ECS-F1VE155K Equivalent & Substitute Parts

Part Overview

The ECS-F1VE155K is a 1.5 µF conformal coated tantalum capacitor rated for 35 V with radial through-hole mounting. Manufactured by Panasonic Electronic Components as part of the EF series, this component is classified as obsolete. Due to its discontinued status, equivalent substitute parts from active manufacturers are necessary for ongoing production, maintenance, and design continuity.

Substiute Parts

ECS-F1VE155K

Panasonic Electronic ComponentsIn Stock: 816ECS-F1VE155K Datasheet

Current PartRFQ

T350B155K035AS

KEMETIn Stock: 965T350B155K035AS Datasheet

DirectRFQ

TAP155K035SCS

KYOCERA AVXIn Stock: 1894TAP155K035SCS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-F1VE155K is determined by strict equivalence across the following electrical and mechanical parameters:

• Capacitance value: 1.5 µF (exact match required)
• Voltage rating: 35 V (minimum requirement)
• Type: Conformal coated tantalum capacitor
• Mounting: Through-hole radial configuration
• Lead spacing and package compatibility with radial footprint

The substitute parts T350B155K035AS (KEMET) and TAP155K035SCS (KYOCERA AVX) meet these core substitution criteria. Both are active production components with identical capacitance and voltage ratings. Tolerance differences (±10% vs. ±20%) and minor dimensional variations are within acceptable substitution parameters for this component category.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are functionally equivalent to the ECS-F1VE155K based on electrical specifications. Selection between them depends on compliance and availability requirements:

T350B155K035AS (KEMET) is an active production component with improved tolerance (±10%) and extended operating temperature range (-55°C ~ 125°C). It maintains RoHS non-compliant status consistent with the original part.

TAP155K035SCS (KYOCERA AVX) is an active production component with ROHS3 compliance, making it suitable for applications requiring RoHS3 certification. It also features ±10% tolerance and extended operating temperature range. Lead spacing matches the original part exactly at 0.098" (2.50mm).

Dimensional differences exist in package diameter and height. PCB layout verification is necessary to confirm mechanical fit, particularly for applications with space constraints.

Frequently Asked Questions (FAQ)

Q: Can T350B155K035AS or TAP155K035SCS be used as direct replacements for ECS-F1VE155K?

A: Both parts are electrically equivalent based on capacitance (1.5 µF), voltage rating (35 V), and conformal coated tantalum construction. Physical dimensions differ; PCB footprint compatibility must be verified before substitution.

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

A: The original ECS-F1VE155K has ±20% tolerance, while both substitutes have ±10% tolerance. This means substitute parts have tighter capacitance accuracy. For applications sensitive to capacitance variation, the improved tolerance of substitute parts is beneficial.

Q: Are there RoHS compliance differences?

A: The ECS-F1VE155K and T350B155K035AS are RoHS non-compliant. TAP155K035SCS is ROHS3 compliant. For applications requiring RoHS3 certification, TAP155K035SCS is the appropriate selection.

Q: Do the substitute parts fit the same PCB footprint?

A: Lead spacing differs slightly. ECS-F1VE155K and TAP155K035SCS both use 0.098" (2.50mm) lead spacing. T350B155K035AS uses 0.100" (2.54mm) lead spacing. Package diameter and height also differ. Physical verification against PCB layout is required.

Q: What is the operating temperature difference?

A: The original part operates from -55°C to 105°C. Both substitute parts extend the upper limit to 125°C, providing improved thermal performance for high-temperature applications.