Bourns 9250-275-RC Equivalent & Substitute Parts

Part Overview

The Bourns 9250-275-RC is a 2.7 mH shielded drum core wirewound inductor rated for 40 mA maximum current with 47.3 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 9250-275-RC carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for applications currently utilizing this component.

Substiute Parts

9250-275-RC

Bourns Inc.In Stock: 6409250-275-RC Datasheet

Current PartRFQ

9250A-275-RC

Bourns Inc.In Stock: 14789250A-275-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The Bourns 9250A-275-RC qualifies as a direct substitute for the 9250-275-RC based on the following critical parameters:

Electrical specifications match exactly: 2.7 mH inductance, ±10% tolerance, 40 mA current rating, 25 mA saturation current, 47.3 Ohm maximum DC resistance, 45 Q factor at 250 kHz, and 920 kHz self-resonant frequency.

Physical compatibility is maintained: identical axial through-hole mounting, ferrite shielded core construction, and matching dimensions of 0.162" diameter by 0.410" length.

Environmental and compliance ratings align: both components operate across -55°C to 105°C (with the substitute rated to 125°C maximum), maintain ROHS3 compliance, and carry REACH unaffected status.

The primary distinction is construction type: the 9250-275-RC uses drum core wirewound design, while the 9250A-275-RC employs molded construction. Both achieve identical electrical performance within specified tolerances.

Parameter Comparison

Engineering Selection Recommendations

The 9250A-275-RC is the appropriate substitute for the obsolete 9250-275-RC. Both components maintain identical electrical and mechanical specifications within the defined operating parameters. The substitute carries active product status, ensuring ongoing availability and supply chain support.

The 9250A-275-RC provides an extended maximum operating temperature of 125°C compared to the original 105°C rating, offering additional thermal margin for applications operating near temperature limits. Both components satisfy ROHS3 and REACH compliance requirements.

Selection between these components should be based on application temperature requirements and supply availability. For applications operating within the -55°C to 105°C range, either component is functionally equivalent. For applications requiring operation above 105°C, the 9250A-275-RC provides the necessary thermal headroom.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-275-RC directly replace the 9250-275-RC in existing designs?

A: Yes. Both components share identical inductance (2.7 mH), current rating (40 mA), DC resistance (47.3 Ohm max), and physical dimensions. Axial through-hole mounting and ferrite shielded construction are identical. The substitute is functionally equivalent for all applications within the specified operating temperature range.

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

A: The 9250-275-RC uses drum core wirewound design, while the 9250A-275-RC employs molded construction. Both achieve identical electrical performance and Q factor specifications. Molded construction typically offers improved mechanical robustness and consistency in production.

Q: Are there temperature considerations when substituting?

A: The 9250-275-RC operates to 105°C maximum, while the 9250A-275-RC operates to 125°C maximum. For applications operating within -55°C to 105°C, both components are equivalent. Applications requiring operation above 105°C should use the 9250A-275-RC.

Q: Do both components meet the same compliance standards?

A: Yes. Both the 9250-275-RC and 9250A-275-RC are ROHS3 compliant and REACH unaffected. Compliance certifications are identical.

Q: What is the saturation current specification, and why does it matter?

A: Saturation current (Isat) is 25 mA for both components. This represents the current level at which the inductor begins to saturate, reducing inductance. The 40 mA current rating provides a safety margin above saturation current for normal operation.

Q: Are packaging options different between the two parts?

A: Both components are supplied in axial through-hole packages with identical physical dimensions. The 9250-275-RC is listed as obsolete, while the 9250A-275-RC is available in bulk packaging with active product status.