Protected MOSFETs | NUD4700

LED 分路

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概览

NUD4700 是一款电子分路，在一个 LED 进入开路状态时提供旁通电流。LED 在遇到瞬变和电涌情况时，本身就具有相当脆弱的特性。还有很多情况下必须保持 LED 照明的高度可靠性，如头灯、灯塔、桥梁、飞机、跑道等。此类情况下，增加低成本的 NUD4700 即可全面保证整个 LED 串不会在一个 LED 发生故障时全部熄灭。NUD4700 还适用于需要电路连续性的其他负载。此器件适用于 1W LED（标称 350mA @ 3V）。

  • LEDs where Preventive Maintenance is Non Practical
  • LEDs with High Reliability Requirements
  • Crowbar Protection for Open Circuit Conditions
  • Overvoltage Protection for Sensitive Circuits

  • LED Headlights

  • A Simple Two Terminal Device
  • Automatically Resets Itself if the LED Heals Itself or is Replaced
  • ON-State Voltage Typically 1 V
  • OFF-State Current less than 250 µA
  • This is a Pb-Free Device

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NUD4700SNT1G

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CAD Model

Pb

A

H

P

POWERMITE-2

457-04

1

260

REEL

3000

Y

-

5.5

1.0E-4

-

1.56

$0.2285

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SZNUD4700SNT1G

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CAD Model

Pb

A

H

P

POWERMITE-2

457-04

1

260

REEL

3000

N

-

5.5

1.0E-4

-

1.56

$0.1853

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可靠性数据

Die Related Summary Data

Device: SZNUD4700SNT1G

Equivalent to wafer fab process: ZENER

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等效器件小时

平均故障间隔时间/平均无故障时间（按小时计算）

FITS

ZENER

0

3462958625

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Re-calculate Data

Data is based on the following assumptions.

Note: The temperature and confidence level may be adjusted to your requirements.

Disclaimer: A reliability FIT rate calculated using this tool shall not be used for any functional safety purpose. In case a raw FIT rate needs to be estimated for a component which is targeted to be used in a safety critical application (i.e. compliant to ISO 26262 standard) it should be calculated according to generic safety standards (IEC62380, IEC61709, SN29500, FIDES, etc.)

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