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Bourns 9250-335-RC Equivalent & Substitute Parts
Part Overview
The Bourns 9250-335-RC is a 3.3 mH shielded drum core wirewound inductor rated for 40 mA maximum current with 53 Ohm maximum DC resistance. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance with ferrite core shielding.
The 9250-335-RC has reached obsolete product status. Identifying equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and ongoing production requirements.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Inductance | 3.3 mH |
| Tolerance | ±10% |
| Current Rating | 40 mA |
| Current - Saturation (Isat) | 22 mA |
| DC Resistance (DCR) | 53 Ohm Max |
| Q @ Frequency | 45 @ 250 kHz |
| Frequency - Self Resonant | 840 kHz |
| Shielding | Shielded |
| Mounting Type | Through Hole |
| Package / Case | Axial |
| Size / Dimension | 0.162" Dia x 0.410" L (4.11 mm x 10.41 mm) |
| Operating Temperature Range | -55°C to 105°C |
| RoHS Status | ROHS3 Compliant |
Substitute Part Grouping Explanation
Substitute parts for the 9250-335-RC must maintain electrical and mechanical compatibility across the following critical parameters:
Inductance value of 3.3 mH with ±10% tolerance ensures equivalent circuit performance. Current rating of 40 mA and saturation current of 22 mA define the maximum operating envelope. DC resistance of 53 Ohm maximum establishes power dissipation characteristics. Q factor of 45 at 250 kHz and self-resonant frequency of 840 kHz determine frequency response behavior. Shielded ferrite core construction, through-hole mounting, and axial package configuration are mandatory for mechanical and electromagnetic compatibility. Physical dimensions of 0.162" diameter by 0.410" length ensure PCB layout compatibility.
The 9250A-335-RC qualifies as a direct substitute based on identical electrical specifications and physical dimensions, with the distinction of molded construction versus drum core design and active product status.
Parameter Comparison
| Parameter | 9250-335-RC (Main Part) | 9250A-335-RC (Substitute) |
|---|---|---|
| Manufacturer | Bourns Inc. | Bourns Inc. |
| Inductance | 3.3 mH | 3.3 mH |
| Tolerance | ±10% | ±10% |
| Current Rating (Amps) | 40 mA | 40 mA |
| Current - Saturation (Isat) | 22 mA | 22 mA |
| DC Resistance (DCR) | 53 Ohm Max | 53 Ohm Max |
| Q @ Frequency | 45 @ 250 kHz | 45 @ 250 kHz |
| Frequency - Self Resonant | 840 kHz | 840 kHz |
| Shielding | Shielded | Shielded |
| Mounting Type | Through Hole | Through Hole |
| Package / Case | Axial | Axial |
| Size / Dimension | 0.162" Dia x 0.410" L (4.11 mm x 10.41 mm) | 0.162" Dia x 0.410" L (4.11 mm x 10.41 mm) |
| Operating Temperature Range | -55°C to 105°C | -55°C to 125°C |
| Product Status | Obsolete | Active |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
Engineering Selection Recommendations
The 9250A-335-RC is the direct substitute for the obsolete 9250-335-RC. Both components are manufactured by Bourns Inc. and maintain identical electrical specifications and physical dimensions. The substitute part features molded construction compared to the drum core design of the original part, with equivalent performance characteristics.
The 9250A-335-RC carries active product status, ensuring ongoing availability and supply chain support. Both parts maintain ROHS3 compliance and REACH unaffected status. The substitute part extends the operating temperature range to 125°C, providing additional thermal margin for applications operating at elevated temperatures.
Frequently Asked Questions (FAQ)
Q: Can the 9250A-335-RC replace the 9250-335-RC in existing designs?
A: Yes. The 9250A-335-RC provides direct electrical and mechanical substitution. Identical inductance, current rating, DC resistance, and physical dimensions ensure drop-in compatibility. The molded construction of the substitute part does not affect circuit performance.
Q: What is the difference between drum core and molded construction?
A: Drum core and molded construction represent different manufacturing approaches for the same electrical performance. Both designs deliver identical inductance, Q factor, and frequency response. Molded construction in the 9250A-335-RC provides enhanced mechanical robustness and is the current production standard.
Q: Does the extended temperature range of the 9250A-335-RC affect compatibility?
A: No. The extended operating range of -55°C to 125°C in the substitute part is a superset of the original -55°C to 105°C specification. Applications designed for the original temperature range operate within the substitute part's rated envelope.
Q: Are both parts RoHS compliant?
A: Yes. Both the 9250-335-RC and 9250A-335-RC are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements.
Q: What packaging options are available for the 9250A-335-RC?
A: The 9250A-335-RC is supplied in bulk packaging. The through-hole axial configuration and physical dimensions remain consistent with the original part for PCB integration.
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