NKA Series www.murata-ps.com Isolated Sub-Miniature 1W Dual Output DC-DC Converters SELECTION GUIDE Input Nominal Output Output Current Isolation Input Efficiency MTTF1 Package Order Code Voltage Current at Rated Capacitance Voltage Style Load V V mA % pF kHrs NKA0303SC 3.3 ±3.3 ±152 407 74 20 195 SIP NKA0305SC 3.3 ±5 ±100 383 79 22 1121 SIP NKA0312SC 3.3 ±12 ±42 390 78 31 375 SIP NKA0312DC 3.3 ±12 ±42 390 78 31 375 DIP NKA0315SC 3.3 ±15 ±33 384 79 32 206 SIP NKA0503SC 5 ±3.3 ±152 259 77 22 205 SIP FEATURES NKA0505SC 5 ±5 ±100 285 70 21 1697 SIP NKA0509SC 5 ±9 ±56 263 76 25 682 SIP (cid:132)(cid:3)Efficiency up to 82% NKA0512SC 5 ±12 ±42 255 78 28 343 SIP (cid:132)(cid:3)3kVDC Isolation ‘Hi Pot Test’ NKA0515SC 5 ±15 ±33 253 79 29 188 SIP NKA1205SC 12 ±5 ±100 112 74 33 559 SIP (cid:132)(cid:3)Wide temperature performance at full NKA1209SC 12 ±9 ±56 106 79 48 375 SIP 1 Watt load, –40°C to 85°C NKA1212SC 12 ±12 ±42 104 81 55 243 SIP (cid:132)(cid:3)Industry standard pinout NKA1215SC 12 ±15 ±33 102 82 60 154 SIP (cid:132)(cid:3)Power sharing on output NKA1215DC 12 ±15 ±33 102 82 60 154 DIP Recommended (cid:132)(cid:3)3.3V, 5V & 12V Input Alternative (cid:132)(cid:3)3.3V, 5V, 9V, 12V and 15V output NKA0303DC 3.3 ±3.3 ±152 407 74 20 195 DIP NKA0303SC NKA0305DC 3.3 ±5 ±100 383 79 22 1121 DIP NKA0305SC (cid:132)(cid:3)Internal SMD construction NKA0309DC 3.3 ±9 ±56 402 75 30 1035 DIP Contact Murata (cid:132)(cid:3)No external components required NKA0309SC 3.3 ±9 ±56 402 75 30 1035 SIP Contact Murata NKA0315DC 3.3 ±15 ±33 384 79 32 206 DIP NKA0315SC (cid:132)(cid:3)MTTF up to 1.6 Million hours NKA0503DC 5 ±3.3 ±152 259 77 22 205 DIP NKA0503SC (cid:132)(cid:3)No electrolytic or tantalum capacitors NKA0505DC 5 ±5 ±100 285 70 21 1697 DIP NMA0505DC NKA0505DEC 5 ±5 ±100 249 80 26 1557 DIP NMA0505DC (cid:132)(cid:3)Pin compatible with NMA & MEA1 series NKA0505SEC 5 ±5 ±100 249 80 26 1557 SIP NMA0505SC NKA0509DC 5 ±9 ±56 263 76 25 682 DIP NMA0509DC DESCRIPTION NKA0512DC 5 ±12 ±42 255 78 28 343 DIP NMA0512DC The NKA sub-miniature series of industrial NKA0515DC 5 ±15 ±33 253 79 29 188 DIP NMA0515DC temperature range DC-DC converters are the NKA1205DC 12 ±5 ±100 112 74 33 559 DIP NMA1205DC standard building blocks for on-board distributed NKA1209DC 12 ±9 ±56 106 79 48 375 DIP NMA1209DC power systems. The series offers smaller package NKA1212DC 12 ±12 ±42 104 81 55 243 DIP NMA1212DC size, improved efficiency, lower output ripple and NKA0505DEC/NKA0505SEC offer higher efficiency than NKA0505SC/NKA0505DC but over a narrower operating temperature range. 3kVDC isolation capability through the use of state See temperature characteristics graph. of the art packaging and technology. Ideally suited for providing dual rail supplies on primarily digital INPUT CHARACTERISTICS boards with the added benefit of galvanic isolation Parameter Conditions Min. Typ. Max. Units to reduce switching noise. Continuous operation, 3.3V input types 2.97 3.3 3.63 All of the rated power may be drawn from a single Voltage range Continuous operation, 5V input types 4.5 5 5.5 V pin provided the total load does not exceed 1 watt. Continuous operation, 12V input types 10.8 12 13.2 3.3V input types 30 60 Reflected ripple current mA p-p All other types 20 35 ABSOLUTE MAXIMUM RATINGS Lead temperature 1.5mm from case for 10 seconds 260°C Input voltage VIN, NKA03 types 5.5V Input voltage VIN, NKA05 types 7V Input voltage VIN, NKA12 types 15V For full details go to www.murata-ps.com/rohs 1. Calculated using MIL-HDBK-217F with nominal input voltage at full load. All specifications typical at TA=25°C, nominal input voltage and rated output current unless otherwise specified. www.murata-ps.com/support KDC_NKA.L01 Page 1 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters OUTPUT CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Rated Power TA=-40°C to 120°C, see derating graphs 1 W Voltage Set Point Accuracy See tolerance envelope Line regulation High VIN to low VIN 1.0 1.2 %/% 10% load to rated load, 0312 & 0315 8 14 10% load to rated load, 3.3V output types 10 15 10% load to rated load, 5V output types 10 12 Load Regulation2 % 10% load to rated load, 9V output types 6.5 8 10% load to rated load, 12V output types 6 8.5 10% load to rated load, 15V output types 6 7 BW=DC to 20MHz, 0312 & 0315 25 60 BW=DC to 20MHz, 3.3V output types 40 80 BW=DC to 20MHz, 5V output types 50 75 Ripple and Noise mV p-p BW=DC to 20MHz, 9V output types 40 65 BW=DC to 20MHz, 12V output types 40 60 BW=DC to 20MHz, 15V output types 40 60 ISOLATION CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Isolation test voltage Flash tested for 1 second 3000 VDC Resistance Viso= 1000VDC 10 GΩ GENERAL CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units 0303, 0305, 0312, 0315, 0503 and 0505XE 95 Switching frequency kHz All other types 120 TEMPERATURE CHARACTERISTICS Parameter Conditions Min. Typ. Max. Units Specification All output types -40 85 Storage -50 130 °C Case temperature rise above 5V output types 30 ambient All other output types 21 Cooling Free air convection TECHNICAL NOTES ISOLATION VOLTAGE ‘Hi Pot Test’, ‘Flash Tested’, ‘Withstand Voltage’, ‘Proof Voltage’, ‘Dielectric Withstand Voltage’ & ‘Isolation Test Voltage’ are all terms that relate to the same thing, a test voltage, applied for a specified time, across a component designed to provide electrical isolation, to verify the integrity of that isolation. Murata Power Solutions NKA series of DC-DC converters are all 100% production tested at their stated isolation voltage. This is 1kVDC for 1 second. A question commonly asked is, “What is the continuous voltage that can be applied across the part in normal operation?” For a part holding no specific agency approvals, such as the NKA series, both input and output should normally be maintained within SELV limits i.e. less than 42.4V peak, or 60VDC. The isolation test voltage represents a measure of immunity to transient voltages and the part should never be used as an element of a safety isolation system. The part could be expected to function correctly with several hundred volts offset applied continuously across the isolation barrier; but then the circuitry on both sides of the barrier must be regarded as operating at an unsafe voltage and further isolation/insulation systems must form a barrier between these circuits and any user-accessible circuitry according to safety standard requirements. REPEATED HIGH-VOLTAGE ISOLATION TESTING It is well known that repeated high-voltage isolation testing of a barrier component can actually degrade isolation capability, to a lesser or greater degree depending on materials, construction and environment. The NKA series has toroidal isolation transformers, with no additional insulation between primary and secondary windings of enameled wire. While parts can be expected to withstand several times the stated test voltage, the isolation capability does depend on the wire insulation. Any material, including this enamel (typically polyurethane) is susceptible to eventual chemical degradation when subject to very high applied voltages thus implying that the number of tests should be strictly limited. We therefore strongly advise against repeated high voltage isolation testing, but if it is absolutely required, that the voltage be reduced by 20% from specified test voltage. This consideration equally applies to agency recognized parts rated for better than functional isolation where the wire enamel insulation is always supplemented by a further insulation system of physical spacing or barriers. 1. 12V input types have typically 3% less load regulation. www.murata-ps.com/support KDC_NKA.L01 Page 2 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters TEMPERATURE DERATING GRAPHS NKA0303DC/SC, 0305DC/SC 1.5 All other types. 1.5 0309DC/SC, 0505DEC/SEC types only. wer (W)1.0 85°C wer (W)1.0 85°C ut Po0.5 Safe Operating Area ut Po0.5 Safe Operating Area p p ut ut 120°C O O 0 0 -40 0 50 100 150 -40 0 50 100 150 Ambient Temperature (°C) Ambient Temperature (°C) TOLERANCE ENVELOPES 3.3V output types. All other types. +9% +10% +1% Typical Load Line +1% +5% Typical Load Line +2.5% V V NOM NOM -2.5% e e ag -7% -7% ag -7.5% ut Volt -15% ut Volt p p ut ut O 10 25 50 75 100 O 10 25 50 75 100 Output Load Current (%) Output Load Current (%) The voltage tolerance envelope shows typical load regulation characteristics for this product series. The tolerance envelope is the maximum output voltage variation due to changes in output loading. www.murata-ps.com/support KDC_NKA.L01 Page 3 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters APPLICATION NOTES Minimum load The minimum load to meet datasheet specification is 10% of the full rated load across the specified input voltage range. Lower than 10% minimum loading will result in an increase in output voltage, which may rise to typically double the specified output voltage if the output load falls to less than 5%. Capacitive loading and start up Typical start up times for this series, with a typical input voltage rise time of 2.2μs and output capacitance of 10μF, are shown in the table below. The product series will start into a capacitance of 47μF with an increased start time, however, the maximum recommended output capacitance is 10μF. Typical Start-Up Wave Form Start-up time Start-up time ms ms NKA0303SC 1.35 NKA0509SC 8.01 NKA0305SC 3.35 NKA0512SC 14.63 NKA0309SC 9.30 NKA0515SC 28.38 NKA0312SC 22.13 NKA1205SC 2.11 NKA0315SC 25.04 NKA1209SC 7.62 NKA0503SC 0.80 NKA1212SC 9.08 NKA0505SC 2.32 NKA1215SC 14.39 NKA0505SEC 2.03 Ripple & Noise Characterisation Method Ripple and noise measurements are performed with the following test configuration. C1 1μF X7R m ultilayer ceramic capacitor, voltage rating to be a minimum of 3 times the output voltage of the DC-DC converter 10μF tantalum capacitor, voltage rating to be a minimum of 1.5 times the output voltage of the DC-DC converter with an ESR of less C2 than 100mΩ at 100 kHz C3 100nF multilayer ceramic capacitor, general purpose R1 450Ω resistor, carbon film, ±1% tolerance R2 50Ω BNC termination T1 3T of the coax cable through a ferrite toroid RLOAD Resistive load to the maximum power rating of the DC-DC converter. Connections should be made via twisted wires Measured values are multiplied by 10 to obtain the specified values. Differential Mode Noise Test Schematic DC/DC Converter OSCILLOSCOPE C1 C2 C3 R1 T1 R2 + + Y INPUT SUPPLY Input Output - - R LOAD www.murata-ps.com/support KDC_NKA.L01 Page 4 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters APPLICATION NOTES (continued) Output Ripple Reduction By using the values of inductance and capacitance stated, the output ripple at the rated load is lowered to 5mV p-p max. Component selection Capacitor: It is required that the ESR (Equivalent Series Resistance) should be as low as possible, ceramic types are recommended. The voltage rating should be at least twice (except for 15V output), the rated output voltage of the DC-DC converter. Inductor: The rated current of the inductor should not be less than that of the output of the DC-DC converter. At the rated current, the DC resistance of the inductor should be such that the voltage drop across the inductor is <2% of the rated voltage of the DC-DC converter. The SRF (Self Resonant Frequency) should be >20MHz. L DC Power C Load Source DC Inductor Capacitor L, μH SMD Through Hole C, μF NKA0303xC 10 82103C 11R103C 1uF NKA0305xC 22 82223C 11R223C 2.2uF NKA0309xC 47 82473C 11R473C 2.2uF NKA0312xC 68 82683C 11R683C 3.3uF NKA0315xC 470 82474C 11R474C 2.2uF NKA0503xC 10 82103C 11R103C 1uF NKA0505xC 22 82223C 11R223C 2.2uF NKA0505xEC 22 82223C 11R223C 2.2uF NKA0509xC 47 82473C 11R473C 2.2uF NKA0512xC 150 82154C 11R154C 0.33uF NKA0515xC 470 82474C 11R474C 2.2uF NKA1205xC 22 82223C 11R223C 2.2uF NKA1209xC 47 82473C 11R473C 2.2uF NKA1212xC 150 82154C 11R154C 0.33uF NKA1215xC 470 82474C 11R474C 2.2uF www.murata-ps.com/support KDC_NKA.L01 Page 5 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters PACKAGE SPECIFICATIONS MECHANICAL DIMENSIONS PIN CONNECTIONS - 14 PIN DIP SIP package 16.55 [0.652] Pin Function 1 -VIN 7 NC 5.95 [0.234] 8 OV 9 +VOUT 11 -VOUT MIN 14 +VIN 0] 2 0.0 PIN CONNECTIONS - 6 PIN SIP 0 [ 7.55 [0.297] MAX NKAXXXXSC 0.5 Pin Function XYYWW 1 +VIN 4.10±0.50 [0.161±0.020] 1 2 4 5 6 2 -VIN 4 -VOUT 5 OV 0.50±0.05 [0.020±0.002] 6 +VOUT 2.54 [0.100] 0.25±0.05 [0.010±0.002] [ ] 1.33 0.052 0.97 0.038 12.70 [0.500] [ ] 2.49 0.098 1.66 0.065 DIP package 19.50 [0.768] 9.80 [0.386] NKAXXXXDC XYYWW 5.40 [0.213] 4.10±0.50 [0.161±0.020] 0.50±0.05 [0.020±0.002] 0] 0 [ ] 3 22..4046 00..009861 2 [0. 6 7. [ ] 1.40 0.055 1 7 1.02 0.040 14 11 9 8 0.25±0.05 [0.010±0.002] 7.62 [0.300] 15.24 [0.600] Controlling dimension is mm. Unless otherwise stated all dimensions in mm (inches) ±0.25mm (0.010). All pins on a 2.54mm (0.100”) pitch and within 0.25mm (0.010”) of true position. Weight: 1.4g (SIP) 1.9g (DIP) www.murata-ps.com/support KDC_NKA.L01 Page 6 of 7

NKA Series Isolated Sub-Miniature 1W Dual Output DC-DC Converters PACKAGE SPECIFICATIONS (continued) RECOMMENDED FOOTPRINT DETAILS 14 Pin DIP Package 6 Pin SIP Package Ø00..00435934 ((11..0105))6 HOLES Ø0.1 Ø0.0453 (1.00)5 HOLES Ø0.1 0.0394 (1.15) 0.1 (2.54) 0.1 (2.54) 0.1 (2.54) 0.1 (2.54) TUBE OUTLINE DIMENSIONS 14 Pin DIP Tube 6 Pin SIP Tube (cid:17)(cid:15)(cid:21)(cid:22)(cid:24)(cid:1)(cid:9)(cid:18)(cid:18)(cid:15)(cid:23)(cid:17)(cid:1)(cid:10) 7.7 [0.303] (cid:17)(cid:10) (cid:23) (cid:18)(cid:19)(cid:15) 9.3 [0.366] (cid:23)(cid:1)(cid:9) (cid:26) (cid:17)(cid:15)(cid:21) 14.8 [0.583] (cid:17)(cid:15)(cid:19)(cid:18)(cid:20)(cid:1)(cid:9)(cid:22)(cid:15)(cid:21)(cid:17)(cid:10) (cid:17)(cid:15)(cid:18)(cid:26)(cid:24)(cid:1)(cid:9)(cid:22)(cid:15)(cid:17)(cid:17)(cid:10) (cid:17)(cid:15)(cid:17)(cid:19)(cid:20)(cid:23)(cid:156)(cid:17)(cid:15)(cid:17)(cid:17)(cid:23)(cid:1)(cid:9)(cid:17)(cid:15)(cid:23)(cid:17)(cid:156)(cid:17)(cid:15)(cid:18)(cid:22)(cid:10)(cid:1) 4.45 [0.175] Unless otherwise specified all dimensions in mm [inches] ±0.55mm [0.022]. Tube length (14 Pin DIP) : 520mm ±2mm (20.47). DIP Tube Quantity : 25 Tube length (6 Pin SIP) : 525mm [20.669] ±2.0 [0.079]. SIP Tube Quantity : 30 RoHS COMPLIANCE INFORMATION This series is compatible with RoHS soldering systems with a peak wave solder temperature of 260°C for 10 seconds. The pin termination finish on the SIP package type is Tin Plate, Hot Dipped over Matte Tin with Nickel Preplate. The DIP types are Matte Tin over Nickel Preplate. Both types in this series are backward compatible with Sn/Pb soldering systems. For further information, please visit www.murata-ps.com/rohs This product is subject to the following operating requirements and the Life and Safety Critical Application Sales Policy: Refer to: http://www.murata-ps.com/requirements/ Murata Power Solutions, Inc. makes no representation that the use of its products in the circuits described herein, or the use of other technical information contained herein, will not infringe upon existing or future patent rights. The descriptions contained herein do not imply the granting of licenses to make, use, or sell equipment constructed in accordance therewith. Specifications are subject to change without notice. © 2017 Murata Power Solutions, Inc. www.murata-ps.com/support KDC_NKA.L01 Page 7 of 7

Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: M urata: NKA0305SC NKA0305DC NKA0315SC NKA0315DC NKA0303DC NKA0303SC NKA0509DC NKA0509SC NKA0312SC NKA0312DC NKA1205SC NKA1205DC NKA1209DC NKA1209SC NKA0503SC NKA0503DC NKA0505SC NKA0505DC NKA0515DC NKA0515SC NKA1215DC NKA1215SC NKA0512SC NKA0512DC NKA1212DC NKA1212SC NKA0309DC NKA0309SC NKA0505DEC NKA0505SEC