MAX6350EPA+ Equivalent & Substitute Parts

Part Overview

The MAX6350EPA+ is a Series, Buried Zener Voltage Reference IC manufactured by Analog Devices Inc./Maxim Integrated. This through-hole 8-DIP component provides a fixed 5V output with ±0.02% tolerance and is designed for precision voltage reference applications requiring low noise and high stability across industrial temperature ranges. The product is currently obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

MAX6350EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 938MAX6350EPA+ Datasheet

Current PartRFQ

MAX6350EPA+

Analog Devices Inc./Maxim IntegratedIn Stock: 938MAX6350EPA+ Datasheet

DirectRFQ

MAX8069ESA+

Analog Devices Inc./Maxim IntegratedIn Stock: 2943MAX8069ESA+ Datasheet

DirectRFQ

LT1027BCN8-5#PBF

Analog Devices Inc.In Stock: 2517LT1027BCN8-5#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the MAX6350EPA+ is determined by the following critical parameters:

Primary Substitution Criteria:

• Reference Type: Series voltage reference architecture
• Output Voltage: Fixed 5V output
• Output Current: 15 mA capability
• Mounting Type: Through-hole 8-DIP package compatibility
• Tolerance and Temperature Coefficient: Precision specifications within acceptable operational limits
• Input Voltage Range: Compatibility with 8V ~ 36V supply rails
• Operating Temperature: -40°C ~ 85°C range support

Substitute Categories:

1. Direct Equivalent (Same Architecture & Package): LT1027BCN8-5#PBF — Series voltage reference in 8-DIP package with identical 5V output and 15 mA current rating. Manufacturer-recommended substitute with active product status.

2. Functional Alternative (Different Architecture): MAX8069ESA+ — Shunt voltage reference with different output voltage (1.22V) and package (8-SOIC surface mount). Not a direct pin-for-pin replacement due to architectural and packaging differences.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Recommended Primary Path):

The LT1027BCN8-5#PBF is the manufacturer-recommended substitute for the MAX6350EPA+. Both components share identical 5V output voltage, 15 mA output current, and 8-DIP through-hole package. The LT1027BCN8-5#PBF maintains active product status with ROHS3 compliance and REACH unaffected certification. The tolerance specification (±0.05% versus ±0.02%) and temperature coefficient (2 ppm/°C versus 1.5 ppm/°C) represent minor degradation acceptable for most industrial applications. Operating temperature range narrows to 0°C ~ 70°C, requiring verification against system requirements if extended low-temperature operation below 0°C is necessary.

For Alternative Architectures:

The MAX8069ESA+ is not recommended as a direct substitute due to fundamental differences: shunt reference architecture, 1.22V output voltage, 5 mA output current limitation, and 8-SOIC surface-mount package. This component requires complete circuit redesign and is suitable only for applications with different voltage reference requirements and PCB layout constraints.

Compliance Considerations:

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with existing supply chain and environmental requirements.

Frequently Asked Questions (FAQ)

Q: Can the LT1027BCN8-5#PBF replace the MAX6350EPA+ in existing designs?

A: Yes, for most applications. Both components provide 5V fixed output at 15 mA in identical 8-DIP through-hole packages. Verify that your circuit operates within the LT1027BCN8-5#PBF operating temperature range (0°C ~ 70°C). If your system requires operation below 0°C, the MAX6350EPA+ extended range (-40°C ~ 85°C) cannot be matched by this substitute.

Q: What is the difference between Series and Shunt voltage references?

A: Series references (MAX6350EPA+, LT1027BCN8-5#PBF) are placed in series with the load and regulate output voltage by controlling series resistance. Shunt references (MAX8069ESA+) are placed in parallel with the load and regulate by shunting current to ground. These architectures require different circuit designs and are not interchangeable without redesign.

Q: Why is the MAX8069ESA+ listed if it cannot replace the MAX6350EPA+?

A: The MAX8069ESA+ is included as a functional alternative for applications requiring a 1.22V reference voltage or surface-mount packaging. It is not a substitute for the MAX6350EPA+ in existing 5V reference circuits.

Q: Does the tolerance difference between MAX6350EPA+ (±0.02%) and LT1027BCN8-5#PBF (±0.05%) affect circuit performance?

A: The tolerance difference is 0.03%, which may be significant in precision analog circuits requiring sub-0.02% accuracy. Evaluate your specific application requirements. For general industrial applications, the ±0.05% tolerance is typically acceptable.

Q: Are all substitute parts RoHS compliant?

A: Yes. The MAX6350EPA+, LT1027BCN8-5#PBF, and MAX8069ESA+ are all ROHS3 compliant with MSL 1 (Unlimited) moisture sensitivity rating.