KAS2-15 AC/DC Converter Equivalent & Substitute Parts

Part Overview

The KAS2-15 is an enclosed AC/DC converter manufactured by TDK-Lambda Americas Inc, rated for 15V output at 2W power with 133mA maximum current. This component is designed for ITE (Commercial) applications and accepts 90–305 VAC input. The KAS2-15 is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations.

Substiute Parts

KAS2-15

TDK-Lambda Americas IncIn Stock: 748KAS2-15 Datasheet

Current PartRFQ

KPSB6-15-E

TDK-Lambda Americas IncIn Stock: 894KPSB6-15-E Datasheet

MFR RecommendedRFQ

TMPS 03-115

Traco PowerIn Stock: 978TMPS 03-115 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the KAS2-15 are selected based on the following critical parameters:

Output Voltage: All substitutes must provide 15V output to maintain circuit compatibility.

Mounting Type: All substitutes must use through-hole mounting to ensure PCB compatibility.

Input Voltage Range: Substitutes must accept the operational input voltage range of the original part or a compatible superset thereof.

Power and Current Ratings: Substitutes must meet or exceed the 2W power and 133mA current requirements to ensure adequate power delivery without derating.

Regulatory Compliance: Substitutes must maintain RoHS compliance and possess relevant safety certifications (CE, cURus, UL, CSA, FCC, or CB).

Product Status: Active status substitutes are preferred for long-term availability and support.

The two identified substitutes—KPSB6-15-E and TMPS 03-115—satisfy these criteria while offering enhanced specifications in power rating, efficiency, and input voltage flexibility.

Parameter Comparison

Engineering Selection Recommendations

KPSB6-15-E (TDK-Lambda Americas Inc)

The KPSB6-15-E is a direct manufacturer alternative from TDK-Lambda Americas Inc with active product status. It provides 6W power and 400mA output current, exceeding the KAS2-15 specifications. The KPSB6-15-E operates within the same temperature range (–40°C to 80°C) and maintains higher efficiency at 81%. Input voltage range is 90–264 VAC, which covers the KAS2-15 operational window. The 4-DIP package differs from the original 5-DIP, requiring PCB layout verification. Certifications include CE, CSA, FCC, and UL, providing broader regulatory coverage than the original part.

TMPS 03-115 (Traco Power)

The TMPS 03-115 is an active product from Traco Power offering 3W power and 200mA output current. It maintains the original 5-DIP package format, simplifying PCB integration. Input voltage acceptance spans 85–264 VAC and 120–370 VDC, providing extended input flexibility. Operating temperature range is –25°C to 70°C, which is narrower than the KAS2-15 but suitable for most ITE applications. Efficiency is 78%. Certifications include CB, CE, and cURus, matching the original compliance profile.

Selection Basis:

Choose KPSB6-15-E for applications requiring maximum power headroom, broader regulatory certifications, and manufacturer continuity within the TDK-Lambda product family. Choose TMPS 03-115 for applications where package footprint compatibility is critical and extended input voltage range is beneficial.

Frequently Asked Questions (FAQ)

Q: Can the KAS2-15 be directly replaced with either substitute without PCB modification?

A: The TMPS 03-115 uses the same 5-DIP package as the KAS2-15, allowing direct pin-compatible substitution. The KPSB6-15-E uses a 4-DIP package, requiring PCB layout review and potential adapter consideration.

Q: What is the maximum output current each substitute can deliver?

A: The KAS2-15 delivers 133mA maximum. The KPSB6-15-E delivers 400mA, and the TMPS 03-115 delivers 200mA. Both substitutes exceed the original specification.

Q: Are there input voltage range limitations with the substitutes?

A: The KAS2-15 accepts 90–305 VAC. The KPSB6-15-E accepts 90–264 VAC, which covers standard utility ranges but does not extend to the upper 305 VAC limit. The TMPS 03-115 accepts 85–264 VAC AC or 120–370 VDC, providing DC input capability not present in the original.

Q: Do the substitutes maintain the same operating temperature range?

A: The KPSB6-15-E maintains the identical –40°C to 80°C range. The TMPS 03-115 operates from –25°C to 70°C, which is narrower. Verify application temperature requirements before selection.

Q: Are both substitutes RoHS compliant?

A: Yes. The KPSB6-15-E is RoHS Compliant. The TMPS 03-115 is ROHS3 Compliant. Both meet current RoHS requirements.

Q: Which substitute offers better efficiency?

A: The KPSB6-15-E provides 81% efficiency, compared to 73% for the KAS2-15 and 78% for the TMPS 03-115.

Q: What certifications do the substitutes carry?

A: The KPSB6-15-E carries CE, CSA, FCC, and UL certifications. The TMPS 03-115 carries CB, CE, and cURus certifications. Both include CE marking required for European markets.