ECS-F1VE104 Equivalent & Substitute Parts

Part Overview

The ECS-F1VE104 is a 0.1 µF conformal coated tantalum capacitor rated for 35 V with ±20% tolerance, designed for through-hole radial mounting. Manufactured by Panasonic Electronic Components as part of the EF series, this component is classified as obsolete. Due to its obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Substiute Parts

ECS-F1VE104

Panasonic Electronic ComponentsIn Stock: 937ECS-F1VE104 Datasheet

Current PartRFQ

T350A104K035AS

KEMETIn Stock: 2774T350A104K035AS Datasheet

DirectRFQ

TAP104K035SCS

KYOCERA AVXIn Stock: 3463TAP104K035SCS Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECS-F1VE104 is determined by the following critical parameters:

• Capacitance Value: 0.1 µF (exact match required)
• Voltage Rating: 35 V (minimum requirement; higher ratings are acceptable)
• Type: Conformal Coated Tantalum (technology match required)
• Mounting Type: Through Hole Radial (form factor match required)
• Operating Temperature Range: Minimum -55°C ~ 105°C (substitute must meet or exceed this range)

The substitute parts identified—T350A104K035AS (KEMET) and TAP104K035SCS (KYOCERA AVX)—satisfy all critical substitution criteria. Both parts maintain the same capacitance, voltage rating, conformal coating type, and through-hole radial mounting configuration. Tolerance differences (±10% vs. ±20%) and dimensional variations are within acceptable engineering margins for this application category.

Parameter Comparison

Engineering Selection Recommendations

T350A104K035AS (KEMET) is an active product with full inventory availability (2681 pcs). This part maintains electrical equivalence with the obsolete ECS-F1VE104 and offers improved tolerance (±10%). The extended operating temperature range (-55°C ~ 125°C) provides additional thermal margin. Physical dimensions are slightly larger, requiring PCB layout verification for space-constrained applications.

TAP104K035SCS (KYOCERA AVX) is an active product with superior inventory availability (3400 pcs) and achieves ROHS3 compliance, meeting modern regulatory requirements. This part provides the same electrical performance as the KEMET alternative with comparable dimensional characteristics. Lead spacing matches the original ECS-F1VE104 specification (0.098"), reducing PCB redesign requirements.

For new designs or production requiring regulatory compliance, TAP104K035SCS is the preferred selection. For direct replacement in existing assemblies with minimal PCB modification, either substitute is functionally equivalent.

Frequently Asked Questions (FAQ)

Q: Can T350A104K035AS or TAP104K035SCS be used as direct replacements for ECS-F1VE104?

A: Yes. Both substitute parts meet the critical electrical parameters: 0.1 µF capacitance, 35 V rating, conformal coated tantalum type, and through-hole radial mounting. Physical dimensions differ slightly; PCB layout verification is required for space-constrained designs.

Q: What is the significance of the tolerance difference (±20% vs. ±10%)?

A: The substitute parts offer tighter tolerance (±10%), which provides improved capacitance accuracy compared to the original ±20% specification. This is a performance improvement and does not affect substitution compatibility.

Q: How do the operating temperature ranges compare?

A: The ECS-F1VE104 operates from -55°C to 105°C. Both substitutes extend this range to -55°C to 125°C, providing additional thermal margin for demanding applications. This is a performance enhancement.

Q: Are there physical mounting differences?

A: The substitute parts are slightly larger in diameter (0.177" vs. 0.130") and height (7.00–7.10mm vs. 5.00mm). Lead spacing for TAP104K035SCS matches the original (0.098"), while T350A104K035AS uses 0.100" spacing. PCB footprint verification is necessary before implementation.

Q: Which substitute part should be selected for new designs?

A: TAP104K035SCS is recommended for new designs due to ROHS3 compliance and superior inventory availability. For existing production requiring minimal redesign, either substitute is acceptable based on PCB layout constraints.

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

A: ESR (Equivalent Series Resistance) is specified as 26 Ohm for both substitute parts. The original ECS-F1VE104 does not provide this specification. ESR affects high-frequency performance and ripple current handling; the specified 26 Ohm value is typical for this capacitor class and does not impact substitution compatibility.