Bourns 9250-156 Equivalent & Substitute Parts

Part Overview

The Bourns 9250-156 is a 15 mH shielded drum core wirewound inductor rated for 22 mA maximum current with 157 Ohm DC resistance. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The part operates across the temperature range of -55°C to 105°C and is designed for through-hole axial mounting applications.

Substiute Parts

9250-156

Bourns Inc.In Stock: 9199250-156 Datasheet

Current PartRFQ

4307-156K

API Delevan Inc.In Stock: 11144307-156K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the Bourns 9250-156 is determined by strict equivalence across the following critical parameters:

• Inductance value: 15 mH with ±10% tolerance
• DC resistance: 157 Ohm maximum
• Shielding: Shielded configuration required
• Core material: Ferrite
• Mounting: Through-hole axial package
• Q factor at test frequency: 30 @ 79 kHz
• Inductance test frequency: 79 kHz

The API Delevan 4307-156K meets these core electrical specifications while maintaining the same inductance, tolerance, DC resistance, shielding, core material, and Q factor characteristics. Differences in current rating, saturation current, self-resonant frequency, and operating temperature range do not disqualify this part as a functional substitute when the application requirements fall within the substitute's specifications.

Parameter Comparison

Engineering Selection Recommendations

The API Delevan 4307-156K is an active production substitute for the obsolete Bourns 9250-156. Both parts share identical inductance, tolerance, DC resistance, shielding configuration, core material, and Q factor specifications at the test frequency of 79 kHz. The substitute part offers a higher current rating (45 mA versus 22 mA) and an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C), providing additional design margin in these parameters.

Physical dimensions differ slightly, with the 4307-156K measuring 0.197" diameter by 0.447" length compared to the 9250-156 at 0.162" diameter by 0.410" length. PCB layout and mechanical clearance must be verified for the substitute part in space-constrained applications.

Both parts maintain identical RoHS non-compliant and REACH unaffected regulatory status. The substitute is available in tape and reel packaging, supporting automated assembly processes where the original part was supplied in bulk format.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 4307-156K directly replace the Bourns 9250-156 in all applications?

A: Substitution is valid when the application requirements fall within the electrical specifications of the 4307-156K. The critical matching parameters are inductance (15 mH ±10%), DC resistance (157 Ohm maximum), shielding, core material (ferrite), and Q factor (30 @ 79 kHz). The higher current rating and extended temperature range of the substitute provide additional operational margin. Physical dimensions must be verified for PCB fit.

Q: What are the key differences between these two parts?

A: The primary differences are product status (obsolete versus active), current rating (22 mA versus 45 mA), self-resonant frequency (290 kHz versus 600 kHz), operating temperature range (-55°C to 105°C versus -55°C to 125°C), core construction (drum core wirewound versus molded), physical dimensions, and packaging format (bulk versus tape and reel).

Q: Are there any compliance or regulatory concerns with substitution?

A: Both parts share identical RoHS non-compliant and REACH unaffected status. No additional compliance considerations arise from substitution between these two parts.

Q: Will the physical size difference affect my design?

A: The 4307-156K is slightly larger (0.197" diameter x 0.447" length) than the 9250-156 (0.162" diameter x 0.410" length). PCB layout, component spacing, and mechanical clearance must be evaluated for space-constrained applications before implementation.

Q: What is the significance of the different self-resonant frequencies?

A: The 4307-156K has a higher self-resonant frequency (600 kHz) compared to the 9250-156 (290 kHz). This difference affects the part's behavior at high frequencies but does not impact substitution validity when operating within the specified inductance test frequency of 79 kHz.