227SAK016M Equivalent & Substitute Parts Reference

Part Overview

The 227SAK016M is a 220 µF, 16 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as Active product status and is designed for general-purpose applications requiring through-hole mounting. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 2000 hours at 85°C. Equivalent and substitute parts are identified based on matching capacitance, tolerance, and mechanical compatibility while accommodating variations in voltage rating, ESR characteristics, and thermal performance specifications.

Substiute Parts

227SAK016M

Cornell Dubilier / Illinois CapacitorIn Stock: 1112227SAK016M Datasheet

Current PartRFQ

25AX220MEFC8X9

RubyconIn Stock: 877025AX220MEFC8X9 Datasheet

UpgradeRFQ

25ML220MEFC8X9

RubyconIn Stock: 551625ML220MEFC8X9 Datasheet

UpgradeRFQ

25WA220MEFC8X9

RubyconIn Stock: 338325WA220MEFC8X9 Datasheet

UpgradeRFQ

SK221M016ST

Cornell Dubilier Electronics (CDE)In Stock: 5849SK221M016ST Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 227SAK016M are identified based on the following critical parameters that determine functional compatibility:

Primary Matching Criteria:

• Capacitance: 220 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Polarization: Polar (exact match required)
• Lead Spacing: 0.138" (3.50mm) (exact match required)
• Size / Dimension: 0.315" Dia (8.00mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)

Secondary Compatibility Parameters:

• Voltage - Rated: 16 V or higher (substitutes with higher voltage ratings are acceptable)
• Operating Temperature: -40°C minimum and 85°C maximum (substitutes with extended ranges are acceptable)
• RoHS Status: ROHS3 Compliant (compliance maintained across all substitutes)

Substitutes are categorized into two groups: Upgrade substitutes (higher voltage rating) and Similar substitutes (same voltage rating with different ESR or thermal characteristics).

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Same Voltage Rating):

The SK221M016ST from Cornell Dubilier Electronics (CDE) is a direct mechanical and electrical equivalent to the 227SAK016M. Both parts share identical capacitance (220 µF), tolerance (±20%), voltage rating (16 V), and thermal specifications (2000 Hrs @ 85°C). The SK221M016ST features a lower ESR of 970 mOhm compared to the 227SAK016M at 1.507 Ohm, which provides improved ripple current handling. Both parts maintain Active product status and ROHS3 compliance. The primary difference is the seated height: SK221M016ST measures 0.531" (13.50mm) versus 0.413" (10.50mm) for the 227SAK016M. This height difference must be verified against PCB layout constraints before selection.

For Upgraded Performance (Higher Voltage Rating):

The 25WA220MEFC8X9, 25AX220MEFC8X9, and 25ML220MEFC8X9 from Rubycon are upgrade substitutes with 25 V voltage ratings. These parts maintain identical capacitance, tolerance, lead spacing, and diameter specifications. All three upgrade substitutes are classified as Not For New Designs. Selection among these three depends on thermal and lifetime requirements:

• 25WA220MEFC8X9: Matches the 227SAK016M thermal profile (2000 Hrs @ 85°C, -40°C ~ 85°C operating range). Seated height is 0.413" (10.50mm), identical to the main part.

• 25AX220MEFC8X9: Extends operating temperature to 105°C with 2000 Hrs @ 105°C lifetime. Seated height is 0.394" (10.00mm), slightly shorter than the main part.

• 25ML220MEFC8X9: Provides extended lifetime of 5000 Hrs @ 105°C with operating temperature range of -40°C ~ 105°C. Seated height is 0.413" (10.50mm), identical to the main part.

All upgrade substitutes maintain ROHS3 compliance and are suitable for applications where higher voltage margin or extended thermal performance is required.

Frequently Asked Questions (FAQ)

Q: Can I use a 25 V rated capacitor in place of a 16 V rated capacitor?

A: Yes. A higher voltage rating provides additional safety margin and does not degrade circuit performance. The 25WA220MEFC8X9, 25AX220MEFC8X9, and 25ML220MEFC8X9 are all rated for 25 V and are electrically compatible with circuits designed for 16 V operation. Voltage derating improves reliability and extends component lifetime.

Q: What is the significance of the "Not For New Designs" product status on the Rubycon substitutes?

A: This designation indicates that Rubycon has discontinued these series for new product development. However, these parts remain available in inventory and are functionally suitable for replacement applications. For new designs, the Active-status SK221M016ST or continued use of the 227SAK016M is recommended.

Q: How do I determine which substitute is best for my application?

A: Selection depends on three factors: (1) PCB height constraints—verify the seated height against available space; (2) thermal environment—if operating above 85°C, select 25AX220MEFC8X9 or 25ML220MEFC8X9; (3) lifetime requirements—if extended reliability is needed, select 25ML220MEFC8X9 with 5000 Hrs @ 105°C rating.

Q: Are all substitutes mechanically compatible with the original PCB footprint?

A: Lead spacing (0.138" / 3.50mm) and diameter (0.315" / 8.00mm) are identical across all parts. However, seated height varies: 227SAK016M and 25WA220MEFC8X9 and 25ML220MEFC8X9 measure 0.413" (10.50mm), while 25AX220MEFC8X9 measures 0.394" (10.00mm), and SK221M016ST measures 0.531" (13.50mm). Verify clearance above the component before selection.

Q: What is the difference between ESR and impedance specifications?

A: ESR (Equivalent Series Resistance) is measured at a specific frequency (120 Hz for the 227SAK016M at 1.507 Ohm). Impedance is a broader measure of total opposition to AC current flow. The SK221M016ST specifies 970 mOhm ESR, indicating lower resistive losses and better high-frequency ripple current performance compared to the 227SAK016M.

Q: Do all substitutes maintain RoHS3 compliance?

A: Yes. All listed substitutes—227SAK016M, 25WA220MEFC8X9, 25AX220MEFC8X9, 25ML220MEFC8X9, and SK221M016ST—are ROHS3 Compliant and REACH Unaffected, ensuring regulatory compliance across all applications.