LM7906CT Linear Voltage Regulator Equivalent & Substitute Parts

Part Overview

The LM7906CT is a linear voltage regulator IC manufactured by onsemi, designed to provide a fixed negative 6V output at 1A current capacity in a TO-220-3 through-hole package. This device is classified as obsolete, making equivalent and substitute parts necessary for new designs and production continuity. The LM7906CT serves applications requiring stable negative voltage regulation with integrated over-temperature and short-circuit protection.

Substiute Parts

LM7906CT

onsemiIn Stock: 1829LM7906CT Datasheet

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MC7906CTG

onsemiIn Stock: 5383MC7906CTG Datasheet

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MC7906CT-BP

Micro Commercial CoIn Stock: 5266MC7906CT-BP Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the LM7906CT are qualified based on the following electrical and mechanical parameters:

• Output configuration must be negative
• Output voltage must be fixed at -6V
• Maximum input voltage must be -35V or greater (more negative)
• Output current capability must be 1A or greater
• Package must be TO-220-3 or compatible TO-220 variant
• Operating temperature range must cover 0°C ~ 125°C
• Protection features must include over-temperature protection

The substitute parts MC7906CTG and MC7906CT-BP meet these criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

Both MC7906CTG and MC7906CT-BP are qualified substitutes for the obsolete LM7906CT based on electrical and mechanical compatibility. Selection between substitutes should consider the following factors:

MC7906CTG (onsemi) offers improved PSRR performance at 65dB versus 60dB on the original part and maintains onsemi manufacturing continuity. This part carries ROHS3 compliance and active product status.

MC7906CT-BP (Micro Commercial Co) provides the lowest voltage dropout at 1.1V and the lowest quiescent current at 2mA, resulting in improved efficiency. This part also carries ROHS3 compliance and active product status.

Both substitute parts are electrically and mechanically compatible with the LM7906CT in TO-220-3 through-hole applications and meet the same regulatory requirements (REACH Unaffected, EAR99 classification).

Frequently Asked Questions (FAQ)

Q: Can MC7906CTG and MC7906CT-BP be used interchangeably with LM7906CT?

A: Yes. Both parts meet the core electrical specifications: -6V fixed output, 1A output current, -35V maximum input voltage, and TO-220-3 package. All three parts operate across 0°C to 125°C and include over-temperature protection.

Q: What are the key differences between the substitute parts?

A: MC7906CTG offers superior PSRR (65dB vs 60dB) and is manufactured by onsemi. MC7906CT-BP provides lower voltage dropout (1.1V vs 2V) and lower quiescent current (2mA vs 6mA), resulting in reduced power dissipation. Both are active products with ROHS3 compliance.

Q: Are there package compatibility considerations?

A: All three parts use TO-220-3 through-hole packages. The supplier device packages vary slightly (TO-220-3 for LM7906CT and MC7906CTG, TO-220AB for MC7906CT-BP), but all are mechanically compatible with standard TO-220 footprints and mounting hardware.

Q: What is the significance of the obsolete status of LM7906CT?

A: Obsolete status indicates the part is no longer manufactured. Using active substitute parts (MC7906CTG or MC7906CT-BP) ensures long-term supply availability and access to current manufacturing processes and quality standards.

Q: Do the substitute parts meet the same regulatory requirements?

A: Yes. All three parts carry REACH Unaffected status and EAR99 ECCN classification. MC7906CTG and MC7906CT-BP additionally carry ROHS3 compliance, exceeding the regulatory profile of the original LM7906CT.