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Bourns 6000-270K-RC Equivalent & Substitute Parts
Part Overview
The Bourns 6000-270K-RC is a 27 µH unshielded drum core wirewound inductor rated for 2.22 A with 80 mOhm maximum DC resistance. This through-hole component features a radial, vertical cylinder package and operates across the temperature range of -55°C to 105°C. The part is classified as "Not For New Designs," indicating it has been superseded in the product portfolio. Identifying equivalent substitute parts is necessary for ongoing maintenance, repair, and legacy system support where this inductor specification remains functionally required.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 27 µH |
| Tolerance | ±10% |
| Current Rating | 2.22 A |
| DC Resistance (Max) | 80 mOhm |
| Shielding | Unshielded |
| Core Material | Ferrite |
| Mounting Type | Through Hole |
| Package Type | Radial, Vertical Cylinder |
| Physical Dimensions | 0.354" Dia (9.00mm), Height 0.480" (12.20mm) |
| Q @ Frequency | 40 @ 2.52 MHz |
| Self Resonant Frequency | 8.5 MHz |
Substitute Part Grouping Explanation
The Bourns RLB9012-270KL qualifies as a direct substitute for the 6000-270K-RC based on the following critical parameters:
- Inductance Value: Both parts are rated at 27 µH with ±10% tolerance
- Current Rating: Both support 2.22 A maximum current
- DC Resistance: Both specify 80 mOhm maximum
- Core Type: Both use ferrite drum core construction
- Shielding: Both are unshielded
- Mounting: Both are through-hole components
- Physical Package: Both use radial, vertical cylinder configuration with identical dimensions (0.354" diameter, 0.480" height)
- Electrical Performance: Both exhibit Q of 40 @ 2.52 MHz and self-resonant frequency of 8.5 MHz
The primary differences are packaging format (bulk versus tray) and product lifecycle status (obsolete versus active).
Parameter Comparison
| Parameter | 6000-270K-RC | RLB9012-270KL |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Inductance | 27 µH | 27 µH |
| Tolerance | ±10% | ±10% |
| Current Rating (Amps) | 2.22 A | 2.22 A |
| DC Resistance (Max) | 80 mOhm | 80 mOhm |
| Shielding | Unshielded | Unshielded |
| Core Material | Ferrite | Ferrite |
| Q @ Frequency | 40 @ 2.52 MHz | 40 @ 2.52 MHz |
| Self Resonant Frequency | 8.5 MHz | 8.5 MHz |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Radial, Vertical Cylinder | Radial, Vertical Cylinder |
| Size / Dimension | 0.354" Dia (9.00mm) | 0.354" Dia (9.00mm) |
| Height - Seated (Max) | 0.480" (12.20mm) | 0.480" (12.20mm) |
| Operating Temperature | -55°C ~ 105°C | -55°C ~ 125°C |
| Product Status | Not For New Designs | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| REACH Status | REACH Unaffected | REACH Unaffected |
| Packaging Format | Bulk | Tray |
Engineering Selection Recommendations
The RLB9012-270KL is the active production equivalent for the obsolete 6000-270K-RC. Both parts are manufactured by Bourns Inc. and maintain identical electrical and mechanical specifications across all critical parameters. The RLB9012-270KL offers an extended maximum operating temperature of 125°C compared to 105°C for the legacy part, providing additional thermal margin in applications requiring higher temperature operation.
Both parts carry ROHS3 compliance and REACH unaffected status, meeting current environmental and regulatory requirements. The RLB9012-270KL is the recommended selection for new procurement and system redesigns, while the 6000-270K-RC remains suitable for direct replacement in existing assemblies where the lower temperature rating is acceptable.
Frequently Asked Questions (FAQ)
Q: Can the RLB9012-270KL directly replace the 6000-270K-RC in existing circuits?
A: Yes. Both inductors share identical inductance (27 µH), current rating (2.22 A), DC resistance (80 mOhm), core material (ferrite), shielding (unshielded), and physical dimensions. The RLB9012-270KL is electrically and mechanically interchangeable for the 6000-270K-RC.
Q: What is the difference in operating temperature range?
A: The 6000-270K-RC operates from -55°C to 105°C, while the RLB9012-270KL extends to 125°C maximum. For applications operating near or above 105°C, the RLB9012-270KL provides additional thermal headroom.
Q: Are there packaging differences between these parts?
A: Yes. The 6000-270K-RC is supplied in bulk packaging, while the RLB9012-270KL is supplied in tray packaging. Both use identical through-hole radial, vertical cylinder package geometry with no impact on circuit board assembly or performance.
Q: Do both parts meet current compliance standards?
A: Yes. Both the 6000-270K-RC and RLB9012-270KL are ROHS3 compliant and REACH unaffected, meeting current environmental regulations.
Q: Why is the 6000-270K-RC marked "Not For New Designs"?
A: This designation indicates the part has been superseded by the RLB9012-270KL in Bourns' active product portfolio. New designs should specify the RLB9012-270KL. The 6000-270K-RC remains available for legacy system support and repair applications.
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