AFK337M80P44T-F Equivalent & Substitute Parts

Part Overview

The AFK337M80P44T-F is a 330 µF, 80 V aluminum electrolytic capacitor in a radial, can-style surface mount package manufactured by Cornell Dubilier Electronics (CDE). This component is actively produced and rated for automotive and bypass/decoupling applications with AEC-Q200 certification. Identifying equivalent and substitute parts is essential for supply chain continuity, procurement flexibility, and design validation across different manufacturing sources while maintaining electrical and mechanical compatibility.

Substiute Parts

AFK337M80P44T-F

Cornell Dubilier Electronics (CDE)In Stock: 1079AFK337M80P44T-F Datasheet

Current PartRFQ

EEE-FK1K331AM

Panasonic Electronic ComponentsIn Stock: 1059EEE-FK1K331AM Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AFK337M80P44T-F is based on the following mandatory electrical and mechanical parameters:

Critical Parameters for Substitution:

• Capacitance: 330 µF (exact match required)
• Voltage Rating: 80 V (minimum; higher voltage acceptable with verification)
• Tolerance: ±20% (defines acceptable capacitance range)
• Package Type: Radial, Can - SMD (surface mount configuration)
• Mounting Type: Surface Mount (PCB footprint compatibility)
• Size / Dimension: 0.630" Dia (16.00mm) (mechanical fit)
• Height - Seated (Max): 0.669" (17.00mm) (clearance requirements)
• Operating Temperature Range: -55°C ~ 105°C (environmental compatibility)
• Lifetime @ Temperature: 5000 Hrs @ 105°C (reliability requirement)
• Polarization: Polar (circuit polarity compatibility)
• AEC-Q200 Rating: Required for automotive applications

The substitute part EEE-FK1K331AM from Panasonic Electronic Components matches all mandatory electrical and mechanical parameters, confirming direct substitutability in equivalent circuit roles.

Parameter Comparison

Engineering Selection Recommendations

Both the AFK337M80P44T-F and EEE-FK1K331AM are actively manufactured components with identical electrical specifications, mechanical dimensions, and compliance certifications. Both parts are ROHS3 compliant and AEC-Q200 rated, satisfying automotive qualification requirements. The EEE-FK1K331AM qualifies for high-temperature reflow applications, which may provide additional process flexibility. Selection between these parts should be based on supply availability, cost considerations, and established supplier relationships, as electrical and mechanical compatibility is confirmed across all provided parameters.

Frequently Asked Questions (FAQ)

Q: Can the EEE-FK1K331AM directly replace the AFK337M80P44T-F in an existing circuit? A: Yes. Both parts share identical capacitance (330 µF), voltage rating (80 V), tolerance (±20%), physical dimensions, and operating temperature range. PCB footprint compatibility and electrical performance are equivalent.

Q: Are the surface mount land sizes identical between these parts? A: The AFK337M80P44T-F specifies 0.669" L x 0.748" W (17.00mm x 19.00mm). The EEE-FK1K331AM specifies 0.669" L x 0.669" W (17.00mm x 17.00mm). The land size difference is minor; verify PCB footprint compatibility during design review.

Q: Do both parts meet automotive qualification standards? A: Yes. Both the AFK337M80P44T-F and EEE-FK1K331AM carry AEC-Q200 certification and are suitable for automotive applications including bypass and decoupling circuits.

Q: What determines whether a substitute part is acceptable? A: For 330 µF, 80 V aluminum electrolytic capacitors in radial, can-style SMD packages, substitution is determined by: matching capacitance and tolerance, rated voltage, physical dimensions (diameter and height), operating temperature range, lifetime rating, polarization type, and relevant compliance certifications (AEC-Q200 for automotive use).

Q: Is ESR (Equivalent Series Resistance) critical for substitution? A: ESR affects circuit performance but is not a blocking criterion for substitution when matched impedance is provided. The AFK337M80P44T-F specifies 170 mOhm @ 100kHz; the EEE-FK1K331AM specifies 170 mOhms impedance, confirming equivalent performance in this parameter.

Q: Can a higher voltage-rated capacitor (e.g., 100V) substitute for the 80V requirement? A: Higher voltage ratings are electrically compatible but alter physical size and may exceed PCB clearance constraints. Physical dimension verification is required before substitution with higher voltage parts.