MEAN WELL SCWN03W8 & DCWN03W8 Series

Product Overview

The SCWN03W8 and DCWN03W8 series are 3W isolated and regulated module type DC-DC converters featuring a DIP24 package with international standard pins. They offer a high efficiency up to 84%, a wide working temperature range of -40~+95℃, 3KVdc I/P-O/P isolation voltage, and compliance with BS EN/EN55032 radiated Class B standards without additional components. These converters include continuous-mode short circuit protection and an 8:1 (9~75V) ultra-wide input range. They are available with various output voltages, including 3.3V, 5V, 12V, 15V for single output and ±5V, ±12V, ±15V for dual outputs, making them suitable for industrial control, telecommunication fields, and distributed power architectures.

Features

• DIP24 package with industry-standard pinout
• 8:1 (9~75Vdc) ultra-wide input range
• Operating temperature range: -40 ~ +95°C
• No minimum load required
• Complies with BS EN/EN55032 radiated Class B without additional components
• High efficiency up to 84%
• Protections: Short circuit (Continuous) / Overload / Over voltage / UVLO
• Remote ON/OFF control (Optional)
• 3KVdc I/O isolation
• 3 years warranty

Applications

• Telecom/datacom systems
• Wireless networks
• Industrial control facilities
• Instruments
• Analyzers
• Detectors
• Data switches

Model Encoding

The model encoding follows a structure where:

• The first part indicates the series name (SCWN03 for single output, DCWN03 for dual output).
• 'W8' denotes the 8:1 ultra-wide input range.
• The number following the hyphen indicates the output voltage (e.g., '12' for 12V or ±12V).
• The series name can be followed by a suffix indicating output type (e.g., 'S' for Single output, 'D' for Dual output, though this is implied by SCWN vs DCWN).

Model Selection Table

* For each output

Technical Specifications

INPUT

OUTPUT

PROTECTION

ENVIRONMENT

SAFETY & EMC (Note.5)

OTHERS

Notes:

1. All parameters are specified at normal input (48Vdc), rated load, 25°C 70% RH ambient.
2. Ripple & noise are measured at 20MHz by using a 12" twisted pair terminated with a 0.1uf & 47uf capacitor.
3. Line regulation is measured from low line to high line at rated load.
4. Load regulation is measured from 0% to 100% rated load.
5. The final equipment must be re-confirm that it still meet EMC directives. For guidance on how to perform these EMC tests, please refer to "EMI testing of component power supplies." (as available on http://www.meanwell.com)

Product Liability Disclaimer: For detailed information, please refer to https://www.meanwell.com/serviceDisclaimer.aspx

Performance Characteristics

Derating Curve

The derating curve illustrates the relationship between the load percentage and the ambient temperature (Ta) for the DC-DC converters. It shows that for single output voltages (3.3Vo/5Vo/±5Vo), the maximum load capacity is maintained up to a certain temperature, after which derating is required. For other outputs, derating begins at lower temperatures. The curve indicates operation under natural convection and highlights the need for derating at higher ambient temperatures to prevent overheating and ensure reliability.

EMC Suggestion Circuit

To meet BS EN/EN55032 radiated Class B standards, the following external components are recommended:

• For SCWN03W8 and DCWN03W8: A capacitor C1 (2.2μF/100V) and an inductor L1 (12μH) are required.

Mechanical Specifications & Pin Assignment

Mechanical Dimensions

The converters have the following dimensions: Length: 31.8mm (1.25 inches), Width: 20.3mm (0.8 inches), Height: 10.2mm (0.4 inches). Tolerances are specified as ±0.5mm for x.x and ±0.25mm for x.xx. The pin size is 0.5±0.05mm (0.02"±0.002").

Pin Assignment

* N.P. : No Pin for standard model; the pin is available when Remote Control (R.C.) is selected.

The pinout is visualized from the bottom view, side view, and top view, showing the grid spacing of 2.54mm.

Packing Information

The converters are packed in standard tubes. Each tube contains 10 pieces. The maximum quantity per carton is 600 pieces (60 tubes). The gross weight for one tube is 148g, and the gross weight for one carton is 10.88Kg. Carton dimensions are approximately L390.9 x W284.8 x H175.7 mm.

Installation Manual

For detailed installation instructions, please refer to: http://www.meanwell.com/manual.html

Additional Information

GTIN CODE search is available at: https://www.meanwell.com/serviceGTIN.aspx