Isometric infographic of the PSK-20D-5-T 5V 20W AC-DC power module showing wide-input industrial converter design.
The PSK-20D-5-T is a compact 20-watt AC-DC converter designed to provide a stable 5 V output at up to 4 A in a chassis/board-mount package. It is used widely in industrial, ITE and appliance applications where a small, reliable low-voltage power rail is needed. The unit accepts a very wide input range, making it suitable for international and harsh-power environments.
Key features at a glance
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Output: 5 V DC, 4 A, 20 W.
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Input range: wide universal input — typically 85–305 VAC and 100–430 VDC, which supports both global AC mains and high DC rails.
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Mounting: chassis/board mount (T = chassis mount variant). Datasheet shows footprint, wiring, and mounting guidance.
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Isolation & safety: designed with industry-standard isolation (4 kVAC typical in PSK-20D family) and low no-load consumption.
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Lifecycle note: many distributor pages list PSK-20D-5-T as NRND/obsolete or restricted availability; design teams should check stock and recommended replacements.
Why engineers choose the PSK-20D-5-T
Engineers pick this module when they need a compact, fully enclosed solution that reduces design time. The PSK-20D family includes protective features and application guidance (recommendation for input TVS and output capacitors), which simplifies system-level design and increases reliability in noisy mains environments. Component libraries and CAD footprints are available from multiple vendors, speeding PCB layout and prototypes.
Typical applications
This power module is suitable for:
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Industrial controllers and automation equipment.
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Home and commercial appliances requiring a regulated 5 V rail.
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ITE devices and embedded systems where space is limited and a ready-made safety-rated supply is preferred.
Quick design tips
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Follow the datasheet recommendations for input and output capacitors and TVS diodes to maintain transient immunity and stability.
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Verify creepage/clearance if you repackage the module or change mounting orientation.
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Plan for lifecycle risks: qualify a replacement part early in the design cycle if you expect long production runs.
Where to learn more
Consult the official PSK-20D datasheet for pinout, mechanical drawings, recommended external components, and safety notes. Distributor product pages provide up-to-date stock information and ordering codes. For PCB footprint and symbol downloads use libraries such as SnapEDA.