PSK-30D-3

AC/DC PCB Mount Power Supply (PSU), ITE & Household, 1 Output, 19.8 W, 3.3 VDC, 6 A

⚠️ Reference pricing provided. In case of supply shortages, we will connect you with our trusted procurement partners to ensure your project's continuity.

Manufacturer: CUI
Product type: AC / DC PCB Mount Power Supplies
Available until stocks are exhausted
SVHC: To Be Advised
Depth: 69.5mm
Width: 39mm
Height: 24mm
Product Range: PSK-30D Series
No. of Outputs: 1 Output
Output Power Max: 19.8W
Input Voltage VAC: 85V AC to 305V AC
Power Supply Output Type: Fixed
Output Current - Output 1: 6A
Output Current - Output 2: -
Output Current - Output 3: -
Output Voltage - Output 1: 3.3VDC
Output Voltage - Output 2: -
Output Voltage - Output 3: -
Power Supply Applications: ITE & Household

Delivery and price
Units per pack	10
Price	9.44 €
Current stock	25+
Lead time	30 days

Datasheet

Additional Resources:    Product Page ~~Oo~~ |    PCB Footprint 

**date** 10/25/2021 **page** 1 of 8 

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

## **FEATURES** 

- wide input range (85 ~ 305 Vac) 

- wide operating temperature range (-40 to +85 C) 

- Class B emissions 

- certified to 62368, 61558, and 60335 safety standards 

- over voltage, over current, short circuit protections 

- input over voltage category III for fixed installations 

|**MODEL**|**output**<br>**voltage**|**output**<br>**current**|**output**<br>**power**|**ripple**<br>**and noise1**|**efficiency2**|
|---|---|---|---|---|---|
|||**max**|**max**|**max**|**typ**|
||(Vdc)|(A)|(W)|(mVp-p)|**(%)**|
|PSK-30D-3|3.3|6.0|19.8|100|85|
|PSK-30D-5|5|6.0|30.0|100|86|
|PSK-30D-9|9|3.4|30.6|100|88|
|PSK-30D-12|12|2.5|30.0|100|90|
|PSK-30D-15|15|2.0|30.0|100|90|
|PSK-30D-24|24|1.3|31.2|150|88|
|PSK-30D-48|48|0.63|30.2|150|90|



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 30D XX X** 

Base Number 

Output Voltage 

Mounting Style: blank = board mount T = chassis mount DIN = DIN-rail mount 

**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 2 of 8 

|**INPUT**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
||ac input|85||305|Vac|
|voltage|dc input (3.3/5/9/12/15/24 Vdc output models)|100||430|Vdc|
||dc input (48 Vdc output model)|120||430|Vdc|
|frequency||47||63|Hz|
|current|at 115 Vac<br>at 230 Vac|||0.75<br>0.5|A<br>A|
|inrush current|at 115 Vac<br>at 230 Vac||25<br>50||A<br>A|
|leakage current|at 277 Vac/50 Hz|||0.1|mA|
|**OUTPUT**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
||3.3 Vdc output model|||6,600|μF|
||5 Vdc output model|||6,600|μF|
||9 Vdc output model|||4,400|μF|
|capacitive load|12 Vdc output model|||4,400|μF|
||15 Vdc output model|||3,300|μF|
||24 Vdc output model|||1,000|μF|
||48 Vdc output model|||470|μF|
|output voltage accuracy|3.3 Vdc output model<br>all other output models||±3<br>±2||%<br>%|
|line regulation|at full load||±0.5||%|
||0~100% load|||||
|load regulation|3.3 Vdc output model<br>5 Vdc output model||±2<br>±1.5||%<br>%|
||all other output models||±1||%|
|hold-up time|at 115 Vac<br>at 230 Vac||10<br>50||ms<br>ms|
|switching frequency|||65||kHz|
||at 230 Vac|||||
|no load power consumption|3.3, 5, 9, 12, 15, 24 Vdc output model|||0.1|W|
||48 Vdc output model|||0.15|W|
|**PROTECTIONS**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
||output voltage hiccup|||||
||3.3 Vdc output model|||6.3|Vdc|
|over voltage protection|5, 9, 12 Vdc output model<br>15 Vdc output model|||16<br>25|Vdc<br>Vdc|
||24 Vdc output model|||35|Vdc|
||48 Vdc output model|||60|Vdc|
|over current protection|auto recovery|110|||%|
|short circuit protection|continuous, auto recovery, hiccup|||||
|**SAFETY & COMPLIANCE**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|isolation voltage|input to output, 1 min., <5mA|4,200|||Vac|
|safety approvals|certifed to 62368:  EN, UL<br>certifed to 60335:  EN<br>certifed to 61558:  EN|||||
|safety class|Class II|||||
|EMI/EMC|CISPR32/EN55032  CLASS B<br>EN55014-1|||||



**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 3 of 8 

## **SAFETY & COMPLIANCE** 

|ESD|IEC/EN61000-4-2  Contact ±8KV/Air ±15KV, perf. Criteria A<br>IEC/EN55014-2, perf. Criteria A|IEC/EN61000-4-2  Contact ±8KV/Air ±15KV, perf. Criteria A<br>IEC/EN55014-2, perf. Criteria A||||
|---|---|---|---|---|---|
|radiated immunity|IEC/EN61000-4-3 10V/m, perf. Criteria A<br>IEC/EN55014-2, perf. Criteria A|||||
||IEC/EN61000-4-4 ±2KV, perf. Criteria A|||||
|EFT/burst|IEC/EN61000-4-4 ±4KV (See Fig.2 for recommended|circuit), perf.|Criteria A|||
||IEC/EN55014-2, perf. Criteria A|||||
||IEC/EN61000-4-5  line to line ±2KV, perf. Criteria A|||||
|surge|IEC/EN61000-4-5  line to line ±2KV/line to ground ±4KV (See Fig.2<br>Criteria A||for recommended circuit),||perf.|
||IEC/EN55014-2, perf. Criteria A|||||
|conducted immunity|IEC/EN61000-4-6  10 Vr.m.s, perf. Criteria A<br>IEC/EN55014-2, perf. Criteria A|||||
|voltage dips and interruption|IEC/EN61000-4-11  0%, 70%, perf. Criteria B<br>IEC/EN55014-2, perf. Criteria B|||||
|MTBF|MIL-HDBK-217F at 25°C|500,000|||hours|
|RoHS|yes|||||
|**ENVIRONMENTAL**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|operating temperature||-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**|
||DIP: 69.50 x 39.00 x 24.00||||mm|
|dimensions|chassis mount: 96.10 x 54.00 x 32.50||||mm|
||DIN-rail: 96.10 x 54.00 x 37.10||||mm|
||DIP||100||g|
|weight|chassis mount||147||g|
||DIN-rail||190||g|
|case material|Black plastic, fame-retardant and heat-resistant (UL94V-0)|||||
|cooling method|natural convection|||||



**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 4 of 8 

## **MECHANICAL DRAWING** 

## **Board mount** 

units: mm [inch] pin diameter tolerance: ±0.10 [±0.004] tolerance: ±0.50 [±0.020] 

|PIN CONNECTIONS|PIN CONNECTIONS|
|---|---|
|PIN|Function|
|1|AC(L)|
|2|AC(N)|
|3|+Vo|
|4|-Vo|



**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 5 of 8 

## **MECHANICAL DRAWING (CONTINUED)** 

## **Chassis mount** 

units: mm [inch] wire range: 24~12 AWG tightening torque: Max 0.4 N·m tolerance: ±1.0 [±0.039] 

|PIN CONNECTIONS|PIN CONNECTIONS|
|---|---|
|PIN|Function|
|1|NC|
|2|AC(N)|
|3|AC(L)|
|4|+Vo|
|5|NC|
|6|NC|
|7|NC|
|8|-Vo|



Note: NC = no connection 

## **DIN-rail mount** 

units: mm [inch] wire range: 24~12 AWG tightening torque: Max 0.4 N·m mounting rail:  TS35, must be connected to safety ground tolerance: ±1.0 [±0.039] 

|PIN CONNECTIONS|PIN CONNECTIONS|
|---|---|
|PIN|Function|
|1|NC|
|2|AC(N)|
|3|AC(L)|
|4|+Vo|
|5|NC|
|6|NC|
|7|NC|
|8|-Vo|



Note: NC = no connection 

**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 6 of 8 

## **APPLICATION DESIGN REFERENCE** 

Output Filtering Components: 

C1 should be a ceramic capacitor and the TVS will help protect downstream electronics in the unlikely event of converter failure. 

## **Figure 1** 

**Table 1** 

|Part No.|C1 (µF / V)|C2 (µF / V)|TVS|
|---|---|---|---|
|PSK-30D-3|1 / 100|10 / 50|SMBJ7.0A|
|PSK-30D-5||10 / 50|SMBJ7.0A|
|PSK-30D-9||10 / 50|SMBJ12A|
|PSK-30D-12||10 / 50|SMBJ20A|
|PSK-30D-15||10 / 50|SMBJ20A|
|PSK-30D-24||10 / 50|SMBJ30A|
|PSK-30D-48||10 / 63|SMBJ64A|



Note:  2A / 300V slow-blow fuse integrated into unit. 

## **EMC RECOMMENDED CIRCUIT** 

## **Figure 2** 

## **Table 2** 

||**Table 2**|
|---|---|
|Components|Recommended Value|
|FUSE|2 A/300 V, slow-blow, required|
|MOV|S14K350|
|CY1/CY2|1 nF/400 Vac|
|LCM|10 mH|



**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 7 of 8 

## **DERATING CURVE** 

## **EFFICIENCY CURVES** 

**cui** .com 

Additional Resources:    Product Page    |    PCB Footprint 

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

**date** 10/25/2021 **│ page** 8 of 8 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|10/25/2021|



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

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

**Headquarters** 20050 SW 112th Ave. Tualatin, OR 97062 **800.275.4899** 

Fax 503.612.2383 **cui** .com 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.

Updated at June 3, 2026

About Novapart

Novapart is a B2B electronic component broker specialising in stock shortages and cost reduction. We source hard-to-find parts and identify compliant alternatives across a catalogue of 410,000+ components from 500+ manufacturers.

Learn more →

Stock Shortage Specialist

When a component is unavailable, discontinued or has an unacceptable lead time, we tap into our network of vetted European and Asian distributors to source what you need — without compromising on quality or traceability.

Request a quote →

Compliant Alternatives

We identify pin-to-pin, electrically equivalent substitutes that meet the same certifications (RoHS, AEC-Q100, REACH) as your original specification — validated against datasheets, not just part numbers. Often at a lower cost.

BOM Analysis service →