TDK FAW05-5R0 | 5V 5A AC-DC Power Supply

Description

Key Technical Specifications

Parameter	Specification
Manufacturer	TDK-Lambda
Model	FAW05-5R0
Product series	FAW
Product type	AC-DC power supply
Output configuration	Single output
Rated output voltage	5 VDC
Maximum output current	5 A
Maximum output power	25 W
Input voltage range	85–264 VAC
Nominal input ratings	100–120 VAC / 200–240 VAC
Input frequency	47–66 Hz, single phase
Maximum input current	0.7 A at 100–120 VAC; 0.45 A at 200–240 VAC
Internal fuse rating	2.5 A
Typical efficiency	70%
Output voltage adjustment range	4.5–5.5 VDC
Maximum ripple	80 mV peak-to-peak
Maximum ripple and noise	120 mV peak-to-peak
Maximum startup time	500 ms
Minimum hold-up time	15 ms
Overvoltage protection threshold	6.0–6.9 VDC
Overcurrent protection threshold	5.5–7.5 A
Operating indicator	Green LED
Dimensions (H × W × L)	25 × 95 × 125 mm
Dimensions with optional cover	30 × 95 × 125 mm
Maximum documented weight	300 g
Mounting	Mountable from two sides
Product status	Obsolete
TDK-recommended alternate	HWS30A-5; interchangeability not guaranteed

The rated output current is specified for ambient temperatures from 0°C to +50°C. Derating is required outside that range. The optional cover also requires derating.

 

Engineering Selection Highlights

Wide AC input range

The FAW05-5R0 accepts 85–264 VAC without requiring a manual input-voltage selection. This range covers common 100/120 V and 200/240 V AC supply systems, subject to the equipment’s electrical design and installation requirements.

Regulated 5 VDC output

The unit provides up to 5 A at a nominal 5 VDC output. When evaluating it for a control cabinet or electronic assembly, confirm that the load’s steady-state current, startup demand, and transient requirements remain within the supply’s ratings.

Compact open-frame construction

The FAW series uses a thin, open-frame design, with an optional protective cover. The published dimensions help engineers check mounting space and clearance, but do not establish compatibility with a proprietary equipment slot or connector.

Built-in protection

The documented design includes overvoltage and overcurrent protection. The overvoltage circuit shuts down the output and requires input power to be cycled for recovery, with an interval of approximately 30 seconds specified in the catalog. The overcurrent protection uses a constant-current/voltage-droop characteristic and can recover automatically after the overload condition is removed.

Output status indication

A green LED indicates that output voltage is present. This is useful for basic inspection, but the illuminated indicator alone does not confirm that the supply maintains the correct voltage under load.

System Compatibility & Integration Requirements

Check	What to verify
Output voltage	The connected equipment requires a nominal 5 VDC supply.
Load current	The load does not exceed 5 A under the specified operating conditions.
Power demand	The load remains within the 25 W output rating, including relevant startup and transient requirements.
AC input	The installation’s supply voltage and frequency fall within the rated range.
Wiring and terminals	Verify AC line, neutral, protective ground, DC positive, and DC negative against the unit’s terminal markings.
Grounding	Confirm that the frame-ground terminal is connected as required by the installation design.
Mechanical fit	Check the 25 × 95 × 125 mm body dimensions, mounting points, clearances, and optional-cover arrangement.
Thermal conditions	Confirm adequate ventilation and apply derating where required.
Replacement approval	Validate the proposed replacement’s electrical and mechanical interfaces before installation.

The FAW05-5R0 is a power supply, not a programmable controller or I/O module. Its suitability for a particular industrial control system depends on the original system’s power requirements and mounting arrangement.

Some aftermarket listings associate this power-supply model with the Yokogawa PW502-S1 designation. Treat that association as equipment-specific sourcing information and verify the installed unit’s nameplate and system documentation before using it as a cross-reference.

 

Dimensions, Mounting & Connection Notes

The manufacturer’s catalog specifies the following mechanical dimensions:

• Without optional cover: 25 mm high × 95 mm wide × 125 mm long.
• With optional cover: 30 mm high × 95 mm wide × 125 mm long.
• Maximum documented weight: 300 g.
• Mounting: Attachment is possible from two sides.

The original terminal diagram identifies the following functions:

Terminal function	Connection
AC input	L and N
Frame ground	G / protective earth
DC output	Positive (+) and negative (−)
Output adjustment	Voltage-adjustment trimmer
Status indication	Green output LED

Before installation, isolate the incoming AC supply and follow the equipment’s electrical safety procedure. Verify the terminal markings on the physical unit rather than relying solely on a wiring description.

TDK’s catalog also specifies that screws used with the M3 mounting threads must not penetrate more than 5 mm into the frame. Observe this limit when selecting mounting hardware.

 

Detailed Product Overview

AC-to-DC conversion and output regulation

The FAW05-5R0 belongs to TDK-Lambda’s FAW series of single-output AC-input power supplies. It converts an incoming AC supply into a nominal 5 VDC output for connected electronic equipment.

Its maximum rated output is 25 W, calculated from the nominal output voltage and current:

The output voltage adjustment range is 4.5–5.5 VDC. That adjustment capability should not be used to compensate for an incorrect supply selection or an excessive voltage drop caused by unsuitable wiring.

Input and output performance

The published input range is 85–264 VAC, with a frequency range of 47–66 Hz for single-phase input. The catalog specifies maximum input current of 0.7 A at 100–120 VAC and 0.45 A at 200–240 VAC under the stated operating conditions.

Maximum output ripple is specified at 80 mV peak-to-peak, while the maximum ripple-and-noise specification is 120 mV peak-to-peak. These are different catalog measurements and should not be treated as interchangeable. Applications with sensitive analog circuitry or tightly controlled noise budgets should assess the complete system’s power-quality requirements.

The specified typical efficiency is 70%. Actual efficiency varies with operating conditions, so thermal and input-power calculations should use the relevant engineering requirements rather than assuming a fixed efficiency under all loads.

Protection and operating indication

The FAW05-5R0 includes overvoltage and overcurrent protection. The catalog describes overvoltage protection as a shutdown-type function that recovers after the input is switched off and reapplied. It describes overcurrent protection as a constant-current/voltage-droop type, with automatic recovery after the cause is removed.

A green LED indicates output voltage. During troubleshooting, check the indicator alongside output voltage measurements and load behavior. A lit LED is not a substitute for verifying voltage stability under the actual load.

Replacement and obsolescence considerations

TDK lists the FAW05-5R0 as obsolete. Its product information identifies HWS30A-5 as a recommended alternate, but explicitly states that interchangeability is not guaranteed.

A replacement assessment should therefore cover:

• Output voltage, current, and power requirements.
• AC input range and frequency.
• Terminal positions and wiring.
• Mounting dimensions and clearances.
• Grounding and insulation requirements.
• Startup behavior, hold-up time, ripple, and protection characteristics.
• Approval under the original equipment’s maintenance and engineering procedures.

For legacy equipment, an equivalent nominal output is not enough to establish a drop-in replacement. The complete electrical and mechanical interface must be checked.

 

Applications & System Role

The FAW05-5R0 is intended to provide a regulated low-voltage DC rail from an AC input. Its 5 V, 5 A output makes it relevant to equipment whose documented power requirements match those ratings.

Potential application contexts include:

• Industrial control assemblies: Supplying 5 VDC to compatible electronic circuits.
• Automation equipment maintenance: Replacing a failed power supply where the original design specifies this model.
• Legacy equipment support: Maintaining existing installations that use the FAW series.
• Electronic instrumentation systems: Providing a single DC output to compatible loads.
• Spare-parts inventory: Identifying the exact model for repair planning and replacement procurement.

These are application categories, not confirmation that the unit fits every system in those categories. Always verify the original equipment’s electrical, mechanical, and thermal requirements.

 

Frequently Asked Questions

Q1. What is the TDK FAW05-5R0?

It is a TDK-Lambda FAW-series AC-DC power supply with a single 5 VDC output rated at up to 5 A and 25 W.

Q2. What is the input voltage range?

The catalog specifies 85–264 VAC, single phase, at 47–66 Hz. Nominal input ratings are 100–120 VAC and 200–240 VAC.

Q3. Can the output voltage be adjusted?

Yes. The specified adjustment range is 4.5–5.5 VDC. Adjust the output only in accordance with the manufacturer’s instructions and the connected equipment’s voltage requirements.

Q4. Does the FAW05-5R0 have built-in protection?

Yes. The catalog documents overvoltage shutdown and overcurrent protection. Recovery behavior differs between these functions, so follow the manufacturer’s operating instructions during fault diagnosis.

Q5. What are the dimensions of the power supply?

The body measures 25 × 95 × 125 mm (H × W × L). With the optional cover, the height increases to 30 mm.

Q6. Is the FAW05-5R0 still in production?

No. TDK lists the model as obsolete. Its published notice gives May 19, 2006 as the discontinuation date, December 29, 2006 as the last purchase-order date, and March 30, 2007 as the last shipment date.

Q7. What is the recommended replacement?

TDK identifies HWS30A-5 as a recommended alternate. The manufacturer explicitly states that interchangeability is not guaranteed, so verify the complete electrical and mechanical requirements before substitution.

Q8. What should be checked when sourcing a used FAW05-5R0?

Confirm the exact model marking, inspect the terminals and enclosure, and test output voltage and stability under load. Also check for overheating, corrosion, damaged components, and abnormal noise. For equipment-specific use, verify the replacement against the original system documentation.