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ELJ-FC100JF Equivalent & Substitute Parts
Part Overview
The Panasonic ELJ-FC100JF is a 10 µH unshielded wirewound inductor rated for 80 mA with a maximum DC resistance of 3.7Ohm in a 1008 (2520 Metric) surface mount package. This part is classified as obsolete, making substitute components necessary for new designs and ongoing production support. Equivalent and substitute parts listed below maintain the core electrical specifications while offering improved availability, extended temperature ranges, or enhanced current ratings.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 10 µH |
| Tolerance | ±5% |
| Current Rating | 80 mA |
| DC Resistance (Max) | 3.7Ohm |
| Package / Case | 1008 (2520 Metric) |
| Mounting Type | Surface Mount |
| Shielding | Unshielded |
| Operating Temperature Range | -20°C ~ 85°C |
Substitute Part Grouping Explanation
Substitution eligibility is determined by the following mandatory parameters:
- Inductance value: 10 µH (exact match required)
- Tolerance: ±5% (exact match required)
- Package / Case: 1008 (2520 Metric) (exact match required)
- Mounting Type: Surface Mount (exact match required)
- Shielding: Unshielded (exact match required)
- Current Rating: Equal to or greater than 80 mA
- DC Resistance: Equal to or less than 3.7Ohm
- Operating Temperature Range: Must encompass or extend the original -20°C ~ 85°C range
All substitute parts listed below satisfy these criteria. Parts are grouped by substitution classification: Direct Manufacturer equivalents (identical electrical performance within tolerance) and Similar parts (enhanced specifications within the same package footprint).
Parameter Comparison
| Part Number | Manufacturer | Inductance | Tolerance | Current Rating (mA) | DCR Max (Ohm) | Package | Operating Temp (°C) | Product Status |
|---|---|---|---|---|---|---|---|---|
| ELJ-FC100JF | Panasonic Electronic Components | 10 µH | ±5% | 80 | 3.7 | 1008 (2520 Metric) | -20 ~ 85 | Obsolete |
| IMC1008ER100J | Vishay Dale | 10 µH | ±5% | 150 | 4.6 | 1008 (2520 Metric) | -40 ~ 125 | Active |
| NLV25T-100J-EF | TDK Corporation | 10 µH | ±5% | 155 | 4.6 | 1008 (2520 Metric) | -40 ~ 105 | Active |
| NLV25T-100J-EFD | TDK Corporation | 10 µH | ±5% | 155 | 4.6 | 1008 (2520 Metric) | -40 ~ 105 | Active |
| NLV25T-100J-PF | TDK Corporation | 10 µH | ±5% | 155 | 4.6 | 1008 (2520 Metric) | -40 ~ 105 | Not For New Designs |
| 1008-103J | API Delevan Inc. | 10 µH | ±5% | 245 | 2.5 | Nonstandard | -55 ~ 125 | Active |
Engineering Selection Recommendations
Direct Manufacturer Equivalents (Recommended for Substitution):
IMC1008ER100J (Vishay Dale), NLV25T-100J-EF (TDK Corporation), and NLV25T-100J-EFD (TDK Corporation) are active production parts that meet or exceed all electrical parameters of the ELJ-FC100JF. These parts maintain the 1008 (2520 Metric) package footprint, 10 µH inductance, and ±5% tolerance. All three offer improved current ratings (150–155 mA versus 80 mA) and lower DC resistance (4.6Ohm versus 3.7Ohm). IMC1008ER100J and both NLV25T variants are ROHS3 compliant. NLV25T-100J-EFD carries AEC-Q200 automotive qualification and is available in the highest quantity (11,260 pcs).
Not Recommended for New Designs:
NLV25T-100J-PF is classified as "Not For New Designs" and should be avoided for new product development, despite meeting electrical specifications.
Similar Part (Package Deviation):
1008-103J (API Delevan Inc.) offers superior current rating (245 mA) and lower DC resistance (2.5Ohm) but uses a nonstandard package (2.66mm x 2.41mm versus 2.50mm x 2.00mm). This part is suitable only if PCB layout accommodates the larger footprint.
Frequently Asked Questions (FAQ)
Q: Can I use NLV25T-100J-EFD as a direct replacement for ELJ-FC100JF?
A: Yes. NLV25T-100J-EFD maintains identical inductance (10 µH), tolerance (±5%), and package (1008 / 2520 Metric). It exceeds the current rating requirement (155 mA versus 80 mA) and provides lower DC resistance (4.6Ohm versus 3.7Ohm). The part is active production with AEC-Q200 qualification.
Q: What is the difference between NLV25T-100J-EF and NLV25T-100J-EFD?
A: Both parts are electrically identical (10 µH, 155 mA, 4.6Ohm DCR). The difference is packaging: NLV25T-100J-EF is supplied in Cut Tape (CT) & Digi-Reel format, while NLV25T-100J-EFD is supplied in Tape & Reel (TR). NLV25T-100J-EFD has significantly higher inventory availability (11,260 pcs versus 2,400 pcs).
Q: Why is 1008-103J listed as a similar part rather than a direct substitute?
A: 1008-103J uses a nonstandard package (2.66mm x 2.41mm) that deviates from the 1008 (2520 Metric) standard (2.50mm x 2.00mm). While electrically superior, physical footprint differences require PCB layout verification before use.
Q: Is IMC1008ER100J suitable for automotive applications?
A: IMC1008ER100J is ROHS3 compliant but does not carry AEC-Q200 automotive qualification. For automotive applications, NLV25T-100J-EFD is the recommended choice due to its AEC-Q200 rating.
Q: What is the operating temperature difference between the original part and substitutes?
A: The ELJ-FC100JF operates from -20°C to 85°C. All recommended substitutes extend this range to -40°C to 105°C or -40°C to 125°C, providing improved thermal margin for demanding applications.
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