KPS5-5 Equivalent & Substitute Parts Reference

Part Overview

The KPS5-5 is an open frame AC/DC converter manufactured by TDK-Lambda Americas Inc., rated for 5V output at 1A with 5W power capacity. This unit accepts universal input voltage (85–264 VAC) and is designed for ITE commercial applications. The KPS5-5 is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new designs requiring compatible functionality.

Key Parameters

Parameter	Value
Manufacturer Part Number	KPS5-5
Manufacturer	TDK-Lambda Americas Inc
Series	KPS (5W)
Product Status	Obsolete
Type	Open Frame
Voltage - Input	85–264 VAC
Voltage - Output	5V
Current - Output (Max)	1A
Power (Watts)	5W
Mounting Type	Through Hole
Package / Case	4-DIP Module
Operating Temperature	0°C–70°C (With Derating)
Efficiency	70%
Line Regulation	±0.5%
Load Regulation	±1%
Approval Agency	CE, CSA, EN, UL
Standard Number	60950-1
RoHS Status	RoHS Compliant

Substitute Part Grouping Explanation

Substitution of the KPS5-5 is determined by the following critical parameters:

Primary Substitution Criteria:

Output voltage: 5V
Input voltage range: 85–264 VAC or compatible universal input
Power rating: 5W or higher
Package type: 4-DIP Module
Mounting: Through Hole
Regulatory compliance: CE, CSA, UL certifications

Substitute Categories:

Category 1: Direct Voltage & Power Match (Same Series)

KPSA5-5: Active status, same 5V output, 5W power, improved efficiency (72%), same input range, same package and mounting

Category 2: Higher Power Rating (Uprated Capacity)

KPSB6-5: Active status, 5V output, 6W power (higher capacity), 1.2A output current, improved efficiency (78%), extended temperature range (-40°C–80°C), same package and mounting

Category 3: Cross-Manufacturer Equivalent

MFM-05-5: Active status, 5V output, 5W power, 1A output current, improved efficiency (80%), extended temperature range (-40°C–85°C), same package and mounting, different manufacturer (MEAN WELL USA Inc.)

Category 4: Voltage Variant (Not Recommended for Direct Substitution)

KPSA5-3R3: Different output voltage (3.3V), not suitable for 5V applications

Parameter Comparison

Parameter	KPS5-5	KPSA5-5	KPSB6-5	MFM-05-5
Manufacturer	TDK-Lambda	TDK-Lambda	TDK-Lambda	MEAN WELL USA
Product Status	Obsolete	Active	Active	Active
Voltage - Input	85–264 VAC	85–264 VAC	90–264 VAC	80–264 VAC
Voltage - Output	5V	5V	5V	5V
Current - Output (Max)	1A	Not Specified	1.2A	1A
Power (Watts)	5W	5W	6W	5W
Type	Open Frame	Open Frame	Open Frame	Open Frame
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	4-DIP Module	4-DIP Module	4-DIP Module	4-DIP Module
Operating Temperature	0°C–70°C	0°C–70°C	-40°C–80°C	-40°C–85°C
Efficiency	70%	72%	78%	80%
Line Regulation	±0.5%	±0.5%	±1%	±0.3%
Load Regulation	±1%	±1%	±5%	±0.5%
Approval Agency	CE, CSA, EN, UL	CE, CSA, EN, UL	CE, CSA, FCC, UL	CB, CE, cURus, EAC, TUV
Standard Number	60950-1	60950-1	60950-1	Not Specified
RoHS Status	RoHS Compliant	RoHS Compliant	RoHS Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Same Electrical Performance): KPSA5-5 is the primary substitute for KPS5-5. Both units deliver 5V at 5W with identical input voltage range (85–264 VAC), through-hole mounting, and 4-DIP module packaging. KPSA5-5 is active status and maintains the same regulatory certifications (CE, CSA, EN, UL) and ITE commercial application suitability. Efficiency improvement (72% vs. 70%) and identical line/load regulation specifications ensure functional compatibility.

For Higher Capacity Applications: KPSB6-5 provides uprated performance with 6W power capacity and 1.2A output current while maintaining 5V output and 4-DIP module form factor. This unit is suitable for applications requiring additional headroom or extended operating temperature range (-40°C–80°C). Extended temperature capability and improved efficiency (78%) support demanding environments. FCC certification addition provides broader regulatory coverage.

For Cross-Manufacturer Requirement: MFM-05-5 (MEAN WELL USA Inc.) offers equivalent 5V/5W/1A specifications with superior efficiency (80%), extended temperature range (-40°C–85°C), and enhanced line regulation (±0.3%). This unit is suitable when supply chain diversification or MEAN WELL-specific approvals are required. Regulatory certifications include CB, CE, cURus, EAC, and TUV, supporting broader international applications.

Not Recommended: KPSA5-3R3 is not suitable as a substitute due to different output voltage (3.3V vs. 5V), which is incompatible with 5V-dependent circuits.

Frequently Asked Questions (FAQ)

Q1: Can KPSA5-5 directly replace KPS5-5 in existing designs? Yes. KPSA5-5 maintains identical electrical specifications (5V, 5W, 1A, 85–264 VAC input), through-hole mounting, and 4-DIP module packaging. Both units comply with IEC 60950-1 and carry CE, CSA, EN, and UL certifications. The primary difference is active product status and marginally improved efficiency (72% vs. 70%).

Q2: What is the advantage of KPSB6-5 over KPSA5-5? KPSB6-5 provides higher power capacity (6W vs. 5W) and increased output current (1.2A vs. unspecified), supporting applications with higher current demands. Extended operating temperature range (-40°C–80°C vs. 0°C–70°C) enables deployment in industrial and harsh environments. Improved efficiency (78%) reduces thermal dissipation. Physical dimensions are smaller (39.5mm × 19.4mm × 18.3mm vs. 55.1mm × 32.6mm × 21.1mm).

Q3: When should MFM-05-5 be selected instead of TDK-Lambda alternatives? MFM-05-5 is selected when supply chain diversification is required, MEAN WELL-specific approvals are mandated, or superior efficiency (80%) and line regulation (±0.3%) are critical. Extended temperature range (-40°C–85°C) and broader regulatory certifications (CB, CE, cURus, EAC, TUV) support international medical and industrial applications.

Q4: Are all substitute parts compatible with the same PCB footprint? All substitute parts use 4-DIP module packaging with through-hole mounting. Physical dimensions vary: KPS5-5 and KPSA5-5 are 55.1mm × 35.1mm/32.6mm × 20.1mm/21.1mm; KPSB6-5 is 39.5mm × 19.4mm × 18.3mm; MFM-05-5 is 41.9mm × 22.4mm × 20.3mm. PCB layout verification is required for KPSB6-5 and MFM-05-5 due to smaller footprints.

Q5: Do all substitutes meet the same regulatory standards as KPS5-5? KPS5-5, KPSA5-5, and KPSB6-5 comply with IEC 60950-1 and carry CE, CSA, and UL certifications. MFM-05-5 carries CB, CE, cURus, EAC, and TUV certifications but does not specify IEC 60950-1 compliance. Application-specific regulatory requirements must be verified before selection.

Q6: What is the load regulation difference between KPS5-5 and KPSB6-5? KPS5-5 specifies ±1% load regulation; KPSB6-5 specifies ±5% load regulation. Applications requiring tighter output voltage stability under varying load conditions should prioritize KPSA5-5 or MFM-05-5, which maintain ±1% and ±0.5% load regulation respectively.

Q7: Is KPSA5-3R3 a viable substitute for any 5V application? No. KPSA5-3R3 outputs 3.3V, not 5V. It is not compatible with circuits designed for 5V operation. This part is listed only for reference and should not be selected for KPS5-5 replacement.

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