Protected MOSFETs | NUD4700

LED シャント

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Overview

NUD4700 は電子シャントで、シングル LED が開回路になると電流バイパスを提供します。LED は過渡およびサージ状態にさらされると性質上極めて脆いです。ヘッドライト、灯台、橋、航空機、滑走路など LED 照明の高信頼性を維持する必要があるケースも数多くあります。このようなケースでは、低コストの NUD4700 を追加することで、1 つの LED が故障したときに、LED のストリング全体が消灯してしまうことは決してありません。NUD4700 は回路の継続性が必要な他の負荷にも適用できます。このデバイスは、1W LED での使用を前提に設計されています (通常、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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MSL Type

MSL Temp (°C)

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V(BR)DSS Min (V)

ID Typ (A)

rDS(on) Max (mΩ)

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Reference Price

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

More Details

SZNUD4700SNT1G

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Active

CAD Model

Pb

A

H

P

POWERMITE-2

457-04

1

260

REEL

3000

N

-

5.5

1.0E-4

-

1.56

$0.1853

More Details

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Die Related Summary Data

Device: SZNUD4700SNT1G

Equivalent to wafer fab process: ZENER

製品技術

製品技術

等価デバイス時間

MTBF/MTTF (時間)

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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