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IM02EB390K Equivalent & Substitute Parts
Part Overview
The IM02EB390K is a 39 µH unshielded molded inductor manufactured by Vishay Dale, rated for 125 mA with a maximum DC resistance of 3.6 Ohm. This axial through-hole component operates across -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts from active product lines are necessary for new designs and ongoing production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 39 µH |
| Tolerance | ±10% |
| Current Rating | 125 mA |
| DC Resistance (Max) | 3.6 Ohm |
| Q @ Frequency | 45 @ 2.5 MHz |
| Frequency - Self Resonant | 22 MHz |
| Operating Temperature Range | -55°C to 105°C |
| Mounting Type | Through Hole |
| Package / Case | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) |
| Material - Core | Ferrite |
| Shielding | Unshielded |
| Type | Molded |
Substitute Part Grouping Explanation
Substitute parts for the IM02EB390K are qualified based on matching the following critical parameters: inductance value (39 µH), tolerance (±10%), current rating (125 mA), DC resistance (3.6 Ohm max), Q factor (45 @ 2.5 MHz), self-resonant frequency (22 MHz), operating temperature range (-55°C to 105°C), mounting type (through hole), package type (axial), and physical dimensions (0.095" Dia x 0.250" L). All substitute parts are manufactured by API Delevan Inc. and maintain identical electrical and mechanical specifications to ensure direct functional equivalence.
Parameter Comparison
| Parameter | IM02EB390K (Vishay Dale) | 1025R-58K (API Delevan) | ER1025-58KM (API Delevan) | ER1025-58KP (API Delevan) | ER1025-58KR (API Delevan) |
|---|---|---|---|---|---|
| Inductance | 39 µH | 39 µH | 39 µH | 39 µH | 39 µH |
| Tolerance | ±10% | ±10% | ±10% | ±10% | ±10% |
| Current Rating (Amps) | 125 mA | 125 mA | 125 mA | 125 mA | 125 mA |
| DC Resistance (Max) | 3.6 Ohm | 3.6 Ohm | 3.6 Ohm | 3.6 Ohm | 3.6 Ohm |
| Q @ Frequency | 45 @ 2.5 MHz | 45 @ 2.5 MHz | 45 @ 2.5 MHz | 45 @ 2.5 MHz | 45 @ 2.5 MHz |
| Frequency - Self Resonant | 22 MHz | 22 MHz | 22 MHz | 22 MHz | 22 MHz |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C | -55°C ~ 105°C |
| Mounting Type | Through Hole | Through Hole | Through Hole | Through Hole | Through Hole |
| Package / Case | Axial | Axial | Axial | Axial | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) | 0.095" Dia x 0.250" L (2.41 mm x 6.35 mm) |
| Material - Core | Ferrite | Ferrite | Ferrite | Ferrite | Ferrite |
| Shielding | Unshielded | Unshielded | Unshielded | Unshielded | Unshielded |
| Product Status | Obsolete | Active | Active | Active | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | RoHS non-compliant | RoHS non-compliant | RoHS non-compliant |
| Packaging | - | Bulk | Tape & Reel (TR) | Tape & Reel (TR) | Tape & Reel (TR) |
Engineering Selection Recommendations
All four substitute parts from API Delevan Inc. provide direct electrical and mechanical equivalence to the IM02EB390K. Selection between substitutes depends on product status and compliance requirements:
1025R-58K is the primary substitute for applications requiring ROHS3 compliance and bulk packaging. This part maintains active product status and is suitable for new designs with RoHS requirements.
ER1025-58KM, ER1025-58KP, and ER1025-58KR are active alternatives available in tape and reel packaging. ER1025-58KR is qualified to MIL-PRF-39010/10 military specifications. These parts are RoHS non-compliant and should be selected only when military qualification or specific packaging requirements override RoHS compliance needs.
Frequently Asked Questions (FAQ)
Q: Can ER1025-58KR be used in place of IM02EB390K in RoHS-compliant applications? A: No. ER1025-58KR is RoHS non-compliant. For RoHS-compliant designs, use 1025R-58K, which carries ROHS3 compliance certification.
Q: What is the difference between 1025R-58K and the ER1025 series? A: 1025R-58K is supplied in bulk packaging and is ROHS3 compliant. The ER1025 series (ER1025-58KM, ER1025-58KP, ER1025-58KR) are supplied in tape and reel packaging and are RoHS non-compliant. All maintain identical electrical specifications.
Q: Is ER1025-58KR suitable for military applications? A: ER1025-58KR is qualified to MIL-PRF-39010/10 military specifications and is the appropriate selection for military-grade applications requiring this qualification.
Q: Are all substitute parts pin-compatible with IM02EB390K? A: Yes. All substitute parts share identical axial through-hole mounting, physical dimensions (0.095" Dia x 0.250" L), and electrical parameters, ensuring direct board-level compatibility.
Q: What packaging options are available for substitutes? A: 1025R-58K is available in bulk packaging. ER1025-58KM, ER1025-58KP, and ER1025-58KR are available in tape and reel (TR) packaging for automated assembly processes.
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