AHA475M2AF24B-F Equivalent & Substitute Parts

Part Overview

The AHA475M2AF24B-F is a 4.7 µF, 100 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in a surface mount radial can package. This component is designed for automotive, bypass, and decoupling applications with AEC-Q200 qualification. The part is classified as obsolete, necessitating identification of active equivalent alternatives that maintain electrical and mechanical compatibility for ongoing production and repair requirements.

Key Parameters

Parameter	Value
Capacitance	4.7 µF
Voltage Rating	100 V
Tolerance	±20%
Operating Temperature Range	-55°C to 105°C
Lifetime at Temperature	2000 Hrs @ 105°C
Polarization	Polar
Package Type	Radial, Can - SMD
Mounting Type	Surface Mount
Physical Diameter	0.315" (8.00 mm)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution of the AHA475M2AF24B-F is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Capacitance value: 4.7 µF (exact match required)
Voltage rating: 100 V (minimum acceptable)
Tolerance: ±20% (matching specification)
Operating temperature range: -55°C to 105°C (minimum required coverage)
Lifetime specification: 2000 Hrs @ 105°C (minimum acceptable)
Polarization: Polar (required for electrolytic type)

Mechanical Equivalence Criteria:

Package type: Radial, Can - SMD (exact match required)
Mounting type: Surface Mount (exact match required)
Physical diameter: 0.315" (8.00 mm) (exact match required)
Surface mount land size: 0.327" L x 0.327" W (8.30 mm x 8.30 mm) (exact match required)

Compliance Criteria:

RoHS3 compliance (required)
Moisture Sensitivity Level 1 (required)

The substitute part UUX2A4R7MCL1GS from Nichicon meets all electrical and mechanical equivalence criteria and maintains required compliance standards.

Parameter Comparison

Parameter	AHA475M2AF24B-F (CDE)	UUX2A4R7MCL1GS (Nichicon)
Capacitance	4.7 µF	4.7 µF
Voltage Rating	100 V	100 V
Tolerance	±20%	±20%
Operating Temperature Range	-55°C to 105°C	-55°C to 105°C
Lifetime @ Temperature	2000 Hrs @ 105°C	2000 Hrs @ 105°C
Polarization	Polar	Polar
Package Type	Radial, Can - SMD	Radial, Can - SMD
Mounting Type	Surface Mount	Surface Mount
Physical Diameter	0.315" (8.00 mm)	0.315" (8.00 mm)
Height - Seated (Max)	0.402" (10.20 mm)	0.256" (6.50 mm)
Surface Mount Land Size	0.327" L x 0.327" W (8.30 mm x 8.30 mm)	0.327" L x 0.327" W (8.30 mm x 8.30 mm)
RoHS Status	ROHS3 Compliant	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)
Product Status	Obsolete	Active

Engineering Selection Recommendations

The UUX2A4R7MCL1GS from Nichicon is a direct functional equivalent to the obsolete AHA475M2AF24B-F. Both components share identical electrical specifications across capacitance, voltage rating, tolerance, operating temperature range, and lifetime rating. Mechanical compatibility is confirmed through matching package type, mounting configuration, physical diameter, and surface mount land pattern.

The Nichicon substitute offers a reduced seated height of 0.256" (6.50 mm) compared to the original 0.402" (10.20 mm), which provides a design advantage for space-constrained applications without compromising electrical performance.

Both components maintain ROHS3 compliance and Moisture Sensitivity Level 1 classification, ensuring compatibility with current manufacturing and storage requirements. The substitute part is currently in active production status, providing long-term supply availability compared to the obsolete original component.

Frequently Asked Questions (FAQ)

Q: Can the UUX2A4R7MCL1GS be used as a direct replacement for the AHA475M2AF24B-F?

A: Yes. Both components meet identical electrical specifications for capacitance (4.7 µF), voltage rating (100 V), tolerance (±20%), operating temperature range (-55°C to 105°C), and lifetime rating (2000 Hrs @ 105°C). Mechanical compatibility is confirmed through matching surface mount package type, physical diameter (8.00 mm), and land pattern (8.30 mm x 8.30 mm).

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

A: The UUX2A4R7MCL1GS has a maximum seated height of 0.256" (6.50 mm) compared to the AHA475M2AF24B-F at 0.402" (10.20 mm). This 0.146" (3.70 mm) reduction in height provides additional clearance in space-constrained PCB layouts. The reduced height does not affect electrical performance or compatibility with the specified land pattern.

Q: Are both components suitable for automotive applications?

A: The AHA475M2AF24B-F carries AEC-Q200 automotive qualification. The UUX2A4R7MCL1GS is specified for general purpose applications without explicit automotive rating designation. Component selection for automotive applications must consider specific qualification requirements of the end application.

Q: What is the difference in ripple current specifications?

A: The AHA475M2AF24B-F specifies 50 mA @ 120 Hz and 85 mA @ 100 kHz. The UUX2A4R7MCL1GS specifies 42 mA @ 120 Hz and 70.14 mA @ 10 kHz. These differences reflect design variations between manufacturers but do not affect substitution validity for applications within the specified electrical parameters.

Q: Do both components have the same packaging format?

A: Both components use Radial, Can - SMD package type with surface mount configuration. The AHA475M2AF24B-F is supplied in standard packaging, while the UUX2A4R7MCL1GS is supplied in Tape & Reel (TR) format. Tape & Reel packaging is standard for high-volume surface mount assembly and does not affect component electrical or mechanical compatibility.

Q: Are there any compliance or regulatory differences?

A: Both components are ROHS3 compliant and classified as Moisture Sensitivity Level 1 (Unlimited). Both carry REACH Unaffected status and EAR99 ECCN classification. No compliance or regulatory barriers exist for substitution.

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