SN471M035ST Equivalent & Substitute Parts

Part Overview

The SN471M035ST is a 470 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The part operates across a temperature range of -40°C to 85°C and is rated for 1000 hours at 85°C, suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

SN471M035ST

Cornell Dubilier Electronics (CDE)In Stock: 780SN471M035ST Datasheet

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ECE-A1HN471U

Panasonic Electronic ComponentsIn Stock: 1285ECE-A1HN471U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN471M035ST is determined by the following critical parameters:

Electrical Compatibility:

• Capacitance value must be 470 µF
• Tolerance must be ±20%
• Voltage rating must be equal to or greater than 35 V
• Polarization must be Bi-Polar

Mechanical Compatibility:

• Lead spacing must be 0.295" (7.50 mm)
• Physical dimensions (diameter and height) must accommodate the same PCB footprint
• Mounting type must be Through Hole
• Package type must be Radial, Can

Regulatory Compliance:

• RoHS3 compliance required

The substitute part ECE-A1HN471U meets all electrical and mechanical compatibility criteria while offering improved performance characteristics and active product status.

Parameter Comparison

Engineering Selection Recommendations

The ECE-A1HN471U from Panasonic Electronic Components is a direct substitute for the obsolete SN471M035ST. Selection is based on the following factors:

Electrical Equivalence: Both parts maintain identical capacitance (470 µF) and tolerance (±20%). The substitute features a higher voltage rating (50 V versus 35 V), which provides additional design margin and does not compromise circuit operation in applications rated for 35 V.

Mechanical Compatibility: Lead spacing, package type, and mounting configuration are identical. The substitute height (1.240" maximum) is marginally shorter than the original (1.260" maximum), ensuring compatibility with existing PCB layouts.

Product Status and Compliance: The substitute is an active product with ROHS3 compliance, ensuring long-term availability and regulatory adherence. The original part's obsolete status necessitates this substitution for continued production support.

Performance Enhancement: The substitute offers doubled thermal lifetime (2000 hours at 85°C versus 1000 hours), improving reliability in extended-use applications.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1HN471U replace SN471M035ST in all applications?

A: Yes. The substitute meets all electrical and mechanical compatibility requirements. The higher voltage rating (50 V) does not create incompatibility in 35 V circuits. Physical dimensions and lead spacing are equivalent, ensuring direct PCB compatibility.

Q: What is the significance of the voltage rating difference?

A: The substitute's 50 V rating exceeds the original 35 V specification. In circuit applications, a component rated for higher voltage than required operates safely and does not affect circuit performance. This provides additional design margin.

Q: Are the physical dimensions truly compatible?

A: Yes. Both parts share identical lead spacing (0.295" / 7.50 mm) and diameter (0.630" / 16.00 mm). The substitute height (1.240" maximum) is 0.020" shorter than the original (1.260" maximum), which does not create clearance issues in standard through-hole PCB layouts.

Q: What is the difference in thermal lifetime?

A: The substitute provides 2000 hours at 85°C compared to the original's 1000 hours. This doubled lifetime indicates improved thermal stability and longer operational life in temperature-stressed applications.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the original SN471M035ST and substitute ECE-A1HN471U are ROHS3 compliant, meeting current environmental and regulatory standards.

Q: Why is the original part obsolete?

A: The SN471M035ST is classified as obsolete by the manufacturer. The ECE-A1HN471U provides equivalent functionality with active product status, ensuring continued availability and manufacturer support.