AFK688M06P44B-F Equivalent & Substitute Parts Reference

Part Overview

The AFK688M06P44B-F is a 6800 µF, 6.3 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in 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 for ongoing production and repair applications.

Key Parameters

Parameter	Value	Unit
Capacitance	6800	µF
Voltage - Rated	6.3	V
Tolerance	±20%	-
ESR @ 100 kHz	35	mOhm
Lifetime @ 105°C	5000	Hrs
Operating Temperature Range	-55 to 105	°C
Ripple Current @ 100 kHz	1.8	A
Package Type	Radial, Can - SMD	-
Size / Dimension	0.630" Dia (16.00 mm)	-
Height - Seated (Max)	0.669" (17.00 mm)	-
Polarization	Polar	-
Mounting Type	Surface Mount	-
RoHS Status	ROHS3 Compliant	-
AEC-Q200 Rated	Yes	-

Substitute Part Grouping Explanation

Substitution of the AFK688M06P44B-F is determined by strict equivalence across the following critical parameters:

Electrical Parameters (Must Match):

Capacitance: 6800 µF
Voltage Rating: 6.3 V
Tolerance: ±20%
Ripple Current @ 100 kHz: 1.8 A (or equivalent)
Lifetime @ 105°C: 5000 Hrs (or greater)
Operating Temperature Range: -55°C to 105°C (or wider)

Mechanical Parameters (Must Match):

Package Type: Radial, Can - SMD
Mounting Type: Surface Mount
Polarization: Polar
Physical Dimensions: 0.630" Dia (16.00 mm) maximum
Height: 0.669" (17.00 mm) maximum

Compliance Parameters:

RoHS3 Compliant
AEC-Q200 Rated (for automotive applications)

Substitute parts are classified into two categories:

Direct Substitutes: Parts meeting all electrical, mechanical, and compliance parameters with identical or superior performance characteristics.

Similar Substitutes: Parts meeting all critical electrical and mechanical parameters but with minor variations in non-critical specifications (such as impedance or land size) that do not affect functional compatibility.

Parameter Comparison

Parameter	AFK688M06P44B-F (CDE)	EEE-FK0J682AM (Panasonic)	EEV-FK0J682M (Panasonic)	EMVY6R3GRA682MLN0S (Chemi-Con)
Manufacturer	Cornell Dubilier Electronics	Panasonic Electronic Components	Panasonic Electronic Components	Chemi-Con
Capacitance	6800 µF	6800 µF	6800 µF	6800 µF
Voltage - Rated	6.3 V	6.3 V	6.3 V	6.3 V
Tolerance	±20%	±20%	±20%	±20%
ESR @ 100 kHz	35 mOhm	35 mOhm	35 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 @ 100 kHz	1.8 A	1.8 A	1.8 A	1.63 A
Ripple Current @ 120 Hz	1.35 A	1.35 A	1.35 A	1.3855 A
Impedance	35 mOhms	35 mOhms	35 mOhms	38 mOhms
Size / Dimension	0.630" Dia (16.00 mm)	0.630" Dia (16.00 mm)	0.630" Dia (16.00 mm)	0.630" Dia (16.00 mm)
Height - Seated (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	0.669" L x 0.748" W (17.00 x 19.00 mm)	0.669" L x 0.669" W (17.00 x 17.00 mm)	0.669" L x 0.669" W (17.00 x 17.00 mm)	0.669" L x 0.669" W (17.00 x 17.00 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
Polarization	Polar	Polar	Polar	Polar
Product Status	Discontinued	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
AEC-Q200 Rated	Yes	Yes	Yes	No
Packaging	-	Tape & Reel (TR)	Tape & Reel (TR)	-
Inventory Status	835 Pcs	919 Pcs	4580 Pcs	1150 Pcs

Engineering Selection Recommendations

Direct Substitutes (Recommended Priority):

EEV-FK0J682M (Panasonic Electronic Components) is the primary recommended substitute. This part maintains full electrical and mechanical equivalence to the AFK688M06P44B-F with identical capacitance, voltage rating, tolerance, ESR, ripple current specifications, and operating temperature range. The EEV-FK0J682M carries AEC-Q200 automotive qualification, ROHS3 compliance, and is currently in active production with substantial inventory availability (4580 Pcs). The part is supplied in Tape & Reel packaging suitable for automated assembly processes.

EEE-FK0J682AM (Panasonic Electronic Components) serves as a secondary direct substitute with identical electrical specifications and AEC-Q200 qualification. This part differs only in surface mount land size (17.00 x 17.00 mm versus 17.00 x 19.00 mm on the original) and is also in active production with good inventory levels (919 Pcs).

Similar Substitute (Alternative Option):

EMVY6R3GRA682MLN0S (Chemi-Con) meets all critical electrical and mechanical parameters with the following considerations: The part exhibits slightly elevated impedance (38 mOhms versus 35 mOhms) and reduced ripple current capacity at 100 kHz (1.63 A versus 1.8 A). The physical height is increased to 0.846" (21.50 mm) compared to 0.669" (17.00 mm) on the original, which may require PCB layout verification. This part does not carry AEC-Q200 automotive qualification. Selection of this substitute is appropriate only for non-automotive applications or where the increased height does not create mechanical conflicts.

Selection Criteria:

For automotive applications requiring AEC-Q200 compliance, select either EEV-FK0J682M or EEE-FK0J682AM. For general-purpose applications where automotive qualification is not required and PCB height constraints permit, EMVY6R3GRA682MLN0S is acceptable.

Frequently Asked Questions (FAQ)

Q: Can EEV-FK0J682M be used as a direct replacement for AFK688M06P44B-F in automotive applications?

A: Yes. EEV-FK0J682M meets all electrical specifications (6800 µF, 6.3 V, ±20% tolerance, 35 mOhm ESR, 1.8 A ripple current @ 100 kHz, 5000 Hrs @ 105°C), maintains identical physical dimensions (0.630" diameter, 0.669" height), carries AEC-Q200 automotive qualification, and is ROHS3 compliant. The part is functionally equivalent for direct substitution.

Q: What is the difference between EEE-FK0J682AM and EEV-FK0J682M?

A: Both parts are manufactured by Panasonic and share identical electrical specifications. The primary difference is surface mount land size: EEE-FK0J682AM uses 17.00 x 17.00 mm land pattern while EEV-FK0J682M also uses 17.00 x 17.00 mm. The original AFK688M06P44B-F uses 17.00 x 19.00 mm land pattern. Both Panasonic substitutes carry AEC-Q200 qualification and are in active production. EEV-FK0J682M has higher inventory availability (4580 Pcs versus 919 Pcs).

Q: Why is EMVY6R3GRA682MLN0S classified as a similar substitute rather than a direct substitute?

A: EMVY6R3GRA682MLN0S exhibits three deviations from the original specification: (1) Impedance is 38 mOhms versus 35 mOhms, resulting in slightly higher ESR; (2) Ripple current at 100 kHz is 1.63 A versus 1.8 A, representing reduced high-frequency current handling; (3) Physical height is 0.846" (21.50 mm) versus 0.669" (17.00 mm), requiring PCB layout verification. Additionally, this part does not carry AEC-Q200 automotive qualification. These factors classify it as a similar rather than direct substitute.

Q: Can EMVY6R3GRA682MLN0S be used in automotive applications?

A: EMVY6R3GRA682MLN0S is not AEC-Q200 qualified and therefore is not recommended for automotive applications requiring this certification. Use of this part in automotive designs should be evaluated against specific application requirements and customer qualification standards.

Q: What packaging formats are available for the substitute parts?

A: EEE-FK0J682AM and EEV-FK0J682M are supplied in Tape & Reel (TR) packaging suitable for automated pick-and-place assembly. EMVY6R3GRA682MLN0S packaging format is not specified in the provided data. Confirm packaging requirements with your procurement process before ordering.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. EEE-FK0J682AM, EEV-FK0J682M, and EMVY6R3GRA682MLN0S are all ROHS3 compliant and REACH unaffected, meeting environmental regulatory requirements equivalent to the original AFK688M06P44B-F.

Q: What is the moisture sensitivity level (MSL) for the substitute parts?

A: All substitute parts carry MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling. This matches the original part specification.

Q: Can the substitute parts handle the same ripple current as the original?

A: EEE-FK0J682AM and EEV-FK0J682M handle identical ripple current specifications: 1.35 A @ 120 Hz and 1.8 A @ 100 kHz. EMVY6R3GRA682MLN0S handles 1.3855 A @ 120 Hz and 1.63 A @ 100 kHz, representing a 9.4% reduction in high-frequency ripple current capacity. For applications requiring maximum ripple current handling, select Panasonic parts.

Q: What is the operating temperature range for substitute parts?

A: All substitute parts operate across -55°C to 105°C, matching the original AFK688M06P44B-F specification. All parts maintain 5000 hours lifetime at 105°C continuous operation.

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