ECJ-0EF1E103Z Equivalent & Substitute Parts

Part Overview

The ECJ-0EF1E103Z is a 10000 pF ceramic capacitor manufactured by Panasonic Electronic Components with a rated voltage of 25V and Y5V temperature coefficient, packaged in 0402 (1005 Metric) surface mount form factor. This part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support and production continuity. The part is suitable for general-purpose applications requiring compact ceramic capacitance in surface mount configurations.

Substiute Parts

ECJ-0EF1E103Z

Panasonic Electronic ComponentsIn Stock: 848ECJ-0EF1E103Z Datasheet

Current PartRFQ

04025G103ZAT2A

KYOCERA AVXIn Stock: 3566904025G103ZAT2A Datasheet

UpgradeRFQ

CC0402ZRY5V9BB103

YAGEOIn Stock: 13962CC0402ZRY5V9BB103 Datasheet

UpgradeRFQ

C0402C103K3RAC7867

KEMETIn Stock: 33733C0402C103K3RAC7867 Datasheet

SimilarRFQ

04023G103ZAT2A

KYOCERA AVXIn Stock: 88904023G103ZAT2A Datasheet

Parametric EquivalentRFQ

CC0402ZRY5V8BB103

YAGEOIn Stock: 10133CC0402ZRY5V8BB103 Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the ECJ-0EF1E103Z is determined by strict adherence to the following electrical and mechanical parameters:

Primary Substitution Criteria:

• Capacitance value: 10000 pF (exact match required)
• Package / Case: 0402 (1005 Metric) (exact match required)
• Mounting Type: Surface Mount, MLCC (exact match required)
• Temperature Coefficient: Y5V (F) (for parametric equivalents)
• Tolerance: -20%, +80% (for parametric equivalents)
• Operating Temperature Range: -30°C ~ 85°C (minimum requirement)
• Voltage - Rated: 25V or higher (voltage derating allowed)

Substitute Categories:

Upgrade Substitutes (Higher voltage rating, same temperature coefficient): Parts with 50V rating provide enhanced voltage margin while maintaining identical capacitance, tolerance, temperature coefficient, and package specifications.

Parametric Equivalents (Identical electrical specifications): Parts with matching capacitance, tolerance, voltage rating, and temperature coefficient across different manufacturers.

Similar Substitutes (Different temperature coefficient): Parts with matching capacitance and package but different temperature coefficient (X7R vs Y5V) and tolerance characteristics, suitable only where temperature stability requirements differ.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Obsolete Part Mitigation):

The parametric equivalents 04023G103ZAT2A (KYOCERA AVX) and CC0402ZRY5V8BB103 (YAGEO) provide identical electrical specifications to the ECJ-0EF1E103Z. Both are active products with ROHS3 compliance and REACH unaffected status, ensuring long-term availability and regulatory compliance. Selection between these two should be based on supply chain preference and inventory availability.

For Enhanced Voltage Margin:

The upgrade substitutes 04025G103ZAT2A (KYOCERA AVX) and CC0402ZRY5V9BB103 (YAGEO) maintain all electrical and mechanical specifications while providing 50V rated voltage instead of 25V. These parts are suitable for applications where increased voltage derating improves circuit reliability. Both are active products with ROHS3 compliance.

For Alternative Temperature Performance:

The C0402C103K3RAC7867 (KEMET) offers X7R temperature coefficient with ±10% tolerance and extended operating range (-55°C ~ 125°C). This part is suitable only for applications where the wider temperature stability of X7R is required and the different tolerance specification is acceptable. The part is active with ROHS3 compliance.

All recommended substitutes maintain identical package dimensions (0402 / 1005 Metric) and surface mount mounting type, ensuring mechanical compatibility without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can I use the 50V rated parts (04025G103ZAT2A or CC0402ZRY5V9BB103) as direct replacements for the 25V ECJ-0EF1E103Z?

A: Yes. Higher voltage-rated capacitors are electrically compatible with lower voltage applications. The 50V parts provide additional voltage margin and are mechanically and electrically identical in all other parameters (capacitance, tolerance, temperature coefficient, package).

Q: What is the difference between the Y5V and X7R temperature coefficients?

A: Y5V has a temperature coefficient range of -82% to +22% of nominal capacitance across the operating temperature range, with operating temperature of -30°C ~ 85°C. X7R has a tighter temperature coefficient of ±15% across -55°C ~ 125°C. Y5V is suitable for general-purpose applications; X7R is required for applications demanding stable capacitance across wider temperature ranges.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All active substitute parts listed (04025G103ZAT2A, CC0402ZRY5V9BB103, 04023G103ZAT2A, CC0402ZRY5V8BB103, and C0402C103K3RAC7867) are ROHS3 compliant. The original ECJ-0EF1E103Z does not specify RoHS status due to its obsolete classification.

Q: Can I mix different manufacturers' parts in the same production batch?

A: Yes. All substitute parts meet identical electrical and mechanical specifications for their respective categories. However, manufacturing process variations between suppliers may result in minor performance differences. Qualification testing is recommended if parts from different manufacturers are used interchangeably in the same design.

Q: What is the significance of MSL 1 (Unlimited) rating?

A: MSL 1 indicates unlimited shelf life without moisture baking requirements. All listed parts carry this rating, meaning they can be stored and handled without special moisture control procedures.

Q: Why is the tolerance specification different for the KEMET part (±10% vs -20%, +80%)?

A: The KEMET C0402C103K3RAC7867 uses X7R dielectric material, which inherently provides tighter tolerance (±10%) compared to Y5V dielectric (asymmetrical -20%, +80%). This is a material characteristic and not a quality difference. Selection depends on whether the tighter tolerance is required for the application.