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Bourns 8230-78 Equivalent & Substitute Parts
Part Overview
The Bourns 8230-78 is a 270 µH unshielded drum core wirewound inductor rated for 65 mA with a maximum DC resistance of 25 Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of suitable substitutes essential for ongoing production and maintenance applications. The active equivalent variant maintains identical electrical and mechanical specifications while offering improved compliance status and current availability.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 270 µH |
| Tolerance | ±10% |
| Current Rating | 65 mA |
| DC Resistance (Max) | 25 Ohm |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package | Axial |
| Operating Temperature Range | -55°C to 105°C |
| Size | 0.120" Dia x 0.300" L (3.05mm x 7.62mm) |
Substitute Part Grouping Explanation
Substitution of the Bourns 8230-78 is determined by strict equivalence across all critical electrical and mechanical parameters. The substitute part must maintain identical inductance value (270 µH), tolerance (±10%), current rating (65 mA), DC resistance (25 Ohm maximum), core material (ferrite), shielding configuration (unshielded), mounting type (through hole), package style (axial), operating temperature range (-55°C to 105°C), and physical dimensions (0.120" Dia x 0.300" L).
The Bourns 8230-78-RC qualifies as a direct substitute because it matches all specified parameters while offering active product status and improved regulatory compliance.
Parameter Comparison
| Parameter | 8230-78 (Main Part) | 8230-78-RC (Substitute) | Match Status |
|---|---|---|---|
| Inductance | 270 µH | 270 µH | Identical |
| Tolerance | ±10% | ±10% | Identical |
| Current Rating (Amps) | 65 mA | 65 mA | Identical |
| DC Resistance (Max) | 25 Ohm | 25 Ohm | Identical |
| Core Material | Ferrite | Ferrite | Identical |
| Shielding | Unshielded | Unshielded | Identical |
| Q @ Frequency | 30 @ 790kHz | 30 @ 790kHz | Identical |
| Frequency - Self Resonant | 8MHz | 8MHz | Identical |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 105°C | Identical |
| Mounting Type | Through Hole | Through Hole | Identical |
| Package / Case | Axial | Axial | Identical |
| Size / Dimension | 0.120" Dia x 0.300" L (3.05mm x 7.62mm) | 0.120" Dia x 0.300" L (3.05mm x 7.62mm) | Identical |
| Product Status | Obsolete | Active | Substitute is Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | Substitute offers improved compliance |
Engineering Selection Recommendations
The Bourns 8230-78-RC is the direct equivalent for the obsolete 8230-78. Selection of the 8230-78-RC is appropriate for all applications currently using the 8230-78, as it provides identical electrical performance and mechanical compatibility. The substitute part offers the additional advantage of active product status, ensuring continued availability and supply chain reliability. The 8230-78-RC also meets ROHS3 compliance requirements, whereas the original part does not, making it suitable for applications with regulatory compliance mandates.
Frequently Asked Questions (FAQ)
Q: Can the 8230-78-RC be used as a direct replacement for the 8230-78?
A: Yes. The 8230-78-RC is electrically and mechanically identical to the 8230-78 across all specified parameters, including inductance, current rating, DC resistance, core material, shielding, operating temperature range, and physical dimensions. It is a direct substitute suitable for all applications.
Q: What is the primary reason to transition from the 8230-78 to the 8230-78-RC?
A: The 8230-78 is classified as obsolete, while the 8230-78-RC maintains active product status. This ensures continued availability, supply chain stability, and access to current manufacturing batches. Additionally, the 8230-78-RC is ROHS3 compliant, whereas the original part is not.
Q: Are there any differences in packaging between these parts?
A: The 8230-78 is supplied in standard packaging, while the 8230-78-RC is supplied in bulk packaging. Both parts are identical in component form and fit the same through-hole axial footprint.
Q: Will the 8230-78-RC work in existing PCB designs without modification?
A: Yes. The 8230-78-RC maintains the same axial through-hole package, physical dimensions (0.120" Dia x 0.300" L), and electrical specifications as the 8230-78. No PCB design changes are required.
Q: What are the critical parameters that define substitution eligibility?
A: Substitution is determined by matching inductance (270 µH), tolerance (±10%), current rating (65 mA), DC resistance (25 Ohm maximum), core material (ferrite), shielding (unshielded), mounting type (through hole), package style (axial), operating temperature range (-55°C to 105°C), and physical dimensions (0.120" Dia x 0.300" L).
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