AFK336M25D16B-F Equivalent & Substitute Parts

Part Overview

The AFK336M25D16B-F is a 33 µF, 25 V aluminum electrolytic capacitor manufactured by Cornell Dubilier Electronics (CDE) in surface mount configuration. This component is designed for automotive bypass and decoupling applications with AEC-Q200 compliance. The part is currently discontinued at DiGi Electronics; equivalent substitutes with identical electrical specifications are available from multiple manufacturers to maintain supply chain continuity and design flexibility.

Substiute Parts

AFK336M25D16B-F

Cornell Dubilier Electronics (CDE)In Stock: 826AFK336M25D16B-F Datasheet

Current PartRFQ

AFK336M25C12T-F

Cornell Dubilier Electronics (CDE)In Stock: 9443AFK336M25C12T-F Datasheet

SimilarRFQ

EEE-FK1E330AP

Panasonic Electronic ComponentsIn Stock: 2567EEE-FK1E330AP Datasheet

DirectRFQ

EEE-FK1E330P

Panasonic Electronic ComponentsIn Stock: 29096EEE-FK1E330P Datasheet

DirectRFQ

EMZA250ARA330MF61G

Chemi-ConIn Stock: 1050EMZA250ARA330MF61G Datasheet

DirectRFQ

UCL1E330MCL1GS

NichiconIn Stock: 20458UCL1E330MCL1GS Datasheet

DirectRFQ

UUD1E330MCL1GS

NichiconIn Stock: 3079UUD1E330MCL1GS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the AFK336M25D16B-F is determined by matching the following mandatory electrical parameters:

• Capacitance: 33 µF (identical)
• Voltage Rating: 25 V (identical)
• Tolerance: ±20% (identical)
• Lifetime Rating: 2000 Hrs @ 105°C (identical)
• Operating Temperature Range: -55°C to 105°C (identical)
• Package Configuration: Radial, Can - SMD with compatible land pattern dimensions
• Polarization: Polar

Secondary electrical parameters including ESR (Equivalent Series Resistance), ripple current ratings, and impedance vary among substitutes but remain within acceptable ranges for general bypass and decoupling applications. Physical footprints are compatible across all listed substitutes with surface mount land sizes matching or exceeding the original specification.

Parameter Comparison

Engineering Selection Recommendations

Direct Pin-Compatible Substitutes (Preferred):

• EEE-FK1E330AP (Panasonic) and EEE-FK1E330P (Panasonic) provide electrical and dimensional equivalence to the original AFK336M25D16B-F with AEC-Q200 certification and active product status, making them the primary alternatives for automotive applications.
• EMZA250ARA330MF61G (Chemi-Con) offers identical electrical specifications and physical dimensions with AEC-Q200 rating and active availability.
• UUD1E330MCL1GS (Nichicon) maintains dimensional compatibility and AEC-Q200 compliance for automotive use cases.

Size-Reduced Alternative:

• AFK336M25C12T-F (Cornell Dubilier Electronics) offers the same electrical capacity from the original manufacturer with a smaller physical footprint (5.00 mm diameter vs. 6.30 mm). This option is applicable only if PCB space permits reduced footprint and higher ESR (700 mOhm) is acceptable for the application.

General-Purpose Alternative:

• UCL1E330MCL1GS (Nichicon) functions electrically as an equivalent but lacks AEC-Q200 certification and carries a different REACH status. This substitute is suitable for non-automotive general-purpose bypass and decoupling applications only.

Frequently Asked Questions (FAQ)

Q: Can I use these substitutes interchangeably with the AFK336M25D16B-F?

A: All listed substitutes match the core electrical parameters (33 µF, 25 V, ±20% tolerance, 2000 Hrs @ 105°C). For automotive applications, use only parts with AEC-Q200 certification: EEE-FK1E330AP, EEE-FK1E330P, EMZA250ARA330MF61G, or UUD1E330MCL1GS. The Nichicon UCL1E330MCL1GS lacks automotive certification and is suitable only for general-purpose applications.

Q: What is the impact of differing ESR and ripple current ratings?

A: ESR and ripple current values define the thermal and frequency response characteristics of each substitute. The original part specifies 360 mOhm ESR with 240 mA ripple current at 100 kHz. Substitutes with lower impedance (e.g., UCL1E330MCL1GS at 260 mOhms) provide improved high-frequency performance. Parts with higher ESR (e.g., AFK336M25C12T-F at 700 mOhms) are suitable for lower-frequency applications. Selection depends on circuit ripple current requirements at operating frequency.

Q: Are there physical compatibility concerns with the smaller AFK336M25C12T-F?

A: The AFK336M25C12T-F uses a 5.00 mm diameter case versus the standard 6.30 mm diameter. The PCB land pattern is also reduced (5.30 mm × 6.50 mm vs. 6.60 mm × 7.80 mm for the original). This substitute requires board redesign to place the component using the smaller footprint. Use only if PCB layout permits downsizing.

Q: What is the difference between the two Panasonic EEE-FK series parts?

A: EEE-FK1E330AP and EEE-FK1E330P are both active Panasonic products with identical electrical and physical specifications (33 µF, 25 V, 6.30 mm × 6.10 mm, AEC-Q200). Both are surface mount Radial, Can configuration rated for 2000 Hrs @ 105°C. Part designation differences reflect internal product line variants; both are functionally equivalent for this application.

Q: Is REACH compliance status relevant for component selection?

A: The original AFK336M25D16B-F carries "REACH Unaffected" status. Most substitutes maintain the same designation. The UUD1E330MCL1GS is marked "REACH Affected," meaning it contains SVHC (Substances of Very High Concern) substances but remains compliant with current regulations. Application requirements dictate whether this designation impacts selection; it does not prevent use in compliant applications.

Q: Can I use UCL1E330MCL1GS in an automotive circuit?

A: No. UCL1E330MCL1GS lacks AEC-Q200 certification, which is a mandatory requirement for automotive-grade components. The part is qualified for general-purpose applications only. For automotive use cases, select from AEC-Q200 certified alternatives: EEE-FK1E330AP, EEE-FK1E330P, EMZA250ARA330MF61G, or UUD1E330MCL1GS.