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Bourns 9230-30-RC Fixed Inductor - Equivalent & Substitute Parts
Part Overview
The Bourns 9230-30-RC is a 2.7 µH unshielded molded inductor rated for 495 mA with a maximum DC resistance of 500mOhm. This through-hole axial component is designed for general-purpose filtering and energy storage applications in electronic circuits. The part maintains active product status with full ROHS3 compliance and is currently in stock with 1465 units available.
Substitute parts are identified when equivalent inductance values, current ratings, and core specifications align within acceptable tolerance ranges, enabling direct replacement in circuit designs where the original part becomes unavailable or when alternative packaging or performance characteristics are required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 2.7 µH |
| Inductance Tolerance | ±10% |
| Current Rating | 495 mA |
| DC Resistance (DCR) | 500mOhm Max |
| Shielding | Unshielded |
| Mounting Type | Through Hole |
| Package Type | Axial |
| Operating Temperature Range | -55°C ~ 125°C |
| Q @ Frequency | 37 @ 7.9MHz |
| Self Resonant Frequency | 100MHz |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitution eligibility for the Bourns 9230-30-RC is determined by the following critical parameters:
- Inductance Value: Must match 2.7 µH within the ±10% tolerance specification
- Current Rating: Substitute must support minimum 495 mA; higher ratings are acceptable
- DC Resistance: Must not exceed 500mOhm maximum; lower values are acceptable
- Mounting Type: Must be through-hole axial configuration
- Operating Temperature: Must support the required application temperature range
- Compliance: Must maintain ROHS3 compliance for regulated applications
The TE Connectivity SC302R7KT meets these substitution criteria with matching inductance, superior current rating (565 mA), and equivalent DC resistance specification (550mOhm Max). Both parts operate at identical test frequency (7.9 MHz) and maintain the same Q factor performance.
Parameter Comparison
| Parameter | Bourns 9230-30-RC | TE Connectivity SC302R7KT | Compatibility |
|---|---|---|---|
| Inductance | 2.7 µH | 2.7 µH | Match |
| Inductance Tolerance | ±10% | ±10% | Match |
| Current Rating (Amps) | 495 mA | 565 mA | Compatible (higher rating) |
| DC Resistance (DCR) | 500mOhm Max | 550mOhm Max | Compatible (within tolerance) |
| Q @ Frequency | 37 @ 7.9MHz | 37 @ 7.9MHz | Match |
| Self Resonant Frequency | 100MHz | 100MHz | Match |
| Mounting Type | Through Hole | Through Hole | Match |
| Package / Case | Axial | Axial | Match |
| Operating Temperature | -55°C ~ 125°C | -55°C ~ 100°C | Compatible (SC302R7KT limited to 100°C max) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | Match |
| Shielding | Unshielded | Shielded | Different (shielding difference noted) |
Engineering Selection Recommendations
The TE Connectivity SC302R7KT qualifies as a direct substitute for the Bourns 9230-30-RC based on matching inductance specifications, equivalent electrical performance, and identical compliance certifications. Both components maintain ROHS3 compliance and EAR99 export classification.
The SC302R7KT provides enhanced current handling capability (565 mA versus 495 mA), making it suitable for applications requiring higher current margins. The shielded construction of the SC302R7KT may provide additional electromagnetic interference rejection compared to the unshielded Bourns design, which may be beneficial in noise-sensitive applications.
Temperature range consideration: The SC302R7KT operates to 100°C maximum, compared to 125°C for the Bourns part. Applications requiring sustained operation above 100°C must use the original Bourns 9230-30-RC or identify alternative parts with extended temperature ratings.
Frequently Asked Questions (FAQ)
Q: Can the TE Connectivity SC302R7KT replace the Bourns 9230-30-RC in all applications?
A: The SC302R7KT is electrically compatible for applications operating within -55°C to 100°C. Applications requiring operation above 100°C must use the Bourns part or an alternative with extended temperature specification.
Q: What is the significance of the shielding difference between these parts?
A: The Bourns 9230-30-RC is unshielded, while the SC302R7KT is shielded. Shielding reduces electromagnetic radiation emission and susceptibility. Circuit layout and EMI requirements determine whether shielding is necessary or beneficial.
Q: Are both parts suitable for high-frequency filtering applications?
A: Yes. Both parts demonstrate identical Q factor (37 @ 7.9MHz) and self-resonant frequency (100MHz), making them suitable for equivalent high-frequency performance in filtering and impedance matching circuits.
Q: What packaging differences exist between these parts?
A: The Bourns 9230-30-RC is supplied in bulk packaging, while the SC302R7KT is supplied in cut tape format. Both maintain identical through-hole axial form factor for PCB mounting.
Q: Does the higher DC resistance of the SC302R7KT affect circuit performance?
A: The SC302R7KT DCR specification (550mOhm Max) is 50mOhm higher than the Bourns part (500mOhm Max). For most filtering applications, this difference is negligible. Power dissipation-critical designs should calculate actual losses based on operating current.
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