477SMH016M Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 477SMH016M is an active, surface-mount aluminum electrolytic capacitor manufactured by Cornell Dubilier / Illinois Capacitor. This component is rated at 470 µF capacitance with 16 V voltage rating and ±20% tolerance. The part is designed for bypass and decoupling applications in electronic circuits. The SMH series offers a compact radial can package suitable for high-density PCB layouts. Substitute parts are identified when equivalent electrical and mechanical parameters are required due to inventory constraints, design optimization, or application-specific performance needs.

Substiute Parts

477SMH016M

Cornell Dubilier / Illinois CapacitorIn Stock: 955477SMH016M Datasheet

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477AXZ016M

Cornell Dubilier / Illinois CapacitorIn Stock: 9028477AXZ016M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 477SMH016M with the 477AXZ016M is based on strict electrical and mechanical parameter equivalence. Both parts share identical core specifications: 470 µF capacitance, 16 V rated voltage, ±20% tolerance, and surface-mount radial can package with 8.00 mm diameter. Both operate across the -55°C to 105°C temperature range and comply with ROHS3 and REACH requirements.

The substitution is valid based on the following matching parameters:

• Capacitance: 470 µF (identical)
• Voltage Rating: 16 V (identical)
• Tolerance: ±20% (identical)
• Package: Radial, Can - SMD (identical)
• Case Diameter: 8.00 mm (identical)
• Surface Mount Land Size: 8.30 mm × 8.30 mm (identical)
• Operating Temperature: -55°C to 105°C (identical)
• Polarization: Polar (identical)
• RoHS/REACH Compliance: Identical

The 477AXZ016M represents an upgrade path with extended lifetime (2000 Hrs @ 105°C versus 1000 Hrs) and higher ripple current capability at 100 kHz (600 mA versus 510 mA), while maintaining mechanical compatibility and electrical equivalence for the primary application parameters.

Parameter Comparison

Engineering Selection Recommendations

Both the 477SMH016M and 477AXZ016M are active products with full ROHS3 compliance and REACH unaffected status, making them suitable for current production and regulatory requirements. The parts are electrically equivalent for primary application parameters: capacitance, voltage rating, tolerance, and operating temperature range.

The 477AXZ016M offers extended operational lifetime at elevated temperature (2000 Hrs @ 105°C versus 1000 Hrs), providing enhanced reliability margin for long-term deployment. The 477AXZ016M also delivers superior high-frequency ripple current handling (600 mA @ 100 kHz versus 510 mA), beneficial in switching power supply and high-frequency decoupling applications.

The 477SMH016M maintains lower profile height (11.00 mm versus 10.60 mm is marginal), though both fit identical PCB land patterns. Selection between these parts should be based on application lifetime requirements and ripple current specifications rather than mechanical constraints, as both are mechanically compatible within the same PCB footprint.

Frequently Asked Questions (FAQ)

Q: Can the 477AXZ016M directly replace the 477SMH016M in existing designs?

A: Yes. Both parts share identical capacitance (470 µF), voltage rating (16 V), tolerance (±20%), case diameter (8.00 mm), and surface mount land size (8.30 mm × 8.30 mm). The PCB footprint and electrical interface are fully compatible. The 477AXZ016M is a direct mechanical and electrical substitute.

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

A: The primary differences are: (1) Lifetime at 105°C: 477AXZ016M provides 2000 Hrs versus 477SMH016M at 1000 Hrs; (2) High-frequency ripple current: 477AXZ016M handles 600 mA @ 100 kHz versus 477SMH016M at 510 mA; (3) Height: 477AXZ016M is 10.60 mm versus 477SMH016M at 11.00 mm. ESR values are equivalent (705.5 mOhm versus 706 mOhm).

Q: Are there packaging differences between these parts?

A: The 477SMH016M is supplied in standard packaging, while the 477AXZ016M is supplied in Tape & Reel (TR) format. Both use identical surface-mount radial can packages. Tape & Reel packaging is standard for high-volume production assembly.

Q: Which part should be selected for high-temperature or long-lifetime applications?

A: The 477AXZ016M is the appropriate selection for applications requiring extended operational life or sustained high-temperature exposure, as it provides double the rated lifetime (2000 Hrs @ 105°C) compared to the 477SMH016M.

Q: Do both parts meet current regulatory requirements?

A: Yes. Both the 477SMH016M and 477AXZ016M are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component manufacturing and use.

Q: Is the low-frequency ripple current difference significant?

A: The 477SMH016M specifies 340 mA @ 120 Hz, while the 477AXZ016M specifies 300 mA @ 120 Hz. For bypass and decoupling applications operating at low frequencies, the 477SMH016M provides slightly higher ripple current capacity. Application-specific ripple current requirements should be evaluated against these specifications.