NUD4700 LED Shunt The NUD4700 is an electronic shunt which provides a current bypass in the case of a single LED going into open circuit. LEDs are by nature quite fragile when subjected to transients and surge conditions. There are also many cases where high reliability of the LED lighting must be maintained such as headlights, lighthouses, bridges, aircraft, runways www.onsemi.com and so forth. In these cases the low cost addition of the NUD4700 will provide full assurance that an entire string of LEDs will not extinguish Anode should one LED fail. NUD4700 is also applicable to other loads where circuit continuity is required. This device is designed to be used with 1 W LEDs (nominally 350 mA 3 V). Control Circuit Features A Simple Two Terminal Device Cathode Automatically Resets Itself if the LED Heals Itself or is Replaced ONState Voltage Typically 1 V OFFState Current less than 250 A Anode Available with White Package Cathode SZ Prefix (black package only) for Automotive and Other Applications Requiring Unique Site and Control Change POWERMITE Requirements AECQ101 Qualified and PPAP Capable CASE 457 These Devices are PbFree, Halogen Free/BFR Free and are RoHS Compliant MARKING DIAGRAM Typical Applications LEDs where Preventive Maintenance is Non Practical M Anode Cathode MNH LED Headlights LEDs with High Reliability Requirements M = Date Code Crowbar Protection for Open Circuit Conditions MNH = Device Code Overvoltage Protection for Sensitive Circuits = PbFree Package PIN FUNCTION DESCRIPTION Pin Description Anode Positive Input Voltage to the Device Cathode Negative Input Voltage to the Device ORDERING INFORMATION Device Package Shipping NUD4700SNT1G POWERMITE 3000/Tape & (Black) Reel SZNUD4700SNT1G POWERMITE 3000/Tape & (Black) Reel NUD4700WSNT1G POWERMITE 3000/Tape & (White) Reel For information on tape and reel specifications, including part orientation and tape sizes, please refer to our Tape and Reel Packaging Specifications Brochure, BRD8011/D. Semiconductor Components Industries, LLC, 2017 1 Publication Order Number: January, 2017 Rev. 11 NUD4700/DNUD4700 MAXIMUM RATINGS (Maximum ratings are those, that, if exceeded, may cause damage to the device. Electrical Characteristics are not guaranteed over this range) Rating Symbol Value Unit Peak Repetitive Off State Voltage (Anode to Cathode) V 0.3 to 10 V DM Average OnState Current, (T = 25C), I A A T(AVG) (Note 1) 1.3 (Note 2) 0.376 Thermal Resistance, JunctiontoAir C/W Q JA (Note 1) 80 (Note 2) 277 Thermal Resistance, JunctiontoLead Q 35 C/W JL Power Dissipation (T = 25C) P W A MAX (Note 1) 1.56 (Note 2) 0.45 Operating Temperature Range T 40 to 150 C J NonOperating Temperature Range T 150 C J Lead Temperature, Soldering (10 Sec) T 260 C L Stresses exceeding those listed in the Maximum Ratings table may damage the device. If any of these limits are exceeded, device functionality should not be assumed, damage may occur and reliability may be affected. 1. Mounted onto a 1 x 1 square copper pad. Normally this device would be mounted on the same copper heat sink and adjacent to the LED. If the LED were to go open, then the NUD4700 shunt would now dissipate the power using the same copper heat sink. Since the NUD4700 has a voltage that is nominally 30% of the LED, then the power dissipation would be easily handled by the same heat sink as the LED. 2. Device mounted on minimum copper pad. ELECTRICAL CHARACTERISTICS (Unless otherwise noted: T = 25C) A Characteristics Symbol Min Typ Max Unit OffState Current I 100 250 A LEAK (V = 5 V) Anode Breakdown Voltage V 5.5 7.5 V (BR) (I = 1 mA) BR Holding Current I 6.0 12 mA H (V = 10 V, I = 100 mA) Anode initial Latching Current I 35 70 mA L (V = 10 V) Anode OnState Voltage (I = 0.350 A) V 1.0 1.2 V T T (I = 0.750 A) 1.0 T (I = 1.0 A) 1.0 T DYNAMIC CHARACTERISTICS Critical RateofRise of Off State Voltage dV/dt 250 V/ s (V = Rated V , T = 125C, Exponential Method) pk (BR) J Product parametric performance is indicated in the Electrical Characteristics for the listed test conditions, unless otherwise noted. Product performance may not be indicated by the Electrical Characteristics if operated under different conditions. www.onsemi.com 2