Bourns 9250-185-RC Equivalent & Substitute Parts

Part Overview

The Bourns 9250-185-RC is a 1.8 mH shielded drum core wirewound inductor rated for 50 mA with a maximum DC resistance of 29.9 Ohm. This through-hole axial component is designed for applications requiring fixed inductance with ferrite core shielding and operates across the temperature range of -55°C to 105°C. The product is currently obsolete, making identification of suitable substitute components essential for ongoing system support and new design implementations.

Substiute Parts

9250-185-RC

Bourns Inc.In Stock: 10289250-185-RC Datasheet

Current PartRFQ

9250A-185-RC

Bourns Inc.In Stock: 16629250A-185-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bourns 9250-185-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 1.8 mH with ±10% tolerance
• Current rating: 50 mA minimum
• DC resistance: 29.9 Ohm maximum
• Shielding: Shielded configuration required
• Core material: Ferrite
• Mounting: Through-hole axial package
• Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm)
• Frequency characteristics: Q @ 250 kHz and 1 MHz self-resonant frequency

The Bourns 9250A-185-RC qualifies as a direct substitute based on matching all electrical specifications and physical form factor. The primary distinction is the transition from drum core to molded construction and the upgrade from obsolete to active product status.

Parameter Comparison

Engineering Selection Recommendations

The Bourns 9250A-185-RC is the direct substitute for the obsolete 9250-185-RC. Both components maintain identical electrical specifications and physical dimensions, ensuring pin-compatible replacement in existing circuit designs. The 9250A-185-RC offers the advantage of active product status with extended availability and manufacturing support.

The transition from drum core to molded construction in the 9250A series represents a manufacturing evolution while preserving all critical electrical parameters. Both components are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements.

The 9250A-185-RC provides an expanded operating temperature range (-55°C to 125°C versus -55°C to 105°C), offering improved thermal performance for applications operating at elevated temperatures.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-185-RC be used as a direct replacement for the 9250-185-RC?

A: Yes. Both components share identical inductance (1.8 mH), current rating (50 mA), DC resistance (29.9 Ohm max), shielding configuration, core material, and physical dimensions. The 9250A-185-RC is the active production equivalent.

Q: What is the difference between drum core and molded construction?

A: The 9250-185-RC uses drum core construction, while the 9250A-185-RC uses molded construction. Both achieve the same electrical performance and frequency characteristics. Molded construction represents the current manufacturing standard for this inductance value.

Q: Are there any thermal performance differences?

A: The 9250A-185-RC operates to 125°C maximum, compared to 105°C for the 9250-185-RC. This extended range provides additional margin for high-temperature applications. Electrical performance remains equivalent across the overlapping temperature range.

Q: Do both parts meet current compliance standards?

A: Yes. Both the 9250-185-RC and 9250A-185-RC are ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic components.

Q: Are the physical dimensions identical?

A: Yes. Both components measure 0.162" diameter by 0.410" length (4.11mm x 10.41mm), ensuring identical PCB footprint and mounting compatibility.

Q: What is the saturation current specification?

A: Both components have a saturation current (Isat) of 30 mA, which is lower than the 50 mA current rating. This parameter defines the point at which inductance begins to degrade under increasing current.