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Bourns 5900-333 Equivalent & Substitute Parts
Part Overview
The Bourns 5900-333 is a 33 mH unshielded drum core wirewound inductor rated for 130 mA with a maximum DC resistance of 25 Ohm, designed for through-hole axial mounting. This component operates across a temperature range of -55°C to 105°C and is specified at 1 kHz inductance frequency testing. The part is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 33 mH |
| Tolerance | ±10% |
| Current Rating | 130 mA |
| DC Resistance (Max) | 25 Ohm |
| Core Material | Ferrite |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package | Axial |
| Operating Temperature | -55°C to 105°C |
| Inductance Test Frequency | 1 kHz |
Substitute Part Grouping Explanation
Substitution eligibility for the Bourns 5900-333 is determined by the following critical parameters:
- Inductance Value: Must be 33 mH with ±10% tolerance
- Core Type & Shielding: Ferrite material, unshielded configuration
- Mounting & Package: Through-hole axial mounting
- Current Handling: Rated current must meet or exceed 130 mA operational requirement
- DC Resistance: Maximum 25 Ohm specification
- Temperature Range: Operating range must encompass -55°C to 105°C minimum
- Frequency Specification: 1 kHz inductance test frequency
The API Delevan 4590-336K satisfies all substitution criteria within these defined parameters.
Parameter Comparison
| Parameter | Bourns 5900-333 | API Delevan 4590-336K | Compatibility |
|---|---|---|---|
| Manufacturer Part Number | 5900-333 | 4590-336K | Different manufacturers |
| Inductance | 33 mH | 33 mH | Match |
| Tolerance | ±10% | ±10% | Match |
| Current Rating (Amps) | 130 mA | 160 mA | Substitute exceeds requirement |
| DC Resistance (Max) | 25 Ohm | 25.7 Ohm | Substitute within tolerance |
| Core Material | Ferrite | Ferrite | Match |
| Shielding | Unshielded | Unshielded | Match |
| Mounting Type | Through Hole | Through Hole | Match |
| Package / Case | Axial | Axial | Match |
| Size / Dimension | 0.453" Dia x 0.900" L (11.51mm x 22.86mm) | 0.455" Dia x 0.900" L (11.55mm x 22.86mm) | Physically compatible |
| Operating Temperature | -55°C to 105°C | -55°C to 125°C | Substitute exceeds range |
| Inductance Test Frequency | 1 kHz | 1 kHz | Match |
| Product Status | Obsolete | Active | Substitute actively manufactured |
| RoHS Status | RoHS non-compliant | RoHS non-compliant | Match |
Engineering Selection Recommendations
The API Delevan 4590-336K is a direct functional substitute for the obsolete Bourns 5900-333. Both components share identical inductance values, tolerance specifications, core materials, and mounting configurations. The substitute part demonstrates superior electrical performance with a 160 mA current rating compared to the 130 mA requirement, and an extended operating temperature range of -55°C to 125°C versus -55°C to 105°C. The DC resistance differential of 0.7 Ohm (25.7 Ohm versus 25 Ohm maximum) remains within acceptable engineering margins for equivalent circuit behavior. Physical dimensions are virtually identical, ensuring PCB layout compatibility. Both parts maintain identical RoHS non-compliance status. The API Delevan component is currently in active production with confirmed inventory availability, providing supply chain continuity for applications previously specified with the Bourns 5900-333.
Frequently Asked Questions (FAQ)
Q: Can the API Delevan 4590-336K be used as a direct replacement for the Bourns 5900-333?
A: Yes. Both inductors share the same 33 mH inductance value, ±10% tolerance, ferrite unshielded drum core construction, through-hole axial mounting, and 1 kHz test frequency. Physical dimensions are compatible, and the substitute part exceeds the original current and temperature specifications.
Q: What is the significance of the higher current rating on the substitute part?
A: The API Delevan 4590-336K is rated for 160 mA compared to the Bourns 5900-333 at 130 mA. This higher rating provides additional design margin and does not create incompatibility; the substitute can safely operate at the original 130 mA specification.
Q: How does the DC resistance difference affect circuit performance?
A: The substitute part specifies 25.7 Ohm maximum DC resistance versus 25 Ohm for the original. This 0.7 Ohm difference represents a 2.8% variance and remains within typical circuit tolerance budgets for inductor applications.
Q: Are there any temperature range considerations?
A: The API Delevan 4590-336K operates from -55°C to 125°C, exceeding the original -55°C to 105°C range. This extended capability provides additional operational flexibility without introducing compatibility issues.
Q: Do both parts have identical physical dimensions?
A: Dimensions are virtually identical. The Bourns 5900-333 measures 0.453" diameter by 0.900" length, while the API Delevan 4590-336K measures 0.455" diameter by 0.900" length. This 0.002" diameter difference is negligible for through-hole PCB mounting.
Q: What is the compliance status of the substitute part?
A: Both the original and substitute parts are RoHS non-compliant and REACH unaffected, maintaining identical regulatory classification.
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