Bourns 9210-88 Fixed Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9210-88 is a 180 µH unshielded molded inductor rated for 108 mA with a maximum DC resistance of 6.75Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making identification of suitable substitute parts essential for ongoing design support and production continuity. The 9210 series represents a legacy product line that requires alternative sourcing for new applications or component replenishment.

Key Parameters

Parameter	Value
Inductance	180 µH
Tolerance	±5%
Current Rating	108 mA
DC Resistance (Max)	6.75Ohm
Core Material	Ferrite
Shielding	Unshielded
Operating Temperature Range	-55°C ~ 105°C
Mounting Type	Through Hole Axial
Package Dimensions	0.156" Dia x 0.375" L (3.96mm x 9.53mm)
Q @ Frequency	65 @ 790kHz
Self Resonant Frequency	7MHz

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9210-88 is determined by strict alignment of the following critical parameters:

Inductance Value: Must be 180 µH with ±5% tolerance
DC Resistance: Must not exceed 6.75Ohm maximum
Current Rating: Must support minimum 108 mA operation
Mounting Configuration: Must be through-hole axial package
Physical Dimensions: Must match 0.156" Dia x 0.375" L (3.96mm x 9.53mm)
Operating Temperature Range: Must cover -55°C ~ 105°C
Frequency Characteristics: Q @ 790kHz = 65; Self Resonant Frequency = 7MHz

The API Delevan 1537-88J meets all substitution criteria. While the core material differs (iron vs. ferrite), both materials achieve identical electrical performance at the specified test frequency and operating conditions. The substitute part provides superior current rating (123 mA vs. 108 mA), ensuring enhanced margin in current-limited applications.

Parameter Comparison

Parameter	Bourns 9210-88	API Delevan 1537-88J	Match Status
Inductance	180 µH	180 µH	Identical
Tolerance	±5%	±5%	Identical
Current Rating (Amps)	108 mA	123 mA	Substitute Exceeds
DC Resistance (Max)	6.75Ohm	6.75Ohm	Identical
Core Material	Ferrite	Iron	Different
Shielding	Unshielded	Unshielded	Identical
Operating Temperature	-55°C ~ 105°C	-55°C ~ 105°C	Identical
Mounting Type	Through Hole Axial	Through Hole Axial	Identical
Package Dimensions	0.156" Dia x 0.375" L	0.156" Dia x 0.375" L	Identical
Q @ 790kHz	65	65	Identical
Self Resonant Frequency	7MHz	7MHz	Identical
Product Status	Obsolete	Active	Substitute Active

Engineering Selection Recommendations

The API Delevan 1537-88J is the qualified substitute for the obsolete Bourns 9210-88. Selection is based on the following factors:

Product Status: The Bourns 9210-88 is obsolete, while the API Delevan 1537-88J maintains active production status, ensuring long-term availability and supply chain continuity.

Electrical Equivalence: Both parts deliver identical inductance (180 µH), DC resistance (6.75Ohm max), quality factor (65 @ 790kHz), and self-resonant frequency (7MHz). The substitute's higher current rating (123 mA) provides additional operational margin without compromising circuit performance.

Compliance Status: Both parts carry identical RoHS non-compliant, REACH unaffected, and EAR99 ECCN classifications. No compliance advantage exists between the two options.

Packaging and Mounting: Physical dimensions and through-hole axial mounting are identical, enabling direct mechanical substitution without PCB redesign.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1537-88J be used as a direct replacement for the Bourns 9210-88?

A: Yes. Both parts share identical inductance, tolerance, DC resistance, operating temperature range, and physical dimensions. The substitute's higher current rating (123 mA vs. 108 mA) ensures compatibility in all applications where the original part was specified.

Q: Does the difference in core material (iron vs. ferrite) affect circuit performance?

A: No. Both core materials achieve identical electrical characteristics at the specified test frequency (790 kHz) and operating conditions. The Q factor and self-resonant frequency are identical for both parts.

Q: Are there packaging differences between these parts?

A: The Bourns 9210-88 is supplied in standard packaging, while the API Delevan 1537-88J is supplied in Tape & Reel (TR) format. Both maintain identical component dimensions and through-hole axial configuration, requiring no PCB layout modifications.

Q: What is the compliance status of the substitute part?

A: The API Delevan 1537-88J carries the same compliance classifications as the original: RoHS non-compliant, REACH unaffected, and EAR99 ECCN. No compliance advantage or disadvantage exists between the two parts.

Q: Why is the Bourns 9210-88 obsolete?

A: The 9210 series represents a legacy product line. The API Delevan 1537 series provides equivalent electrical performance with active production status, making it the recommended long-term sourcing solution.

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