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Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 03/09/2012 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 1 of 5 DATASHEET Rev B DCQEB50 SERIES 2:1 Input Voltage Ranges Industry Standard Quarter-Brick Package Up to 50 Watts, Single Outputs DC/DC Power Converters

FEATURES

  • Up to 50 Watts Output Power
  • Single Outputs
  • Output Current up to 20A
  • Industry Standard Quarter-Brick Package: 2.28” x 1.45” x 0.50”
  • Under V oltage Lockout
  • Fixed Switching Frequency
  • Input to Output Isolation: 1600VDC
  • 2:1 Wide Input Voltage Range
  • High Efficiency up to 91%
  • No Minimum Load Required
  • Adjustable Output V oltage
  • Threaded Inserts and Thru-Hole Inserts Available
  • Short Circuit, Over Voltage, Over Current, and Over Temp. Protection
  • Compliant to RoHS EU Directive 2002/95/EC
  • CE Mark Meets 2006/95/CE, 93/68/EEC, and 2004/108/EC
  • UL60950-1, EN60950-1, and IEC60950-1 Safety Approvals (See Note 12)

APPLICATIONS

  • Telecom/Datacom
  • Wireless Networks
  • Industry Control Systems
  • Semiconductor Equipment
  • Distributed Power Architectures OPTIONS
  • Heatsinks
  • Pin Lengths
  • Thru-Hole Inserts
  • Negative Logic Remote ON/OFF

DESCRIPTION

The DCQEB50 series of DC/DC power converters provides up to 50 Watts of output power in an industry standard 2.28” x 1.45” x 0.50” quarter-brick package and footprint. This series consists of single output models with 2:1 input voltage ranges of 18-36VDC or 36 -75VDC. Some features i nclude high efficiency up to 91 %, adjustable output voltage, remote sense, and positive or negative remote ON/OFF control. This series is RoHS compliant and has UL60950 -1, EN60950-1, and IEC60950-1 safety approvals (see note 12 ). Several different options are available for this series including negative remote ON/OFF control, heatsinks, pin lengths, and thru-hole inserts. Please call factory for more details.

50W, Single Outputs Quarter-Brick Package DC/DC Power Converters Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 03/09/2012 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 2 of 5 SPECIFICATIONS: DCQEB50 SERIES All specifications are based on 25°C, Nominal Input V oltage, and Maximum Output Current unless otherwise noted. We reserve the right to change specifications based on technological advances. SPECIFICATION TEST CONDITIONS Min Nom Max Unit INPUT SPECIFICATIONS Input V oltage Range 24VDC nominal input models 18 24 36 VDC 48VDC nominal input models 36 48 75 Start-up V oltage 24VDC nominal input models 18 VDC 48VDC nominal input models 36 Shutdown V oltage 24VDC nominal input models 15 VDC 48VDC nominal input models 32 Input Surge V oltage 24VDC nominal input models 100ms 50 VDC 48VDC nominal input models 100 Input Current See Table Input Filter L-C Type OUTPUT SPECIFICATIONS Output V oltage See Table Line Regulation Low line to high line at full load -0.2 +0.2 % Load Regulation No load to full load -0.3 +0.3 % V oltage Accuracy -1.5 +1.5 % V oltage Adjustability (See Note 5) -20 +10 % Output Power See Table Output Current See Table Minimum Load 0 % Ripple & Noise Measured at nominal input and full load with 20MHz BW and 1µF M/C and 10µF T/C capacitors in parallel. 100 mVp-p Transient Response Recovery Time 25% load step change 200 µs Start-Up Time Power Up Nominal input and constant resistive load 25 ms Remote ON/OFF 25 ms Remote Sense (See Note 5) 10 % Vo Temperature Coefficient -0.02 +0.02 %/°C PROTECTION Over V oltage Protection Threshold Non-latching Hiccup 120 % Vo Over Current Protection Threshold 110 140 % Io Short Circuit Protection Hiccup, automatic recovery Over Temperature Protection +110 °C GENERAL SPECIFICATIONS Efficiency Nominal input and full load See Table Switching Frequency 243 270 297 KHz Isolation V oltage Input to Output For 1 minute 1600 VDC Input to Base-plate For 1 minute 1000 VDC Output to Base-plate For 1 minute 1000 VDC Isolation Resistance 10 MΩ Isolation Capacitance 2500 pF REMOTE ON/OFF (See Note 6) Positive Logic (standard) DC/DC ON Open or 3V < Vr < 15V DC/DC OFF Short or 0V < Vr < 1.2V Negative Logic (optional) DC/DC ON Short or 0V < Vr < 1.2V DC/DC OFF Open or 3V < Vr < 15V Input Current of Remote Control Pin Nominal input -0.5 1 mA Remote Off Input Current Nominal input 2.5 mA ENVIRONMENTAL SPECIFICATIONS Operating Base-Plate Temperature (See Note 7) -40 +100 °C Storage Temperature -55 +125 °C Relative Humidity Non-condensing 5 95 % RH Thermal Shock MIL-STD-810F Vibration MIL-STD-810F MTBF (See Note 1) BELLCORE TR-NWT-000332 2,500,000 Hours MIL-HDBK-217F 356,800 Hours PHYSICAL SPECIFICATIONS Weight 1.46oz (42g) Case Material Aluminum base-plate SAFETY & EMC CHARACTERISTICS Safety Approvals UL60950-1, IEC60950-1, EN60950-1 (DCQEB50-48S1.8, 48S2.5, 48S3.3, and 48S05 have approvals; approvals pending for all other models) EMI (See Note 8) EN55022 Class A Radiated Immunity EN61000-4-3 10 V/m Perf. Criteria A Fast Transient (See Note 9) EN61000-4-4 ±2KV Perf. Criteria B Surge (See Note 9) EN61000-4-5 ±1KV Perf. Criteria B Conducted Immunity EN61000-4-6 10 Vrms Perf. Criteria A

50W, Single Outputs Quarter-Brick Package DC/DC Power Converters Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 03/09/2012 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 3 of 5 NOTES 1. BELLCORE TR-NWT-000332. Case 1: 80% Stress, Temperature at 40°C. MIL-HDBK-217F Notice2 @Ta=25°C, Full load (Ground, Benign, controlled environment). 2. Maximum value at nominal input voltage and full load. 3. Typical value at nominal input voltage and no load. 4. Typical value at nominal input voltage and full load. 5. Maximum output deviation is +10% inclusive of trim. If remote sense is not being used the +SENSE should be connected to its corresponding +OUTPUT and likewise the -SENSE should be connected to its corresponding –OUTPUT. 6. The remote ON/OFF control pin voltage is referenced to –INPUT. To order negative logic Remote ON/OFF control add the suffix “R” to the model number (Ex: DCQEB50-48S05R). 7. Heatsink is optional and P/N: 7G-0029A-F, 7G-0030A-F, 7G-0031A-F, and 7G-0032A-F. 8. The DCQEB50 series meets EN55022 Class A and Class B only with external components added before the input pins to the converter. 9. An external input filter capacitor is required if the module has to meet EN61000-4-4 and EN61000-4-5. We recommend Nippon chemi-con KY series, 220µF/100V , ESR 48mΩ. 10. BASE-PLATE GROUNDING: EMI can be reduced when you connect the four screw bolts to the shield plane. 11. The converter is provided with basic insulation. 13. This series comes with several different options: Negative remote ON/OFF control, pin lengths, thru-hole inserts, and heatsinks. CAUTION: The power module is not internally fused. An input line fuse must always be used. Due to advances in technology, specifications subject to change without notice. DERATING MODEL SELECTION TABLE Model Number (12) Input Voltage Range Output Voltage Output Current Ripple & Noise (4) Input Current Output Power Efficiency (4) Min. load Full load No Load (3) Full Load (2) DCQEB50-24S3.3 24VDC (18 - 36 VDC) 3.3 VDC 0mA 15A 100mVp-p 65mA 2398mA 49.5W 90% DCQEB50-24S05 5 VDC 0mA 10A 100mVp-p 95mA 2394mA 50W 91% DCQEB50-24S12 12 VDC 0mA 4.17A 100mVp-p 60mA 2413mA 50W 91% DCQEB50-24S15 15 VDC 0mA 3.33A 100mVp-p 95mA 2392mA 50W 91% DCQEB50-48S1.8

48 VDC

(36 - 75 VDC)

1.8 VDC 0mA 20A 100mVp-p 65mA 904mA 36W 87%

DCQEB50-48S2.5 2.5 VDC 0mA 20A 100mVp-p 55mA 1240mA 50W 88% DCQEB50-48S3.3 3.3 VDC 0mA 15A 100mVp-p 70mA 1199mA 49.5W 90% DCQEB50-48S05 5 VDC 0mA 10A 100mVp-p 65mA 1197mA 50W 91% DCQEB50-48S12 12 VDC 0mA 4.17A 100mVp-p 35mA 1207mA 50W 91% DCQEB50-48S15 15 VDC 0mA 3.33A 100mVp-p 40mA 1196mA 50W 91%

50W, Single Outputs Quarter-Brick Package DC/DC Power Converters Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 03/09/2012 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 4 of 5 CHARACTERISTICS Recommended Filter for EN55022 Class B Compliance Recommended EN55022 Class B Filter Circuit Layout DCQEB50-24Sxx C1 C2 C3 C4 C5 N/A N/A 6.8µF/50V 6.8µF/50V 1.5nF/3KV C6 C7 C8 C9 C10 C11 C12 C13 C14 C15 L1 L2 620µH 620µH DCQEB50-48Sxx C1 C2 C3 C4 C5 100µF/100V 1.5µF/100V 1.5µF/100V 1.5µF/100V 1.5nF/3KV C6 C7 C8 C9 C10 1.5nF/3KV 47µF/100V 1.5µF/100V 1.5µF/100V 0.1µF/50V C11 C12 C13 C14 C15 L1 L2 620µH 620µH DCQEB SERIES

50W, Single Outputs Quarter-Brick Package DC/DC Power Converters Wall Industries, Inc. 37 Industrial Drive Exeter, NH 03833 03/09/2012 603-778-2300 www.wallindustries.com Fax 603-778-9797 Page 5 of 5 MECHANICAL DRAWING COMPANY INFORMATION Wall Industries, Inc. has created custom and modified units for over 50 years. Our in-house research and development engineers will provide a solution that exceeds your performance requirements on-time and on budget. Our ISO9001-2008 certification is just one example of our commitment to producing a high quality, well-documented product for our customers. Our past projects demonstrate our commitment to you, our customer. Wall Industries, Inc. has a reputation for working closely with its customers to ensure each solution meets or exceeds form, fit and function requirements. We will continue to provide ongoing support for your project above and beyond the design and production phases. Give us a call today to discuss your future projects. Contact Wall Industries for further information: Phone: (603)778-2300 Toll Free: (888)587-9255 E-mail: sales@wallindustries.com Web: www.wallindustries.com Address: 5 Watson Brook Rd. Exeter, NH 03833