KA78M06RTF Linear Voltage Regulator IC Equivalent & Substitute Parts

Part Overview

The KA78M06RTF is a linear voltage regulator IC manufactured by onsemi, designed to deliver a fixed positive 6V output at 500mA in a DPAK surface mount package. This device is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The KA78M06RTF serves as a positive fixed output regulator suitable for power management applications requiring stable 6V regulation from input sources up to 35V.

Substiute Parts

KA78M06RTF

onsemiIn Stock: 4306KA78M06RTF Datasheet

Current PartRFQ

MC78M06CDTRKG

onsemiIn Stock: 2290MC78M06CDTRKG Datasheet

Parametric EquivalentRFQ

L78M06ABDT-TR

STMicroelectronicsIn Stock: 2736L78M06ABDT-TR Datasheet

DirectRFQ

L78M06CDT-TR

STMicroelectronicsIn Stock: 35884L78M06CDT-TR Datasheet

DirectRFQ

MC78M06CDTG

onsemiIn Stock: 1323MC78M06CDTG Datasheet

SimilarRFQ

UA78M06CKVURG3

Texas InstrumentsIn Stock: 3291UA78M06CKVURG3 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the KA78M06RTF is determined by strict equivalence across the following critical parameters:

• Fixed output voltage of 6V
• Output current capability of 500mA
• Maximum input voltage of 35V or greater
• DPAK surface mount package (TO-252-3, SC-63)
• Operating temperature range compatibility (0°C ~ 125°C minimum)
• Protection features (Over Temperature and Short Circuit minimum)

Substitute parts are grouped into three categories based on their relationship to the main part:

Parametric Equivalent: MC78M06CDTRKG (onsemi) — identical electrical specifications and active product status.

Direct Manufacturer Equivalents: L78M06ABDT-TR and L78M06CDT-TR (STMicroelectronics) — meet all electrical and mechanical requirements with active product status.

Similar Parts: MC78M06CDTG (onsemi) and UA78M06CKVURG3 (Texas Instruments) — functionally equivalent with minor parameter variations or different product status.

Parameter Comparison

Engineering Selection Recommendations

Primary Recommendation: MC78M06CDTRKG (onsemi) is the preferred substitute. It maintains identical electrical specifications to the KA78M06RTF, carries active product status, and is ROHS3 compliant with unlimited moisture sensitivity rating. This part provides direct functional replacement with assured long-term availability.

Secondary Recommendations: L78M06CDT-TR (STMicroelectronics) is the highest-inventory alternative with 35,785 units in stock. It meets all electrical and mechanical requirements, is ROHS3 compliant, and carries active product status. L78M06ABDT-TR offers extended operating temperature range (-40°C ~ 125°C) and additional over-current protection, suitable for applications requiring enhanced thermal performance.

Alternative Options: MC78M06CDTG (onsemi) provides electrical equivalence but carries obsolete product status, limiting its suitability for new designs. UA78M06CKVURG3 (Texas Instruments) is available but has a reduced maximum input voltage specification (25V versus 35V) and Last Time Buy status, making it suitable only for applications with input voltages below 25V.

Frequently Asked Questions (FAQ)

Q: Can I use L78M06CDT-TR as a direct replacement for KA78M06RTF?

A: Yes. L78M06CDT-TR meets all critical electrical parameters (6V output, 500mA current, 35V maximum input) and uses the identical DPAK package. Both parts are ROHS3 compliant and operate within the 0°C ~ 125°C temperature range. The primary difference is that L78M06CDT-TR includes over-current protection in addition to over-temperature and short-circuit protection.

Q: What is the difference between MC78M06CDTRKG and MC78M06CDTG?

A: Both parts are manufactured by onsemi with identical electrical specifications and PSRR performance. The key difference is product status: MC78M06CDTRKG is active with assured availability, while MC78M06CDTG is obsolete. For new designs and ongoing production, MC78M06CDTRKG is the appropriate choice.

Q: Why does UA78M06CKVURG3 have a lower maximum input voltage (25V vs 35V)?

A: UA78M06CKVURG3 is specified with a 25V maximum input voltage, which is a design parameter difference from the KA78M06RTF (35V maximum). This part is suitable only for applications where the input voltage does not exceed 25V. For applications requiring the full 35V input capability, use MC78M06CDTRKG, L78M06CDT-TR, or L78M06ABDT-TR.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All substitute parts use the TO-252-3 DPAK package (SC-63) with identical pinout and footprint. They are direct mechanical replacements suitable for the same PCB layout without modification.

Q: Which substitute part has the best long-term availability?

A: L78M06CDT-TR (STMicroelectronics) has the highest inventory level at 35,785 units in stock and carries active product status, ensuring continued availability. MC78M06CDTRKG (onsemi) is also active with 2,210 units available.

Q: Do all substitute parts meet RoHS compliance?

A: All active substitute parts (MC78M06CDTRKG, L78M06ABDT-TR, L78M06CDT-TR, and UA78M06CKVURG3) are ROHS3 compliant. The original KA78M06RTF RoHS status is not specified in the provided data.