SEK2R2M200ST Equivalent & Substitute Parts

Part Overview

The SEK2R2M200ST is a 2.2 µF, 200 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 stable capacitance and extended operational life at elevated temperatures. The part operates across a temperature range of -40°C to 105°C with a rated lifetime of 2000 hours at 105°C.

Substitute parts become necessary when the original SEK2R2M200ST is unavailable due to inventory constraints, supply chain disruptions, or when design flexibility permits selection from qualified alternatives that meet identical electrical and mechanical specifications.

Substiute Parts

SEK2R2M200ST

Cornell Dubilier Electronics (CDE)In Stock: 1054SEK2R2M200ST Datasheet

Current PartRFQ

UPW2D2R2MED

NichiconIn Stock: 4295UPW2D2R2MED Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SEK2R2M200ST is permitted only when the replacement component satisfies all critical electrical and mechanical parameters. The substitution logic is based strictly on the following criteria:

Electrical Parameters (Must Match Exactly):

• Capacitance: 2.2 µF
• Rated Voltage: 200 V
• Tolerance: ±20%
• Polarization: Polar
• Operating Temperature Range: -40°C to 105°C
• Lifetime: 2000 Hrs @ 105°C

Mechanical Parameters (Must Match Exactly):

• Mounting Type: Through Hole
• Package Type: Radial, Can
• Lead Spacing: 0.098" (2.50mm)
• Diameter: 0.248" (6.30mm)

Compliance Parameters (Must Match):

• RoHS Status: ROHS3 Compliant
• REACH Status: REACH Unaffected

The substitute part UPW2D2R2MED meets all critical electrical and mechanical parameters. Minor dimensional variation in seated height (0.433" vs. 0.453") is within acceptable tolerance for through-hole radial can packages and does not affect circuit board layout compatibility.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SEK2R2M200ST (CDE)

The SEK2R2M200ST maintains Active product status with confirmed inventory availability (1015 pcs in stock). This part is the preferred choice for new designs and applications requiring long-term supply continuity. Full compliance with ROHS3 and REACH regulations is confirmed.

Substitute Selection: UPW2D2R2MED (Nichicon)

The UPW2D2R2MED is electrically and mechanically equivalent to the SEK2R2M200ST and satisfies all critical substitution parameters. However, this part carries Obsolete product status, indicating discontinued manufacturing and limited future availability (current inventory: 4189 pcs). The UPW2D2R2MED is suitable for replacement applications, repair operations, and legacy system maintenance where supply of the original part is constrained.

Compliance Considerations:

Both parts maintain ROHS3 compliance and REACH unaffected status, permitting use in regulated markets without additional environmental or hazardous substance documentation.

Dimensional Compatibility:

The seated height difference of 0.020" (0.50mm) between the two parts is within acceptable tolerance for through-hole radial can packages and does not require circuit board layout modification.

Frequently Asked Questions (FAQ)

Q: Can UPW2D2R2MED be used as a direct replacement for SEK2R2M200ST in existing designs?

A: Yes. The UPW2D2R2MED meets all critical electrical and mechanical parameters specified for the SEK2R2M200ST, including capacitance, voltage rating, tolerance, temperature range, lifetime, lead spacing, and package dimensions. Direct substitution is permissible without circuit modification.

Q: What is the significance of the Obsolete product status for UPW2D2R2MED?

A: Obsolete status indicates that Nichicon has discontinued manufacturing of this part. While current inventory exists, future availability cannot be guaranteed. The UPW2D2R2MED is suitable for immediate replacement needs but should not be selected for new designs requiring long-term supply assurance.

Q: Are there dimensional differences that affect PCB layout?

A: The seated height differs by 0.020" (0.50mm), with UPW2D2R2MED measuring 0.433" versus SEK2R2M200ST at 0.453". This variation is within standard tolerance for radial can packages and does not require PCB layout changes. All other critical dimensions, including lead spacing and diameter, are identical.

Q: Do both parts meet environmental compliance requirements?

A: Yes. Both SEK2R2M200ST and UPW2D2R2MED are ROHS3 compliant and REACH unaffected, satisfying environmental regulations for use in regulated markets.

Q: What electrical parameters must remain constant during substitution?

A: Capacitance (2.2 µF), rated voltage (200 V), tolerance (±20%), polarization (polar), operating temperature range (-40°C to 105°C), and lifetime (2000 Hrs @ 105°C) must remain constant. Ripple current ratings at both 120 Hz and 10 kHz must also match.

Q: Can ESR (Equivalent Series Resistance) differences affect circuit performance?

A: The SEK2R2M200ST specifies ESR at 90.47 Ohm @ 120 Hz. The UPW2D2R2MED does not provide ESR specification in available documentation. For applications where ESR is a critical design parameter, the SEK2R2M200ST is the preferred selection.