EEE-FT1V331AL Equivalent & Substitute Parts

Part Overview

The Panasonic EEE-FT1V331AL is a 330 µF, 35 V aluminum electrolytic capacitor in surface mount radial can package, designed for automotive applications. This component is rated for 2000 hours at 105°C with an equivalent series resistance of 80 mOhm at 100 kHz. The part is active and ROHS3 compliant with AEC-Q200 automotive qualification.

Equivalent and substitute parts are identified to provide design flexibility, accommodate supply chain variations, and support component lifecycle management across active and legacy product lines.

Key Parameters

Parameter	Value	Unit
Capacitance	330	µF
Voltage Rating	35	V
Tolerance	±20	%
ESR @ 100 kHz	80	mOhm
Lifetime @ 105°C	2000	Hours
Operating Temperature Range	-55 to 105	°C
Ripple Current @ 100 kHz	850	mA
Case Size	0.315" Dia × 0.413" H (8.00 × 10.50 mm)	Inches / mm
Mounting Type	Surface Mount	—
Package	Radial, Can - SMD	—
Polarization	Polar	—
AEC-Q200 Rating	Yes	—
RoHS Status	ROHS3 Compliant	—
MSL Rating	1 (Unlimited)	—

Substitute Part Grouping Explanation

Substitution of the EEE-FT1V331AL is determined by strict equivalence across the following critical parameters:

Primary Equivalence Criteria:

Capacitance: 330 µF (exact match required)
Voltage Rating: 35 V (exact match required)
Tolerance: ±20% (exact match required)
Case Size: 0.315" Dia × 0.413" H maximum (8.00 × 10.50 mm)
Surface Mount Land Size: 0.327" L × 0.327" W (8.30 × 8.30 mm)
Mounting Type: Surface Mount
Package: Radial, Can - SMD
Polarization: Polar
Operating Temperature: -55°C to 105°C (minimum requirement)
AEC-Q200 Automotive Rating: Required
RoHS3 Compliance: Required
MSL Rating: 1 (Unlimited)

Secondary Performance Parameters (Allowable Variation):

ESR @ 100 kHz: 80 mOhm (primary specification) or 160 mOhm (acceptable for parametric equivalents)
Lifetime @ 105°C: 2000 hours (minimum) or 5000 hours (enhanced)
Ripple Current @ 100 kHz: 850 mA (primary) or 600 mA (reduced for higher ESR variants)
Ripple Current @ 120 Hz: 552.5 mA (primary) or 390-425 mA (reduced for higher ESR variants)

Substitute parts are grouped into three categories: direct manufacturer equivalents with identical electrical performance, parametric equivalents with acceptable performance trade-offs, and cross-manufacturer alternatives meeting all critical specifications.

Parameter Comparison

Part Number	Manufacturer	Series	Capacitance (µF)	Voltage (V)	ESR @ 100 kHz (mOhm)	Lifetime @ 105°C (Hrs)	Ripple Current @ 100 kHz (mA)	Case Size (mm)	Product Status	AEC-Q200	RoHS3
EEE-FT1V331AL	Panasonic	FT	330	35	80	2000	850	8.00 × 10.50	Active	Yes	Yes
EEE-FT1V331GP	Panasonic	FT	330	35	80	5000	850	8.00 × 10.50	Active	Yes	Yes
EEE-FT1V331AP	Panasonic	FT	330	35	80	2000	850	8.00 × 10.50	Active	Yes	Yes
EEE-FK1V331SL	Panasonic	FKS	330	35	160	2000	600	8.00 × 10.50	Not For New Designs	Yes	Yes
EEE-FN1V331UL	Panasonic	FN	330	35	160	2000	600	8.00 × 10.50	Active	Yes	Yes
EEE-FN1V331UP	Panasonic	FN	330	35	160	2000	600	8.00 × 10.50	Active	Yes	Yes
35TPV330M8X10.5	Rubycon	TPV	330	35	80	2000	850	8.00 × 10.50	Active	Yes	Yes
EMZS350ARA331MHA0G	Chemi-Con	Alchip™ MZS	330	35	80	2000	850	8.00 × 10.50	Active	Yes	Yes
EMZR350ARA331MHA0G	Chemi-Con	Alchip™ MZR	330	35	80	2000	850	8.00 × 10.30	Active	Yes	Yes
UCM1V331MNL1GS	Nichicon	UCM	330	35	80	2000	850	8.00 × 10.50	Active	Yes	Yes

Engineering Selection Recommendations

Direct Substitutes (Identical Electrical Performance):

The following parts provide direct substitution with identical electrical characteristics and are recommended for new designs:

EEE-FT1V331AP (Panasonic FT Series): Active product status, identical ESR and ripple current specifications, same case dimensions. Suitable for direct replacement in existing designs.
35TPV330M8X10.5 (Rubycon TPV Series): Active product status, matching ESR and ripple current performance, identical case size. Cross-manufacturer alternative with full automotive qualification.
EMZS350ARA331MHA0G (Chemi-Con Alchip™ MZS Series): Active product status, equivalent electrical performance, standard case height of 10.50 mm. Suitable for applications requiring cross-manufacturer sourcing.
UCM1V331MNL1GS (Nichicon UCM Series): Active product status, equivalent impedance specification of 80 mOhms, matching ripple current ratings. Automotive-qualified alternative.

Enhanced Performance Alternative:

EEE-FT1V331GP (Panasonic FT Series): Active product status with extended lifetime rating of 5000 hours at 105°C (versus 2000 hours for the primary part). Identical ESR and ripple current specifications. Recommended for applications requiring extended operational life or higher reliability margins.

Parametric Equivalents (Acceptable Performance Trade-offs):

The following parts meet all critical specifications but with modified electrical performance characteristics:

EEE-FN1V331UL (Panasonic FN Series): Active product status, higher ESR of 160 mOhm at 100 kHz and reduced ripple current of 600 mA at 100 kHz. Acceptable for applications where lower ripple current handling is not a limiting factor.
EEE-FN1V331UP (Panasonic FN Series): Active product status with identical electrical characteristics to EEE-FN1V331UL. Suitable for applications with relaxed ripple current requirements.

Legacy Product (Not Recommended for New Designs):

EEE-FK1V331SL (Panasonic FKS Series): Product status is "Not For New Designs." While electrically equivalent to the FN series variants, this part should not be selected for new circuit designs. Existing designs using this part may continue to source it during the transition period.

Height Consideration:

EMZR350ARA331MHA0G (Chemi-Con Alchip™ MZR Series): Seated height is 10.30 mm versus the standard 10.50 mm. This 0.20 mm reduction may be beneficial in space-constrained applications but requires verification of PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can EEE-FT1V331AL be replaced with EEE-FN1V331UL?

A: Yes. Both parts share identical capacitance (330 µF), voltage rating (35 V), tolerance (±20%), case size (8.00 × 10.50 mm), and automotive qualification (AEC-Q200). The EEE-FN1V331UL has a higher ESR of 160 mOhm at 100 kHz compared to 80 mOhm for the EEE-FT1V331AL, and reduced ripple current handling of 600 mA at 100 kHz versus 850 mA. Substitution is valid when the application does not require the higher ripple current performance of the original part.

Q: What is the difference between EEE-FT1V331AL and EEE-FT1V331GP?

A: Both parts are from Panasonic's FT series with identical electrical specifications: 330 µF, 35 V, 80 mOhm ESR at 100 kHz, and 850 mA ripple current at 100 kHz. The primary difference is the lifetime rating: EEE-FT1V331AL is rated for 2000 hours at 105°C, while EEE-FT1V331GP is rated for 5000 hours at 105°C. The extended lifetime of the GP variant provides greater operational margin and is suitable for applications requiring higher reliability.

Q: Are cross-manufacturer substitutes (Rubycon, Chemi-Con, Nichicon) fully compatible?

A: Yes. The cross-manufacturer parts 35TPV330M8X10.5 (Rubycon), EMZS350ARA331MHA0G (Chemi-Con), and UCM1V331MNL1GS (Nichicon) meet all critical specifications: 330 µF capacitance, 35 V voltage rating, identical case dimensions (8.00 × 10.50 mm), surface mount package, AEC-Q200 automotive qualification, and RoHS3 compliance. All three provide equivalent electrical performance with 80 mOhm ESR and 850 mA ripple current at 100 kHz. These parts are suitable for applications requiring multi-source qualification or supply chain diversification.

Q: Why is EEE-FK1V331SL marked "Not For New Designs"?

A: The EEE-FK1V331SL is a legacy product from Panasonic's FKS series. While it meets all critical specifications and remains electrically equivalent to active alternatives, the "Not For New Designs" status indicates that Panasonic is transitioning this product line. New circuit designs should select from active product alternatives such as EEE-FN1V331UL, EEE-FN1V331UP, or the FT series variants. Existing designs currently using this part may continue procurement during the transition period.

Q: What is the significance of the case height difference in EMZR350ARA331MHA0G?

A: The EMZR350ARA331MHA0G has a seated height of 10.30 mm compared to the standard 10.50 mm for most alternatives. This 0.20 mm reduction may provide benefit in space-constrained PCB layouts. However, the reduced height must be verified against the specific PCB design to ensure adequate clearance and no interference with adjacent components or solder joint formation. The electrical performance remains equivalent to other 80 mOhm ESR alternatives.

Q: Can parametric equivalents with 160 mOhm ESR be used in high-ripple-current applications?

A: No. The parametric equivalents EEE-FN1V331UL and EEE-FN1V331UP have a maximum ripple current rating of 600 mA at 100 kHz, compared to 850 mA for the primary part and direct substitutes. Applications requiring ripple current handling above 600 mA at 100 kHz must use parts with 80 mOhm ESR specifications: EEE-FT1V331AL, EEE-FT1V331AP, EEE-FT1V331GP, 35TPV330M8X10.5, EMZS350ARA331MHA0G, EMZR350ARA331MHA0G, or UCM1V331MNL1GS.

Q: Are all substitute parts REACH compliant?

A: The Panasonic parts (EEE-FT1V331AL, EEE-FT1V331GP, EEE-FT1V331AP, EEE-FK1V331SL, EEE-FN1V331UL, EEE-FN1V331UP), Rubycon 35TPV330M8X10.5, and Chemi-Con alternatives (EMZS350ARA331MHA0G, EMZR350ARA331MHA0G) are all REACH Unaffected. The Nichicon UCM1V331MNL1GS is REACH Affected. For applications requiring REACH Unaffected status, select from the Panasonic, Rubycon, or Chemi-Con alternatives.

Q: What is the MSL rating and why does it matter?

A: All listed parts have an MSL (Moisture Sensitivity Level) rating of 1, which indicates Unlimited shelf life without special moisture control requirements. This simplifies inventory management and reduces the need for specialized storage conditions or baking procedures prior to assembly. The MSL 1 rating applies uniformly across all substitute options.

Q: Can these parts be used in non-automotive applications?

A: Yes. While all parts carry AEC-Q200 automotive qualification, they are suitable for use in any application meeting the specified electrical and environmental requirements. The automotive qualification ensures compliance with stringent reliability and quality standards applicable to general industrial and consumer electronics as well.

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