ECS-T1VX335R Equivalent & Substitute Parts

Part Overview

The ECS-T1VX335R is a 3.3 µF molded tantalum capacitor rated at 35 V with ±20% tolerance, manufactured by Panasonic Electronic Components in the TE series. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The part is housed in a 1411 (3528 Metric) surface mount package suitable for compact electronic assemblies requiring stable capacitance in the 3.3 µF range at moderate voltage levels.

Substiute Parts

ECS-T1VX335R

Panasonic Electronic ComponentsIn Stock: 1144ECS-T1VX335R Datasheet

Current PartRFQ

F931V335MBA

KYOCERA AVXIn Stock: 1960F931V335MBA Datasheet

DirectRFQ

TAJB335K035RNJ

KYOCERA AVXIn Stock: 10151TAJB335K035RNJ Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECS-T1VX335R are qualified based on the following critical parameters:

• Capacitance Value: Must be 3.3 µF (exact match required)
• Voltage Rating: Must be 35 V or higher (equal or greater)
• Package / Case: Must be 1411 (3528 Metric) to ensure PCB footprint compatibility
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must support -55°C ~ 125°C minimum
• Type: Molded Tantalum construction

The two substitute parts identified—F931V335MBA and TAJB335K035RNJ—both meet these core electrical and mechanical requirements. Differences in tolerance (±20% vs. ±10%), ESR specifications, and RoHS compliance status are secondary considerations that may influence selection based on application-specific requirements.

Parameter Comparison

Engineering Selection Recommendations

Both F931V335MBA and TAJB335K035RNJ are active production parts from KYOCERA AVX and serve as direct functional equivalents to the obsolete ECS-T1VX335R. Selection between these two substitutes should be based on the following factors:

F931V335MBA maintains the original ±20% tolerance specification and is available in Tape & Reel packaging. This part is suitable for applications where tolerance matching with the original design is prioritized and where the original tolerance band is acceptable.

TAJB335K035RNJ offers improved tolerance at ±10%, providing tighter capacitance control. This part is available in Cut Tape and Digi-Reel packaging. The tighter tolerance may be advantageous in applications requiring more precise capacitance values, though it represents a design enhancement rather than a direct replacement requirement.

Both substitute parts are ROHS3 compliant, addressing regulatory requirements that the original part does not meet. Height differences (1.90 mm original vs. 2.30 mm and 2.10 mm for substitutes) must be verified against PCB clearance constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can F931V335MBA and TAJB335K035RNJ be used interchangeably with ECS-T1VX335R?

A: Both parts meet the core electrical and mechanical requirements: 3.3 µF capacitance, 35 V rating, 1411 (3528 Metric) package, and surface mount configuration. PCB layout compatibility depends on verifying the seated height against available clearance, as the substitutes are slightly taller than the original part.

Q: What is the significance of the tolerance difference between ±20% and ±10%?

A: Tolerance defines the acceptable range of capacitance deviation from the nominal value. The original ECS-T1VX335R and F931V335MBA allow ±20% variation (2.64 µF to 3.96 µF), while TAJB335K035RNJ restricts this to ±10% (2.97 µF to 3.63 µF). Applications sensitive to capacitance precision may benefit from the tighter tolerance of TAJB335K035RNJ.

Q: Are there packaging differences between the substitute parts?

A: F931V335MBA is supplied in Tape & Reel format, while TAJB335K035RNJ is available in Cut Tape and Digi-Reel packaging. Both formats are standard for surface mount components; selection depends on assembly line requirements and order quantities.

Q: Why is RoHS compliance important for this substitution?

A: The original ECS-T1VX335R is RoHS non-compliant, while both substitutes are ROHS3 compliant. For applications subject to RoHS regulations or customer requirements, the compliant substitutes are necessary. For legacy systems without such requirements, compliance status does not affect electrical performance.

Q: What is the ESR specification, and why does it matter?

A: Equivalent Series Resistance (ESR) affects capacitor performance in high-frequency applications and ripple current handling. Both substitutes specify 4.6 Ohm ESR at 100 kHz. The original part does not provide this specification, but the substitutes' ESR values are consistent and suitable for general-purpose applications.

Q: Can these parts be used in high-temperature applications?

A: All three parts support the same operating temperature range of -55°C ~ 125°C. Lifetime specifications differ: F931V335MBA is rated for 2000 hours at 125°C, while the original and TAJB335K035RNJ do not provide lifetime data. For applications requiring extended operation at elevated temperatures, F931V335MBA provides documented reliability data.