# AC/DC Open Frame Power Supply (PSU), ITE, 1 Output, 85 W, 90V AC to 264V AC, Fixed

![Product image](https://novapart.co/image/farnell:4829582/)

**URL**: https://novapart.co/products/VOF-85G-24/ac-dc-open-frame-power-supply-psu-ite-1-output-85
**SKU**: VOF-85G-24
**Manufacturer**: CUI
**Category**: Power & Line Protection || Power Supplies || AC / DC Converters || AC / DC Open Frame Power Supplies
**Price**: €43.0200
**Stock**: 100+
**Lead Time**: 155 days (indicative)

## Specifications

| Parameter | Value |
|---|---|
| Svhc | No SVHC (25-Jun-2025) |
| Product Range | VOF-85G Series |
| No. Of Outputs | 1 Output |
| Input Voltage Vac | 90V AC to 264V AC |
| Power Supply Output Type | Fixed |
| Output Current - Output 1 | 3.54A |
| Output Current - Output 2 | - |
| Output Current - Output 3 | - |
| Output Current - Output 4 | - |
| Output Voltage - Output 1 | 24V |
| Output Voltage - Output 2 | - |
| Output Voltage - Output 3 | - |
| Output Voltage - Output 4 | - |
| Power Supply Applications | ITE |
| Power Rating (Forced Cooling) | - |
| Power Rating (Convection Cooling) | 85W |

## Datasheet

📄 [Download PDF](https://novapart.co/datasheet/farnell:4829582/)

**date** 07/10/2025 **page** 1 of 5 

## **SERIES:** VOF-85G **DESCRIPTION:** INTERNAL AC-DC POWER SUPPLY **│** 

## **FEATURES** 

- universal input 90 ~ 264 Vac, 47 ~ 63 Hz 

- high efficiency up to 90 % 

- 40 ~ 65 W with natural convection, 50 ~ 85 W with 10 CFM forced air cooling 

- compact size, high power density (3 x 1.5 inch) 

- low no load power consumption (<0.150 W) 

- certified to IEC/EN/UL 62368-1 

- operating temperature -20 ~ 70°C (with derating) 

- class I and class II application 

- over voltage, over temperature, over current and short-circuit protection 

- FCC Part 15 Class B 

|**MODEL**|**output**<br>**voltage**|**output**<br>**current1**|**output**<br>**power1,2**|**ripple**<br>**and noise3**|**efficiency**<br>**level**|
|---|---|---|---|---|---|
||**typ**|**max**|**max**|**typ**|**typ**|
||(Vdc)|(A)|(W)|(mVp-p)|(%)|
|VOF-85G-5|5|10.0|50|50|88|
|VOF-85G-12|12|7.10|85|120|90|
|VOF-85G-15|15|5.67|85|150|90|
|VOF-85G-18|18|4.73|85|150|90|
|VOF-85G-24|24|3.54|85|150|90|
|VOF-85G-284|28|3.04|85|150|90|
|VOF-85G-364|36|2.36|85|200|90|
|VOF-85G-48|48|1.78|85|200|90|



- Notes: 1. With forced air (10 CFM). 

2. Maximum output power with 10 CFM forced air is 50 W for 5 Vdc output model and 85 W for all other output models. Maximum output power with natural convection is  40 W for 5 Vdc output model, 60 W for 12 & 15 Vdc output models and 65 W for all other output models. 3. Ripple and noise are measured at oscilloscope 20MHz bandwidth by a 100µF electrolytic capacitor and a 0.1µF ceramic capacitor in parallel at output connector. 

## **PART NUMBER KEY** 

## **- - VOF 85G XX** 

Base Number 

Output Voltage 

**cui** .com 

**CUI Inc │ SERIES:** VOF-85G **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/10/2025 **│ page** 2 of 5 

|**INPUT**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|voltage||90|115~230|264|Vac|
|frequency||47|50~60|63|Hz|
|current|at 115 Vac / 60 Hz|||2|A|
|inrush current|at 230 Vac, cold start|||130|A|
|touch current|at 264 Vac|||0.25|mA|
|no load power consumption||||0.15|W|



## **OUTPUT** 

|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|---|---|---|---|---|---|
||5 Vdc output model|||8.00 / 10.0|A|
||12 Vdc output model|||5.00 / 7.10|A|
||15 Vdc output model|||4.00 / 5.67|A|
|output current|18 Vdc output model|||3.62 / 7.73|A|
|(natural convection/forced air5)|24 Vdc output model|||2.71 / 3.54|A|
||28 Vdc output model|||2.33 / 3.04|A|
||36 Vdc output model|||1.81 / 2.36|A|
||48 Vdc output model|||1.36 / 1.78|A|
|load regulation|||±3||%|
|transient response|10% ~ 80% at 0.2A/uS slew rate, max 100 ms recovery time|||||
|overshoot|turn-on and turn-of overshoot shall not exceed ±10% of the voltage||regulation tolerance|||
|hold-up time|at 115 Vac|8|||ms|
|switching frequency|at full load|50||100|kHz|
|Notes:<br>5. With forced air 10 CFM.||||||



## **PROTECTIONS** 

|**PROTECTIONS**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|over current protection|auto recovery|105||160|%|
||auto recovery, latch of mode|||||
||5 Vdc output model|5.75||7.75|Vdc|
||12 Vdc output model|13.80||16.20|Vdc|
||15 Vdc output model|17.25||20.25|Vdc|
|over voltage protection|18 Vdc output model|20.70||24.30|Vdc|
||24 Vdc output model|27.60||32.40|Vdc|
||28 Vdc output model|32.20||37.80|Vdc|
||36 Vdc output model|41.40||48.60|Vdc|
||48 Vdc output model|55.20||64.80|Vdc|
|over temperature protection|auto recovery, latch of mode|||||
|short circuit protection|auto recovery|||||



## **SAFETY & COMPLIANCE** 

|**parameter**|**conditions/description**<br>**min**<br>**typ**<br>**max**<br>**units**|
|---|---|
|isolation voltage|input to output, for 4 seconds<br>3,000<br>4,242<br>Vac<br>Vdc|
||input to ground, for 4 seconds<br>1,500<br>2,121<br>Vac<br>Vdc|
||secondary circuits to ground, for 4 seconds<br>500<br>Vdc|
|safety approvals6|certifed to 62368-1: IEC, EN, UL|
|safety class|class I and class II application|
|EMI/EMC|CE, EN 55032 Class B, EN 55035 for ITE standards<br>FCC Part 15 Class B and ICES-003 for ITE standards|
|MTBF|as per Telcordia (Bellcore TR-332) at 25°C<br>450,000<br>hours|
|RoHS|yes|
|Notes:<br>6. 28 V and 36 V output models|are not UL certifed.|



**cui** .com 

**CUI Inc │ SERIES:** VOF-85G **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/10/2025 **│ page** 3 of 5 

## **ENVIRONMENTAL** 

|**ENVIRONMENTAL**||||||
|---|---|---|---|---|---|
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|operating temperature|see derating curve|-20||70|°C|
|storage temperature||-20||85|°C|
|operating humidity|non-condensing|10||95|%|
|storage humidity|non-condensing|0||95|%|
|operating altitude||||2,000|m|
|**MECHANICAL**||||||
|**parameter**|**conditions/description**|**min**|**typ**|**max**|**units**|
|dimensions|76.2 × 38.1 × 32.0 [3.000 x 1.500 x 1.260 inch]||||mm|
|weight|||100||g|



## **MECHANICAL DRAWING** 

units: mm [inch] tolerance: ±0.5mm 

|**CN1**: Input Connector|
|---|
|JST B2P3-VH pitch: 7.92 mm or equivalent,<br>mates with JST VHR-3N or equivalent<br>PIN CONNECTIONS<br>PIN<br>Function|
|1<br>AC(N)<br>2<br>AC(L)<br>**CN2**: Main Output Connector<br>JST B4P-VH-B pitch: 3.96 mm or equivalent,<br>mates with JST VHR-4N or equivalent<br>PIN CONNECTIONS<br>PIN<br>Function<br>1<br>+Vo<br>2<br>+Vo<br>3<br>GND<br>4<br>GND|



Note:       1. For Class I applications, all four mounting hole positions must be securely connected to the protective earth ground during the final system assembly to ensure optimal safety and EMI performance. 

2. For Class II applications, the four mounting hole positions must remain isolated from one another. Each mounting hole should be fixed to the chassis using insulated spacers. 

3. To enhance EMI performance under Class II test conditions, the VOF-85G Series allows an additional clamp core to be applied with one turn on the AC input. 

**cui** .com 

**CUI Inc │ SERIES:** VOF-85G **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/10/2025 **│ page** 4 of 5 

## **DERATING CURVE** 

**cui** .com 

**CUI Inc │ SERIES:** VOF-85G **│ DESCRIPTION:** AC-DC POWER SUPPLY 

**date** 07/10/2025 **│ page** 5 of 5 

## **REVISION HISTORY** 

|**rev.**|**description**|**date**|
|---|---|---|
|1.0|initial release|07/10/2025|



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. 



## Links

- [View this product on Novapart](https://novapart.co/products/VOF-85G-24/ac-dc-open-frame-power-supply-psu-ite-1-output-85)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/cui/vof-85g-24/ac-dc-single-output-open-frame/dp/4829582)
---

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