AVRF337M16F24T-F 330µF 16V Aluminum Electrolytic Capacitor SMD

Part Overview

The AVRF337M16F24T-F is a 330µF, 16V aluminum electrolytic capacitor in surface mount radial, can package manufactured by Cornell Dubilier Electronics (CDE). This component operates across the temperature range of -55°C to 105°C with a 5000-hour lifetime rating at 105°C and is RoHS3 compliant. The part is currently obsolete, necessitating identification of active substitute components with equivalent or superior electrical and mechanical characteristics to maintain design compatibility and supply chain continuity.

Key Parameters

Parameter	Value
Capacitance	330 µF
Voltage Rating	16 V
Tolerance	±20%
ESR @ 100 kHz	160 mOhm
Lifetime @ 105°C	5000 Hrs
Operating Temperature Range	-55°C to 105°C
Ripple Current @ 100 kHz	600 mA
Case Diameter	0.315" (8.00 mm)
Max Height (Seated)	0.402" (10.20 mm)
Land Size	0.327" L × 0.327" W (8.30 mm × 8.30 mm)
Mount Type	Surface Mount
Package / Case	Radial, Can - SMD
RoHS Status	RoHS3 Compliant
Moisture Sensitivity	MSL 1 (Unlimited)

Substitute Part Grouping Explanation

Direct substitutes must maintain the same capacitance value (330µF), voltage rating (16V), tolerance (±20%), and physical footprint compatibility. The critical parameters determining substitutability are: case diameter (8.00 mm), maximum seated height (≤10.50 mm), land size dimensions (8.30 mm L × 8.30 mm W minimum), impedance at 100 kHz (160 mOhms nominal), ripple current capacity at 100 kHz (≥600 mA), operating temperature range (-55°C to 105°C), and package type (Radial, Can - SMD).

Parts are categorized as direct substitutes when all these parameters are maintained at or above specification. Upgrade substitutes are components with higher voltage ratings (25V or 35V) that provide superior voltage margin while maintaining all other critical parameters, enabling design improvement with mechanical and electrical compatibility.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage	ESR @ 100 kHz	Lifetime @ 105°C	Case Diameter	Max Height	Ripple Current @ 100 kHz	Impedance	Product Status	Certifications
AVRF337M16F24T-F	Cornell Dubilier Electronics	330 µF	16 V	160 mOhm	5000 Hrs	8.00 mm	10.20 mm	600 mA	160 mOhms	Obsolete	RoHS3
DIRECT SUBSTITUTES (16V Rating)
AFK337M16F24T-F	Cornell Dubilier Electronics	330 µF	16 V	160 mOhm	2000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
865060353008	Würth Elektronik	330 µF	16 V	—	5000 Hrs	8.00 mm	10.50 mm	550 mA	170 mOhms	Active	RoHS3
EEE-FK1C331GP	Panasonic Electronic Components	330 µF	16 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
UCD1C331MNL1GS	Nichicon	330 µF	16 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
UPGRADE SUBSTITUTES (25V Rating)
25TLV330M8X10.5	Rubycon	330 µF	25 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
865060453008	Würth Elektronik	330 µF	25 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	170 mOhms	Active	RoHS3
EEE-FK1E331GP	Panasonic Electronic Components	330 µF	25 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
UCD1E331MNL1GS	Nichicon	330 µF	25 V	—	5000 Hrs	8.00 mm	10.50 mm	600 mA	160 mOhms	Active	RoHS3, AEC-Q200
UUD1E331MNL1GS	Nichicon	330 µF	25 V	—	5000 Hrs	8.00 mm	10.50 mm	450 mA	170 mOhms	Active	RoHS3, AEC-Q200
UPGRADE SUBSTITUTE (35V Rating)
EEE-FT1V331GP	Panasonic Electronic Components	330 µF	35 V	80 mOhm	5000 Hrs	8.00 mm	10.50 mm	850 mA	—	Active	RoHS3, AEC-Q200

Engineering Selection Recommendations

Direct Substitutes at 16V Rating:

EEE-FK1C331GP (Panasonic) and UCD1C331MNL1GS (Nichicon) are optimal direct substitutes. Both are active components with 5000-hour lifetime ratings at 105°C, matching the original AVRF337M16F24T-F specification. Both carry AEC-Q200 automotive qualification, enabling deployment in automotive and industrial applications. EEE-FK1C331GP maintains identical 160 mOhm impedance; UCD1C331MNL1GS provides equivalent electrical performance with extended supply availability.

865060353008 (Würth Elektronik) is an alternative direct substitute with confirmed 5000-hour lifetime and general-purpose applications support. Impedance is 170 mOhms, marginally higher than the original specification.

AFK337M16F24T-F (Cornell Dubilier) is a direct manufacturer substitute but specifies 2000-hour lifetime at 105°C, which falls below the original 5000-hour rating. This part is suitable only for applications where the reduced lifetime is acceptable.

Upgrade Substitutes at 25V and 35V Ratings:

25V-rated substitutes (25TLV330M8X10.5, 865060453008, EEE-FK1E331GP, UCD1E331MNL1GS) and the 35V-rated EEE-FT1V331GP provide superior voltage margin while maintaining all mechanical compatibility and operating temperature specifications. These upgrades are electrically interchangeable in circuits designed for 16V operation, providing enhanced reliability through increased voltage headroom.

The EEE-FT1V331GP 35V variant offers additional benefits: 80 mOhm ESR (lower than original 160 mOhm), 850 mA ripple current capability (upgraded from 600 mA), and AEC-Q200 qualification. This variant is most suitable for designs requiring higher ripple current capacity or lower impedance characteristics.

Components with AEC-Q200 certification (all Panasonic FK and FT series, Nichicon UCD series, and Rubycon TLV series) are preferred for automotive and mission-critical applications.

Frequently Asked Questions (FAQ)

Q: Can I directly substitute the obsolete AVRF337M16F24T-F with any active part listed?

A: Parts with 16V ratings (AFK337M16F24T-F, 865060353008, EEE-FK1C331GP, UCD1C331MNL1GS) are direct electrical and mechanical substitutes. The 25V and 35V rated variants are also electrically compatible in 16V circuit positions, providing design margin. Verify lifetime requirements; AFK337M16F24T-F specifies 2000 hours versus the original 5000 hours.

Q: What are the critical dimensions for PCB land pattern compatibility?

A: The original part specifies 0.327" × 0.327" W (8.30 mm × 8.30 mm) land size. All substitute parts maintain 8.00 mm case diameter. Maximum seated heights range from 10.20 mm (original) to 10.50 mm (all substitutes). Verify PCB clearance allows the 10.50 mm maximum height for substitute parts; the additional 0.30 mm difference is typically accommodated in standard designs.

Q: Why would I choose a 25V or 35V rated part over a direct 16V substitute?

A: Higher voltage-rated parts reduce electrical stress on the capacitor dielectric, extending operational life and improving reliability margin. EEE-FT1V331GP at 35V rating also provides lower ESR (80 mOhm versus 160 mOhm) and higher ripple current capability (850 mA versus 600 mA), enabling improved high-frequency performance in bypass and decoupling applications.

Q: Which manufacturers provide AEC-Q200 certification?

A: Panasonic (FK and FT series), Nichicon (UCD series), and Rubycon (TLV series) all provide AEC-Q200 qualification. Würth Elektronik and the CDE AFK series do not carry this certification. AEC-Q200 is required for automotive-grade designs.

Q: Are there ripple current differences I should consider?

A: The original AVRF337M16F24T-F specifies 600 mA at 100 kHz. Most 16V direct substitutes meet or exceed this specification. Note: 865060353008 (Würth) specifies 550 mA; UUD1E331MNL1GS specifies 450 mA. For high-ripple-current applications, prioritize parts rated at or above 600 mA, or upgrade to EEE-FT1V331GP (850 mA).

Q: What is the impact of impedance differences on circuit performance?

A: Original and most substitute parts specify 160 mOhm impedance at 100 kHz. Würth Elektronik variants (865060353008, 865060453008) specify 170 mOhm; Nichicon UUD series specifies 170 mOhm. The 10 mOhm difference is negligible for general-purpose applications. Lower impedance (80 mOhm for EEE-FT1V331GP) improves transient response in power delivery and noise suppression circuits.

Q: Can I use Nichicon UCD1C331MNL1GS in place of the original part without board redesign?

A: Yes. UCD1C331MNL1GS is a direct substitute matching all mechanical and electrical parameters. It requires no PCB modifications. Highest inventory availability (24,400 pieces) provides excellent supply chain reliability for production volumes.

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