ECS-T1EX225R Equivalent & Substitute Parts

Part Overview

The ECS-T1EX225R is a 2.2 µF molded tantalum capacitor rated at 25 V with ±20% tolerance, manufactured by Panasonic Electronic Components in the TE series. This component is classified as obsolete, making substitute parts necessary for new designs and ongoing production requirements. The part is housed in a 1411 (3528 Metric) surface mount package with general purpose applications across -55°C to 125°C operating temperature range.

Substiute Parts

ECS-T1EX225R

Panasonic Electronic ComponentsIn Stock: 999ECS-T1EX225R Datasheet

Current PartRFQ

F931V225MBA

KYOCERA AVXIn Stock: 10312F931V225MBA Datasheet

DirectRFQ

293D225X9025B2TE3

Vishay SpragueIn Stock: 10258293D225X9025B2TE3 Datasheet

SimilarRFQ

TAJB225K035RNJ

KYOCERA AVXIn Stock: 35367TAJB225K035RNJ Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ECS-T1EX225R are qualified based on the following electrical and mechanical parameters:

• Capacitance: Must be 2.2 µF (exact match required)
• Package / Case: Must be 1411 (3528 Metric) for mechanical compatibility
• Mounting Type: Must be Surface Mount
• Operating Temperature Range: Must support -55°C ~ 125°C minimum
• Type: Must be Molded Tantalum
• Voltage Rating: Must be equal to or greater than 25 V
• Tolerance: May vary from the original ±20% specification

Three substitute parts meet these criteria: F931V225MBA (KYOCERA AVX), 293D225X9025B2TE3 (Vishay Sprague), and TAJB225K035RNJ (KYOCERA AVX). All three maintain identical capacitance, package, and mounting specifications while offering improved product status and compliance certifications.

Parameter Comparison

Engineering Selection Recommendations

All three substitute parts are active products with ROHS3 compliance and REACH unaffected status, addressing the obsolescence and compliance limitations of the ECS-T1EX225R.

F931V225MBA offers a 35 V voltage rating with ±20% tolerance matching the original specification tolerance. This part provides the closest electrical characteristic alignment while delivering improved product status and compliance certifications.

293D225X9025B2TE3 maintains the original 25 V voltage rating with tighter ±10% tolerance. This part is suitable for applications where the exact voltage rating is critical and tolerance improvement is beneficial.

TAJB225K035RNJ provides a 35 V voltage rating with ±10% tolerance and is available in higher inventory quantities. This part offers both voltage margin and tolerance improvement for applications requiring enhanced performance specifications.

All substitute parts maintain identical capacitance, package dimensions, and operating temperature range. Height differences are within typical PCB assembly tolerances. Selection should be based on specific application voltage requirements and tolerance specifications.

Frequently Asked Questions (FAQ)

Q: Can F931V225MBA replace ECS-T1EX225R directly?

A: Yes. Both parts share identical capacitance (2.2 µF), package (1411/3528 Metric), mounting type (Surface Mount), and operating temperature range (-55°C ~ 125°C). The F931V225MBA has a higher voltage rating (35 V vs 25 V) and maintains the same ±20% tolerance. The height difference (2.30mm vs 1.90mm) is within standard PCB assembly tolerances.

Q: What is the difference between the three substitute parts?

A: The primary differences are voltage rating and tolerance. F931V225MBA and TAJB225K035RNJ both offer 35 V ratings, while 293D225X9025B2TE3 maintains the original 25 V rating. F931V225MBA and 293D225X9025B2TE3 match the original ±20% tolerance, while TAJB225K035RNJ offers tighter ±10% tolerance. ESR specifications vary slightly (3.8Ohm to 4.2Ohm).

Q: Are all substitute parts RoHS compliant?

A: Yes. All three substitute parts are ROHS3 compliant, addressing the RoHS non-compliance of the original ECS-T1EX225R. All are also REACH unaffected.

Q: Will the height difference affect PCB assembly?

A: The substitute parts have maximum seated heights of 2.10mm to 2.30mm compared to the original 1.90mm. These differences are within standard PCB assembly tolerances and should not affect placement or soldering processes.

Q: Which substitute part should I select for new designs?

A: Selection depends on application requirements. For voltage margin with matching tolerance, select F931V225MBA. For exact voltage rating with improved tolerance, select 293D225X9025B2TE3. For maximum voltage margin with improved tolerance and highest availability, select TAJB225K035RNJ.

Q: Are these parts pin-compatible?

A: Yes. All substitute parts use the same 1411 (3528 Metric) surface mount package with identical footprint and pin configuration.