SK010M400ST Equivalent & Substitute Parts Reference

Part Overview

The SK010M400ST is a 1 µF, 400 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as Active product status and is designed for general-purpose applications requiring polar electrolytic capacitor functionality. The part operates across a temperature range of -25°C to 85°C with a rated lifetime of 2000 hours at 85°C.

Equivalent and substitute parts become necessary when the original SK010M400ST is unavailable, when design requirements demand enhanced performance characteristics such as higher voltage ratings or extended temperature ranges, or when supply chain optimization requires alternative qualified sources. The substitute parts listed maintain electrical and mechanical compatibility while offering variations in performance parameters and operational specifications.

Substiute Parts

SK010M400ST

Cornell Dubilier Electronics (CDE)In Stock: 787SK010M400ST Datasheet

Current PartRFQ

UVR2G010MPD

NichiconIn Stock: 7557UVR2G010MPD Datasheet

DirectRFQ

ECA-2WHG010

Panasonic Electronic ComponentsIn Stock: 274108ECA-2WHG010 Datasheet

UpgradeRFQ

ECA-2WM010

Panasonic Electronic ComponentsIn Stock: 3097ECA-2WM010 Datasheet

UpgradeRFQ

UVR2W010MPD

NichiconIn Stock: 3887UVR2W010MPD Datasheet

UpgradeRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SK010M400ST is determined by strict adherence to the following critical parameters:

Mandatory Compatibility Parameters:

• Capacitance: 1 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Package / Case: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.138" (3.50mm) (exact match required)
• Size / Dimension: 0.315" Dia (8.00mm) (exact match required)

Allowable Variation Parameters:

• Voltage - Rated: 400 V minimum (higher ratings are acceptable as upgrades)
• Operating Temperature Range: -25°C minimum lower bound; 85°C minimum upper bound (extended ranges are acceptable)
• Lifetime @ Temperature: 2000 Hrs @ 85°C minimum (extended lifetimes are acceptable)
• Height - Seated (Max): Variations within 0.512" (13.00mm) maximum are acceptable

The substitute parts are grouped into two categories: Direct Equivalents (matching 400 V rating) and Upgrade Substitutes (higher voltage ratings with enhanced thermal performance).

Parameter Comparison

Engineering Selection Recommendations

Direct Equivalent Substitutes (400 V Rating):

UVR2G010MPD (Nichicon) serves as a direct electrical equivalent to the SK010M400ST. Both components maintain identical capacitance, voltage rating, tolerance, and physical dimensions. The UVR2G010MPD extends the lower operating temperature limit to -40°C, providing enhanced cold-temperature performance. However, this part carries a "Not For New Designs" product status designation, indicating it is suitable for replacement and maintenance applications only, not for new product development.

Upgrade Substitutes (450 V Rating):

ECA-2WHG010 (Panasonic) and ECA-2WM010 (Panasonic) are upgrade substitutes offering 450 V rated voltage, representing a 12.5% increase over the original 400 V specification. Both parts maintain Active product status, indicating suitability for new designs. ECA-2WHG010 provides extended operating temperature range to 105°C with lifetime rating of 2000 hours at 105°C, delivering superior thermal performance. ECA-2WM010 maintains the original -25°C to 85°C temperature range but offers significantly higher ripple current capability (37 mA @ 120 Hz and 62.9 mA @ 10 kHz compared to 18 mA @ 120 Hz for the original part).

UVR2W010MPD (Nichicon) is a 450 V upgrade substitute with "Not For New Designs" status, suitable for replacement applications where higher voltage margin is required.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, ensuring regulatory compatibility with the original SK010M400ST.

Frequently Asked Questions (FAQ)

Q: Can I use a 450 V rated substitute in place of the 400 V SK010M400ST?

A: Yes. A higher voltage rating is an acceptable substitution parameter. The 450 V rated parts (ECA-2WHG010, ECA-2WM010, UVR2W010MPD) can be used in applications designed for 400 V operation. The higher voltage rating provides additional safety margin and does not negatively impact circuit performance.

Q: What is the difference between "Active" and "Not For New Designs" product status?

A: "Active" status indicates the part is approved for use in new product designs and will receive continued manufacturer support. "Not For New Designs" status indicates the part is available for replacement and maintenance of existing products but should not be selected for new designs. For new designs, select ECA-2WHG010 or ECA-2WM010 (both Active status).

Q: Are the physical dimensions identical across all substitute parts?

A: The lead spacing (0.138" / 3.50mm) and diameter (0.315" / 8.00mm) are identical across all parts, ensuring PCB footprint compatibility. Height varies slightly: SK010M400ST, UVR2G010MPD, and UVR2W010MPD are 0.512" (13.00mm) maximum; ECA-2WHG010 and ECA-2WM010 are 0.492" (12.50mm) maximum. Both heights are acceptable for through-hole mounting applications with standard PCB clearances.

Q: Which substitute offers the best thermal performance?

A: ECA-2WHG010 (Panasonic) offers the best thermal performance with an extended operating temperature range of -25°C to 105°C and a lifetime rating of 2000 hours at 105°C, compared to the original part's 2000 hours at 85°C.

Q: Which substitute offers the highest ripple current capability?

A: ECA-2WM010 (Panasonic) provides the highest ripple current capability at 37 mA @ 120 Hz and 62.9 mA @ 10 kHz, significantly exceeding the original SK010M400ST specification of 18 mA @ 120 Hz.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (UVR2G010MPD, ECA-2WHG010, ECA-2WM010, UVR2W010MPD) are ROHS3 compliant and REACH unaffected, maintaining full regulatory compatibility with the original SK010M400ST.

Q: Can I substitute parts with different manufacturers in the same application?

A: Yes. All substitute parts maintain identical capacitance, tolerance, polarization, package type, mounting method, and lead spacing. Electrical and mechanical compatibility is ensured across all manufacturers listed (Cornell Dubilier Electronics, Nichicon, Panasonic Electronic Components).