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Enclosed metal power supply, 1.5 inches high, built-in fan, AC input terminals, DC output terminals

Analog Technologies

Analog Technologies ALRS12V8R4AT 100W 12V 8.4A Switching Power Supply

SKU CH-VD0J-BVFZ9

Converts 90–264 VAC to 12 VDC at 8.4 A with over 85 % efficiency in a 38 mm metal enclosure

  • Product typeSwitching Power Supply
  • Delivers stable 12 VDC at 8.4 A for demanding loads
  • Wide 90–264 VAC input suits global mains without extra wiring
  • Surge withstand of 300 VAC for 5 seconds protects against spikes
  • Efficiency above 85 % cuts heat and running costs
  • Low-profile 1.5 inch metal case with fan fits tight enclosures

Purpose and fit

The Analog Technologies ALRS12V8R4AT is a 100W enclosed switching power supply that converts 90-264VAC input to a regulated 12VDC output at 8.4A. Its low-profile metal chassis measures 1.5 inches (38mm) in height and includes a built-in long-life fan for active cooling. The unit is designed for industrial equipment, 3D printers, computer systems and LED lighting installations that require a compact, shielded DC source. It is not suited for applications needing multiple output voltages, higher wattage than 100W, or fanless silent operation.

Thermals, noise and power

Efficiency exceeds 85% at typical loads, reducing waste heat during continuous operation. The integrated fan maintains safe internal temperatures across an operating range of 10°C to 60°C, while the all-metal enclosure provides EMI shielding and structural rigidity. The supply withstands a 300VAC surge input for 5 seconds, adding resilience against mains transients. Acoustic output will be audible due to the forced-air design, so it is not intended for noise-sensitive environments.

Upgrade context

This unit replaces older linear or lower-efficiency switching supplies where space is limited and reliability under vibration is critical — the chassis meets a 5G anti-vibration rating. The jump is worthwhile when moving from an open-frame design to a fully enclosed, shielded package, or when the wider 90-264VAC input range simplifies deployment across 110V and 220V mains regions. It does not address needs for programmable output, remote sensing, or redundant hot-swap configurations.

How it compares

Measured against everything we stock in ATX Desktop Power Supplies, at today’s prices. Recalculated every night.

Price $10.99
Cheaper than about 98% of the 10,869 comparable items (median $142.99).

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Specifications

Product
Product typeSwitching Power Supply

Questions about this item

How do I mount the 1.5-inch (38mm) low-profile unit and what wiring mistake should I avoid?

Use the four corner holes on the all-metal enclosure to secure it; connect the AC input to a 90V–264VAC source and the DC output to a 12V load, never reverse the polarity or exceed 8.4A.

What maintenance will the built-in long-life fan need over time?

Periodically clear dust from the fan intake and exhaust vents to maintain airflow; the fan is rated for continuous operation from 10°C to 60°C and has no user-serviceable parts.

At what point does the >85% efficiency drop or protection activate during sustained full-load use?

Efficiency stays above 85% up to the 100W rating; if the load exceeds 8.4A or the internal temperature surpasses 60°C, over-current or over-temperature protection will shut the output down.

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