Additional Resources: Product Page | 3D Model date 02/07/2013 page 1 of 4 SERIES: VSBU-120 │ DESCRIPTION: AC-DC POWER SUPPLY FEATURES • up to 120 W continuous power • industry standard 3” x 5” footprint • universal input 90~260 Vac • single output from 3.3~48 V • active power correction • internal EMI filter • no minimum load required • input surge current, over voltage, over load, and over current protections • UL/cUL and TUV safety approvals • efficiency 80% RoHS MODEL output output output ripple and efficiency voltage current power noise range max max max typ (Vdc) (A) (W) (mVp-p) (%) VSBU-120-3.3 3~5 22 73 66 80 VSBU-120-5 5~6 22 110 50 80 VSBU-120-7.5 6~9 15.3 115 75 80 VSBU-120-9 9~11 13.33 120 90 80 VSBU-120-12 11~13 10 120 120 80 VSBU-120-15 13~16 8 120 150 80 VSBU-120-18 16~21 6.67 120 180 80 VSBU-120-24 21~27 5 120 240 80 VSBU-120-30 27~33 4 120 300 80 VSBU-120-36 33~40 3.33 120 360 80 VSBU-120-48 40~50 2.5 120 480 80 PART NUMBER KEY VSBU-120 - XX - X Base Number Output Voltage Power Fail Detect “Blank” = No P = Yes cui.com

Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VSBU-120 │ DESCRIPTION: AC-DC POWER SUPPLY date 02/07/2013 │ page 2 of 4 INPUT parameter conditions/description min typ max units voltage 90 260 Vac frequency 47 63 Hz at 115 Vac, full load 1.7 A current at 230 Vac, full load 1.0 A at 115 Vac, 25°C, full load, cold start 30 37 A inrush current at 230 Vac, 25°C, full load, cold start 65 75 A power factor corrections full load at 90 ~ 260 Vac 0.95 0.97 1.0 OUTPUT parameter conditions/description min typ max units line regulation full load 0.5 1 % load regulation at 230 Vac 3 5 % temperature coefficient all output -0.04 0.04 %/°C transient response full load to half load at 100 Vac 4 ms start-up full load at 100 Vac 0.3 1 2 s hold-up full load at 110 Vac 16 ms PROTECTIONS parameter conditions/description min typ max units over voltage protection 112 132 % over current protection 110 150 % SAFETY & COMPLIANCE parameter conditions/description min typ max units primary to secondary 4,242 Vdc isolation voltage primary to earth ground 2,121 Vdc isolation resistance test voltage of 500 Vdc 50 MΩ safety approvals UL 60950-1 2nd edition, EN 60950-1 2nd edition EMI/EMC CISPR 22 class B, FCC part-15 class B leakage current full load at 240 Vac 0.4 0.75 mA RoHS compliant yes MTBF MIL-HDSK-217F, 25°C ambient 100,000 hrs ENVIRONMENTAL parameter conditions/description min typ max units operating temperature 0 70 °C storage temperature -40 85 °C operating humidity non-condensing 5 95 % storage humidity 0 75 % cui.com

Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VSBU-120 │ DESCRIPTION: AC-DC POWER SUPPLY date 02/07/2013 │ page 3 of 4 DERATING CURVES output power vs. ambient temperature 100 ) 80 % ( d 60 oa 50 L 40 20 0 10 20 30 40 50 60 70 Ambient Temperature (°C) MECHANICAL DRAWING units: mm[inches] tolerance: ±0.5mm 27.6 1.087 0.5 M3XP0.5(MOUNTING HOLES)X4 40.0 1.575 20.3 0.799 0.5 0.5 127.0 5.000 0.5 115.6 4.551 5.5 0.217 0.5 5.7 0.224 33.6 1.323 0.5 0.5 0.5 14.2 0.560 76.2 3.000 0.5 0.5 76.2 3.000 65.3 2.571 0.5 0.5 L N G 13 CN2 1 V1 10.9 0.429 3.0 MAX 2 V1 0.5 4.0(MOUNTING HOLES)X4 3 V1 CN1 30.8 1.213 20.3 0.799 4 V1 0.5 0.5 5 V1 1 ac line 6 V1 2 ac neutral 7 com 3 ground 27.6 1.087 0.5 8 com 9 com 10 com 11 com note: 12 com 1. Input connector mates with Molex housing 09-50-3051 and Molex 2478 or 2578 series crimp terminal. 13 n/c 2. Output connector mates with Molex housing 09-50-3031 and *pin 13 for optional Molex 2478 or 2578 series crimp terminal. power fail detect cui.com

Additional Resources: Product Page | 3D Model CUI Inc │ SERIES: VSBU-120 │ DESCRIPTION: AC-DC POWER SUPPLY date 02/07/2013 │ page 4 of 4 REVISION HISTORY rev. description date 1.0 initial release 11/19/2010 1.01 applied new spec template 02/29/2012 1.02 V-Infinity branding removed 06/26/2012 1.03 safety marks updated 08/14/2012 1.04 updated derating curve 02/07/2013 The revision history provided is for informational purposes only and is believed to be accurate. Headquarters 20050 SW 112th Ave. Fax 503.612.2383 Tualatin, OR 97062 cui.com 800.275.4899 techsupport@cui.com CUI offers a two (2) year limited warranty. Complete warranty information is listed on our website. CUI reserves the right to make changes to the product at any time without notice. Information provided by CUI is believed to be accurate and reliable. However, no responsibility is assumed by CUI for its use, nor for any infringements of patents or other rights of third parties which may result from its use. CUI products are not authorized or warranted for use as critical components in equipment that requires an extremely high level of reliability. A critical component is any component of a life support device or system whose failure to perform can be reasonably expected to cause the failure of the life support device or system, or to affect its safety or effectiveness.