SK103M016ST Equivalent & Substitute Parts

Part Overview

The SK103M016ST is a 10000 µF, 16 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in radial, can package configuration. This component is classified as Active and is suitable for general-purpose applications requiring stable capacitance and extended operational life at elevated temperatures. The part is specified for 2000 hours of operation at 85°C with a rated ESR of 50 mOhm at 120 Hz.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component selection based on specific application requirements and performance parameters.

Substiute Parts

SK103M016ST

Cornell Dubilier Electronics (CDE)In Stock: 909SK103M016ST Datasheet

Current PartRFQ

109CKS016M

Cornell Dubilier / Illinois CapacitorIn Stock: 1091109CKS016M Datasheet

DirectRFQ

UVR1C103MHD

NichiconIn Stock: 1902UVR1C103MHD Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the SK103M016ST are qualified based on the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Capacitance: 10000 µF (exact match required)
• Voltage Rating: 16 V (exact match required)
• Tolerance: ±20% (exact match required)
• Operating Temperature Range: -40°C ~ 85°C (exact match required)
• Lifetime: 2000 Hrs @ 85°C (exact match required)
• Lead Spacing: 7.50 mm (exact match required)
• Diameter: 18.00 mm (exact match required)
• Mounting Type: Through Hole (exact match required)
• Package / Case: Radial, Can (exact match required)
• Polarization: Polar (exact match required)

Secondary Compatibility Parameters:

• ESR @ 120 Hz: Acceptable within engineering tolerance
• Ripple Current Ratings: Acceptable within application requirements
• Height - Seated: Acceptable within PCB layout constraints
• RoHS and REACH Compliance: Required for regulatory conformance

All substitute parts listed meet the primary substitution criteria and maintain electrical and mechanical compatibility with the SK103M016ST.

Parameter Comparison

Engineering Selection Recommendations

SK103M016ST (Primary Component)

The SK103M016ST remains the primary selection for new designs. This part is Active status, manufactured by Cornell Dubilier Electronics, and carries full ROHS3 compliance and REACH Unaffected designation. The specified ESR of 50 mOhm at 120 Hz provides baseline performance for general-purpose applications.

109CKS016M (Preferred Substitute)

The 109CKS016M is qualified as a direct substitute for the SK103M016ST. Manufactured by Cornell Dubilier / Illinois Capacitor, this part maintains Active product status and identical electrical specifications except for ESR, which is 56 mOhm at 120 Hz. The higher ESR remains within acceptable engineering tolerance for general-purpose applications. The 109CKS016M features improved ripple current ratings (3.23 A @ 120 Hz and 4.522 A @ 100 kHz) and a reduced height of 36.50 mm, which may provide PCB layout advantages. Full ROHS3 compliance and REACH Unaffected status are maintained.

UVR1C103MHD (Legacy Substitute)

The UVR1C103MHD, manufactured by Nichicon, is qualified as a substitute but carries "Not For New Designs" product status. This part meets all primary substitution criteria and maintains ROHS3 compliance and REACH Unaffected designation. The ESR specification is not provided in available documentation. The UVR1C103MHD features a reduced height of 35.50 mm and ripple current ratings of 2.95 A @ 120 Hz and 3.3925 A @ 10 kHz. This part is suitable for legacy system support and field replacement applications only.

Frequently Asked Questions (FAQ)

Q: Can the 109CKS016M be used as a direct replacement for the SK103M016ST?

A: Yes. The 109CKS016M meets all primary substitution criteria including capacitance, voltage rating, tolerance, operating temperature range, lifetime rating, lead spacing, diameter, and mounting type. The ESR difference of 6 mOhm (56 mOhm versus 50 mOhm) is within acceptable engineering tolerance for general-purpose applications.

Q: What is the significance of the height difference between these parts?

A: The SK103M016ST has a maximum seated height of 44.00 mm, while the 109CKS016M measures 36.50 mm and the UVR1C103MHD measures 35.50 mm. These dimensional differences must be evaluated against PCB layout constraints and available vertical clearance. All three parts maintain identical lead spacing and diameter, ensuring footprint compatibility on the PCB.

Q: Why is the UVR1C103MHD marked "Not For New Designs"?

A: The UVR1C103MHD carries a "Not For New Designs" product status designation from Nichicon. This part is suitable for legacy system support and field replacement applications where the original component is no longer in production. New designs should prioritize the SK103M016ST or 109CKS016M, both of which carry Active product status.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. The SK103M016ST, 109CKS016M, and UVR1C103MHD are all ROHS3 Compliant and REACH Unaffected, meeting current regulatory requirements for electronic component manufacturing and distribution.

Q: What is the impact of ESR differences on circuit performance?

A: ESR (Equivalent Series Resistance) affects ripple current handling and thermal performance. The SK103M016ST specifies 50 mOhm at 120 Hz, while the 109CKS016M specifies 56 mOhm at 120 Hz. The 6 mOhm difference is negligible for general-purpose applications. The UVR1C103MHD does not provide ESR specification in available documentation. Applications requiring precise ESR control should reference detailed circuit analysis and thermal modeling.

Q: Can these parts be used interchangeably in existing assemblies?

A: The SK103M016ST, 109CKS016M, and UVR1C103MHD are mechanically and electrically compatible for through-hole mounting applications with identical lead spacing and diameter. Height differences must be verified against available PCB clearance. All parts maintain identical capacitance, voltage rating, tolerance, and operating temperature specifications.

Q: What inventory considerations apply to these parts?

A: The SK103M016ST has 881 pieces in stock, the 109CKS016M has 1069 pieces in stock, and the UVR1C103MHD has 1892 pieces in stock. Inventory availability should be evaluated based on project timeline and supply chain requirements.