ECS-F1AE476K Equivalent & Substitute Parts

Part Overview

The ECS-F1AE476K is a 47 µF conformal coated tantalum capacitor rated at 10 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 obsolete status and limited availability relative to active alternatives, identifying equivalent substitute parts is essential for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Capacitance	47 µF
Voltage Rating	10 V
Tolerance	±20%
Type	Conformal Coated Tantalum
Mounting Type	Through Hole Radial
Operating Temperature Range	-55°C ~ 105°C
Package / Case	Radial

Substitute Part Grouping Explanation

Substitution for the ECS-F1AE476K is determined by strict equivalence in the following parameters:

Capacitance value: 47 µF (exact match required)
Voltage rating: 10 V (exact match required)
Type: Conformal coated tantalum capacitor
Mounting: Through hole radial configuration
Package case: Radial

The substitute parts identified—T350H476K010AS (KEMET) and TAP476K010SCS (KYOCERA AVX)—meet all core electrical and mechanical requirements. Both are active products with improved tolerance specifications (±10% versus ±20%) and extended operating temperature ranges (-55°C ~ 125°C versus -55°C ~ 105°C), providing enhanced performance margins in equivalent applications.

Parameter Comparison

Parameter	ECS-F1AE476K (Panasonic)	T350H476K010AS (KEMET)	TAP476K010SCS (KYOCERA AVX)
Capacitance	47 µF	47 µF	47 µF
Voltage Rating	10 V	10 V	10 V
Tolerance	±20%	±10%	±10%
Type	Conformal Coated	Conformal Coated	Conformal Coated
ESR	Not specified	1.7 Ohm	1.7 Ohm
Operating Temperature	-55°C ~ 105°C	-55°C ~ 125°C	-55°C ~ 125°C
Mounting Type	Through Hole	Through Hole	Through Hole
Package / Case	Radial	Radial	Radial
Size / Dimension (Dia)	0.217" (5.50mm)	0.299" (7.60mm)	0.256" (6.50mm)
Height - Seated (Max)	0.374" (9.50mm)	0.402" (10.20mm)	0.394" (10.00mm)
Lead Spacing	0.098" (2.50mm)	0.100" (2.54mm)	0.098" (2.50mm)
Product Status	Obsolete	Active	Active
RoHS Status	Non-compliant	Non-compliant	ROHS3 Compliant

Engineering Selection Recommendations

Both substitute parts are functionally equivalent to the ECS-F1AE476K for applications requiring 47 µF at 10 V in radial through-hole configuration.

T350H476K010AS (KEMET T350 Series): Active product status ensures ongoing availability and supply chain stability. Improved tolerance (±10%) and extended temperature range (-55°C ~ 125°C) provide enhanced performance margins. RoHS non-compliant status matches the original part. Larger physical dimensions (0.299" diameter, 0.402" height) require PCB layout verification for space-constrained applications.

TAP476K010SCS (KYOCERA AVX TAP Series): Active product with ROHS3 compliance offers regulatory advantage for new designs or updated production. Improved tolerance (±10%) and extended temperature range (-55°C ~ 125°C) match KEMET offering. Intermediate physical dimensions (0.256" diameter, 0.394" height) provide better fit for compact layouts compared to KEMET alternative. Lead spacing of 0.098" matches the original part exactly.

Selection between substitutes depends on PCB layout constraints and regulatory requirements. TAP476K010SCS is preferred for space-limited designs and RoHS3-compliant applications. T350H476K010AS is suitable where KEMET supply chain preference exists.

Frequently Asked Questions (FAQ)

Q: Can T350H476K010AS or TAP476K010SCS be used as direct replacements for ECS-F1AE476K?

A: Both parts are electrically and mechanically equivalent for applications requiring 47 µF at 10 V radial through-hole tantalum capacitors. Physical dimensions differ slightly; PCB layout verification is required before implementation.

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

A: The substitute parts feature tighter tolerance specifications (±10%), providing more precise capacitance values within a narrower range. This represents an improvement over the original ±20% tolerance and does not create compatibility issues in applications designed for the original part.

Q: Do the extended operating temperature ranges (-55°C ~ 125°C) affect compatibility?

A: The extended range is a performance enhancement. Applications operating within the original range (-55°C ~ 105°C) remain fully compatible. The additional temperature margin provides design flexibility for future applications.

Q: Are there physical size constraints I should consider?

A: Yes. The ECS-F1AE476K measures 0.217" diameter and 0.374" height. T350H476K010AS is larger (0.299" diameter, 0.402" height), while TAP476K010SCS is intermediate (0.256" diameter, 0.394" height). Verify PCB footprint and clearance before substitution.

Q: What is the difference in lead spacing?

A: ECS-F1AE476K and TAP476K010SCS both use 0.098" (2.50mm) lead spacing. T350H476K010AS uses 0.100" (2.54mm) spacing. Standard 0.1" pitch PCB layouts accommodate both; verify existing board design for compatibility.

Q: Which substitute is recommended for new designs?

A: Selection depends on regulatory and supply chain requirements. TAP476K010SCS offers ROHS3 compliance and intermediate physical dimensions suitable for compact layouts. T350H476K010AS provides KEMET supply chain continuity with established availability.

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