SEK100M200ST Equivalent & Substitute Parts

Part Overview

The SEK100M200ST is a 10 µF, 200 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in radial, through-hole configuration. This component is classified as Active product status with full availability (947 pcs in stock). The part is designed for general-purpose applications requiring stable capacitance performance across industrial temperature ranges.

Substitute parts become necessary when the primary manufacturer discontinues production, inventory becomes depleted, or design requirements necessitate alternative sourcing. The UPS2D100MPD from Nichicon represents a functionally equivalent alternative, though it carries Obsolete product status and differs in specific mechanical and electrical characteristics.

Substiute Parts

SEK100M200ST

Cornell Dubilier Electronics (CDE)In Stock: 1009SEK100M200ST Datasheet

Current PartRFQ

UPS2D100MPD

NichiconIn Stock: 2891UPS2D100MPD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SEK100M200ST is determined by strict equivalence across the following parameters:

Electrical Parameters (Non-Negotiable):

• Capacitance: 10 µF (exact match required)
• Voltage Rating: 200 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C to 105°C (substitute must support this range)
• Lifetime: 2000 Hrs @ 105°C (substitute must meet or exceed this specification)

Mechanical Parameters (Non-Negotiable):

• Mounting Type: Through Hole (exact match required for PCB assembly)
• Lead Spacing: 0.197" (5.00mm) (exact match required for footprint compatibility)
• Package Type: Radial, Can (exact match required for mechanical fit)

Compliance Parameters (Required):

• RoHS Status: ROHS3 Compliant (regulatory requirement)
• REACH Status: REACH Unaffected (regulatory requirement)

The UPS2D100MPD from Nichicon satisfies all critical electrical and mechanical parameters. However, it exhibits a taller seated height (0.630" vs. 0.512"), which may affect clearance in space-constrained applications. The substitute part carries Obsolete product status, indicating discontinued manufacturing.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SEK100M200ST (CDE)

The SEK100M200ST is the recommended choice for new designs and ongoing production. This part carries Active product status, ensuring continued availability and manufacturer support. It is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements. With 947 units in current inventory, supply continuity is assured for near-term requirements.

Alternative Selection: UPS2D100MPD (Nichicon)

The UPS2D100MPD is electrically and mechanically equivalent and may be used as a substitute when SEK100M200ST availability is constrained. However, the following conditions apply:

• Product Status: Obsolete. This part is no longer manufactured by Nichicon. Use only when existing inventory is available and long-term supply is not required.
• Mechanical Difference: The seated height is 0.630" (16.00mm) compared to 0.512" (13.00mm) for the primary part. Verify clearance in the target PCB assembly before substitution.
• Compliance: ROHS3 compliant and REACH unaffected. Regulatory requirements are satisfied.
• Inventory: 2793 units currently available, providing short-term sourcing flexibility.

Substitution Constraints:

Do not substitute if the application requires:

• Exact height matching for space-constrained enclosures
• Long-term supply assurance beyond current inventory depletion
• Specific ESR performance characteristics (ESR data for UPS2D100MPD is not provided)

Frequently Asked Questions (FAQ)

Q: Can the UPS2D100MPD be used as a direct replacement for the SEK100M200ST?

A: The UPS2D100MPD is electrically equivalent (10 µF, 200 V, ±20%, 2000 Hrs @ 105°C) and mechanically compatible in terms of lead spacing (5.00mm) and package type (radial, through-hole). However, the seated height differs by 3.00mm (0.630" vs. 0.512"). Verify PCB clearance before substitution.

Q: What is the significance of the Obsolete product status for the UPS2D100MPD?

A: Obsolete status indicates that Nichicon has discontinued manufacturing this part. Substitution is limited to available inventory only. Once current stock is depleted, no additional units will be produced. For applications requiring long-term supply, the Active-status SEK100M200ST is the appropriate choice.

Q: Are both parts RoHS and REACH compliant?

A: Yes. Both the SEK100M200ST and UPS2D100MPD are ROHS3 compliant and REACH unaffected, satisfying current regulatory requirements for electronic components.

Q: Does the height difference affect PCB assembly?

A: The UPS2D100MPD is 3.00mm taller than the SEK100M200ST. In applications with tight vertical clearance (such as low-profile enclosures or densely populated boards), this difference may cause mechanical interference. Verify clearance in the target assembly before substitution.

Q: Why is ESR data missing for the UPS2D100MPD?

A: ESR (Equivalent Series Resistance) is not specified in the available technical documentation for the UPS2D100MPD. If ESR performance is critical to the application, contact the component supplier or refer to the original Nichicon datasheet. The SEK100M200ST specifies 19.9 Ohm ESR.

Q: Can I use either part interchangeably in production?

A: No. The SEK100M200ST is the primary production choice due to Active status and assured supply. The UPS2D100MPD may be used only as a temporary substitute when SEK100M200ST is unavailable, provided mechanical clearance is verified and long-term supply is not required.

Q: What parameters must match exactly for substitution?

A: Capacitance (10 µF), voltage rating (200 V), tolerance (±20%), operating temperature range (-40°C to 105°C), lifetime (2000 Hrs @ 105°C), lead spacing (5.00mm), and package type (radial, through-hole) must all match exactly. Mechanical height may differ if clearance permits.