475AVD050MDR Aluminum Electrolytic Capacitor - Equivalent & Substitute Parts

Part Overview

The 475AVD050MDR is a 4.7 µF, 50 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Cornell Dubilier / Illinois Capacitor. This component is classified as obsolete, indicating discontinued production and limited availability. The part operates across a temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C, suitable for general purpose applications requiring stable capacitance and low impedance characteristics.

Identification of equivalent and substitute parts is necessary due to the obsolete status of the 475AVD050MDR. Active production alternatives with identical or superior electrical and mechanical specifications are available to ensure design continuity and supply chain reliability.

Key Parameters

Parameter	475AVD050MDR
Capacitance	4.7 µF
Voltage Rating	50 V
Tolerance	±20%
ESR @ 120Hz	42.33 Ohm
Lifetime @ 105°C	2000 Hrs
Operating Temperature Range	-55°C ~ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Case Diameter	0.197" (5.00mm)
Maximum Height	0.217" (5.50mm)
Surface Mount Land Size	0.209" L x 0.209" W (5.30mm x 5.30mm)
Mounting Type	Surface Mount
Moisture Sensitivity Level	MSL 1 (Unlimited)
Product Status	Obsolete

Substitute Part Grouping Explanation

Substitute parts for the 475AVD050MDR are qualified based on strict electrical and mechanical compatibility criteria. All substitute candidates must satisfy the following mandatory parameters:

Electrical Compatibility Requirements:

Capacitance: 4.7 µF (exact match)
Voltage Rating: 50 V (minimum, equal or higher acceptable)
Tolerance: ±20% (exact match)
Polarization: Polar (exact match)
Operating Temperature Range: -55°C ~ 105°C (exact match)

Mechanical Compatibility Requirements:

Package Type: Radial, Can - SMD (exact match)
Case Diameter: 0.197" (5.00mm) (exact match)
Surface Mount Land Size: 0.209" L x 0.209" W (5.30mm x 5.30mm) (exact match or compatible)
Mounting Type: Surface Mount (exact match)
Moisture Sensitivity Level: MSL 1 (exact match)

Substitution Categories:

Direct Substitutes (475AXZ050M, ATB475M050, MAL215371478E3): Meet all electrical and mechanical requirements with identical or superior performance characteristics. These parts are functionally interchangeable with the 475AVD050MDR in existing designs.

Upgrade Substitute (475SVL050MDW): Meets all electrical and mechanical requirements with extended lifetime rating (3000 Hrs @ 105°C versus 2000 Hrs @ 105°C), providing enhanced reliability margin.

Parameter Comparison

Parameter	475AVD050MDR (Main)	475AXZ050M	ATB475M050	475SVL050MDW	MAL215371478E3
Capacitance	4.7 µF	4.7 µF	4.7 µF	4.7 µF	4.7 µF
Voltage Rating	50 V	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%	±20%
ESR @ 120Hz	42.33 Ohm	42.328 Ohm	33.86 Ohm	42.3 Ohm	6 Ohm @ 100kHz
Lifetime @ 105°C	2000 Hrs	2000 Hrs	3000 Hrs	3000 Hrs	2000 Hrs
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C	-55°C ~ 105°C
Polarization	Polar	Polar	Polar	Polar	Polar
Case Diameter	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)	0.197" (5.00mm)
Maximum Height	0.217" (5.50mm)	0.220" (5.60mm)	0.224" (5.70mm)	0.232" (5.90mm)	0.217" (5.50mm)
Surface Mount Land Size	0.209" x 0.209" (5.30mm x 5.30mm)	0.209" x 0.209" (5.30mm x 5.30mm)	0.209" x 0.228" (5.30mm x 5.80mm)	0.209" x 0.209" (5.30mm x 5.30mm)	0.209" x 0.209" (5.30mm x 5.30mm)
Package Type	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
MSL Rating	MSL 1	MSL 1	MSL 1	MSL 1	MSL 1
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement (Pin-Compatible, No Design Changes):

The 475AXZ050M and MAL215371478E3 provide direct functional equivalence to the 475AVD050MDR. Both parts maintain identical electrical specifications (4.7 µF, 50 V, ±20% tolerance) and mechanical compatibility (5.00mm diameter, 5.30mm x 5.30mm land size). The 475AXZ050M is manufactured by Cornell Dubilier / Illinois Capacitor, maintaining original manufacturer continuity. The MAL215371478E3, manufactured by Vishay Beyschlag/Draloric/BC Components, offers significantly lower ESR (6 Ohm @ 100kHz) and is available in higher inventory quantities (9332 pcs). Both parts are ROHS3 compliant and carry active product status.

For Enhanced Reliability (Extended Lifetime):

The ATB475M050 and 475SVL050MDW both provide extended lifetime ratings of 3000 hours at 105°C, compared to the 2000-hour rating of the 475AVD050MDR. The ATB475M050 offers reduced ESR (33.86 Ohm @ 120Hz) and higher ripple current capability (66.5 mA @ 120 Hz, 95 mA @ 100 kHz). The 475SVL050MDW maintains ESR characteristics similar to the original part (42.3 Ohm @ 120Hz) while providing the extended lifetime benefit. Both are ROHS3 compliant with active product status.

Compliance Considerations:

All substitute parts carry ROHS3 compliance certification and REACH unaffected status, matching or exceeding the regulatory requirements of the obsolete 475AVD050MDR. All parts are classified under HTSUS code 8532.22.0020 and ECCN EAR99.

Height Clearance Verification:

The 475AXZ050M (0.220" / 5.60mm), ATB475M050 (0.224" / 5.70mm), and 475SVL050MDW (0.232" / 5.90mm) exceed the original part height (0.217" / 5.50mm). PCB layout verification is required to confirm adequate clearance in height-constrained applications.

Land Size Compatibility:

The ATB475M050 specifies a surface mount land size of 0.209" L x 0.228" W (5.30mm x 5.80mm), differing from the standard 0.209" x 0.209" (5.30mm x 5.30mm) footprint. All other substitute parts maintain the standard footprint.

Frequently Asked Questions (FAQ)

Q: Can the 475AXZ050M be used as a direct replacement for the 475AVD050MDR without PCB modifications?

A: The 475AXZ050M is electrically and mechanically compatible with the 475AVD050MDR. However, the maximum seated height is 0.220" (5.60mm) compared to 0.217" (5.50mm) for the original part. PCB layout clearance must be verified to confirm no interference with adjacent components or enclosure constraints.

Q: What is the primary advantage of selecting the MAL215371478E3 over Cornell Dubilier alternatives?

A: The MAL215371478E3 offers significantly lower ESR (6 Ohm @ 100kHz) compared to the 475AVD050MDR (42.33 Ohm @ 120Hz), resulting in reduced heat generation and improved high-frequency performance. Additionally, inventory availability is substantially higher (9332 pcs). The trade-off is manufacturer change from Cornell Dubilier to Vishay Beyschlag/Draloric/BC Components.

Q: Should I select an upgrade part with 3000-hour lifetime rating?

A: Selection of ATB475M050 or 475SVL050MDW depends on application requirements. If the design operates continuously at elevated temperatures near 105°C, the extended 3000-hour lifetime provides additional reliability margin. For applications operating at lower temperatures or with intermittent duty cycles, the 2000-hour rating of direct substitutes is sufficient.

Q: Is the ATB475M050 compatible with the original PCB footprint?

A: The ATB475M050 specifies a surface mount land size of 0.209" L x 0.228" W (5.30mm x 5.80mm), compared to the standard 0.209" x 0.209" (5.30mm x 5.30mm) footprint. This represents a 0.019" (0.50mm) increase in one dimension. PCB pad layout verification is required to confirm compatibility with existing solder pads.

Q: Are all substitute parts RoHS compliant?

A: All substitute parts listed (475AXZ050M, ATB475M050, 475SVL050MDW, MAL215371478E3) carry ROHS3 compliance certification. The original 475AVD050MDR does not specify RoHS status. All parts are REACH unaffected.

Q: What is the difference between ESR measurements at different frequencies?

A: ESR varies with frequency due to the internal impedance characteristics of the capacitor. The 475AVD050MDR specifies ESR at 120 Hz (42.33 Ohm), while the MAL215371478E3 specifies ESR at 100 kHz (6 Ohm). Lower ESR at higher frequencies indicates better performance in switching and high-frequency applications. Direct ESR comparison requires measurements at identical frequencies.

Q: Can I mix different substitute parts in the same design?

A: All substitute parts meet the electrical and mechanical requirements for the 475AVD050MDR. However, mixing different manufacturers or series in the same design introduces variability in ESR, ripple current handling, and lifetime characteristics. Design consistency is optimized by selecting a single substitute part across all instances of the 475AVD050MDR.

Q: What is MSL 1 rating and why is it important?

A: MSL (Moisture Sensitivity Level) 1 indicates unlimited shelf life without moisture bake-out requirements. All listed parts carry MSL 1 rating, meaning they can be stored and handled without special moisture control procedures, matching the original part's handling requirements.

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