SN100M050ST Equivalent & Substitute Parts

Part Overview

The SN100M050ST is a 10 µF, 50 V aluminum electrolytic capacitor in radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component is classified as obsolete, necessitating identification of equivalent and substitute parts for ongoing production support and design continuity. The part operates across a temperature range of -40°C to 85°C with a rated lifetime of 1000 hours at 85°C, making it suitable for general-purpose applications requiring stable capacitance and low equivalent series resistance.

Substiute Parts

SN100M050ST

Cornell Dubilier Electronics (CDE)In Stock: 979SN100M050ST Datasheet

Current PartRFQ

UES1H100MPM1TA

NichiconIn Stock: 1893UES1H100MPM1TA Datasheet

DirectRFQ

UVP2A100MPD1TD

NichiconIn Stock: 8549UVP2A100MPD1TD Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the SN100M050ST is determined by strict equivalence across the following critical parameters:

Direct Equivalence Criteria:

• Capacitance value: 10 µF (exact match required)
• Voltage rating: 50 V minimum (equal or higher acceptable)
• Tolerance: ±20% (matching specification)
• Lead spacing: 0.138" (3.50 mm) (exact match for PCB compatibility)
• Case diameter: 0.315" (8.00 mm) (exact match for mechanical fit)
• Mounting type: Through Hole (exact match)
• Package type: Radial, Can (exact match)
• Operating temperature range: -40°C to 85°C minimum (equal or wider acceptable)
• RoHS compliance: ROHS3 Compliant (required for regulatory alignment)

Substitute parts are classified into two categories:

Direct Manufacturer Substitutes: Parts meeting all critical parameters with identical voltage rating (50 V) and equivalent or superior lifetime ratings.

Similar Manufacturer Substitutes: Parts meeting all critical parameters with higher voltage rating (100 V) and extended lifetime, suitable for applications where overvoltage margin is beneficial.

Parameter Comparison

Engineering Selection Recommendations

UES1H100MPM1TA (Nichicon) is the direct functional equivalent to the SN100M050ST. This part maintains identical electrical specifications including 10 µF capacitance, 50 V voltage rating, ±20% tolerance, and 1000-hour lifetime at 85°C. The lead spacing, case diameter, and through-hole mounting are mechanically identical, ensuring direct PCB compatibility without layout modifications. Both parts are ROHS3 compliant. The UES1H100MPM1TA is classified as "Not For New Designs," indicating it is suitable for legacy system support and replacement applications only.

UVP2A100MPD1TD (Nichicon) serves as an enhanced substitute with superior performance characteristics. While maintaining the same 10 µF capacitance, ±20% tolerance, and identical mechanical dimensions, this part provides a 100 V voltage rating (double the original specification) and extended 2000-hour lifetime at 85°C. The higher voltage rating provides additional design margin for circuits subject to transient overvoltage conditions. The increased height (0.512" versus 0.453") requires verification of available PCB clearance in the vertical direction. This part is ROHS3 compliant and REACH affected. Selection of this substitute is appropriate when enhanced reliability and overvoltage protection are design requirements.

Both substitute parts are available in higher inventory quantities than the obsolete SN100M050ST, supporting production continuity and supply chain stability.

Frequently Asked Questions (FAQ)

Q: Can the UES1H100MPM1TA be used as a direct replacement for the SN100M050ST without PCB modifications?

A: Yes. The UES1H100MPM1TA maintains identical lead spacing (0.138" / 3.50 mm), case diameter (0.315" / 8.00 mm), and through-hole mounting configuration. No PCB layout changes are required for electrical or mechanical compatibility.

Q: What is the primary difference between the two Nichicon substitutes?

A: The UES1H100MPM1TA matches the original 50 V voltage rating with equivalent 1000-hour lifetime. The UVP2A100MPD1TD provides a 100 V voltage rating and extended 2000-hour lifetime at 85°C, with a slightly increased height of 0.512" compared to 0.453" for the original part.

Q: Is the increased height of the UVP2A100MPD1TD a concern for PCB assembly?

A: The height difference of 0.059" (1.50 mm) must be evaluated against available vertical clearance in the target application. If the PCB layout includes components or enclosure constraints in the vertical direction above this capacitor location, clearance verification is necessary before selection.

Q: Are both substitute parts suitable for new product designs?

A: Both substitute parts carry "Not For New Designs" status, indicating they are intended for legacy system support, production continuity, and replacement applications. For new product development, consultation with component suppliers for current-generation alternatives is recommended.

Q: Do the substitute parts maintain RoHS3 compliance?

A: Yes. Both the UES1H100MPM1TA and UVP2A100MPD1TD are ROHS3 compliant, matching the regulatory status of the original SN100M050ST.

Q: What is the significance of the UVP2A100MPD1TD being REACH affected?

A: REACH affected status indicates the part contains substances of concern regulated under the REACH directive. This classification requires compliance documentation and may impose supply chain restrictions in certain jurisdictions. The original SN100M050ST and the UES1H100MPM1TA do not carry this designation.

Q: Can the 100 V rated UVP2A100MPD1TD be used in circuits designed for 50 V operation?

A: Yes. A higher voltage rating provides additional safety margin and does not degrade performance in lower-voltage applications. The capacitance, tolerance, and temperature characteristics remain functionally equivalent.