476SML050MD8 Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 476SML050MD8 is a 47 µF, 50 V aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor in the SML series. This surface mount radial can capacitor is designed for bypass and decoupling applications in electronic circuits. The part is Active in product status with 748 units currently in stock. Equivalent and substitute parts are identified to support design flexibility, inventory management, and supply chain continuity when the primary part becomes unavailable or when alternative specifications better suit application requirements.

Substiute Parts

476SML050MD8

Cornell Dubilier / Illinois CapacitorIn Stock: 768476SML050MD8 Datasheet

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MAL215371479E3

Vishay Beyschlag/Draloric/BC ComponentsIn Stock: 3497MAL215371479E3 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 476SML050MD8 is determined by strict equivalence across the following critical parameters:

Mandatory Equivalence Criteria:

• Capacitance: 47 µF (exact match required)
• Tolerance: ±20% (exact match required)
• Voltage Rating: 50 V (exact match or higher required)
• Polarization: Polar (exact match required)
• Mounting Type: Surface Mount (exact match required)
• Package / Case: Radial, Can - SMD (exact match required)
• Physical Dimension: 0.315" Dia (8.00mm) (exact match required)
• RoHS Compliance: ROHS3 Compliant (exact match required)
• MSL Rating: 1 (Unlimited) (exact match required)

Performance Parameters (Allowable Variation):

• ESR (Equivalent Series Resistance): Lower values are acceptable
• Lifetime @ Temperature: Higher values are acceptable
• Operating Temperature Range: Wider ranges are acceptable
• Ripple Current Ratings: Higher values are acceptable

The substitute part MAL215371479E3 meets all mandatory equivalence criteria and demonstrates improved performance characteristics in ESR, lifetime, and operating temperature range.

Parameter Comparison

Engineering Selection Recommendations

Primary Part: 476SML050MD8

Use the 476SML050MD8 when:

• Original design specifications explicitly require Cornell Dubilier / Illinois Capacitor SML series components
• Existing inventory stock is available and supply is not constrained
• PCB layout is finalized with the exact 0.327" x 0.327" (8.30mm x 8.30mm) land pattern
• Application operates within the specified -40°C to 85°C temperature range
• The 2000-hour lifetime at 85°C meets application requirements

Substitute Part: MAL215371479E3

Use the MAL215371479E3 when:

• The 476SML050MD8 is unavailable or supply is constrained
• Design allows for Vishay Beyschlag / Draloric / BC Components 153 CRV series substitution
• PCB layout can accommodate the 0.331" x 0.331" (8.40mm x 8.40mm) land pattern with 0.1mm tolerance margin
• Application benefits from extended operating temperature range (-55°C to 105°C)
• Application benefits from improved ESR performance (500 mOhm @ 100 kHz vs. 4.23 Ohm @ 120 Hz)
• Application benefits from extended lifetime (3000 hours @ 105°C vs. 2000 hours @ 85°C)
• Application benefits from higher ripple current capability (270 mA @ 100 kHz vs. 210 mA @ 100 kHz)

Both parts are ROHS3 compliant, REACH unaffected, and carry MSL rating 1 (Unlimited). Both are Active products with current manufacturing status. The substitute part is available in Tape & Reel (TR) packaging with 3479 units in stock, compared to 748 units of the primary part.

Frequently Asked Questions (FAQ)

Q: Can MAL215371479E3 be used as a direct replacement for 476SML050MD8 on existing PCBs?

A: The MAL215371479E3 is electrically equivalent and functionally compatible. However, the surface mount land size differs by 0.1mm (8.40mm vs. 8.30mm). PCB layouts designed for the 476SML050MD8 with 8.30mm land patterns can accommodate the MAL215371479E3 if the PCB design includes standard manufacturing tolerances. Verify land pattern clearance with your PCB layout tool before assembly.

Q: What are the key performance differences between these two parts?

A: The MAL215371479E3 offers three performance advantages: (1) significantly lower ESR at 500 mOhm @ 100 kHz compared to 4.23 Ohm @ 120 Hz, (2) extended operating temperature range from -55°C to 105°C versus -40°C to 85°C, and (3) higher ripple current ratings at both low and high frequencies. These improvements make the substitute suitable for more demanding thermal and electrical environments.

Q: Are both parts suitable for bypass and decoupling applications?

A: The 476SML050MD8 is specified for bypass and decoupling applications. The MAL215371479E3 is specified for general purpose applications. Both parts meet the electrical requirements for bypass and decoupling functions based on their capacitance, voltage rating, and ripple current specifications. The substitute's lower ESR and higher ripple current capability make it equally or more suitable for these applications.

Q: What is the significance of the height difference (11.00mm vs. 10.50mm)?

A: The MAL215371479E3 is 0.5mm shorter in seated height. This difference is negligible for most PCB designs and may be advantageous in space-constrained applications. Verify clearance with surrounding components and conformal coating requirements if applicable.

Q: Do both parts have the same moisture sensitivity level?

A: Yes, both parts carry MSL rating 1 (Unlimited), indicating no moisture sensitivity restrictions. Both parts can be stored and handled without special moisture control measures.

Q: What packaging formats are available for each part?

A: The 476SML050MD8 is available in standard packaging. The MAL215371479E3 is available in Tape & Reel (TR) format, which is standard for high-volume surface mount assembly operations.

Q: Are both parts RoHS compliant?

A: Yes, both parts are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements for electronic component manufacturing and use.