Over 15 years experience of providing support of MEAN WELL Power Supplies
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Mean Well SPAN02B-03 DC-DC Converter - 2W - 18~36V in 3.3V out 500mA
Log in to see priceSPAN02 and DPAN02 series are 2W isolated and regulated module type DC-DC converter with SIP8 package. It features international standard pins, a high efficiency up to 85%, wide working temperature range -40~+90℃, 1.5KVDC I/P-O/P isolation voltage, compliance to EN55032 radiated class A without additional components, overload and continuous-mode short circuit protection, etc. The models account for different input voltage 4.5~9V, 9~18V, 18~36V and 36~75V 2:1 wide input range, and various output voltage, 3.3V/5V/12V/15V for single output and ±5V/±12V/±15V for dual outputs, which are suitable for all kinds of systems, such as industrial control, telecommunication field, distributed power architecture, and so on.
Key Features
- ✓SIP8 package with industry standard pinout 2:1 wide input range
- ✓Operating temperature range -40 ~ +90℃
- ✓No minimum load required
- ✓Comply to EN55032 radiated Class A without additional
- ✓Hcoigmhpeofnfiecinetnscy up to 85%
- ✓Protections: Short circuit (Continuous) / Overload
- ✓1.5KVDC I/O isolation
- ✓Remote ON/OFF control
- ✓3 years warranty
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BrandMean Well
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SeriesSPAN Series
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Power Rating2 Watt
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Output Voltage3.3 Volt
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Rated Current0.5 Ampere
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Input Voltage18V~36V
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Standards MetCE,EAC
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Operation ModeConstant Voltage
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Operating Temperature-40°C~90°C
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Warranty3 Year
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Length2.18 cm
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Width1.11 cm
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Height0.92 cm
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Weight0 kg
::specification::
Frequently Asked Questions
Can I use the SPAN02B-03 to derive 3.3V for embedded logic from a 24V-class control supply?
Yes, it is suited to low-power embedded logic and control electronics that need constant 3.3V output from an 18-36VAC input range. Its 2W rating fits board-level electronics rather than higher-power subsystem loads.
Is the SPAN02B-03 suitable for PLC-adjacent sensing or interface boards that run at 3.3V?
It can be a fit for low-power interface or sensing circuits that need a regulated 3.3V rail and are supplied from 18-36VAC. The converter is constant voltage and compact at 21.8 × 11.1 × 9.2 mm, which suits dense control hardware.
Can this converter be used in industrial IoT or communications electronics that require 3.3V?
Yes, for low-power industrial IoT, monitoring, or communications circuits that operate at 3.3V and stay within the 2W rating. Its 18-36VAC input range matches systems built around higher-voltage control power.
Is the SPAN02B-03 a practical choice for compact automation electronics?
It is well suited to compact automation electronics because it combines a 2W output with a 21.8 × 11.1 × 9.2 mm package and 0.0048 kg weight. Those specs support board-level use where available space is limited.
How does the SPAN02B-03 compare with the other SPAN02B models?
The listed SPAN02B siblings are all 2W converters with 18-36VAC input, but they differ in output. SPAN02B-03 is 3.3V and 500A, SPAN02B-05 is 5V and 400A, SPAN02B-12 is 12V and 167A, and SPAN02B-15 is 15V and 134A.
Can the SPAN02B-03 handle demanding temperature conditions?
It is specified for operation from -40°C to +90°C, which supports a broad industrial temperature envelope. No IP rating is shown in the product data, so the specs do not confirm outdoor or wet-location use.
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