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ECJ-3VF1C684Z Equivalent & Substitute Parts
Part Overview
The ECJ-3VF1C684Z is a 0.68 µF ceramic capacitor rated at 16V 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 Y5V temperature coefficient and general-purpose classification indicate suitability for standard filtering and coupling applications across industrial and consumer electronics.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Capacitance | 0.68 µF |
| Tolerance | -20%, +80% |
| Voltage - Rated | 16V |
| Temperature Coefficient | Y5V (F) |
| Operating Temperature Range | -30°C ~ 85°C |
| Mounting Type | Surface Mount, MLCC |
| Package / Case | 1206 (3216 Metric) |
| Physical Dimensions | 0.126" L x 0.063" W (3.20mm x 1.60mm) |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution for the ECJ-3VF1C684Z is determined by strict equivalence across the following parameters:
- Capacitance Value: 0.68 µF (exact match required)
- Tolerance: -20%, +80% (exact match required)
- Voltage Rating: 16V (exact match required)
- Temperature Coefficient: Y5V (F) (exact match required)
- Operating Temperature Range: -30°C ~ 85°C (exact match required)
- Package / Case: 1206 (3216 Metric) (exact match required)
- Mounting Type: Surface Mount, MLCC (exact match required)
- Moisture Sensitivity Level: 1 (Unlimited) (exact match required)
The identified substitute parts meet all electrical and mechanical parameters specified above. Physical dimension variations within manufacturing tolerances do not affect functional equivalence.
Parameter Comparison
| Parameter | ECJ-3VF1C684Z (Panasonic) | 1206YG684ZAT2A (KYOCERA AVX) | C1206C684Z4VAC7800 (KEMET) |
|---|---|---|---|
| Capacitance | 0.68 µF | 0.68 µF | 0.68 µF |
| Tolerance | -20%, +80% | -20%, +80% | -20%, +80% |
| Voltage - Rated | 16V | 16V | 16V |
| Temperature Coefficient | Y5V (F) | Y5V (F) | Y5V (F) |
| Operating Temperature | -30°C ~ 85°C | -30°C ~ 85°C | -30°C ~ 85°C |
| Mounting Type | Surface Mount, MLCC | Surface Mount, MLCC | Surface Mount, MLCC |
| Package / Case | 1206 (3216 Metric) | 1206 (3216 Metric) | 1206 (3216 Metric) |
| Size / Dimension | 0.126" L x 0.063" W (3.20mm x 1.60mm) | 0.126" L x 0.063" W (3.20mm x 1.60mm) | 0.126" L x 0.063" W (3.20mm x 1.60mm) |
| Thickness (Max) | 0.037" (0.95mm) | 0.037" (0.94mm) | 0.035" (0.88mm) |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
Both substitute parts provide functional equivalence to the ECJ-3VF1C684Z across all specified electrical and mechanical parameters. Selection between alternatives should be based on the following factors:
1206YG684ZAT2A (KYOCERA AVX): Active product status with ROHS3 compliance and REACH unaffected designation. Packaging available in Tape & Reel format. Inventory availability: 922 Pcs.
C1206C684Z4VAC7800 (KEMET): Active product status with ROHS3 compliance and REACH unaffected designation. Packaging available in Tape & Reel format. Inventory availability: 876 Pcs. Thickness specification of 0.035" (0.88mm) represents the most compact profile among available options.
Both parts are suitable for direct replacement in applications previously using the obsolete ECJ-3VF1C684Z. The transition from RoHS non-compliant to ROHS3 compliant alternatives aligns with current regulatory requirements.
Frequently Asked Questions (FAQ)
Q: Can 1206YG684ZAT2A or C1206C684Z4VAC7800 be used as direct replacements for ECJ-3VF1C684Z?
A: Yes. Both parts meet all specified electrical parameters (0.68 µF, 16V, Y5V, -20%/+80% tolerance, -30°C ~ 85°C operating range) and mechanical requirements (1206 package, surface mount MLCC, MSL 1). Physical dimension variations are within acceptable manufacturing tolerances.
Q: What is the significance of the thickness differences between substitute parts?
A: The ECJ-3VF1C684Z specifies 0.037" (0.95mm) maximum thickness, while C1206C684Z4VAC7800 specifies 0.035" (0.88mm) and 1206YG684ZAT2A specifies 0.037" (0.94mm). All values remain within the 1206 package specification and do not affect functional performance or PCB assembly compatibility.
Q: Why is the original ECJ-3VF1C684Z classified as obsolete?
A: Obsolescence indicates the part is no longer manufactured by Panasonic Electronic Components. Active alternatives from KYOCERA AVX and KEMET provide equivalent functionality and are recommended for new designs and ongoing production requirements.
Q: Are there compliance differences between the original part and substitutes?
A: The ECJ-3VF1C684Z is RoHS non-compliant, while both substitute parts (1206YG684ZAT2A and C1206C684Z4VAC7800) are ROHS3 compliant and REACH unaffected. This represents an improvement in regulatory alignment for applications subject to current environmental standards.
Q: What packaging formats are available for the substitute parts?
A: Both 1206YG684ZAT2A and C1206C684Z4VAC7800 are available in Tape & Reel (TR) packaging format, suitable for automated assembly processes.
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