SK2R2M250ST Equivalent & Substitute Parts

Part Overview

The SK2R2M250ST is a 2.2 µF 250 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in radial, can package configuration. This component is designed for general-purpose applications requiring stable capacitance performance across extended operating temperatures. The part maintains Active product status with 841 units currently in stock. Equivalent and substitute parts are identified to provide procurement flexibility, ensure supply chain continuity, and support design requirements when the primary part becomes unavailable.

Substiute Parts

SK2R2M250ST

Cornell Dubilier Electronics (CDE)In Stock: 929SK2R2M250ST Datasheet

Current PartRFQ

ECA-2EM2R2

Panasonic Electronic ComponentsIn Stock: 8804ECA-2EM2R2 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SK2R2M250ST is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 2.2 µF (exact match required)
• Voltage Rating: 250 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 2000 Hrs @ 85°C (exact match required)
• Operating Temperature Range: -25°C ~ 85°C (exact match required)

Mechanical Parameters:

• Lead Spacing: 0.098" (2.50 mm) (exact match required)
• Size / Dimension: 0.248" Dia (6.30 mm) (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)

Compliance Parameters:

• RoHS Status: ROHS3 Compliant (exact match required)
• REACH Status: REACH Unaffected (exact match required)

The substitute part ECA-2EM2R2 meets all critical electrical, mechanical, and compliance requirements for direct substitution.

Parameter Comparison

Engineering Selection Recommendations

The ECA-2EM2R2 manufactured by Panasonic Electronic Components qualifies as a direct substitute for the SK2R2M250ST. Both components maintain Active product status and satisfy identical electrical specifications, mechanical dimensions, and regulatory compliance requirements.

The substitute part demonstrates equivalent performance across all critical parameters: capacitance, voltage rating, tolerance, thermal lifetime, and operating temperature range. Mechanical compatibility is confirmed through matching lead spacing, case diameter, and through-hole mounting configuration. The height differential (0.512" versus 0.480") falls within acceptable PCB layout tolerances for radial can capacitors.

Both parts carry ROHS3 compliance and REACH Unaffected status, ensuring regulatory alignment for industrial and commercial applications. The ECA-2EM2R2 is available in higher inventory quantity (8709 units), supporting extended procurement windows and supply chain resilience.

Frequently Asked Questions (FAQ)

Q: Can the ECA-2EM2R2 be used as a direct replacement for the SK2R2M250ST on existing PCBs?

A: Yes. The ECA-2EM2R2 matches all critical electrical and mechanical parameters. Lead spacing (0.098"), case diameter (0.248"), and through-hole mounting configuration are identical. The height difference (0.480" versus 0.512") does not affect PCB compatibility for standard radial capacitor layouts.

Q: Are there differences in ESR (Equivalent Series Resistance) between these parts?

A: The SK2R2M250ST specifies 90.47 Ohm ESR. The ECA-2EM2R2 does not provide ESR specification in the available data. Both parts meet the 2000 Hrs @ 85°C lifetime requirement, indicating equivalent thermal performance characteristics.

Q: Do both parts have the same RoHS and REACH compliance status?

A: Yes. Both the SK2R2M250ST and ECA-2EM2R2 are ROHS3 Compliant and REACH Unaffected. Both carry EAR99 export classification and 8532.22.0020 HTSUS code.

Q: What is the difference in Moisture Sensitivity Level (MSL) between these parts?

A: The SK2R2M250ST carries MSL 1 (Unlimited). The ECA-2EM2R2 lists MSL as Not Applicable. Both designations indicate minimal moisture sensitivity for through-hole radial can capacitors, with no special storage or handling requirements.

Q: Can these parts be used interchangeably in high-ripple-current applications?

A: The ECA-2EM2R2 specifies ripple current ratings: 50 mA @ 120 Hz and 85 mA @ 10 kHz. The SK2R2M250ST does not provide ripple current specifications. For applications requiring specific ripple current performance, verify the ECA-2EM2R2 ratings against circuit requirements.

Q: Are there inventory considerations for selecting between these parts?

A: The SK2R2M250ST has 841 units in stock. The ECA-2EM2R2 has 8709 units in stock. For high-volume production or extended lead-time mitigation, the ECA-2EM2R2 offers greater availability.