Additional Resources: Product Page date 11/07/2014 page 1 of 30 SERIES: NEB-N DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS FEATURES GENERAL CHARACTERISTICS pin and function compatible with industry standard footprint Architects of Modern Power product isolated topology standards high power density industry standard eighth-brick fast transient response 58.4 x 22.7 x 10.2 mm high conversion efficiency (2.299 x 0.894 x 0.402 in) wide range of input and output industry-leading power density for characteristics available telecom and datacom 129~147W / sq. in high efficiency, typ. 95.2% at half load, 12 Vout fully regulated advanced bus converter from 36~75Vin 2,250 Vdc input to output isolation fast feed forward regulation to manage line transients optional baseplate for high temperature applications droop load sharing with 10% current share accuracy 2.9 million hours MTBF ISO 9001/14001 certified supplier input voltage output voltage output current output wattage MODEL max max (Vdc) (Vdc) (A) (W) NEB-264NWA-AN 36~75 12 22 264 NEB-300NMA-AN 40~60 12 25 300 NEB-261NWB-AN 36~75 12.45 22 261 cui.comAdditional Resources: Product Page CUI Inc SERIES: NEB-N DESCRIPTION: FULLY REGULATED ADVANCED BUS CONVERTERS date 11/07/2014 page 2 of 30 PART NUMBER KEY NEB- XXX N X X - X X X X - XXX -ES X Base Number Engineering Phase: A~Z Design Output Power: 1~999 Engineering Sample: ES No Digital Interface Firmware Configuration: 000~ZZZ Input Voltage Range: W = wide (36~75 V) M = medium (40~60 V) Heatsink Option:blan = open frame H = heatsink flat G = heatsink with GND pin Nominal Output Voltage: A = 12.0 V B = 12.45 V C = 9.6 V Enable Logic Sense: Load Sharing Function: D = 9.0 V N = negative logic D = Vout droop P = positive logic Pin Description: A = 5.33 mm (0.210 in.) B = 4.57 mm (0.180 in.) C = 3.69 mm (0.145 in.) D = 2.79 mm (0.110 in.) S = SMT Packaging: Example part number: NEB-264NWA-AN-001 20 converters(through hole pin)/tray, PE foam dissipative 264 W output power, no digital pins 20 converters(surface mount pin)/tray, Antistatic PPE wide input voltage range, 12.0 V output 5.33 mm pins, negative enable logic firmware revision 001 CONTENTS Part Number Key........................................................2 EMC Specification.........................................19 General Information...................................................3 Operating Information...................................19 Safety Specification....................................................3 Thermal Consideration..................................21 Absolute Maximum Ratings..........................................4 Connections............................................22 Mechanical Information.................................23 Electrical Specification: Soldering Information...................................26 Delivery Package Information.........................27 12 V, 22 A, 264 W, 36~75 Vin NEB-264NWA-AN.....................5 Product Qualification Specification...................29 12 V, 25 A, 300 W, 40~60 Vin NEB-300NMA-AN.....................9 12.45 V, 22 A, 261 W, 36~75 Vin NEB-261NWB-AN...............13 12.45 V, 25 A, 296 W, 40~60 Vin NEB-296NMB-AN...............16 cui.com