1.5SMC20AT3G

更新时间： 2024-01-23 17:39:15

品牌	Logo	应用领域
安森美 - ONSEMI		瞬态抑制器二极管光电二极管局域网
页数	文件大小	规格书
7页	74K
描述
1500 Watt Peak Power Zener Transient Voltage Suppressors Unidirectional*

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1.5SMC20AT3G 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Transferred	包装说明：	R-PDSO-C2
针数：	2	Reach Compliance Code：	not_compliant
ECCN代码：	EAR99	HTS代码：	8541.10.00.50
风险等级：	5.31	Is Samacsys：	N
其他特性：	UL RECOGNIZED, HIGH RELIABILITY	最大击穿电压：	21 V
最小击穿电压：	19 V	击穿电压标称值：	20 V
最大钳位电压：	27.7 V	配置：	SINGLE
二极管元件材料：	SILICON	二极管类型：	TRANS VOLTAGE SUPPRESSOR DIODE
JESD-30 代码：	R-PDSO-C2	JESD-609代码：	e3
湿度敏感等级：	1	最大非重复峰值反向功率耗散：	1500 W
元件数量：	1	端子数量：	2
最高工作温度：	150 °C	最低工作温度：	-65 °C
封装主体材料：	PLASTIC/EPOXY	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE	峰值回流温度（摄氏度）：	260
极性：	UNIDIRECTIONAL	最大功率耗散：	0.75 W
认证状态：	Not Qualified	最大重复峰值反向电压：	17.1 V
子类别：	Transient Suppressors	表面贴装：	YES
技术：	ZENER	端子面层：	Tin (Sn)
端子形式：	C BEND	端子位置：	DUAL
处于峰值回流温度下的最长时间：	40	Base Number Matches：	1

1.5SMC20AT3G 数据手册

1.5SMC6.8AT3 Series

APPLICATION NOTES

RESPONSE TIME

minimum lead lengths and placing the suppressor device as

close as possible to the equipment or components to be

protected will minimize this overshoot.

In most applications, the transient suppressor device is

placed in parallel with the equipment or component to be

protected. In this situation, there is a time delay associated

with the capacitance of the device and an overshoot

condition associated with the inductance of the device and

the inductance of the connection method. The capacitive

effect is of minor importance in the parallel protection

scheme because it only produces a time delay in the

transition from the operating voltage to the clamp voltage as

shown in Figure 5.

The inductive effects in the device are due to actual

turn-on time (time required for the device to go from zero

current to full current) and lead inductance. This inductive

effect produces an overshoot in the voltage across the

equipment or component being protected as shown in

Figure 6. Minimizing this overshoot is very important in the

application, since the main purpose for adding a transient

suppressor is to clamp voltage spikes. The SMC series have

a very good response time, typically < 1.0 ns and negligible

inductance. However, external inductive effects could

produce unacceptable overshoot. Proper circuit layout,

Some input impedance represented by Z is essential to

prevent overstress of the protection device. This impedance

should be as high as possible, without restricting the circuit

operation.

DUTY CYCLE DERATING

The data of Figure 1 applies for non-repetitive conditions

and at a lead temperature of 25°C. If the duty cycle increases,

the peak power must be reduced as indicated by the curves

of Figure 7. Average power must be derated as the lead or

ambient temperature rises above 25°C. The average power

derating curve normally given on data sheets may be

normalized and used for this purpose.

At first glance the derating curves of Figure 7 appear to be

in error as the 10 ms pulse has a higher derating factor than

the 10 ms pulse. However, when the derating factor for a

given pulse of Figure 7 is multiplied by the peak power value

of Figure 1 for the same pulse, the results follow the

expected trend.

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与1.5SMC20AT3G相关器件

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1.5SMC20ATG	ONSEMI	1500 Watt Peak Power Zener Transient Voltage Suppressors	获取价格
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