PSK-30F-48

**date** 09/19/2025 **page** 1 of 6 

## **SERIES:** PSK-30F **DESCRIPTION:** INTERNAL AC-DC POWER SUPPLY **│** 

## **FEATURES** 

- universal input (85~305 Vac, 100~430 Vdc) 

- -40~85°C operating range 

- short circuit, under voltage, and over current protection 

- isolation voltage 4,000 Vac 

- certified to UL/EN/IEC 62368-1 

- designed to meet EN 61558-1, EN 60335-1 

- CISPR32/EN55032 Class B with application circuit 

- Class II 

- low stand-by power consumption (<0.3 W) 

- high efficiency up to 89% 

- 2,000 m operating altitude 

- OVC III 

|• high efficiency up to 89%<br>• 2,000 m operating altitude<br>• OVC III<br>HowsCWALs<br>C€||||||
|---|---|---|---|---|---|
|**MODEL**<br>HowsCWALs<br>C €|**output**<br>**voltage**|**output**<br>**current**|**output**<br>**power**|**ripple**<br>**and noise1**|**efficiency2**|
|||**max**|**max**|**max**|**typ**|
||(Vdc)|(A)|(W)|(mVp-p)|**(%)**|
|PSK-30F-3|3.3|6.0|19.8|150|85|
|PSK-30F-5|5|6.0|30.0|150|86|
|PSK-30F-9|9|3.33|30.0|150|88|
|PSK-30F-12|12|2.5|30.0|150|89|
|PSK-30F-15|15|2.0|30.0|150|89|
|PSK-30F-24|24|1.29|31.0|150|88|
|PSK-30F-48|48|0.625|30.0|150|89|



Notes:   1. At full load, nominal input, 20 MHz bandwidth oscilloscope, with 1 µF ceramic and 10 µF electrolytic capacitors on the output. 

2. At 230 Vac input. 

   3. All specifications are measured at Ta=25°C, humidity <75%, nominal input voltage, and rated output load unless otherwise specified. 

## **PART NUMBER KEY** 

## **- - PSK 30F XX** 

Base Number 

Output Voltage 

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**CUI Inc │ SERIES:** PSK-30F **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 09/19/2025 **│ page** 2 of 6 

|**INPUT**|||
|---|---|---|
|**parameter**|**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|voltage|AC input|85<br>305<br>Vac|
||DC input|48 Vdc output model<br>120<br>430<br>Vdc|
|||all other outputs<br>100<br>430<br>Vdc|
|frequency||47<br>50~60<br>63<br>Hz|
|current|at 115 Vac<br>at 230 Vac|1.0<br>0.5<br>A<br>A|
|inrush current|at 115 Vac<br>at 230 Vac|25<br>50<br>A<br>A|
|leakage current|at 230 Vac/50 Hz|0.1<br>mA|
|recommended external input<br>fuse|2A/300V, slow-blow, required||
|**OUTPUT**|||
|**parameter**|**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|capacitive load|3.3, 5 Vdc output model<br>9, 12 Vdc output model<br>15 Vdc output model<br>24 Vdc output model<br>48 Vdc output model|6,600<br>4,400<br>3,300<br>1,000<br>470<br>μF<br>μF<br>μF<br>μF<br>μF|
|output voltage accuracy|3.3 Vdc output model<br>all other outputs|±3<br>±2<br>%|
|line regulation|at full load|±0.5<br>%|
|load regulation|0~100% load|3.3 Vdc output model<br>±2.0|
|||5 Vdc output model<br>±1.5<br>%|
|||all other outputs<br>±1.0<br>%|
|hold-up time|at 230 Vac|55<br>ms|
|temperature coefcient||±0.02<br>%/°C|
|no load power consumption|at 230 Vac|0.3<br>0.55<br>W|
|**PROTECTIONS**|||
|**parameter**|**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**||
|over current protection|auto recovery<br>110<br>%||
|short circuit protection|continuous, auto recovery||
|**SAFETY & COMPLIANCE**|||
|**parameter**<br>**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**|||
|isolation voltage<br>input to output for 1 minute, 5mA max<br>4,000<br>Vac|||
|safety approvals<br>certified to 62368-1: UL, EN, IEC<br>designed to meet 61558-1: EN<br>designed to meet 60335-1: EN|||
|safety class<br>Class II|||
|conducted emissions<br>CISPR32/EN55032 CLASS B, EN55014-1|||
|radiated emissions<br>CISPR32/EN55032 CLASS B, EN55014-1|||
|ESD<br>IEC/EN61000-4-2  Contact ±6 kV; Air ±8 kV, perf. Criteria A|||
|radiated immunity<br>IEC/EN61000-4-3  10 V/m, perf. Criteria A<br>IEC/EN55014-2, perf. Criteria A|||
|EFT/burst<br>IEC/EN61000-4-4  ±2 kV, perf. Criteria B<br>IEC/EN61000-4-4  ±4 kV, perf. Criteria A (see Fig. 2 & 3 for recommended circuit)<br>IEC/EN55014-2, perf. Criteria B|||



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**CUI Inc │ SERIES:** PSK-30F **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 09/19/2025 **│ page** 3 of 6 

## **SAFETY & COMPLIANCE (CONTINUED)** 

|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|---|---|---|---|---|---|
||IEC/EN61000-4-5  line to line ±2 kV, perf. Criteria B|||||
|surge|IEC/EN61000-4-5  line to line ±2 kV; line to PE ±4 kV, perf. Criteria A (see Fig. 2 & 3 for recommended<br>circuit)|IEC/EN61000-4-5  line to line ±2 kV; line to PE ±4 kV, perf. Criteria A (see Fig. 2 & 3 for recommended|||IEC/EN61000-4-5  line to line ±2 kV; line to PE ±4 kV, perf. Criteria A (see Fig. 2 & 3 for recommended|
||IEC/EN55014-2, perf. Criteria A|||||
|conducted immunity|IEC/EN61000-4-6  10 Vrms, perf. Criteria A|||||
|MTBF|MIL-HDBK-217F at 25°C|500,000|||hours|
|RoHS|yes|||||
|**ENVIRONMENTAL**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|operating temperature|see derating curves|-40||85|°C|
|storage temperature||-40||85|°C|
|storage humidity||0||95|%|
|**SOLDERABILITY**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|wave soldering|5~10 seconds max|255|260|265|°C|
|hand soldering|3~5 seconds max|350|360|370|°C|
|**MECHANICAL**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|dimensions|69.50 x 39.00 x 24.00 [2.736 x 1.535 x 0.945 inches]||||mm|
|weight|||102||g|
|case material|black plastic, flame-retardant and heat-resistant (UL94V-0)|||||
|cooling method|natural convection|||||



## **DERATING CURVES** 

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**CUI Inc │ SERIES:** PSK-30F **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 09/19/2025 **│ page** 4 of 6 

## **EFFICIENCY CURVES** 

## **MECHANICAL DRAWING** 

units: mm [inch] pin diameter tolerance: ±0.1 [±0.004] tolerance: ±0.80 [±0.031] 

|PIN CONNECTIONS|PIN CONNECTIONS|
|---|---|
|PIN|Function|
|1|AC(N)|
|2|AC(L)|
|4|-Vo|
|5|+Vo|



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**CUI Inc │ SERIES:** PSK-30F **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 09/19/2025 **│ page** 5 of 6 

## **APPLICATION DESIGN REFERENCE** 

## **Figure 1** 

|Part No.|C1|C2|D1|
|---|---|---|---|
|PSK-30F-3.3/5|1µF/16V|220µF/16V|see note<br>below|
|PSK-30F-9/12||100µF/25V||
|PSK-30F-15/24|1µF/35V|100µF/35V||
|PSK-30F-48|1µF/100V|10µF/63V||



Note:     D1 is a TVS transistor that can protect the downstreamcircuit in case of module abnormalities. 

It is recommended to choose a model that is 1.2 times the output voltage. 

## **EMC RECOMMENDED CIRCUIT** 

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Figure 2<br>**----- End of picture text -----**<br>


## **Figure 3** 

Note: When the output of the product needs to be connected to PE or connected to PE through Y capacitor.Recommended. 

**Table 2** 

|Components|Recommended Value|Components|Recommended Value|
|---|---|---|---|
|FUSE|3.15A/300V, slow-blow, required|CY1, CY2|2.2nF/400Vac|
|MOV|14D561K|CY3, CY4|1.0nF/400Vac|
|R1|6.8Ω/5W wire wound resistor, required|GDT|300V/1kA|
|Cx|0.33μF/305Vac|LCM|20mH, common mode inductance|
|L1|1.2mH, 0.5A|Rx1, Rx2, Rx3, Rx4,<br>Rx5, Rx6|1.5MΩ/1206|



Notes:  ii    4. The input voltage should not exceed the specified range value, otherwise it may cause permanent and irreparable damage. 

iiii i     5. It is recommended to use at a load of over 5%. If the load is below 5%, the ripple index of the product may exceed the specifications, but it does not affect the reliability of the product. 

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**CUI Inc │ SERIES:** PSK-30F **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 09/19/2025 **│ page** 6 of 6 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|09/19/2025|



The revision history provided is for informational purposes only and is believed to be accurate. 

**==> picture [155 x 34] intentionally omitted <==**

15575 SW Sequoia Pkwy #100 Portland, OR 97224 800.275.4899 

Fax 503.612.2383 Belfuse.com powersupport@belf.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.