AFK337M2AR44B-F Equivalent & Substitute Parts

Part Overview

The AFK337M2AR44B-F is a 330 µF, 100 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 from active product lines. Substitute parts must maintain identical electrical specifications and mechanical compatibility to ensure direct replacement in existing designs.

Substiute Parts

AFK337M2AR44B-F

Cornell Dubilier Electronics (CDE)In Stock: 1070AFK337M2AR44B-F Datasheet

Current PartRFQ

EEE-FK2A331AM

Panasonic Electronic ComponentsIn Stock: 866EEE-FK2A331AM Datasheet

DirectRFQ

EEV-FK2A331M

Panasonic Electronic ComponentsIn Stock: 2037EEV-FK2A331M Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the AFK337M2AR44B-F is determined by strict equivalence across the following parameters:

Electrical Specifications (Non-negotiable):

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 100 V (exact match required)
• Tolerance: ±20% (exact match required)
• Lifetime: 5000 Hrs @ 105°C (exact match required)
• Operating Temperature: -55°C ~ 105°C (exact match required)
• Polarization: Polar (exact match required)

Mechanical Specifications (Non-negotiable):

• Package: Radial, Can - SMD (exact match required)
• Mounting: Surface Mount (exact match required)
• Physical Dimensions: 0.709" Dia (18.00mm) × 0.669" H (17.00mm) (exact match required)

Compliance & Ratings (Non-negotiable):

• AEC-Q200 Automotive Qualification (required for automotive applications)
• RoHS3 Compliance (required for regulatory adherence)

The identified substitute parts meet all critical parameters and maintain full functional and physical compatibility with the original AFK337M2AR44B-F specification.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitute: EEV-FK2A331M (Panasonic)

The EEV-FK2A331M is the preferred substitute for the discontinued AFK337M2AR44B-F. This part maintains complete electrical and mechanical equivalence across all critical parameters. The EEV-FK2A331M carries active product status with Panasonic, ensuring long-term availability and supply chain stability. AEC-Q200 qualification and RoHS3 compliance are maintained. Current inventory of 2000 pieces provides immediate availability for production requirements.

Secondary Substitute: EEE-FK2A331AM (Panasonic)

The EEE-FK2A331AM provides an alternative substitute with identical electrical specifications and physical dimensions. This part is also active in Panasonic's product line and carries AEC-Q200 qualification. The EEE-FK2A331AM is specified for high-temperature reflow applications in addition to standard automotive use. Inventory of 853 pieces supports near-term procurement needs.

Substitution Basis:

Both Panasonic alternatives satisfy the mandatory equivalence criteria:

• Identical capacitance, voltage, and tolerance specifications
• Matching physical dimensions and surface mount package configuration
• Equivalent ripple current ratings at both low and high frequencies
• Identical operating temperature range and lifetime specification
• Full automotive qualification and regulatory compliance

The discontinuation of the AFK337M2AR44B-F does not affect the technical suitability of these substitutes for existing applications. Direct PCB footprint compatibility is maintained through identical case dimensions and land pattern requirements.

Frequently Asked Questions (FAQ)

Q: Can EEV-FK2A331M or EEE-FK2A331AM be used as direct replacements for AFK337M2AR44B-F without PCB modification?

A: Yes. Both Panasonic substitutes maintain identical physical dimensions (0.709" diameter × 0.669" height) and surface mount package configuration. PCB footprint compatibility is preserved without design changes.

Q: What is the difference between EEV-FK2A331M and EEE-FK2A331AM?

A: Both parts meet the core substitution criteria with identical electrical specifications. The EEE-FK2A331AM is specified for high-temperature reflow applications. The EEV-FK2A331M has higher current inventory availability (2000 vs. 853 pieces). Selection between these two should be based on application-specific reflow requirements and procurement timeline.

Q: Are the Panasonic substitutes qualified for automotive applications?

A: Yes. Both EEV-FK2A331M and EEE-FK2A331AM carry AEC-Q200 qualification, meeting automotive industry reliability and qualification standards equivalent to the original AFK337M2AR44B-F.

Q: Do the substitute parts meet RoHS3 compliance requirements?

A: Yes. Both Panasonic alternatives are RoHS3 compliant, maintaining regulatory compliance with the original part specification.

Q: What is the ESR (Equivalent Series Resistance) of the substitute parts?

A: The ESR specification is not provided in the substitute part data. The original AFK337M2AR44B-F specifies 150 mOhm @ 100 kHz. The Panasonic substitutes list impedance at 153 mOhms, which is within acceptable tolerance for this component category.

Q: Can these substitutes handle the same ripple current as the original part?

A: Yes. Both Panasonic substitutes maintain identical ripple current specifications: 687.8 mA @ 120 Hz and 917 mA @ 100 kHz, matching the AFK337M2AR44B-F performance.

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

A: Both EEV-FK2A331M and EEE-FK2A331AM have MSL 1 (Unlimited), identical to the original AFK337M2AR44B-F, requiring no special moisture handling during storage or assembly.

Q: Are there any packaging differences between the original and substitute parts?

A: The original AFK337M2AR44B-F packaging format is not specified in the provided data. The Panasonic substitutes are supplied in Tape & Reel (TR) packaging, which is standard for surface mount component distribution and compatible with automated assembly equipment.