SEK100M100ST Equivalent & Substitute Parts

Part Overview

The SEK100M100ST is a 10 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 part is currently in stock with 1199 units available.

Substitute parts become necessary when the primary manufacturer experiences supply constraints, discontinuation, or when design requirements allow for alternative qualified components that meet identical electrical and mechanical specifications. The SEK100M100ST has one documented parametric equivalent: the UPW2A100MED from Nichicon, which shares critical electrical characteristics and physical dimensions.

Substiute Parts

SEK100M100ST

Cornell Dubilier Electronics (CDE)In Stock: 1298SEK100M100ST Datasheet

Current PartRFQ

UPW2A100MED

NichiconIn Stock: 5280UPW2A100MED Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SEK100M100ST is determined by strict equivalence across the following critical parameters:

Electrical Parameters:

• Capacitance: 10 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -55°C ~ 105°C (exact match required)
• Lifetime: 2000 Hrs @ 105°C (exact match required)

Mechanical Parameters:

• Package Type: Radial, Can (exact match required)
• Mounting Type: Through Hole (exact match required)
• Lead Spacing: 0.098" (2.50 mm) (exact match required)
• Physical Dimensions: 0.248" Dia × 0.433" Height (exact match required)

Compliance Parameters:

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

The UPW2A100MED from Nichicon meets all substitution criteria across electrical, mechanical, and compliance parameters. This part is classified as Obsolete product status, which indicates limited future availability but current stock of 5200 units.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: SEK100M100ST (Cornell Dubilier Electronics)

The SEK100M100ST is the recommended primary choice for new designs and procurement. This part carries Active product status, indicating ongoing manufacturer support and long-term availability. Current inventory of 1199 units supports immediate deployment. The component is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronics manufacturing.

Alternative Selection: UPW2A100MED (Nichicon)

The UPW2A100MED is a qualified parametric equivalent suitable for direct substitution in existing designs or when SEK100M100ST availability is constrained. This part meets all electrical, mechanical, and compliance specifications. However, the Obsolete product status indicates that future availability may be limited. Current inventory of 5200 units provides near-term supply. The UPW2A100MED is ROHS3 compliant and REACH unaffected.

Selection Criteria:

• For new designs with long-term production requirements: Select SEK100M100ST (Active status)
• For existing designs requiring immediate substitution: Select UPW2A100MED (Obsolete status, higher current inventory)
• For applications with extended lifecycle requirements: Prioritize SEK100M100ST due to Active product status

Both parts are suitable for general-purpose applications and share identical electrical performance characteristics, thermal ratings, and physical form factors.

Frequently Asked Questions (FAQ)

Q: Can the UPW2A100MED be used as a direct replacement for the SEK100M100ST in existing PCB assemblies?

A: Yes. The UPW2A100MED is a parametric equivalent with identical capacitance (10 µF), voltage rating (100 V), tolerance (±20%), operating temperature range (-55°C ~ 105°C), and physical dimensions (0.248" Dia × 0.433" Height). Lead spacing (0.098" / 2.50 mm) and through-hole mounting type are identical. No PCB layout modifications are required.

Q: What is the difference between Active and Obsolete product status?

A: Active product status indicates the manufacturer continues production and provides ongoing technical support. Obsolete product status indicates the manufacturer has discontinued production, though existing inventory may remain available. For long-term supply chain planning, Active status parts are preferred.

Q: Are both parts compliant with current environmental regulations?

A: Yes. Both the SEK100M100ST and UPW2A100MED are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronics manufacturing and distribution.

Q: What parameters must match exactly for substitution eligibility?

A: Capacitance, voltage rating, tolerance, operating temperature range, lifetime rating, lead spacing, physical dimensions, package type, and mounting type must all match exactly. Both parts meet these criteria.

Q: Which part should be selected for new product designs?

A: The SEK100M100ST is recommended for new designs due to Active product status, ensuring long-term manufacturer support and availability.

Q: Can these parts be used interchangeably in mid-production design changes?

A: Yes. The parametric equivalence and identical physical form factor allow direct substitution without PCB redesign or assembly process modifications.