ECJ-2FF1E105Z Equivalent & Substitute Parts

Part Overview

The ECJ-2FF1E105Z is a 1 µF ceramic capacitor rated at 25V with Y5V temperature coefficient in 0805 (2012 Metric) surface mount package, manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The component is suitable for general-purpose applications requiring stable capacitance across the -30°C to 85°C operating temperature range.

Key Parameters

Parameter	Value
Capacitance	1 µF
Tolerance	-20%, +80%
Voltage Rating	25V
Temperature Coefficient	Y5V (F)
Operating Temperature Range	-30°C ~ 85°C
Package / Case	0805 (2012 Metric)
Mounting Type	Surface Mount, MLCC
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitute parts for the ECJ-2FF1E105Z are classified into two categories based on electrical and mechanical compatibility:

Direct Substitutes (Equivalent Rating): Parts maintaining identical electrical specifications—1 µF capacitance, -20%/+80% tolerance, 25V voltage rating, Y5V temperature coefficient, and 0805 package form factor. These parts are interchangeable without circuit redesign and include active production alternatives from multiple manufacturers.

Upgrade Substitutes (Higher Voltage Rating): Parts with identical capacitance, tolerance, temperature coefficient, and package, but rated at 50V instead of 25V. These provide enhanced voltage margin and are suitable for applications where the original 25V rating is adequate but higher reliability is desired.

Substitution eligibility is determined by:

Capacitance value (1 µF)
Tolerance range (-20%, +80%)
Temperature coefficient (Y5V)
Package form factor (0805 / 2012 Metric)
Operating temperature range (-30°C ~ 85°C)
Moisture sensitivity level (MSL 1)

Parameter Comparison

Manufacturer Part Number	Manufacturer	Capacitance	Voltage Rating	Tolerance	Temperature Coefficient	Package	Product Status	RoHS Status
ECJ-2FF1E105Z	Panasonic Electronic Components	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Obsolete	—
C0805Y5V250-105ZNE	Venkel	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CC0805ZPY5V8BB105	YAGEO	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CC0805ZRY5V8BB105	YAGEO	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CL21F105ZAFNNNE	Samsung Electro-Mechanics	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CL21F105ZAFNNNF	Samsung Electro-Mechanics	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CL21F105ZAFNNNG	Samsung Electro-Mechanics	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
KGM21AV51E105ZL	KYOCERA AVX	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
KGM21AV51E105ZU	KYOCERA AVX	1 µF	25V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
C0805C105Z5VAC7800	KEMET	1 µF	50V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant
CC0805ZKY5V9BB105	YAGEO	1 µF	50V	-20%, +80%	Y5V (F)	0805 (2012 Metric)	Active	ROHS3 Compliant

Engineering Selection Recommendations

Direct Substitutes (25V Rating): All direct substitute parts listed maintain active production status and ROHS3 compliance. Selection among C0805Y5V250-105ZNE (Venkel), CC0805ZPY5V8BB105 or CC0805ZRY5V8BB105 (YAGEO), CL21F105ZAFNNNE/ZAFNNNF/ZAFNNNG (Samsung Electro-Mechanics), and KGM21AV51E105ZL or KGM21AV51E105ZU (KYOCERA AVX) depends on procurement availability and supply chain requirements. All parts meet identical electrical and mechanical specifications.

Upgrade Substitutes (50V Rating): C0805C105Z5VAC7800 (KEMET) and CC0805ZKY5V9BB105 (YAGEO) provide higher voltage margin while maintaining all other electrical and mechanical parameters. These are suitable for applications where the 25V rating is adequate but enhanced reliability is preferred. Both are active production parts with ROHS3 compliance.

Frequently Asked Questions (FAQ)

Q: Can I use a 50V rated capacitor in place of the 25V ECJ-2FF1E105Z?

A: Yes. The 50V upgrade substitutes (C0805C105Z5VAC7800 and CC0805ZKY5V9BB105) are electrically and mechanically compatible. They maintain identical capacitance, tolerance, temperature coefficient, and package form factor while providing higher voltage rating. No circuit modification is required.

Q: Are all direct substitutes truly interchangeable?

A: Yes. All direct substitute parts (C0805Y5V250-105ZNE, CC0805ZPY5V8BB105, CC0805ZRY5V8BB105, CL21F105ZAFNNNE, CL21F105ZAFNNNF, CL21F105ZAFNNNG, KGM21AV51E105ZL, and KGM21AV51E105ZU) meet identical electrical specifications and 0805 package requirements. Selection is based on availability and supply chain preference.

Q: What is the significance of the Y5V temperature coefficient?

A: Y5V indicates the capacitor exhibits capacitance variation of -82% to +22% across the -30°C to +85°C operating temperature range. This is a standard specification for general-purpose ceramic capacitors. All substitute parts maintain this same temperature coefficient.

Q: Does package thickness variation affect substitutability?

A: No. While individual parts may have slight thickness variations (ranging from 0.033" to 0.058" maximum), all parts conform to the 0805 (2012 Metric) package standard and are suitable for standard PCB assembly processes. Verify specific thickness requirements only if your application has space constraints.

Q: Are all substitute parts ROHS3 compliant?

A: All active production substitute parts listed are ROHS3 compliant. The original ECJ-2FF1E105Z (obsolete) does not specify RoHS status. If RoHS compliance is a requirement, select from the active production alternatives.

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