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VSK-S5-24UA
PCB MOUNT AC - DC CONVERTERS
⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.
- Manufacturer: BEL / PARTNER STOCK
- Product type: AC / DC PCB Mount Power Supplies
- SVHC: No SVHC (25-Jun-2025)
| Delivery and price | |
|---|---|
| Units per pack | 12 |
| Price | 25.09 € |
| Current stock | 200+ |
| Lead time | 30 days |
Datasheet
Additional Resources: Product Page | 3D Model **date** 12/14/2022 **page** 1 of 6 ## **SERIES:** VSK-S5 **DESCRIPTION:** AC-DC POWER SUPPLY |**SERIES:**VSK-S5**DESCRIPTION:**AC-DC POWER SUPPLY<br>**MODEL**<br>**output**<br>**voltage**<br>(Vdc)<br>VSK-S5-3R3UA*<br>3.3<br>VSK-S5-5UA*<br>5<br>VSK-S5-9UA*<br>9<br>VSK-S5-12UA<br>12<br>**FEATURES**<br>• up to 5.5 W continuous output<br>• compact board mount design<br>• universal input (85~264 Vac/110~370 Vdc)<br>• single regulated output from 3.3~24 Vdc<br>• over voltage, over temperature, and short circuit protections<br>• UL/cUL safety approvals<br>• efficiency up to 83%<br>mols CWA s CE ca|AC-DC POWER SUPPLY<br>**output**<br>**current**<br>**output**<br>**power**<br>**ripple**<br>**and noise1**<br>**max**<br>(mA)<br>**max**<br>(W)<br>**max**<br>(mVp-p)<br>**max**<br>(%)<br>1250<br>4.125<br>120<br>74<br>1000<br>5<br>120<br>78<br>550<br>5<br>100<br>78<br>420<br>5<br>100<br>80<br>TINUED|AC-DC POWER SUPPLY<br>**output**<br>**current**<br>**output**<br>**power**<br>**ripple**<br>**and noise1**<br>**max**<br>(mA)<br>**max**<br>(W)<br>**max**<br>(mVp-p)<br>**max**<br>(%)<br>1250<br>4.125<br>120<br>74<br>1000<br>5<br>120<br>78<br>550<br>5<br>100<br>78<br>420<br>5<br>100<br>80<br>TINUED|AC-DC POWER SUPPLY<br>**output**<br>**current**<br>**output**<br>**power**<br>**ripple**<br>**and noise1**<br>**max**<br>(mA)<br>**max**<br>(W)<br>**max**<br>(mVp-p)<br>**max**<br>(%)<br>1250<br>4.125<br>120<br>74<br>1000<br>5<br>120<br>78<br>550<br>5<br>100<br>78<br>420<br>5<br>100<br>80<br>TINUED|AC-DC POWER SUPPLY<br>**output**<br>**current**<br>**output**<br>**power**<br>**ripple**<br>**and noise1**<br>**max**<br>(mA)<br>**max**<br>(W)<br>**max**<br>(mVp-p)<br>**max**<br>(%)<br>1250<br>4.125<br>120<br>74<br>1000<br>5<br>120<br>78<br>550<br>5<br>100<br>78<br>420<br>5<br>100<br>80<br>TINUED| |---|---|---|---|---| |VSK-S5-15UA*<br>15|333|5|100|82| |VSK-S5-24UA*<br>24|230|5.5|100|83| ## **FEATURES** - up to 5.5 W continuous output - compact board mount design - universal input (85~264 Vac/110~370 Vdc) - single regulated output from 3.3~24 Vdc - over voltage, over temperature, and short circuit protections - UL/cUL safety approvals - efficiency up to 83% 2. * Discontinued model. **PART NUMBER KEY - - VSK S5 XXUA** Base Number Output Voltage **cui** .com Additional Resources: Product Page | 3D Model **date** 12/14/2022 **page** 2 of 6 **CUI Inc SERIES:** VSK-S5 **DESCRIPTION:** AC-DC POWER SUPPLY ## **INPUT** |**INPUT**||||| |---|---|---|---|---| |**parameter**<br>voltage<br>frequency<br>current<br>inrush current<br>input fuse|**conditions/description**<br>at 110 Vac<br>at 230 Vac<br>at 110 Vac<br>at 230 Vac<br>recommended external 1 A/250 V, slow-blow type|**min**<br>85<br>110<br>47|110<br>70<br>10<br>20|**max**<br>**units**<br>264<br>370<br>Vac<br>Vdc<br>63<br>Hz<br>mA<br>mA<br>A<br>A<br>D| ||||±0.02|%/°C| |**OUTPUT**|||||| |---|---|---|---|---|---| |**parameter**|**conditions/description**|**min**||**max**|**units**| ||3.3 Vdc model|||4000|| ||5 Vdc model|||4000|| |capcitive load1<br>9 Vdc model<br>12 Vdc model<br>15 Vdc model<br>24 Vdc model<br>line regulation<br>load regulation<br>at 10~100% load<br>voltage set accuracy<br>3.3 Vdc model<br>all other models<br>hold-up time<br>at 110 Vac<br>at 230 Vac<br>switching frequency<br>Notes:<br>1. Test without external circuit<br>**PROTECTIONS**<br>**parameter**<br>**conditions/description**<br>**min**<br>over voltage protection<br>shutdown<br>over current protection<br>auto recovery<br>110<br>short circuit protection<br>hiccup, auto recovery<br>**SAFETY & COMPLIANCE**<br>**parameter**<br>**conditions/description**<br>**min**<br>isolation voltage<br>for 1 minute<br>4,000<br>safety approvals<br>UL60950-1<br>safety class<br>Class II<br>conducted emissions<br>CISPR22/EN55022, Class B<br>radiated emissions<br>CISPR22/EN55022, Class B<br>ESD<br>IEC/EN61000-4-2 Class B, contact ±6 kV / air ±8 kV<br>ISCONTI|||±0.5<br>±1<br>±3<br>±2<br>12<br>80|1000<br>820<br>820<br>330<br>140<br>**max**<br>**max**|%<br>%<br>%<br>%<br>ms<br>ms<br>kHz<br>**units**<br>%<br>**units**<br>Vac| |radiated immunity|IEC/EN61000-4-3 Class A, 10V/m||||| ||IEC/EN61000-4-4 Class B, ±2 kV||||| ||||||| ||IEC/EN61000-4-5 Class B, ±1 kV / ±2 kV||||| |surge|IEC/EN61000-4-5 Class B, +2 kV/+4 kV (external circuit required,||see figure 2)||| |conducted immunity|IEC/EN61000-4-6 Class A, 10 Vr.m.s||||| |PFM|IEC/EN61000-4-8 Class A, 10 A/m||||| **cui** .com Additional Resources: Product Page | 3D Model **date** 12/14/2022 **page** 3 of 6 **CUI Inc SERIES:** VSK-S5 **DESCRIPTION:** AC-DC POWER SUPPLY ## **SAFETY & COMPLIANCE (CONTINUED)** **==> picture [590 x 590] intentionally omitted <==** **----- Start of picture text -----**<br> parameter conditions/description min max units<br>voltage dips & interruptions IEC/EN61000-4-11 Class B, 0%-70%<br>300,000 hours<br>RoHS 2011/65/EU<br>ENVIRONMENTAL<br>parameter conditions/description min max units<br>operating temperature see derating curves -25 70 °C<br>storage temperature -25 105 °C<br>storage humidity non-condensing 95 %<br>DERATING CURVES<br>INPUT VOLTAGE DERATING CURVE INPUT VOLTAGE DERATING CURVE<br>TEMPERATURE DERATING CURVE (Vac) (Vdc)<br>120 120 120<br>_~ 100 _~ 100 _~ 100<br>=é<br>*80 . & 80 - 80<br>2 60 ! 2 60 2 60<br>2 50 1 % 50 8 50<br>2 40 , 2 40 2 40<br>) 1 s ]<br>fe) 1 fe) fe)<br>20 i 20 20<br>0 ) 0)<br>-40 -25 0 20 40 55 7080 100 85 110 240 264 100 140 340 370<br>Operating Temperature (C°) Input Voltage (Vac) Input Voltage (Vdc)<br>EFFICIENCY CURVES<br>EFFICIENCY VS INPUT LOAD EFFICIENCY VS OUTPUT LOAD<br>(full load) (at 230 Vac)<br>90 90<br>= 80 “y — 80 Key<br>3 +5 | a = a” a oe | | ee<br>ed | VSK-S5-24UA -S5-!<br>3 a a IA| ves<br>=us 6560 || || | =VSK-S5-12UAVSK-S5-5UA 3uw 6s60 pt}rttt| ft| tttt tt ——VSK-S5-12UAVSK-S5-5UA<br>5s || ott! | | i} tt<br>Cy sTTrrtttei<br>85 110 180 230 264 10 20 30 40 50 60 70 80 90 100<br>Input Voltage (Vac) Output Current (%)<br>D<br>DISCONTIN<br>**----- End of picture text -----**<br> **cui** .com **==> picture [590 x 752] intentionally omitted <==** **----- Start of picture text -----**<br> Additional Resources: Product Page | 3D Model<br>CUI Inc � SERIES: VSK-S5 � DESCRIPTION: AC-DC POWER SUPPLY date 12/14/2022 � page 4 of 6<br>MECHANICAL<br>parameter conditions/description min ��� max units<br>dimensions 50.8 x 25.4 x 15.16 (2.00 x 1.00 x 0.597 inch) mm<br>material UL94V-0<br>weight 31 g<br>MECHANICAL DRAWING<br>units: mm [inch]<br>tolerance: ±0.50 [±0.020]<br>pin section tolerance: ±0.10 [±0.004]<br>PIN CONNECTIONS<br>PIN ��������<br>1 AC(N)<br>2 AC(L)<br>3 +Vo<br>4 -Vo<br>Front View<br>∅1.00[0.039]<br>Grid Size: 2.54 x 2.54mm<br>∅1.50 [0.059]<br>1 3 2<br>4 4<br>2 1 3<br>45.72 [1.800]<br>Top View<br>50.80 [2.000]<br>PCB LAYOUT<br>Bottom View<br>cui .com<br>DISCONTINUED<br>6.00 [0.236] 15.16[0.597]<br>]<br>10.16 [0.400]<br>0.32 [0.800<br>25.40 [1.000] 2<br>**----- End of picture text -----**<br> Additional Resources: Product Page | 3D Model **date** 12/14/2022 **page** 5 of 6 **CUI Inc SERIES:** VSK-S5 **DESCRIPTION:** AC-DC POWER SUPPLY ## **TYPICAL APPLICATION CIRCUIT** ## **Table 1** |||||||||||||||**Table 1**|**Table 1**|**Table 1**|**Table 1**|**Table 1**|**Table 1**|**Table 1**|**Table 1**| |---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---| ||||||||**Figure 1**|**Figure 1**||||||Recommended External Circuit Components|||||||| ||||FUSE<br>—<br>—|||NTC<br>— om<br>a|AC (L)|+Vo|c1|C2||||MODEL|||C11|C21||NTC|MOV| ||.<br>Vin|te||g<br>a|||AC-DC|||+|R-Load|||VSK-S5-3R3UA|||1|220||1 A/250 V<br>12D-5|S14K350| |||||||||||||||VSK-S5-5UA|||1|220||1 A/250 V<br>12D-5|S14K350| ||||||||AC (N)|-Vo||||||VSK-S5-9UA|||1|100||1 A/250 V<br>12D-5|S14K350| |||||||||||||||VSK-S5-12UA|||1|100||1 A/250 V<br>12D-5|S14K350| |||||||||||||||VSK-S5-15UA|||1|100||1 A/250 V<br>12D-5|S14K350| |||||||||||||||VSK-S5-24UA|||1|47||1 A/250 V<br>12D-5|S14K350| |||or above.|or above.||||||||||||||||||| |**EMC RECOMMENDED CIRCUIT**<br>**Figure 2**<br>DISCONTI<br>FUSE<br>| Mov cx<br>_L1<br>LCM<br>|<br>NTG<br>c1<br>c2<br>—<br>oe<br>Mee AC (1)<br>+Vo<br>cy1<br>1<br>A<br>ay<br>I<br>+<br>Vin<br>D<br>|<br>AC-DC<br>R-Load<br>ms<br>I<br>cy2<br>|<br>AC (N)<br>-Vo<br>aL<br>I<br>I||||||||||||||||Recommended External Circuit Components<br>1A/250V, slow fusing,<br>necessary<br>MOV<br>S14K350<br>CY1, CY2<br>CX<br>LCM<br>2.2mH<br>L1<br>C1, C2<br>see Table 1<br>**Table 2**|||||| |Note:||1. All|specifications||measured at||Ta=25°C, humidity <75%,|||nominal input|voltage,|and rated||output load, unless||otherwise specified.|||||| ||||||||||||**cui**.com||||||||||| Additional Resources: Product Page | 3D Model **date** 12/14/2022 **page** 6 of 6 **CUI Inc SERIES:** VSK-S5 **DESCRIPTION:** AC-DC POWER SUPPLY ## **REVISION HISTORY** |**rev.**<br>**description**<br>**date**<br>1.0<br>initial release<br>07/26/2011<br>1.01<br>new template applied<br>03/06/2012<br>1.02<br>08/21/2012<br>1.03<br>12/10/2012<br>1.04<br>updated spec<br>04/01/2013<br>1.05<br>updated spec<br>08/23/2013<br>1.06<br>updated spec<br>01/08/2014<br>1.07<br>changed internal IC, updated datasheet<br>06/05/2015<br>ED|**rev.**<br>**description**<br>**date**<br>1.0<br>initial release<br>07/26/2011<br>1.01<br>new template applied<br>03/06/2012<br>1.02<br>08/21/2012<br>1.03<br>12/10/2012<br>1.04<br>updated spec<br>04/01/2013<br>1.05<br>updated spec<br>08/23/2013<br>1.06<br>updated spec<br>01/08/2014<br>1.07<br>changed internal IC, updated datasheet<br>06/05/2015<br>ED| |---|---| |1.08<br>companylogo updated<br>10/30/2020|| |1.09<br>updated<br>06/01/2022|| |**Headquarters**<br>20050 SW 112th Ave.<br>Tualatin, OR 97062<br>**cui**.com<br>1.10<br>discontinued modelsVSK-S5-15UA, VSK-S5-24UA, VSK-S5-9UA,<br>VSK-S5-3R3UA<br>11/11/2022<br>1.11<br>discontinued model VSK-S5-5UA<br>12/14/2022<br>The revision history provided is for informational purposes only and is believed to be accurate.<br>DISCONTI<br><F CUIINC|| |**800.275.4899**<br>techsupport@cui.com<br>a bel group|| |CUI offers a two (2) year limited warranty.<br>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
Updated at April 27, 2026
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