ELECTRONIC TECHNOLOGY -
BESTCAP ? CONSTRUCTION
To understand the benefits offered by the BestCap ? , it is
necessary to examine how an electrochemical capacitor
4.2: VOLTAGE DROP
Two factors are critical in determining the voltage drop when
a capacitor delivers a short current pulse; these are ESR
and “available” capacitance as shown in Figure 4.
works. The most significant difference between an electron-
ic capacitor and an electrochemical capacitor is that the
charge transfer is carried out by the electrons in the former
Vo
▲ V(IR)
▲ total=I*R + I* ▲ t/C( ▲ t)
and by electrons and ions in the latter. The anions and
cations involved in double layer supercapacitors are con-
tained in the electrolyte which maybe liquid, (normally an
aqueous or organic solution) or solid. The solid electrolyte is
almost universally a conductive polymer.
Cell Case (Anode)
Insulation Material
Electrode (Cathode)
Current Collector
Carbon
▲ V(Q)=I* ▲ t/C( ▲ t)
Vt
▲ t
Figure 4. Voltage-time relation of capacitor unit
The instant voltage drop Δ V ESR is caused by and is directly
proportional to the capacitor’s ESR. The continuing voltage
drop with time Δ V C , is a function of the available charge, i.e.
capacitance. From Figures 3 and 4, it is apparent that, for
very short current pulses, e.g. in the millisecond region, the
combination of voltage drops in a conventional supercapaci-
Carbon
Separator
tor caused by a) the high ESR and b) the lack of available
capacitance, causes a total voltage drop, unacceptable for
most applications. Now compare the BestCap ? performance
Current Collector
Cell Case (Anode)
Electrons are relatively fast moving and therefore transfer
charge “instantly”. However, ions have to move relatively
slowly from anode to cathode, and hence a finite time is
needed to establish the full nominal capacitance of the
device. This nominal capacitance is normally measured at
1 second.
The differences between EDLC (Electrochemical Double
Layer Capacitors) and electronic capacitors are summarized
under such pulse conditions. The ultra-low ESR, (in
milliOhms), minimizes the instantaneous voltage drop, while
the very high retained capacitance drastically reduces the
severity of the charge related drop. This is explained further
in a later section.
EFFICIENCY/TALKTIME BENEFITS OF BESTCAP ?
Because BestCap ? , when used in parallel with a battery,
provides a current pulse with a substantially higher voltage
than that available just from the battery as shown in Figure
5, the efficiency of the RF power amplifier is improved.
in the table below:
? A capacitor basically consists of two conductive plates
(electrodes), separated by a layer of dielectric material.
? These dielectric materials may be ceramic, plastic film,
paper, aluminum oxide, etc.
? EDLCs do not use a discrete dielectric interphase
4
3.8
3.6
3.4
3.2
5
4
3
2
1
separating the electrodes.
3
0
1000
2000
3000
4000
0
? EDLCs utilize the charge separation, which is formed
Time (μSeconds)
across the electrode – electrolyte interface.
Battery Voltage
Battery and Capacitor Voltage
Current Pulse
? The EDLC constitutes of two types of charge carriers:
IONIC species on the ELECTROLYTE side and
ELECTRONIC species on the ELECTRODE side.
Figure 5. GSM Pulse
Additionally, the higher-than battery voltage supplied by the
BestCap ? keeps the voltage pulse above the “cut off volt-
age” limit for a significantly longer time than is the case for
the battery alone. This increase in “talk time” is demonstrated
in Figures 6(a) (Li-Ion at +25°C), and 6(b) (Li-Ion at 0°C).
19
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相关代理商/技术参数 |
参数描述 |
|---|---|
| BZ055B333ZSBCP | 功能描述:超级电容/超级电容器 5.5volt 33MF 80 -20% RoHS:否 制造商:Murata 电容:350 mF 容差: 电压额定值:4.2 V ESR:60 mOhms 工作温度范围:- 30 C to + 70 C 端接类型:SMD/SMT 引线间隔: 尺寸:18.5 mm W x 20.5 mm L x 3 mm H |
| BZ05CA103ZCB | 功能描述:超级电容/超级电容器 12v 10mF Tol. -20/+80% RoHS:否 制造商:Murata 电容:350 mF 容差: 电压额定值:4.2 V ESR:60 mOhms 工作温度范围:- 30 C to + 70 C 端接类型:SMD/SMT 引线间隔: 尺寸:18.5 mm W x 20.5 mm L x 3 mm H |
| BZ05CA103ZNB | 功能描述:超级电容/超级电容器 12v 10mF Tol. -20/+80% RoHS:否 制造商:Murata 电容:350 mF 容差: 电压额定值:4.2 V ESR:60 mOhms 工作温度范围:- 30 C to + 70 C 端接类型:SMD/SMT 引线间隔: 尺寸:18.5 mm W x 20.5 mm L x 3 mm H |
| BZ05CA103ZSB | 功能描述:超级电容/超级电容器 12volt 10mF Low Profile RoHS:否 制造商:Murata 电容:350 mF 容差: 电压额定值:4.2 V ESR:60 mOhms 工作温度范围:- 30 C to + 70 C 端接类型:SMD/SMT 引线间隔: 尺寸:18.5 mm W x 20.5 mm L x 3 mm H |
| BZ05FB6828NBCL | 功能描述:超级电容/超级电容器 15volt 6.80MF 50-20% RoHS:否 制造商:Murata 电容:350 mF 容差: 电压额定值:4.2 V ESR:60 mOhms 工作温度范围:- 30 C to + 70 C 端接类型:SMD/SMT 引线间隔: 尺寸:18.5 mm W x 20.5 mm L x 3 mm H |
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