AFK475M50B12B-F Equivalent & Substitute Parts

Part Overview

The AFK475M50B12B-F is a 4.7 µF, 50 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 discontinued at DiGi Electronics, necessitating identification of functionally equivalent alternatives that maintain electrical and mechanical compatibility within the specified parameter envelope.

Key Parameters

Parameter	Value	Unit	Substitution Criticality
Capacitance	4.7	µF	Critical
Voltage Rating	50	V	Critical
Tolerance	±20%	%	Critical
Operating Temperature Range	-55 to 105	°C	Critical
Lifetime at Temperature	2000	Hrs @ 105°C	Critical
Ripple Current @ 100 kHz	60	mA	Critical
Ripple Current @ 120 Hz	45	mA	Critical
Package Type	Radial, Can - SMD	-	Critical
Case Diameter	0.157" (4.00mm)	Dia	Critical
Height - Seated (Max)	0.240" (6.10mm)	-	Critical
Polarization	Polar	-	Critical
AEC-Q200 Rating	Yes	-	Critical
RoHS3 Compliance	Compliant	-	Critical
Moisture Sensitivity Level	1	-	Important

Substitute Part Grouping Explanation

Substitution of the AFK475M50B12B-F is determined by strict equivalence across the following parameters:

Electrical Parameters (Must Match Exactly):

Capacitance: 4.7 µF
Voltage Rating: 50 V
Tolerance: ±20%
Operating Temperature Range: -55°C to 105°C
Lifetime: 2000 Hrs @ 105°C
Ripple Current @ 100 kHz: 60 mA
Ripple Current @ 120 Hz: 45 mA

Mechanical Parameters (Must Match Exactly):

Package Type: Radial, Can - SMD (Surface Mount)
Case Diameter: 0.157" (4.00mm)
Height - Seated (Max): 0.240" (6.10mm)
Polarization: Polar

Compliance & Certification (Must Match):

AEC-Q200 Automotive Rating
RoHS3 Compliance
Moisture Sensitivity Level: 1 (Unlimited)

The substitute part EEE-FK1H4R7R from Panasonic Electronic Components meets all critical electrical and mechanical parameters, maintaining full compatibility with the original AFK475M50B12B-F specification.

Parameter Comparison

Parameter	AFK475M50B12B-F (CDE)	EEE-FK1H4R7R (Panasonic)	Match Status
Capacitance	4.7 µF	4.7 µF	Exact Match
Voltage Rating	50 V	50 V	Exact Match
Tolerance	±20%	±20%	Exact Match
Operating Temperature	-55°C to 105°C	-55°C to 105°C	Exact Match
Lifetime @ 105°C	2000 Hrs	2000 Hrs	Exact Match
Ripple Current @ 100 kHz	60 mA	60 mA	Exact Match
Ripple Current @ 120 Hz	45 mA	45 mA	Exact Match
Impedance	2.9 Ohms	2.9 Ohms	Exact Match
Case Diameter	0.157" (4.00mm)	0.157" (4.00mm)	Exact Match
Height - Seated (Max)	0.240" (6.10mm)	0.240" (6.10mm)	Exact Match
Package Type	Radial, Can - SMD	Radial, Can - SMD	Exact Match
Polarization	Polar	Polar	Exact Match
AEC-Q200 Rating	Yes	Yes	Exact Match
RoHS3 Compliance	Compliant	Compliant	Exact Match
Moisture Sensitivity Level	1 (Unlimited)	1 (Unlimited)	Exact Match
Product Status	Discontinued at DiGi Electronics	Active	Substitute Available
Packaging	Bulk	Tape & Reel (TR)	Different Format

Engineering Selection Recommendations

The EEE-FK1H4R7R from Panasonic Electronic Components is a direct functional equivalent to the discontinued AFK475M50B12B-F. Selection of this substitute is based on the following engineering criteria:

Electrical Equivalence: All critical electrical parameters match exactly, including capacitance, voltage rating, tolerance, operating temperature range, lifetime rating, and ripple current specifications at both low and high frequencies.

Mechanical Compatibility: The substitute maintains identical physical dimensions (0.157" diameter, 0.240" maximum height) and package configuration (Radial, Can - SMD), ensuring direct compatibility with existing PCB layouts and assembly processes.

Compliance & Certification: Both components carry AEC-Q200 automotive qualification and RoHS3 compliance, meeting the same regulatory and quality standards. Moisture Sensitivity Level 1 (Unlimited) is maintained, eliminating moisture handling constraints.

Product Availability: The EEE-FK1H4R7R is currently in active production status with substantial inventory availability (11,104 pieces), providing supply continuity for the discontinued AFK475M50B12B-F.

Packaging Consideration: The substitute is supplied in Tape & Reel (TR) format, which differs from the original bulk packaging. This format is standard for high-volume surface mount assembly operations and does not affect electrical or mechanical performance.

Frequently Asked Questions (FAQ)

Q: Can the EEE-FK1H4R7R be used as a direct replacement for the AFK475M50B12B-F in automotive applications?

A: Yes. Both components carry AEC-Q200 automotive qualification and meet identical electrical and mechanical specifications. The substitute is suitable for direct replacement in automotive bypass and decoupling circuits.

Q: Are there any differences in ESR (Equivalent Series Resistance) between the two parts?

A: The AFK475M50B12B-F specifies 2.9 Ohms ESR @ 100 kHz. The EEE-FK1H4R7R also specifies 2.9 Ohms impedance, providing equivalent performance in high-frequency applications.

Q: Does the Tape & Reel packaging of the EEE-FK1H4R7R affect its electrical performance?

A: No. Packaging format (Tape & Reel versus bulk) does not affect electrical or mechanical performance. The component specifications remain identical regardless of packaging configuration.

Q: Are both parts RoHS3 compliant?

A: Yes. Both the AFK475M50B12B-F and EEE-FK1H4R7R are RoHS3 compliant and REACH unaffected, meeting current environmental regulations.

Q: What is the maximum operating temperature for both components?

A: Both components operate across the identical temperature range of -55°C to 105°C with a rated lifetime of 2000 hours at 105°C.

Q: Can the EEE-FK1H4R7R handle the same ripple current as the original part?

A: Yes. Both components are rated for 60 mA ripple current @ 100 kHz and 45 mA ripple current @ 120 Hz, providing equivalent performance in power supply and filtering applications.

Q: Is the surface mount land size identical between the two parts?

A: The AFK475M50B12B-F specifies 0.169" L x 0.217" W (4.30mm x 5.50mm) land size, while the EEE-FK1H4R7R specifies 0.169" L x 0.169" W (4.30mm x 4.30mm). Both land sizes are compatible with standard 4.00mm diameter case components; the difference reflects manufacturer design variation and does not prevent direct substitution on existing PCB layouts.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message