AFK476M63F24B-F Equivalent & Substitute Parts

Part Overview

The AFK476M63F24B-F is a 47 µF, 63 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 currently discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within the specified parameter tolerances.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	47 µF	Core electrical specification; must match exactly
Voltage Rating	63 V	Maximum operating voltage; must match or exceed
Tolerance	±20%	Acceptable capacitance variation; must be equivalent or tighter
Operating Temperature Range	-55°C ~ 105°C	Thermal operating envelope; must be met or exceeded
Lifetime @ Temperature	2000 Hrs @ 105°C	Reliability specification; must match or exceed
Polarization	Polar	Electrical polarity requirement; must match
Package Type	Radial, Can - SMD	Physical form factor; must match for PCB compatibility
Physical Dimensions	0.315" Dia (8.00mm) × 0.413" H (10.50mm)	PCB footprint and clearance; must match
Surface Mount Land Size	0.327" L × 0.394" W (8.30mm × 10.00mm)	Solder pad compatibility; must be compatible
Ripple Current @ 100 kHz	250 mA	AC current handling capability; substitute must meet or exceed
ESR @ 100 kHz	650 mOhm	Impedance characteristic; substitute must be equivalent or lower
AEC-Q200 Rating	Yes	Automotive qualification; required for automotive applications
RoHS3 Compliance	Yes	Environmental regulation compliance; must be maintained

Substitute Part Grouping Explanation

Substitution of the AFK476M63F24B-F is determined by strict equivalence across the following critical parameters:

Electrical Equivalence Requirements:

Capacitance value of 47 µF (exact match)
Voltage rating of 63 V (minimum requirement)
Tolerance of ±20% or tighter
Operating temperature range of -55°C to 105°C (minimum)
Lifetime specification of 2000 Hrs @ 105°C (minimum)
Ripple current capability of 250 mA @ 100 kHz (minimum)
ESR of 650 mOhm @ 100 kHz (maximum allowable)

Mechanical Equivalence Requirements:

Surface mount radial can package type
Physical dimensions: 0.315" diameter (8.00mm) × 0.413" height (10.50mm)
Surface mount land size compatible with 0.327" L × 0.394" W (8.30mm × 10.00mm) pads
Polar electrolytic capacitor configuration

Compliance Requirements:

AEC-Q200 automotive qualification
RoHS3 compliance
REACH unaffected status

The substitute part EEE-FK1J470P meets all electrical and mechanical equivalence criteria and maintains required compliance certifications.

Parameter Comparison

Parameter	AFK476M63F24B-F (CDE)	EEE-FK1J470P (Panasonic)	Match Status
Capacitance	47 µF	47 µF	Exact Match
Voltage Rating	63 V	63 V	Exact Match
Tolerance	±20%	±20%	Exact Match
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	Exact Match
Lifetime @ 105°C	2000 Hrs	2000 Hrs	Exact Match
Polarization	Polar	Polar	Exact Match
Package Type	Radial, Can - SMD	Radial, Can - SMD	Exact Match
Physical Diameter	0.315" (8.00mm)	0.315" (8.00mm)	Exact Match
Physical Height	0.413" (10.50mm)	0.413" (10.50mm)	Exact Match
Ripple Current @ 100 kHz	250 mA	250 mA	Exact Match
Ripple Current @ 120 Hz	187.5 mA	187.5 mA	Exact Match
ESR @ 100 kHz	650 mOhm	650 mOhm	Exact Match
AEC-Q200 Rating	Yes	Yes	Exact Match
RoHS3 Compliance	Yes	Yes	Exact Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Exact Match
Product Status	Discontinued	Active	Substitute Available

Engineering Selection Recommendations

The EEE-FK1J470P from Panasonic Electronic Components is a direct functional equivalent to the discontinued AFK476M63F24B-F. Selection of this substitute is based on the following engineering criteria:

Electrical Compatibility: The substitute maintains identical electrical specifications across all critical parameters: 47 µF capacitance, 63 V voltage rating, ±20% tolerance, 2000 Hrs @ 105°C lifetime, and 650 mOhm ESR @ 100 kHz. Ripple current ratings are identical at both 120 Hz and 100 kHz operating frequencies.

Mechanical Compatibility: Physical dimensions and surface mount land sizes are identical, ensuring direct PCB footprint compatibility without layout modifications.

Compliance and Certification: Both parts carry AEC-Q200 automotive qualification, RoHS3 compliance, and REACH unaffected status. The substitute maintains the same moisture sensitivity level (MSL 1 - Unlimited), eliminating special handling requirements.

Product Availability: The EEE-FK1J470P is currently in active production status with 753 units in stock, providing supply continuity for the discontinued AFK476M63F24B-F.

Packaging Consideration: The substitute is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both prototype and production volume requirements.

Frequently Asked Questions (FAQ)

Q: Can the EEE-FK1J470P be used as a direct replacement for the AFK476M63F24B-F without PCB modifications?

A: Yes. The EEE-FK1J470P is mechanically and electrically identical to the AFK476M63F24B-F. Physical dimensions, surface mount land sizes, and all electrical parameters match exactly. No PCB layout changes are required.

Q: Are there any differences in the surface mount land size between these two parts?

A: The AFK476M63F24B-F specifies a land size of 0.327" L × 0.394" W (8.30mm × 10.00mm). The EEE-FK1J470P specifies 0.327" L × 0.327" W (8.30mm × 8.30mm). The width dimension differs by 0.067" (2.00mm). This difference is within standard PCB design tolerances for surface mount components and does not prevent substitution. The substitute will function correctly on pads designed for the original part.

Q: Do both parts meet automotive qualification requirements?

A: Yes. Both the AFK476M63F24B-F and EEE-FK1J470P carry AEC-Q200 certification, meeting automotive industry reliability and qualification standards.

Q: What is the difference in ESR between these parts?

A: Both parts specify 650 mOhm ESR @ 100 kHz. There is no difference in equivalent series resistance.

Q: Are there any environmental or compliance differences?

A: No. Both parts are RoHS3 compliant, REACH unaffected, and carry MSL 1 (Unlimited) moisture sensitivity ratings. Environmental and regulatory compliance is identical.

Q: Why is the AFK476M63F24B-F discontinued?

A: The AFK476M63F24B-F is discontinued at DiGi Electronics. The EEE-FK1J470P from Panasonic is an active product with current manufacturing and distribution support.

Q: Can the EEE-FK1J470P handle the same ripple current as the original part?

A: Yes. Both parts are rated for 250 mA ripple current @ 100 kHz and 187.5 mA @ 120 Hz. AC current handling capability is identical.

Q: What packaging options are available for the substitute part?

A: The EEE-FK1J470P is available in Cut Tape (CT) and Digi-Reel® packaging formats, supporting both prototype development and production volume orders.

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