Key Takeaways
- The FSP400-50AAC power supply is an ATX 400W power supply built as a reliable switching power supply for modern PC, industrial PC, and embedded integrations.
- With 80 Plus Bronze efficiency and an eco-friendly power supply design, it targets reduced heat and practical energy savings in daily operation.
- It supports a wide input range 90-264Vac and 47-63Hz input frequency, helping global deployments standardize one PSU across regions.
- Stable rails and clean power delivery: multi output 3.3V 5V 12V -12V 5Vsb with low ripple and noise output limits for storage, I/O cards, and sensitive peripherals.
- Protection stack includes over current protection, over temperature protection, and over voltage protection for safer system operation.
- Designed for long service life with 100000 hours MTBF reliability and a compact 140 x 150 x 86 mm size that fits standard PS/2 ATX enclosures.
- Suitable for regulated deployments as a CB 62368-1 certified power supply and aligned to Intel ATX 12V v1.4 design expectations.
If you’re building a dependable desktop, industrial PC, or small workstation, the PSU is more than a “box that powers things”—it’s the foundation for stability, uptime, and hardware protection. The FSP400-50AAC power supply is designed for exactly that role: an ATX 400W power supply with Bronze-class efficiency, defined electrical protections, and a standards-based safety profile—ideal when your system needs to run cool, quiet, and predictable.
Landing Page Highlights: How TPS Positions the FSP400-50AAC
On the TPS product page, the FSP400-50AAC is introduced as a durable, high-performance 400W industrial-level PSU for demanding environments such as servers, automation systems, workstations, communication equipment, and modern computer systems. It emphasizes universal input (marketed as 100–264 VAC), an 80 PLUS Bronze rating reaching up to ~85% efficiency, low ripple and noise, and electrical protection features—plus an MTBF target of 100,000 hours for long-term use.
The page also notes cooling via a built-in 120 mm fan and references global approvals (UL, FCC, TÜV, CE, CCC, RoHS), making it attractive for regulated or compliance-sensitive builds.
Input & Efficiency: Universal AC Support with Bronze-Class Performance
The FSP400-50AAC is a switching power supply designed to operate across a wide input range 90-264Vac and 47-63Hz input frequency. For system builders, that translates into fewer regional variants and simpler procurement when your systems ship internationally or operate across mixed facilities.
Efficiency is specified as 80 Plus Bronze efficiency, supporting an eco-friendly power supply design approach by reducing wasted energy that otherwise becomes heat inside the chassis—helpful for stability, fan noise, and component lifespan.
Output Rails: Multi-Output Power for Real PC Loads
Typical PC and IPC builds need multiple rails for logic, drives, fans, and standby-powered functions. This model provides multi output 3.3V 5V 12V -12V 5Vsb, giving designers the standard set of ATX rails for compatibility with common motherboards, storage devices, and add-on cards.
To support signal integrity and reduce instability under load changes, the PSU specifies low ripple and noise output limits (for example, 50 mV p-p on +3.3V/+5V/+5Vsb and 120 mV p-p on +12V and -12V). This matters when you’re powering SSDs, communication modules, motion-control interfaces, or other peripherals that can be sensitive to rail noise.
Protection Features: Designed to Reduce Hardware Risk
In practical deployments, the most expensive downtime often starts with a simple electrical event: a stalled fan, a shorted peripheral, or an unexpected overload. The FSP400-50AAC includes over current protection, over temperature protection, and over voltage protection to help keep faults from escalating into component damage.
Mechanical Fit: Compact ATX Form Factor for Standard Chassis
Many system integrators still rely on classic PS/2 ATX mechanical envelopes for compatibility and serviceability. This PSU keeps integration simple with a compact 140 x 150 x 86 mm size, making it a drop-in-friendly option for a wide range of cases and industrial PC enclosures.
Compliance & Standards: Safety and Platform Alignment
For compliance-driven projects, safety approvals can be a gating factor. The FSP400-50AAC is positioned as a CB 62368-1 certified power supply and is designed to meet Intel ATX 12V v1.4, supporting widely used ATX expectations for integration and validation.
Reliability: Built for Long Runtime Expectations
If your PC is expected to run all day—or serve as a light workstation, edge system, or controller—the reliability target matters. This PSU specifies 100000 hours MTBF reliability, supporting long-life builds where maintenance windows are limited and predictable uptime is a priority.
Where the FSP400-50AAC Fits Best
- Everyday desktop PCs needing a stable ATX 400W power supply with defined protection coverage
- Industrial PCs and embedded systems that benefit from low ripple and noise output and global AC input support
- Workstations and small servers where 80 Plus Bronze efficiency and 100000 hours MTBF reliability are important selection criteria
FAQ
Is the FSP400-50AAC suitable for international installations?
Yes. It supports a wide input range 90-264Vac with 47-63Hz input frequency, which helps standardize builds across regions.
What output rails does it provide?
It delivers multi output 3.3V 5V 12V -12V 5Vsb, covering the standard ATX rails used by common motherboards, storage, and standby circuits.
How does it protect my system?
Key safeguards include over current protection, over temperature protection, and over voltage protection—helpful in real-world scenarios like overload, blocked airflow, or peripheral faults.
Why does low ripple matter?
Lower rail noise can improve stability for SSDs, communication cards, and sensitive peripherals. The PSU specifies low ripple and noise output limits to support consistent operation under load changes.
Request Pricing, Availability, or Integration Support
If you’re selecting an FSP400-50AAC power supply for a compliance-aware PC build or an industrial deployment, TPS Elektronik can support documentation, sourcing, and integration guidance—helping you validate protection behavior, chassis fit, and rail budgeting for your target system.
