SS220M035ST Aluminum Electrolytic Capacitor

Part Overview

The SS220M035ST is a 22 µF, 35 V aluminum electrolytic capacitor in radial, can packaging manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, requiring identification of active alternative models for procurement and design continuity. Equivalent and substitute parts are available from Panasonic Electronic Components and Cornell Dubilier Electronics with matching or enhanced electrical and mechanical specifications suitable for general-purpose applications.

Key Parameters

Parameter	Specification
Capacitance	22 µF
Voltage - Rated	35 V
Tolerance	±20%
ESR (Equivalent Series Resistance)	7.24 Ohm @ 120 Hz
Lifetime @ Temperature	1000 Hrs @ 85°C
Operating Temperature Range	-40°C ~ 85°C
Ripple Current @ Low Frequency	57 mA @ 120 Hz
Ripple Current @ High Frequency	65.55 mA @ 1 kHz
Lead Spacing	0.098" (2.50 mm)
Size / Dimension	0.248" Dia (6.30 mm)
Height - Seated (Max)	0.276" (7.00 mm)
Mounting Type	Through Hole
Package / Case	Radial, Can
RoHS Status	ROHS3 Compliant

Substitute Part Grouping Explanation

Substitution eligibility for the SS220M035ST is determined by the following mandatory parameters: capacitance (22 µF), tolerance (±20%), voltage rating (35 V minimum), operating temperature range (-40°C to 85°C minimum), package type (radial, can), mounting type (through hole), and lead spacing (0.098" / 2.50 mm). Parts are categorized based on deviation from these core criteria:

Parametric Equivalent (Direct Substitutes): Parts matching all primary electrical and mechanical specifications with identical voltage rating and lead spacing.

Direct Equivalents (Upgraded Voltage): Parts with rated voltage above 35 V are backward-compatible substitutes. Higher voltage rating provides greater design margin without affecting form factor or lead spacing.

Similar Substitutes: Parts with modified lead spacing, height, or extended lifetime ratings that may require PCB layout verification but maintain electrical compatibility.

Operational Equivalent: Parts with extended operating temperature range or extended lifetime ratings suitable for upgraded thermal environments.

Parameter Comparison

Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Lead Spacing	Height (Max)	Lifetime @ 85°C	Operating Temp Range	Product Status
SS220M035ST	CDE	22 µF	35 V	±20%	0.098" (2.50 mm)	0.276" (7.00 mm)	1000 Hrs	-40°C ~ 85°C	Obsolete
SK220M035ST	CDE	22 µF	35 V	±20%	0.079" (2.00 mm)	0.512" (13.00 mm)	2000 Hrs	-40°C ~ 85°C	Active
ECE-A1VKS220	Panasonic	22 µF	35 V	±20%	0.098" (2.50 mm)	0.236" (6.00 mm)	1000 Hrs	-40°C ~ 85°C	Active
ECE-A1HKA220	Panasonic	22 µF	50 V	±20%	0.098" (2.50 mm)	0.276" (7.00 mm)	1000 Hrs	-40°C ~ 85°C	Active
EEA-GA1V220	Panasonic	22 µF	35 V	±20%	0.098" (2.50 mm)	0.276" (7.00 mm)	1000 Hrs @ 105°C	-55°C ~ 105°C	Active
ECA-2AM220	Panasonic	22 µF	100 V	±20%	0.098" (2.50 mm)	0.480" (12.20 mm)	2000 Hrs	-40°C ~ 85°C	Active
ECE-A1VKA220	Panasonic	22 µF	35 V	±20%	0.098" (2.50 mm)	0.276" (7.00 mm)	1000 Hrs	-40°C ~ 85°C	Active

Engineering Selection Recommendations

Preferred Direct Substitutes: ECE-A1VKS220 and ECE-A1VKA220 (Panasonic) provide parametric equivalence with identical capacitance, voltage rating, tolerance, and lead spacing. Both are active products with RoHS3 compliance and REACH unaffected status, ensuring long-term supply chain continuity and regulatory compliance.

Voltage-Rated Upgrades: ECE-A1HKA220 (50 V) and ECA-2AM220 (100 V) are backward-compatible alternatives with higher voltage ratings suitable for designs requiring enhanced electrical margin. These parts share the same lead spacing (0.098" / 2.50 mm) and are pin-compatible drop-in replacements. Height differences must be verified against PCB layout constraints—ECA-2AM220 has increased height (0.480" / 12.20 mm) requiring layout review.

Extended Thermal Range: EEA-GA1V220 supports operation to 105°C with rated lifetime at that temperature, suitable for applications with elevated ambient or internal thermal conditions. Identical physical footprint to the main part.

Alternative Footprint: SK220M035ST (CDE) offers extended lifetime (2000 hrs @ 85°C) but with modified lead spacing (0.079" / 2.00 mm) and height (0.512" / 13.00 mm). Selection requires PCB layout compatibility verification.

Frequently Asked Questions (FAQ)

Q: Can ECE-A1VKS220 and ECE-A1VKA220 be used interchangeably with SS220M035ST?

A: Yes. Both Panasonic equivalents provide identical electrical specifications (22 µF, 35 V, ±20% tolerance) and mechanical compatibility (0.098" / 2.50 mm lead spacing, radial can package, through-hole mounting). Lead heights differ slightly—ECE-A1VKS220 is 0.236" (6.00 mm) versus the original 0.276" (7.00 mm). Verify PCB hole depth to ensure solder connection integrity.

Q: Are higher voltage-rated substitutes (50 V, 100 V) compatible?

A: Yes. ECE-A1HKA220 (50 V) and ECA-2AM220 (100 V) are pin-compatible with identical lead spacing (0.098" / 2.50 mm). Higher voltage ratings provide backward compatibility in lower-voltage applications. Note: ECA-2AM220 has increased height (0.480" / 12.20 mm) requiring clearance verification on the PCB.

Q: What are the lead spacing differences among substitutes?

A: The original SS220M035ST and most direct substitutes use 0.098" (2.50 mm) lead spacing. SK220M035ST uses 0.079" (2.00 mm) spacing. Lead spacing is critical for PCB hole patterns and must match or be field-verified before substitution.

Q: How do lifetime ratings affect part selection?

A: Lifetime ratings indicate expected capacitor service life under specified thermal conditions. SK220M035ST and ECA-2AM220 offer 2000 Hrs @ 85°C versus the original 1000 Hrs @ 85°C, providing extended reliability in continuous-duty applications. EEA-GA1V220 specifies 1000 Hrs @ 105°C, suitable for elevated-temperature environments.

Q: Is the operating temperature range the same across all substitutes?

A: Most substitutes support -40°C ~ 85°C. EEA-GA1V220 extends to -55°C ~ 105°C, enabling use in wider temperature range applications. Verify application requirements before selecting extended-range variants.

Q: Are all substitutes RoHS3 and REACH compliant?

A: Yes. All listed substitutes carry ROHS3 compliance. Panasonic parts are REACH unaffected. These certifications ensure regulatory compliance for current manufacturing and supply chain requirements.

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