ECJ-3FF1H105Z Equivalent & Substitute Parts

Part Overview

The ECJ-3FF1H105Z is a 1 µF ceramic capacitor rated at 50V with Y5V temperature coefficient in 1206 (3216 Metric) surface mount package, manufactured by Panasonic Electronic Components. This part is classified as obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. The ECJ-3FF series remains widely used in general-purpose filtering and decoupling circuits where Y5V temperature stability and compact form factor are required.

Substiute Parts

ECJ-3FF1H105Z

Panasonic Electronic ComponentsIn Stock: 1044ECJ-3FF1H105Z Datasheet

Current PartRFQ

CC1206ZRY5V9BB105

YAGEOIn Stock: 46623CC1206ZRY5V9BB105 Datasheet

DirectRFQ

CL31F105ZBFNNNE

Samsung Electro-MechanicsIn Stock: 5233CL31F105ZBFNNNE Datasheet

DirectRFQ

CL31F105ZBFNNNF

Samsung Electro-MechanicsIn Stock: 787CL31F105ZBFNNNF Datasheet

DirectRFQ

GRM31CR71H105KA61L

Murata ElectronicsIn Stock: 200858GRM31CR71H105KA61L Datasheet

DirectRFQ

KGM31NV51H105ZU

KYOCERA AVXIn Stock: 136158KGM31NV51H105ZU Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the ECJ-3FF1H105Z is determined by strict equivalence across the following parameters:

• Capacitance Value: 1 µF (exact match required)
• Voltage Rating: 50V (minimum acceptable)
• Package / Case: 1206 (3216 Metric) (physical and electrical compatibility)
• Mounting Type: Surface Mount, MLCC (assembly compatibility)
• Moisture Sensitivity Level: 1 (Unlimited) (handling and storage compatibility)

Substitute parts are grouped into two categories based on temperature coefficient:

Category A - Y5V Temperature Coefficient (Direct Functional Equivalents)

• CC1206ZRY5V9BB105 (YAGEO)
• CL31F105ZBFNNNF (Samsung Electro-Mechanics)
• CL31F105ZBFNNNE (Samsung Electro-Mechanics)
• KGM31NV51H105ZU (KYOCERA AVX)

Category B - X7R Temperature Coefficient (Extended Operating Range)

• GRM31CR71H105KA61L (Murata Electronics)

The X7R variant offers superior temperature stability (-55°C ~ 125°C vs. -30°C ~ 85°C) and tighter tolerance (±10% vs. -20%, +80%), making it suitable for applications requiring enhanced performance characteristics within the same physical footprint.

Parameter Comparison

Engineering Selection Recommendations

For Direct Replacement (Y5V Category)

All four Y5V substitutes—CC1206ZRY5V9BB105, CL31F105ZBFNNNF, CL31F105ZBFNNNE, and KGM31NV51H105ZU—provide functional equivalence to the ECJ-3FF1H105Z. Selection among these options should be based on:

• Availability: KGM31NV51H105ZU (KYOCERA AVX) offers the highest inventory (136,063 pcs), followed by CC1206ZRY5V9BB105 (YAGEO, 46,554 pcs).
• Compliance: All active substitutes are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.
• Packaging Format: CL31F105ZBFNNNE is available in Cut Tape (CT) & Digi-Reel® format; CL31F105ZBFNNNF and KGM31NV51H105ZU are supplied in Tape & Reel (TR); CC1206ZRY5V9BB105 is supplied in Tape & Reel (TR).

For Enhanced Performance (X7R Category)

The GRM31CR71H105KA61L (Murata Electronics) offers superior temperature stability and tighter tolerance specifications. This part is suitable for applications requiring extended operating temperature range (-55°C ~ 125°C) and improved capacitance stability (±10% vs. -20%, +80%). Murata's part carries the highest inventory availability (200,754 pcs) among all substitutes. Physical compatibility is maintained within the 1206 package, though thickness increases to 0.071" (1.80mm) compared to the original 0.049" (1.25mm).

Frequently Asked Questions (FAQ)

Q: Can I use GRM31CR71H105KA61L as a direct replacement for ECJ-3FF1H105Z?

A: GRM31CR71H105KA61L is physically compatible in the 1206 package and electrically compatible for general-purpose applications. However, it uses X7R temperature coefficient instead of Y5V, resulting in different capacitance behavior across temperature ranges. The X7R variant provides tighter tolerance (±10%) and extended operating temperature (-55°C ~ 125°C). Use this part only if your application can accommodate these performance differences or if enhanced stability is beneficial.

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

A: Y5V temperature coefficient allows capacitance variation of -20% to +80% across the operating temperature range (-30°C ~ 85°C), typical for general-purpose filtering applications. X7R provides ±10% capacitance variation across a wider temperature range (-55°C ~ 125°C), offering superior stability for precision circuits. Selection depends on application requirements for capacitance stability and operating temperature range.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All active substitute parts (CC1206ZRY5V9BB105, CL31F105ZBFNNNF, CL31F105ZBFNNNE, KGM31NV51H105ZU, and GRM31CR71H105KA61L) are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards.

Q: Does thickness variation affect PCB assembly?

A: Thickness varies among substitutes: CC1206ZRY5V9BB105 (0.037"), KGM31NV51H105ZU (0.050"), CL31F105ZBFNNNE and CL31F105ZBFNNNF (0.055"), GRM31CR71H105KA61L (0.071"), and the original ECJ-3FF1H105Z (0.049"). For most applications, these variations are within standard PCB assembly tolerances. Verify clearance constraints in high-density layouts or applications with height restrictions.

Q: Which substitute offers the best availability?

A: GRM31CR71H105KA61L (Murata) has the highest inventory at 200,754 pcs. Among Y5V equivalents, KGM31NV51H105ZU (KYOCERA AVX) offers 136,063 pcs, and CC1206ZRY5V9BB105 (YAGEO) offers 46,554 pcs.

Q: Can I mix different substitute parts in the same design?

A: Yes, provided all parts meet the electrical requirements of your circuit. However, using a single part number across production is recommended for consistency, traceability, and supply chain management.