SK010M350ST Equivalent & Substitute Parts

Part Overview

The SK010M350ST is a 1 µF, 350 V aluminum electrolytic capacitor in radial configuration manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active and is widely used in general-purpose applications requiring polarized capacitive energy storage. Alternative parts are necessary when inventory constraints exist, when enhanced electrical performance characteristics are required, or when operating conditions exceed the original component's rated specifications.

Substiute Parts

SK010M350ST

Cornell Dubilier Electronics (CDE)In Stock: 918SK010M350ST Datasheet

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UVR2G010MPD

NichiconIn Stock: 7557UVR2G010MPD Datasheet

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ECA-2WHG010

Panasonic Electronic ComponentsIn Stock: 274108ECA-2WHG010 Datasheet

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ECA-2WM010

Panasonic Electronic ComponentsIn Stock: 3097ECA-2WM010 Datasheet

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UVR2W010MPD

NichiconIn Stock: 3887UVR2W010MPD Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the SK010M350ST is permissible based on alignment of the following critical parameters:

Mandatory Compatibility Parameters:

• Capacitance: 1 µF (fixed value)
• Tolerance: ±20% (must match)
• Package / Case: Radial, Can (mechanical compatibility)
• Mounting Type: Through Hole (PCB integration requirement)
• Lead Spacing: 0.138" (3.50mm) (pinout compatibility)
• Physical Dimensions: Case size 0.315" Dia (8.00mm), height considerations within 0.512" maximum

Allowable Variation Parameters:

• Voltage - Rated: 350 V or higher (uprating acceptable for safety margin)
• Operating Temperature: -25°C ~ 85°C baseline; extended ranges acceptable
• Lifetime @ Temperature: 2000 Hrs @ 85°C minimum
• ESR and Ripple Current: Variation acceptable within same electrical class
• RoHS Status: ROHS3 Compliant or equivalent

The substitute parts listed (UVR2G010MPD, UVR2W010MPD, ECA-2WM010, ECA-2WHG010) meet all mandatory compatibility parameters while providing equal or enhanced electrical characteristics.

Parameter Comparison

Engineering Selection Recommendations

Active Status Parts (Preferred for New Designs):

ECA-2WM010 (Panasonic, 450 V, -25°C ~ 85°C) and ECA-2WHG010 (Panasonic, 450 V, -25°C ~ 105°C) are classified as Active and suitable for new design implementations. Both parts exceed the voltage rating of the SK010M350ST while maintaining identical capacitance and tolerance specifications. ECA-2WHG010 provides extended temperature operation to 105°C, supporting applications in thermally demanding environments.

Not For New Designs Classification:

UVR2G010MPD and UVR2W010MPD (Nichicon) are designated as Not For New Designs. These parts remain functionally compatible with SK010M350ST applications but should not be selected for products in active development or future production cycles.

Voltage Uprating Consideration:

All substitute parts are rated at 400 V or 450 V, exceeding the original 350 V specification. This uprating provides design margin and is electrically permissible. Height reductions in ECA-2WM010 and ECA-2WHG010 (0.492" vs. 0.512") do not impact mounting compatibility on standard through-hole PCB layouts.

Frequently Asked Questions (FAQ)

Q: Can UVR2G010MPD or UVR2W010MPD replace SK010M350ST in new product designs?

A: Both Nichicon parts are functionally compatible regarding capacitance, voltage uprating, and mechanical dimensions. However, they are classified as Not For New Designs. For new product development, ECA-2WM010 or ECA-2WHG010 (Panasonic, Active status) are the recommended selections.

Q: What is the advantage of selecting ECA-2WHG010 over ECA-2WM010?

A: ECA-2WHG010 supports extended operating temperature to 105°C and offers guaranteed lifetime of 2000 Hrs @ 105°C. ECA-2WM010 operates to 85°C with 2000 Hrs @ 85°C lifetime. Selection between these depends on circuit thermal environment and application duration requirements.

Q: Are the physical dimensions of all substitute parts compatible with the original SK010M350ST footprint?

A: Yes. All parts share identical lead spacing (0.138" / 3.50mm) and case diameter (0.315" / 8.00mm), ensuring direct PCB mounting compatibility. ECA-2WM010 and ECA-2WHG010 are 0.02" (0.5mm) shorter in maximum height, which does not compromise placement or clearance on standard through-hole layouts.

Q: Is voltage uprating from 350 V to 450 V acceptable?

A: Yes. Substituting with a higher voltage-rated capacitor is electrically permissible and provides design safety margin. The capacitance, tolerance, and package remain identical, ensuring circuit behavior equivalence.

Q: What is the difference in ripple current handling between substitute parts?

A: Ripple current specifications vary among substitutes. ECA-2WM010 exhibits the highest ripple current capability at 37 mA @ 120 Hz and 62.9 mA @ 10 kHz. Applications with high ripple current requirements should reference the specific ripple current rating of the selected substitute.

Q: Are all parts RoHS3 compliant?

A: Yes. SK010M350ST and all substitute parts are certified ROHS3 Compliant, satisfying regulatory requirements for hazardous substance restrictions.