AN79L05ME1 Equivalent & Substitute Parts

Part Overview

The AN79L05ME1 is a linear voltage regulator IC from Panasonic Electronic Components designed to provide a fixed negative 5V output at 100mA. This surface-mount device operates across a 0°C to 100°C temperature range and includes over-current and over-temperature protection features. The part is classified as obsolete, making equivalent substitute components necessary for new designs and ongoing production requirements.

Substiute Parts

AN79L05ME1

Panasonic Electronic ComponentsIn Stock: 2060AN79L05ME1 Datasheet

Current PartRFQ

L79L05ACUTR

STMicroelectronicsIn Stock: 56972L79L05ACUTR Datasheet

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LT1175CST-5#TRPBF

Analog Devices Inc.In Stock: 6104LT1175CST-5#TRPBF Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AN79L05ME1 are identified based on the following critical parameters that define functional equivalence:

Core Electrical Specifications:

• Output voltage: -5V fixed
• Output configuration: Negative
• Minimum output current capability: 100mA or greater
• Input voltage range compatibility: Must accommodate -35V maximum input

Mechanical & Environmental Compatibility:

• Surface-mount packaging
• Operating temperature range: Minimum 0°C to 100°C (or extended range)
• Moisture sensitivity level: MSL 1 or better

Protection & Reliability:

• Over-temperature protection (mandatory)
• Over-current or short-circuit protection

The two substitute parts listed below meet these criteria while offering active product status and improved availability compared to the obsolete AN79L05ME1.

Parameter Comparison

Engineering Selection Recommendations

L79L05ACUTR (STMicroelectronics) provides the closest electrical and mechanical match to the AN79L05ME1. Both devices share identical output current (100mA) and package form factor (TO-243AA). The STMicroelectronics part maintains active product status with ROHS3 compliance and extended operating temperature range (0°C to 125°C). The maximum input voltage specification (-30V) is slightly reduced compared to the original (-35V), which is acceptable for most applications within standard negative supply rails. This substitute is recommended for direct replacement in existing designs.

LT1175CST-5#TRPBF (Analog Devices Inc.) offers higher output current capability (500mA versus 100mA) and significantly lower quiescent current (80 µA versus 5 mA), making it suitable for applications requiring improved efficiency or higher current delivery. The package form factor differs (SOT-223-3 versus TO-243AA), requiring PCB layout modification. The maximum input voltage specification (-20V) is further reduced. This substitute is recommended when higher output current or lower standby power consumption is required and PCB redesign is feasible.

Both substitute parts carry active product status, ROHS3 compliance, and MSL 1 moisture sensitivity rating, ensuring long-term availability and environmental regulatory alignment.

Frequently Asked Questions (FAQ)

Q: Can L79L05ACUTR be used as a direct replacement for AN79L05ME1?

A: Yes. Both parts share the same output voltage (-5V), output current (100mA), and package form factor (TO-243AA). The L79L05ACUTR is electrically compatible and offers active product status. PCB layout modifications are not required.

Q: What is the key difference between the two substitute parts?

A: The L79L05ACUTR maintains the original 100mA output current specification and identical package, while the LT1175CST-5#TRPBF provides 500mA output current but requires a different package (SOT-223-3) and PCB redesign. The LT1175 also features significantly lower quiescent current (80 µA).

Q: Does the reduced maximum input voltage on substitute parts affect compatibility?

A: The L79L05ACUTR supports -30V maximum input (versus -35V on the original), and the LT1175CST-5#TRPBF supports -20V maximum input. For applications using standard negative supply rails (-12V, -15V, or -24V), both substitutes are fully compatible. Applications requiring input voltages exceeding -30V should verify the L79L05ACUTR specification or consider the original part if still available.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both L79L05ACUTR and LT1175CST-5#TRPBF carry ROHS3 compliance certification, meeting current environmental regulatory requirements.

Q: Which substitute should be selected for new designs?

A: For direct replacement with minimal redesign, select L79L05ACUTR. For applications requiring higher output current or lower power consumption, select LT1175CST-5#TRPBF, accounting for package and PCB layout changes.