SN220M035ST Equivalent & Substitute Parts

Part Overview

The SN220M035ST is a 22 µF, 35 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing system support and component procurement.

The SN220M035ST serves general-purpose applications requiring through-hole mounting with bi-polar polarization. Due to its obsolete status, sourcing direct replacements from active product lines is necessary to maintain supply chain continuity and ensure long-term availability.

Substiute Parts

SN220M035ST

Cornell Dubilier Electronics (CDE)In Stock: 964SN220M035ST Datasheet

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ECE-A1HN220U

Panasonic Electronic ComponentsIn Stock: 2056ECE-A1HN220U Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN220M035ST is determined by the following critical parameters:

Electrical Parameters:

• Capacitance value: 22 µF (exact match required)
• Tolerance: ±20% (standard tolerance class)
• Voltage rating: Minimum 35 V (equal or higher ratings are acceptable)
• Operating temperature range: -40°C ~ 85°C (must encompass or match)
• Polarization: Bi-Polar (functional requirement)

Mechanical Parameters:

• Lead spacing: 0.138" (3.50 mm) (PCB layout compatibility)
• Case diameter: 0.315" (8.00 mm) (physical fit)
• Height - seated: 0.453" (11.50 mm) (clearance requirement)
• Mounting type: Through Hole (assembly process compatibility)
• Package / Case: Radial, Can (form factor requirement)

Compliance Parameters:

• RoHS3 Compliant status (regulatory requirement)

The ECE-A1HN220U from Panasonic Electronic Components meets all critical substitution criteria. This part maintains identical capacitance, tolerance, mechanical dimensions, and mounting configuration while providing a higher voltage rating (50 V) and extended lifetime rating (2000 Hrs @ 85°C), both of which are compatible with the original application requirements.

Parameter Comparison

Engineering Selection Recommendations

The ECE-A1HN220U is a direct functional substitute for the obsolete SN220M035ST based on the following engineering criteria:

Electrical Compatibility: Both parts share identical capacitance (22 µF), tolerance (±20%), and operating temperature range (-40°C ~ 85°C). The ECE-A1HN220U provides a higher voltage rating (50 V versus 35 V), which is compatible with applications designed for the original 35 V part and provides additional voltage margin.

Mechanical Compatibility: Lead spacing, case diameter, and seated height are identical between both parts, ensuring direct PCB footprint compatibility without layout modifications.

Regulatory Compliance: Both parts are ROHS3 compliant, meeting current environmental and regulatory requirements for electronic component procurement.

Product Status: The ECE-A1HN220U is classified as active product, ensuring long-term availability and supply chain stability compared to the obsolete SN220M035ST.

Lifetime Enhancement: The ECE-A1HN220U provides extended lifetime rating (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C), which is compatible with and exceeds the original specification.

Frequently Asked Questions (FAQ)

Q: Can the ECE-A1HN220U directly replace the SN220M035ST without PCB modifications?

A: Yes. Both parts have identical lead spacing (0.138" / 3.50 mm), case diameter (0.315" / 8.00 mm), and seated height (0.453" / 11.50 mm). No PCB layout changes are required.

Q: Why is the ECE-A1HN220U rated for 50 V when the original part is 35 V?

A: Higher voltage ratings are compatible with applications designed for lower voltages. The 50 V rating provides additional voltage margin and does not affect circuit operation in a 35 V application.

Q: Are there any electrical performance differences between these parts?

A: Both parts maintain the same capacitance (22 µF) and tolerance (±20%). The ECE-A1HN220U provides extended lifetime (2000 Hrs @ 85°C versus 1000 Hrs @ 85°C), which is a performance enhancement.

Q: Is the ECE-A1HN220U available in the same packaging as the SN220M035ST?

A: Yes. Both parts use radial, can package with through-hole mounting configuration. The ECE-A1HN220U is supplied in bulk packaging.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the SN220M035ST and ECE-A1HN220U are ROHS3 compliant, meeting current environmental regulations for electronic component procurement.

Q: What is the lead spacing specification for these capacitors?

A: Both parts have a lead spacing of 0.138 inches (3.50 mm), which is the standard pitch for radial aluminum electrolytic capacitors in this size class.