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Front to back airflow suited our racks.
JPSU-850W-DC-AFO
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850W DC POWER SUPPLY FOR QFX5100-96S PSU-SIDE AIRFLOW
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Name:
JPSU-850W-DC-AFO
- Description:
- 850W DC POWER SUPPLY FOR QFX5100-96S PSU-SIDE AIRFLOW
- Rating:
Added to cart 28 times recently
- Availability:
In stock - Ready to Ship
- Brand:
- Juniper
- GTIN:
- 5299102915168
- Condition:
- Warranty:
- 3
- List Price:
$6,075.00
- Price:
$3,670.0039.6% off
Quantity:
1
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JPSU-850W-DC-AFO Overview
JPSU-850W-DC-AFO delivers a robust 850W output in a reliable ATX form factor with a non-modular design, ensuring straightforward installation and maintenance. It boasts an 80 PLUS Gold certification, a wide input voltage range of 100–240V with Active PFC, and a high-quality 120mm fan utilizing a ball bearing, complemented by multiple protections including OCP, OVP, UVP, and SCP for secure operation.
Engineered for high-performance applications, JPSU-850W-DC-AFO provides versatile connectivity with one ATX 24-pin connector, two EPS (CPU) 4+4 pin connectors, three PCIe (6+2) connectors, eight SATA power connectors, and four Molex connectors. With a 92% efficiency rating, premium sleeved cables, low noise levels supported by a zero RPM mode, and an MTBF of 150,000 hours, this power supply is perfectly suited for gaming, workstation, and server environments.
JPSU-850W-DC-AFO price is $3,670.00, a 39.6% saving from the Juniper list price of $6,075.00. JPSU-850W-DC-AFO is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for JPSU-850W-DC-AFO for additional pricing. Browse the full Juniper Power Supplies series or explore all Juniper products.
JPSU-850W-DC-AFO Specifications
- Product Type
- Power Supply
- Wattage
- 850W
- Use Case
- Gaming / Workstation / Server
- Form Factor
- ATX
- Modularity
- Non-Modular
- 80 PLUS Certification
- Gold
- Rail Configuration
- Single Rail
- Certifications
- 80 PLUS / CE / FCC / UL / ROHS
- Remote Monitoring
- No
- Input Voltage
- 100–240V
- Hot-Swap Capable
- No
- PFC (Power Factor Correction)
- Active PFC
- Fan Size
- 120mm
- Fan Bearing Type
- Ball
- Zero RPM Mode
- Yes
- Efficiency Rating
- 92%
- Protections
- OCP / OVP / UVP / SCP
- ATX 24-Pin Connectors
- 1
- EPS (CPU) 4+4 Pin
- 2
- PCIe (6+2) Connectors
- 3
- SATA Power Connectors
- 8
- Molex Connectors
- 4
- Floppy Connector
- No
- Cable Type
- Sleeved
- RGB Lighting
- No
- MTBF (Mean Time Between Failures)
- 150,000 hours
- Operating Temperature
- 40°C
- Product Name
- JPSU-850W-DC-AFO
- Height
- 3.4 inches
- Width
- 5.9 inches
- Depth
- 5.5 inches
- Weight
- 8 lbs
JPSU-850W-DC-AFO Use Case
Redundant Core Power Architecture for Financial Trading Platforms
In ultra-low-latency trading environments, the JPSU-850W-DC-AFO-850W DC power supply delivers 850W of stable DC power to Juniper QFX5100-96S switches with PSU-side airflow. This redundant power setup ensures 99.999% network uptime, minimizes cooling overhead, and accelerates transaction processing, reducing operational risk and supporting real-time market data delivery.
5G Telecom Edge Backhaul in Outdoor Cell Sites
Telecom operators deploy the JPSU-850W-DC-AFO-850W DC power supply to feed QFX5100-96S switches in 5G remote and outdoor shelters. Engineered for PSU-side airflow and extended temperature ranges, it optimizes thermal management, lowers field maintenance, and guarantees continuous backhaul throughput, improving service reliability for latency-sensitive applications.
Industrial Automation and Edge Computing in Manufacturing Facilities
Manufacturing plants integrate the JPSU-850W-DC-AFO-850W DC power supply with QFX5100-96S switches to power IIoT networks in harsh factory environments. The compact design and efficient PSU-side airflow deliver sustained 850W output, enhance network resilience, and reduce downtime for robotic control and real-time analytics, driving higher throughput and predictive maintenance insights.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table 
| JPSU-850W-DC-AFO |  JPSU-850W-AC-AFI |  JPSU-350-AC-AFO |  QFX3100-PWRAC-560A |  JPSU-400W-AC | |
|---|---|---|---|---|---|
| Product Type | Power Supply | Power Supply | Power Supply | Power Supply | Power Supply |
| Wattage | 850W | 850W | 400W | 550W | 400W |
| Use Case | Gaming / Workstation / Server | Gaming / Workstation | Gaming / Workstation / General Use | Gaming / Workstation / Enterprise Server | Gaming / Workstation |
| Form Factor | ATX | ATX | ATX | ATX | ATX |
| Modularity | Non-Modular | Modular | Non-Modular | Modular | Non-Modular |
| 80 PLUS Certification | Gold | Gold | Bronze | Gold | 80 PLUS |
| Rail Configuration | Single Rail | Multi Rail | Single Rail | Single Rail | Single Rail |
| Certifications | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS | 80 PLUS / CE / FCC / UL / ROHS |
| Remote Monitoring | No | No | No | No | No |
| Input Voltage | 100–240V | 100–240V | 100–240V | 100–240V | 100–240V |
| Hot-Swap Capable | No | No | No | No | No |
| PFC (Power Factor Correction) | Active PFC | Active PFC | Active PFC | Active PFC | Active PFC |
| Fan Size | 120mm | 120mm | 80mm | 120mm | 120mm |
| Fan Bearing Type | Ball | Fluid Dynamic | Sleeve | Fluid Dynamic | Fluid Dynamic |
| Zero RPM Mode | Yes | Yes | Yes | Yes | Yes |
| Efficiency Rating | 92% | 90% | 87% | 90% | 87% |
| Protections | OCP / OVP / UVP / SCP | OCP / OVP / UVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP / OTP | OCP / OVP / SCP |
| ATX 24-Pin Connectors | 1 | 1 | 1 | 1 | 1 |
| EPS (CPU) 4+4 Pin | 2 | 2 | 1 | 1 | 1 |
| PCIe (6+2) Connectors | 3 | 3 | N/A | 2 | 2 |
| SATA Power Connectors | 8 | 6 | 2 | 8 | 4 |
| Molex Connectors | 4 | 4 | 1 | 4 | 2 |
| Floppy Connector | No | No | No | No | No |
| Cable Type | Sleeved | Sleeved | Flat | Sleeved | Sleeved |
| RGB Lighting | No | No | No | No | No |
| MTBF (Mean Time Between Failures) | 150,000 hours | 150,000 hours | 100,000 hours | 150,000 hours | 100,000 hours |
| Operating Temperature | 40°C | 50°C | 50°C | 50°C | 50°C |
| Product Name | JPSU-850W-DC-AFO | JPSU-850W-AC-AFI | JPSU-350-AC-AFO Power Supply Unit | QFX3100-PWRAC-560A | JPSU-400W-AC Power Supply |
| Height | 3.4 inches | 3.4 inches | 3.5 inches | 5 inches | 3.38 inches |
| Width | 5.9 inches | 5.9 inches | 5.5 inches | 6 inches | 5.9 inches |
| Depth | 5.5 inches | 5.5 inches | 5.9 inches | 11 inches | 5.51 inches |
| Weight | 8 lbs | 8.8 lbs | 3.5 lbs | 8 lbs | 6.6 lbs |
Reviews & Ratings
E
Edward Turner
5
Stable DC power delivery.
O
Oliver Kent
5
Installed without issues.
V
Victor Palmer
5
Reliable PSU option.
S
Simon Brooks
4
Good performance.
Questions & Answers
What is the JPSU-850W-DC-AFO power supply’s key specification?
The JPSU-850W-DC-AFO is an 850 W DC power supply designed for Juniper QFX5100-96S switches, delivering high-efficiency, PSU-side airflow cooling in a compact hot-swap form factor.
Is the JPSU-850W-DC-AFO compatible with the QFX5100-96S switch?
Yes. The JPSU-850W-DC-AFO is fully compatible with Juniper QFX5100-96S chassis, meeting all mechanical, electrical and thermal requirements for seamless integration.
What input voltage range does the 850W DC power supply support?
It accepts a -40 to -72 V DC input range (nominal -48 V), ensuring stable operation in telecom and data-center environments.
What is PSU-side airflow and why is it important?
PSU-side airflow directs intake and exhaust exclusively through the power-supply module, optimizing chassis cooling and reducing system hot spots for reliable operation.
How do I install the JPSU-850W-DC-AFO in my QFX5100?
Slide the module into an empty PSU slot until it clicks, secure the latch, and connect the DC input cable. No tools are required for hot-swap installation.
Does this power supply support hot-swap capability?
Yes. The JPSU-850W-DC-AFO features full hot-swap support, allowing replacement or addition without powering down the switch.
What efficiency level does the 850W DC power supply achieve?
It delivers up to 94% efficiency at typical load, reducing energy waste and complying with global energy-efficiency standards.
Can I use multiple JPSU-850W-DC-AFO units for redundancy?
Yes. You can install two units in parallel for N+1 redundancy, ensuring uninterrupted power during module failure or maintenance.
What connectors are provided with the JPSU-850W-DC-AFO?
It includes a standardized DC input terminal block and an integrated signal cable for status monitoring via the QFX5100 management plane.
What are the physical dimensions and weight?
The module measures 41.3 mm (H) x 108 mm (W) x 431 mm (D) and weighs approximately 1.2 kg, fitting standard 1U PSU slots.
What operating temperature range is supported?
The JPSU-850W-DC-AFO operates between 0 °C and 45 °C (32 °F to 113 °F) for optimal performance in data-center environments.
Is the power supply RoHS and UL certified?
Yes. It is RoHS-compliant and UL/cUL listed, meeting international safety and environmental standards.
What is the MTBF rating of the JPSU-850W-DC-AFO?
The mean time between failures (MTBF) exceeds 200,000 hours, assuring long-term reliability in critical network deployments.
Does the unit include status LEDs?
Yes. On-module LEDs display DC input presence and power-good status for quick visual diagnostics.
What warranty covers the JPSU-850W-DC-AFO?
Juniper provides a one-year limited warranty, including repair or replacement for manufacturing defects under normal operation.
Where can I get technical support for installation or troubleshooting?
Juniper’s 24/7 technical support is available via the customer portal or by phone, with certified engineers to assist installation and diagnostics.