The Juniper JPSU-650W-AC-AFO is a 650W AC power supply designed for seamless integration with networking hardware requiring a reliable power source. Engineered with precision, this unit ensures consistent power delivery with its capacity to handle input voltages ranging from 100-240 V AC for single-phase connections, and also supports DC power feeds from -42 to -72V, catering to a broad spectrum of electrical environments. This power supply is notable for its air flow design, which operates from the front to the back, aligning with the AFI (Air Flow In) configuration. This design promotes efficient cooling by drawing air through the ports, which face the hot aisle, and expelling it out the back where the power supplies and fan trays are located, thereby facing the cold aisle. This strategic airflow direction aids in maintaining optimal operating temperatures and enhances the longevity of the power supply and the equipment it services. The physical dimensions of the Juniper JPSU-650W-AC-AFO stand at 17.0 inches in width, 1.74 inches in height, and 19.4 inches in depth (43.2 x 4.4 x 49.3 cm), with a weight of 30.8 lb (14 kg) when fully populated. This compact and efficient design allows for versatile mounting options including front-mount, rear-mount, or mid-mount on a two-post rack, as well as four-post mounting, facilitating ease of integration into various rack configurations.

• Power consumption peaks at 345 watts while holding a nominal consumption of 255 watts.
• Heat dissipation capabilities are maximized at 1,177 BTU with a nominal dissipation of 870 BTU.
• The operational Mean Time Between Failures (MTBF) is rated at 87,000 hours, indicating reliability over prolonged use.

In terms of environmental adaptability, the JPSU-650W-AC-AFO operates efficiently within a temperature range of 32° F to 104° F, and can be stored in conditions ranging from -40° F up to 158° F. It is capable of operating at altitudes up to 10,000 ft (3,049 m) and non-operating altitudes up to 40,000 ft (12,192 m), ensuring performance in a variety of geographical locations. Humidity levels are also taken into account, with operational relative humidity ranging from 5% to 90% (non-condensing) and non-operating humidity from 0% to 95% (non-condensing), providing adaptability to different environmental conditions. This power supply unit is crafted to support the demanding needs of networking hardware, offering not only a reliable power source but also contributing to the overall efficiency and operational stability of the systems it powers. With its robust features and flexible mounting options, the Juniper JPSU-650W-AC-AFO stands as a critical component for any network infrastructure, ensuring that equipment operates smoothly and reliably under varying electrical inputs and environmental conditions.

Part Number	Juniper JPSU-650W-AC-AFO
Manufacturer	Juniper
Power Supply Capacity	650W, AC Configuration
Airflow Direction	Port side to FRU side (front to back)
Dimensions	43.2 cm x 4.4 cm x 49.3 cm (Width x Height x Depth)
Weight	14 kg when fully equipped
AC Input	100-240V AC, single-phase, 50/60 Hz
DC Input	-42V to -72V DC
Max Power Usage	345W
Typical Power Usage	255W
Max Heat Output	1,177 BTU/hr
Typical Heat Output	870 BTU/hr
Airflow Configuration	Port side towards hot aisle, power and cooling from cold aisle
Rack Mounting Options	Can be mounted at the front, rear, or mid-section on two-post racks; compatible with four-post racks
MTBF	87,000 hours
Min Operating Temperature	0°C (32°F)
Max Operating Temperature	40°C (104°F)
Min Storage Temperature	-40°C (-40°F)
Max Storage Temperature	70°C (158°F)
Operating Altitude	Up to 3,048 meters (10,000 feet)
Non-operating Altitude	Up to 4,876 meters (16,000 feet)
Min Operational Humidity	5%, non-condensing
Max Operational Humidity	90%, non-condensing
Non-operating Humidity	0% to 95%, non-condensing