KPS5-12 Equivalent & Substitute Parts

Part Overview

The KPS5-12 is an open frame AC/DC converter manufactured by TDK-Lambda Americas Inc, rated for 5W output power at 12V with 420mA maximum current. This unit features universal input voltage range (85–264 VAC) and is designed for ITE (Commercial) applications. The KPS5-12 is classified as Obsolete, necessitating identification of equivalent and substitute components for ongoing system support and new designs. Active alternatives with compatible electrical and mechanical specifications are available within the TDK-Lambda KPS series product line.

Substiute Parts

KPS5-12

TDK-Lambda Americas IncIn Stock: 939KPS5-12 Datasheet

Current PartRFQ

KPSA5-12

TDK-Lambda Americas IncIn Stock: 1272KPSA5-12 Datasheet

DirectRFQ

KPSB6-12

TDK-Lambda Americas IncIn Stock: 891KPSB6-12 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KPS5-12 are identified based on strict alignment with the following critical parameters:

Electrical Compatibility:

• Output voltage: 12V (fixed requirement)
• Input voltage range: 85–264 VAC minimum (universal input)
• Single output configuration
• Power rating: 5W or higher
• Current output capacity: ≥420mA

Mechanical Compatibility:

• Mounting type: Through Hole
• Package type: 4-DIP Module
• Form factor: Open Frame

Regulatory & Compliance:

• RoHS Compliant status
• Approval agencies: CE, CSA, EN, UL minimum
• Standard compliance: 60950-1

Two substitute parts meet these criteria:

1. KPSA5-12 – Direct series equivalent with identical electrical ratings and improved efficiency
2. KPSB6-12 – Higher power rating (6W) with enhanced current capacity and extended temperature range

Parameter Comparison

Engineering Selection Recommendations

KPSA5-12 Selection Criteria:

The KPSA5-12 is the direct functional equivalent of the KPS5-12. Both units share identical electrical specifications (5W, 12V output, 85–264 VAC input), mounting configuration (Through Hole, 4-DIP Module), and regulatory compliance (CE, CSA, EN, UL, 60950-1). The KPSA5-12 is currently in Active product status with higher inventory availability (1186 units). This substitute is suitable for direct replacement in applications where the original KPS5-12 specifications are required. The KPSA5-12 demonstrates improved efficiency (72% vs. 70%), providing marginal thermal performance gains. Dimensional variations are minor (width: 32.6mm vs. 35.1mm; height: 21.1mm vs. 20.1mm), requiring verification of PCB layout constraints.

KPSB6-12 Selection Criteria:

The KPSB6-12 is a higher-capacity substitute with enhanced performance characteristics. It maintains the 12V output voltage and Through Hole, 4-DIP Module form factor. The KPSB6-12 provides increased power rating (6W vs. 5W) and higher maximum output current (500mA vs. 420mA), supporting applications with greater current demand. This unit features superior efficiency (81%), extended operating temperature range (−40°C to 80°C vs. 0°C to 70°C), and additional regulatory approval (FCC). The KPSB6-12 is significantly smaller (39.5 × 19.4 × 18.3mm vs. 55.1 × 35.1 × 20.1mm), offering space advantages in compact designs. Input voltage range is narrower (90–264 VAC vs. 85–264 VAC). Line and load regulation specifications are relaxed (±1% and ±3% respectively vs. ±0.5% and ±1%), which may impact precision applications. The KPSB6-12 is suitable for applications requiring higher current capacity, improved thermal performance, or extended temperature operation.

Frequently Asked Questions (FAQ)

Q: Can the KPSA5-12 be used as a direct replacement for the KPS5-12?

A: Yes. The KPSA5-12 maintains identical electrical specifications (5W, 12V, 420mA capability, 85–264 VAC input), mounting type (Through Hole), and package configuration (4-DIP Module). Both units comply with the same regulatory standards (CE, CSA, EN, UL, 60950-1). Minor dimensional differences require verification of PCB layout compatibility.

Q: What are the key differences between KPSA5-12 and KPSB6-12?

A: The KPSA5-12 is a direct equivalent with matched electrical ratings. The KPSB6-12 is a higher-capacity alternative offering 6W power, 500mA output current, superior efficiency (81%), extended temperature range (−40°C to 80°C), and a smaller footprint. The KPSB6-12 has a narrower input voltage range (90–264 VAC) and relaxed regulation specifications (±1% line, ±3% load).

Q: Is the KPSB6-12 physically compatible with the KPS5-12 footprint?

A: No. The KPSB6-12 is significantly smaller (39.5 × 19.4 × 18.3mm vs. 55.1 × 35.1 × 20.1mm). While both use Through Hole mounting and 4-DIP Module packaging, PCB layout modifications are required. The reduced size may provide design flexibility in space-constrained applications.

Q: Which substitute should be selected for applications requiring extended temperature operation?

A: The KPSB6-12 supports operating temperatures from −40°C to 80°C, compared to 0°C to 70°C for both the KPS5-12 and KPSA5-12. Selection of the KPSB6-12 is appropriate for applications requiring operation outside the 0°C to 70°C range.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both KPSA5-12 and KPSB6-12 are RoHS Compliant and meet the same regulatory approval requirements (CE, CSA, UL, 60950-1) as the original KPS5-12.

Q: What is the minimum input voltage for each part?

A: KPS5-12 and KPSA5-12 support 85 VAC minimum input. KPSB6-12 requires 90 VAC minimum input. Applications operating below 90 VAC must use KPS5-12 or KPSA5-12.

Q: How do the efficiency ratings compare?

A: KPS5-12: 70%, KPSA5-12: 72%, KPSB6-12: 81%. The KPSB6-12 provides the highest efficiency, resulting in reduced thermal dissipation and improved power conversion performance.