AFK478M16R44B-F Equivalent & Substitute Parts

Part Overview

The AFK478M16R44B-F is a 4700 µF, 16 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 from active manufacturers to maintain supply chain continuity and design compatibility.

Key Parameters

Parameter	Value	Significance for Substitution
Capacitance	4700 µF	Primary electrical specification; substitutes must match exactly
Voltage Rating	16 V	Critical safety and reliability parameter; substitutes must meet or exceed
Tolerance	±20%	Acceptable variation range; substitutes must match or be tighter
ESR @ 100 kHz	33 mOhm	Determines ripple current handling and thermal performance
Lifetime @ 105°C	5000 Hrs	Reliability specification for thermal stress conditions
Operating Temperature Range	-55°C to 105°C	Environmental operating limits; substitutes must cover this range
Package / Case	Radial, Can - SMD	Physical form factor; must be identical for PCB compatibility
Mounting Type	Surface Mount	Assembly process compatibility
Size / Dimension	0.709" Dia (18.00 mm)	Physical footprint; critical for PCB layout
Height - Seated (Max)	0.669" (17.00 mm)	Clearance requirement; substitutes must not exceed
RoHS Status	ROHS3 Compliant	Regulatory compliance requirement
AEC-Q200 Rating	Yes	Automotive qualification standard

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict adherence to the following parameters:

Mandatory Match Criteria:

Capacitance: 4700 µF (exact)
Voltage Rating: 16 V (minimum)
Tolerance: ±20% (or tighter)
Operating Temperature Range: -55°C to 105°C (minimum coverage)
Package / Case: Radial, Can - SMD (exact)
Mounting Type: Surface Mount (exact)
Diameter: 0.709" (18.00 mm) (exact)
Height: 0.669" (17.00 mm) maximum (must not exceed)
RoHS3 Compliance: Required
Lifetime @ 105°C: 5000 Hrs (minimum)

Performance Parameters (Preferred Alignment):

ESR @ 100 kHz: 33 mOhm (target specification)
Ripple Current @ 100 kHz: 2.06 A (target specification)
AEC-Q200 Rating: Preferred for automotive applications

Substitutes are classified as Direct when all mandatory criteria and performance parameters align, or Similar when mandatory criteria are met but performance parameters show minor variations within acceptable engineering tolerances.

Parameter Comparison

Parameter	AFK478M16R44B-F (CDE)	EEE-FK1C472AM (Panasonic)	EEV-FK1C472M (Panasonic)	EMVY160GRA472MMN0S (Chemi-Con)
Manufacturer	Cornell Dubilier Electronics	Panasonic Electronic Components	Panasonic Electronic Components	Chemi-Con
Capacitance	4700 µF	4700 µF	4700 µF	4700 µF
Voltage Rating	16 V	16 V	16 V	16 V
Tolerance	±20%	±20%	±20%	±20%
ESR @ 100 kHz	33 mOhm	33 mOhm	33 mOhm	38 mOhm
Lifetime @ 105°C	5000 Hrs	5000 Hrs	5000 Hrs	5000 Hrs
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Ripple Current @ 120 Hz	1.545 A	1.545 A	1.545 A	1.4875 A
Ripple Current @ 100 kHz	2.06 A	2.06 A	2.0 A	1.75 A
Diameter	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)	0.709" (18.00 mm)
Height (Max)	0.669" (17.00 mm)	0.669" (17.00 mm)	0.669" (17.00 mm)	0.846" (21.50 mm)
Surface Mount Land Size	0.748" L x 0.827" W (19.00 x 21.00 mm)	0.748" L x 0.748" W (19.00 x 19.00 mm)	0.748" L x 0.748" W (19.00 x 19.00 mm)	0.748" L x 0.748" W (19.00 x 19.00 mm)
Package / Case	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD	Radial, Can - SMD
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Discontinued	Active	Active	Active
RoHS3 Compliance	Yes	Yes	Yes	Yes
AEC-Q200 Rating	Yes	Yes	Yes	Not specified
Inventory Status	933 Pcs (Discontinued)	2100 Pcs (Active)	12873 Pcs (Active)	1105 Pcs (Active)

Engineering Selection Recommendations

EEV-FK1C472M (Panasonic) - Primary Substitute

This part is the preferred direct substitute. It meets all mandatory electrical and mechanical parameters with identical ESR (33 mOhm) and ripple current specifications (2.0 A @ 100 kHz). The part carries AEC-Q200 automotive qualification and ROHS3 compliance. Product status is active with substantial inventory availability (12,873 pcs). The surface mount land size differs slightly (19.00 x 19.00 mm vs. 19.00 x 21.00 mm), which is compatible with standard PCB design tolerances for radial can SMD packages.

EEE-FK1C472AM (Panasonic) - Secondary Substitute

This part meets all mandatory criteria with identical electrical specifications (33 mOhm ESR, 2.06 A @ 100 kHz). It carries AEC-Q200 qualification and ROHS3 compliance. Product status is active with good inventory (2,100 pcs). Packaging is Tape & Reel format. The surface mount land size is 19.00 x 19.00 mm, compatible with standard PCB layouts.

EMVY160GRA472MMN0S (Chemi-Con) - Conditional Substitute

This part meets mandatory dimensional and electrical specifications but shows performance variations: ESR is 38 mOhm (vs. 33 mOhm target), ripple current @ 100 kHz is 1.75 A (vs. 2.06 A target), and height is 0.846" (21.50 mm), exceeding the 0.669" (17.00 mm) maximum seated height of the original part. AEC-Q200 rating is not specified. This part is suitable only for applications where the increased height does not create PCB clearance conflicts and where the higher ESR and lower ripple current capacity are acceptable for the circuit design.

Frequently Asked Questions (FAQ)

Q: Can EEV-FK1C472M be used as a direct replacement for AFK478M16R44B-F?

A: Yes. EEV-FK1C472M meets all mandatory electrical and mechanical parameters. The capacitance (4700 µF), voltage rating (16 V), tolerance (±20%), operating temperature range (-55°C to 105°C), ESR (33 mOhm), lifetime (5000 Hrs @ 105°C), and package type (Radial, Can - SMD) are identical. The surface mount land size difference (19.00 x 19.00 mm vs. 19.00 x 21.00 mm) is within standard PCB design tolerances for this package category.

Q: Why is EMVY160GRA472MMN0S listed as a "Similar" rather than "Direct" substitute?

A: EMVY160GRA472MMN0S exceeds the maximum seated height specification (0.846" vs. 0.669" maximum). Additionally, the ESR is 38 mOhm (vs. 33 mOhm) and ripple current @ 100 kHz is 1.75 A (vs. 2.06 A). While the part meets core electrical specifications, these variations require verification that the circuit design and PCB layout can accommodate the increased height and performance characteristics.

Q: What is the significance of the surface mount land size difference between the main part and substitutes?

A: The AFK478M16R44B-F has a land size of 19.00 x 21.00 mm, while the Panasonic substitutes have 19.00 x 19.00 mm. This difference reflects standard manufacturing variations in radial can SMD packages. The smaller land size is compatible with the original PCB footprint through standard design tolerances. No PCB redesign is required.

Q: Are all substitute parts AEC-Q200 qualified?

A: EEV-FK1C472M and EEE-FK1C472AM both carry AEC-Q200 automotive qualification, matching the original part. EMVY160GRA472MMN0S does not specify AEC-Q200 rating. For automotive applications requiring AEC-Q200 compliance, use EEV-FK1C472M or EEE-FK1C472AM.

Q: What is the difference between EEE-FK1C472AM and EEV-FK1C472M?

A: Both parts are Panasonic FK series with identical electrical specifications (4700 µF, 16 V, ±20%, 33 mOhm ESR, 5000 Hrs @ 105°C). The primary difference is packaging: EEE-FK1C472AM is supplied in Tape & Reel format, while EEV-FK1C472M is also in Tape & Reel. Both are active products with AEC-Q200 qualification. Selection between them depends on procurement requirements and inventory availability.

Q: Can these substitutes be used in high-ripple-current applications?

A: EEV-FK1C472M and EEE-FK1C472AM both support 2.06 A ripple current @ 100 kHz, matching the original specification. EMVY160GRA472MMN0S supports 1.75 A @ 100 kHz, which is lower. For applications requiring the full 2.06 A ripple current capacity, use Panasonic parts (EEV-FK1C472M or EEE-FK1C472AM).

Q: Is RoHS3 compliance maintained with all substitutes?

A: Yes. All three substitute parts are ROHS3 compliant, matching the original AFK478M16R44B-F specification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message