SK220M100ST Equivalent & Substitute Parts Reference

Part Overview

The SK220M100ST is a 22 µF, 100 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 through-hole mounting. The SK series capacitor 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 when they satisfy the core electrical and mechanical parameters: capacitance value, voltage rating, tolerance, physical dimensions, lead spacing, and mounting configuration.

Substiute Parts

SK220M100ST

Cornell Dubilier Electronics (CDE)In Stock: 1083SK220M100ST Datasheet

Current PartRFQ

226CKR100M

Cornell Dubilier / Illinois CapacitorIn Stock: 72385226CKR100M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SK220M100ST are identified based on strict equivalence of the following parameters:

• Capacitance Value: 22 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Physical Dimensions: 0.315" diameter (8.00 mm) and 0.512" height (13.00 mm) (exact match required)
• Lead Spacing: 0.138" (3.50 mm) (exact match required)
• Mounting Configuration: Through Hole, Radial, Can package (exact match required)
• Operating Temperature Range: -40°C to 85°C (exact match required)
• Lifetime Rating: 2000 Hrs @ 85°C (exact match required)

The 226CKR100M qualifies as a parametric equivalent because it matches all core electrical and mechanical parameters. Variations in ESR (Equivalent Series Resistance) and ripple current specifications do not disqualify substitution when the primary functional parameters are identical.

Parameter Comparison

Engineering Selection Recommendations

The 226CKR100M is a direct parametric equivalent to the SK220M100ST for applications requiring a 22 µF, 100 V aluminum electrolytic capacitor in radial, can configuration. Both components are Active product status and comply with ROHS3, REACH, and EAR99 classifications. Both maintain identical operating temperature ranges (-40°C to 85°C) and lifetime ratings (2000 Hrs @ 85°C).

Selection between SK220M100ST and 226CKR100M is determined by:

• Availability: SK220M100ST inventory is 1040 pieces; 226CKR100M inventory is 72331 pieces
• ESR Specification: SK220M100ST specifies 4.83 Ohm; 226CKR100M specifies 6.0286 Ohm @ 120Hz. Applications sensitive to ESR performance should reference detailed circuit requirements
• Manufacturer Preference: Both are Cornell Dubilier products; 226CKR100M is also available through Illinois Capacitor

Both parts satisfy identical electrical and mechanical requirements for general-purpose applications and are suitable for direct substitution in through-hole PCB designs.

Frequently Asked Questions (FAQ)

Q: Can the 226CKR100M replace the SK220M100ST in my circuit?

A: Yes. Both components share identical capacitance (22 µF), voltage rating (100 V), tolerance (±20%), physical dimensions (0.315" diameter, 0.512" height), lead spacing (0.138"), mounting type (through-hole), and operating temperature range (-40°C to 85°C). They are parametric equivalents suitable for direct substitution.

Q: What is the difference in ESR between these two parts?

A: The SK220M100ST specifies 4.83 Ohm ESR, while the 226CKR100M specifies 6.0286 Ohm @ 120Hz. The difference is approximately 1.2 Ohm. For applications where ESR performance is critical, circuit simulation or testing may be necessary to confirm acceptable performance with the higher ESR value.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both SK220M100ST and 226CKR100M are ROHS3 Compliant and REACH Unaffected. Both carry EAR99 export classification and HTSUS code 8532.22.0020.

Q: Do these capacitors have the same physical footprint?

A: Yes. Both components have identical dimensions: 0.315" diameter (8.00 mm), 0.512" maximum seated height (13.00 mm), and 0.138" lead spacing (3.50 mm). They are compatible with the same through-hole PCB layouts.

Q: What is the lifetime rating for both parts?

A: Both SK220M100ST and 226CKR100M are rated for 2000 hours at 85°C operating temperature.

Q: Which part should I select based on availability?

A: The 226CKR100M has significantly higher inventory (72331 pieces) compared to SK220M100ST (1040 pieces). For applications requiring immediate availability or high-volume procurement, 226CKR100M is the preferred choice.