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Bourns 9230-84 470µH Axial Inductor Equivalent & Substitute Parts
Part Overview
The Bourns 9230-84 is a 470 µH unshielded molded inductor rated for 50 mA with a maximum DC resistance of 42Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing production and maintenance applications. The part operates across a temperature range of -55°C to 125°C and features ferrite core construction with ±10% inductance tolerance.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 470 µH |
| Current Rating | 50 mA |
| DC Resistance (Max) | 42Ohm |
| Tolerance | ±10% |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Mounting Type | Through Hole Axial |
| Operating Temperature | -55°C ~ 125°C |
| Q @ Frequency | 30 @ 790kHz |
| Self Resonant Frequency | 6MHz |
| Package / Case | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L (2.41mm x 6.35mm) |
Substitute Part Grouping Explanation
Substitution eligibility for the Bourns 9230-84 is determined by the following critical parameters:
- Inductance value: 470 µH (exact match required)
- DC Resistance: 42Ohm maximum (exact match required)
- Tolerance: ±10% (exact match required)
- Core material: Ferrite (exact match required)
- Shielding: Unshielded (exact match required)
- Mounting type: Through hole axial (exact match required)
- Physical dimensions: 0.095" Dia x 0.250" L (exact match required)
- Q @ 790kHz: 30 (exact match required)
- Self resonant frequency: 6MHz (exact match required)
Parts are classified into two categories:
Direct Equivalent: Bourns 9230-84-RC maintains identical electrical and mechanical specifications with active product status and improved compliance.
Similar Substitute: API Delevan 1025-84K shares core electrical parameters but operates with a reduced current rating of 36 mA (versus 50 mA) and a narrower operating temperature range of -55°C to 105°C (versus -55°C to 125°C).
Parameter Comparison
| Parameter | Bourns 9230-84 | Bourns 9230-84-RC | API Delevan 1025-84K |
|---|---|---|---|
| Inductance | 470 µH | 470 µH | 470 µH |
| Current Rating (Amps) | 50 mA | 50 mA | 36 mA |
| DC Resistance (Max) | 42Ohm | 42Ohm | 42Ohm |
| Tolerance | ±10% | ±10% | ±10% |
| Core Material | Ferrite | Ferrite | Ferrite |
| Shielding | Unshielded | Unshielded | Unshielded |
| Q @ 790kHz | 30 | 30 | 30 |
| Self Resonant Frequency | 6MHz | 6MHz | 6MHz |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 125°C | -55°C ~ 105°C |
| Mounting Type | Through Hole | Through Hole | Through Hole |
| Package / Case | Axial | Axial | Axial |
| Size / Dimension | 0.095" Dia x 0.250" L | 0.095" Dia x 0.250" L | 0.095" Dia x 0.250" L |
| Product Status | Obsolete | Active | Active |
| RoHS Status | RoHS non-compliant | ROHS3 Compliant | RoHS non-compliant |
| Packaging | - | Bulk | Cut Tape (CT) |
Engineering Selection Recommendations
Bourns 9230-84-RC is the primary direct equivalent for the obsolete Bourns 9230-84. This part maintains identical electrical specifications and physical dimensions while offering active product status and ROHS3 compliance, providing improved regulatory alignment for new designs and ongoing production.
API Delevan 1025-84K serves as a similar substitute when the primary equivalent is unavailable. This part meets the core inductance, DC resistance, tolerance, and frequency specifications. However, the reduced current rating of 36 mA (compared to 50 mA) and narrower operating temperature range of -55°C to 105°C (compared to -55°C to 125°C) require circuit-level evaluation to confirm suitability for the intended application. This part is qualified to military specification MIL-PRF-M15305 and supplied in cut tape packaging.
Frequently Asked Questions (FAQ)
Q: Can the Bourns 9230-84-RC be used as a direct replacement for the Bourns 9230-84?
A: Yes. The 9230-84-RC is a direct equivalent with identical inductance (470 µH), current rating (50 mA), DC resistance (42Ohm max), tolerance (±10%), core material (ferrite), shielding (unshielded), operating temperature range (-55°C to 125°C), and physical dimensions (0.095" Dia x 0.250" L). The primary advantage is active product status and ROHS3 compliance.
Q: What are the limitations of the API Delevan 1025-84K as a substitute?
A: The API Delevan 1025-84K has a reduced current rating of 36 mA versus the original 50 mA specification and a narrower operating temperature range of -55°C to 105°C versus -55°C to 125°C. These differences must be evaluated against circuit requirements before selection.
Q: Are the physical dimensions identical across all three parts?
A: Yes. All three parts share the same axial package dimensions of 0.095" Dia x 0.250" L (2.41mm x 6.35mm), ensuring mechanical compatibility in through-hole mounting applications.
Q: What is the difference in packaging between the substitute parts?
A: The Bourns 9230-84-RC is supplied in bulk packaging, while the API Delevan 1025-84K is supplied in cut tape (CT) packaging. Packaging selection depends on procurement and assembly process requirements.
Q: Do all parts meet the same electrical performance specifications?
A: All three parts share identical inductance (470 µH), DC resistance (42Ohm max), tolerance (±10%), Q factor (30 @ 790kHz), and self-resonant frequency (6MHz). Differences exist only in current rating and operating temperature range.
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