AFK226M50D16B-F Equivalent & Substitute Parts

Part Overview

The AFK226M50D16B-F is a 22 µF, 50 V aluminum electrolytic capacitor in surface mount radial can package manufactured by Cornell Dubilier Electronics (CDE). This component is designed for automotive, bypass, and decoupling applications with AEC-Q200 automotive qualification. The part is discontinued at DiGi Electronics, necessitating identification of equivalent substitute components that maintain electrical and mechanical compatibility with the original design specification.

Key Parameters

Parameter	Value	Unit
Capacitance	22	µF
Voltage - Rated	50	V
Tolerance	±20	%
ESR @ 100 kHz	880	mOhm
Lifetime @ 105°C	2000	Hrs
Operating Temperature Range	-55 to 105	°C
Ripple Current @ 100 kHz	165	mA
Package Type	Radial, Can - SMD	—
Size / Dimension	0.248" Dia (6.30 mm)	—
Height - Seated (Max)	0.240" (6.10 mm)	—
AEC-Q200 Rated	Yes	—
RoHS3 Compliant	Yes	—

Substitute Part Grouping Explanation

Substitution of the AFK226M50D16B-F is determined by strict equivalence across the following electrical and mechanical parameters:

Electrical Equivalence Criteria:

Capacitance: 22 µF (exact match required)
Voltage Rating: 50 V (minimum, equal or higher acceptable)
Tolerance: ±20% (matching tolerance class)
Lifetime: 2000 Hrs @ 105°C (minimum requirement)
Operating Temperature: -55°C to 105°C (full range coverage)
Polarization: Polar (aluminum electrolytic type)
AEC-Q200 Automotive Rating: Required for automotive applications

Mechanical Equivalence Criteria:

Package Type: Radial, Can - SMD (surface mount configuration)
Mounting Type: Surface Mount (SMD)
Physical Dimensions: 0.248" Dia (6.30 mm) and 0.240" Height (6.10 mm) maximum
Polarization: Polar (radial lead configuration)

Compliance Requirements:

RoHS3 Compliant
Moisture Sensitivity Level: 1 (Unlimited)

The substitute parts listed below meet all electrical and mechanical equivalence criteria and are qualified for direct replacement in the original application circuit.

Parameter Comparison

Parameter	AFK226M50D16B-F (Main)	AFK226M50D16T-F	EEE-FK1H220P	UUD1H220MCL1GS
Manufacturer	Cornell Dubilier Electronics	Cornell Dubilier Electronics	Panasonic Electronic Components	Nichicon
Capacitance	22 µF	22 µF	22 µF	22 µF
Voltage - Rated	50 V	50 V	50 V	50 V
Tolerance	±20%	±20%	±20%	±20%
ESR @ 100 kHz	880 mOhm	880 mOhm	880 mOhm	880 mOhm
Lifetime @ 105°C	2000 Hrs	2000 Hrs	2000 Hrs	2000 Hrs
Operating Temperature	-55 to 105°C	-55 to 105°C	-55 to 105°C	-55 to 105°C
Ripple Current @ 100 kHz	165 mA	165 mA	165 mA	165 mA
Size / Dimension	0.248" Dia (6.30 mm)	0.248" Dia (6.30 mm)	0.248" Dia (6.30 mm)	0.248" Dia (6.30 mm)
Height - Seated (Max)	0.240" (6.10 mm)	0.240" (6.10 mm)	0.240" (6.10 mm)	0.240" (6.10 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
AEC-Q200 Rated	Yes	Yes	Yes	Yes
RoHS3 Compliant	Yes	Yes	Yes	Yes
Product Status	Discontinued	Active	Active	Active
Packaging	Bulk	Tape & Reel (TR)	Cut Tape (CT) & Digi-Reel®	Tape & Reel (TR)

Engineering Selection Recommendations

Primary Substitute: AFK226M50D16T-F

The AFK226M50D16T-F is the direct equivalent from Cornell Dubilier Electronics, identical to the main part in all electrical and mechanical specifications. This part maintains the same manufacturer lineage and is currently in active production status with 1752 units in stock. The only difference is packaging format (Tape & Reel versus bulk), which does not affect electrical performance or board-level compatibility. This is the preferred substitute for direct replacement.

Secondary Substitutes: EEE-FK1H220P and UUD1H220MCL1GS

Both the Panasonic EEE-FK1H220P and Nichicon UUD1H220MCL1GS meet all electrical and mechanical equivalence criteria. Both parts are AEC-Q200 rated, RoHS3 compliant, and maintain identical capacitance, voltage rating, tolerance, lifetime, operating temperature range, and ripple current specifications. Both are in active production with substantial inventory availability (80636 and 12971 units respectively).

Minor mechanical variations exist in surface mount land size dimensions (Panasonic and Nichicon specify 0.260" L x 0.260" W versus the original 0.260" L x 0.307" W), which remain within standard PCB design tolerances for surface mount radial can packages and do not preclude direct substitution.

All three substitute parts are qualified for automotive applications and maintain compliance with automotive and industrial standards.

Frequently Asked Questions (FAQ)

Q: Can AFK226M50D16T-F be used as a direct replacement for AFK226M50D16B-F?

A: Yes. The AFK226M50D16T-F is electrically and mechanically equivalent to the AFK226M50D16B-F. Both parts share identical capacitance (22 µF), voltage rating (50 V), tolerance (±20%), ESR (880 mOhm @ 100 kHz), lifetime (2000 Hrs @ 105°C), operating temperature range (-55°C to 105°C), and physical dimensions. The only difference is packaging format (Tape & Reel versus bulk). No circuit modifications are required.

Q: What is the difference between the Panasonic EEE-FK1H220P and the original AFK226M50D16B-F?

A: The EEE-FK1H220P matches all critical electrical parameters: 22 µF capacitance, 50 V rating, ±20% tolerance, 2000 Hrs @ 105°C lifetime, and -55°C to 105°C operating temperature. Both are AEC-Q200 rated and RoHS3 compliant. The surface mount land size differs slightly (0.260" x 0.260" versus 0.260" x 0.307"), but this variation is within standard PCB design tolerances for surface mount radial can packages and does not affect compatibility.

Q: Is the Nichicon UUD1H220MCL1GS suitable for automotive applications?

A: Yes. The UUD1H220MCL1GS is AEC-Q200 rated and meets all automotive qualification requirements. It matches the original part in capacitance, voltage, tolerance, lifetime, and operating temperature specifications. The part is suitable for automotive bypass and decoupling applications.

Q: What is the significance of the packaging difference (Bulk versus Tape & Reel)?

A: Packaging format affects supply chain logistics and assembly line handling but does not impact electrical performance or board-level functionality. Bulk packaging (AFK226M50D16B-F) is suitable for manual or small-batch assembly. Tape & Reel packaging (AFK226M50D16T-F, UUD1H220MCL1GS) is optimized for automated pick-and-place assembly. The component itself is identical in both formats.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All substitute parts listed (AFK226M50D16T-F, EEE-FK1H220P, UUD1H220MCL1GS) are RoHS3 compliant and meet environmental and regulatory requirements equivalent to the original AFK226M50D16B-F.

Q: Can I mix different manufacturers' parts in the same circuit?

A: Yes. All substitute parts meet identical electrical specifications and are qualified to the same automotive standards (AEC-Q200). Mixing manufacturers in the same circuit does not create compatibility issues provided all parts meet the specified electrical and mechanical parameters.

Q: What is the Moisture Sensitivity Level (MSL) for these parts?

A: All parts, including the original and substitutes, have MSL 1 (Unlimited), indicating no moisture sensitivity restrictions during storage or handling.

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