Bourns 9230-18 Equivalent & Substitute Parts

Part Overview

The Bourns 9230-18 is a 820 nH unshielded molded inductor rated for 380 mA with a maximum DC resistance of 850 mOhm, designed for through-hole axial mounting. This component operates across a temperature range of -55°C to 105°C and features a phenolic core material. The part is currently classified as obsolete, making identification of functionally equivalent alternatives essential for ongoing system support and procurement planning.

Key Parameters

Parameter	Value
Inductance	820 nH
Tolerance	±10%
Current Rating	380 mA
DC Resistance (Max)	850 mOhm
Q @ Frequency	28 @ 25 MHz
Self Resonant Frequency	250 MHz
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package	Axial
Size	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Shielding	Unshielded
Core Material	Phenolic

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9230-18 is determined by strict equivalence across the following critical parameters:

Inductance value: 820 nH with ±10% tolerance
DC resistance: 850 mOhm maximum
Current rating: minimum 380 mA
Q factor: 28 @ 25 MHz
Self resonant frequency: 250 MHz
Mounting configuration: Through-hole axial
Physical dimensions: 0.095" Dia x 0.250" L
Core material: Phenolic
Shielding: Unshielded

The API Delevan 1025-18K meets all substitution criteria. This part maintains identical inductance, tolerance, DC resistance, Q factor, and self resonant frequency specifications. The current rating of 420 mA exceeds the minimum 380 mA requirement. Physical dimensions and mounting type are identical. The operating temperature range extends to 125°C, providing broader environmental coverage than the original part.

Parameter Comparison

Parameter	Bourns 9230-18	API Delevan 1025-18K
Inductance	820 nH	820 nH
Tolerance	±10%	±10%
Current Rating (Amps)	380 mA	420 mA
DC Resistance (Max)	850 mOhm	850 mOhm
Q @ Frequency	28 @ 25 MHz	28 @ 25 MHz
Self Resonant Frequency	250 MHz	250 MHz
Operating Temperature Range	-55°C to 105°C	-55°C to 125°C
Mounting Type	Through Hole	Through Hole
Package / Case	Axial	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Shielding	Unshielded	Unshielded
Core Material	Phenolic	Phenolic
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

The API Delevan 1025-18K (part number 1025-18K) is the qualified substitute for the obsolete Bourns 9230-18. This substitution is based on complete electrical and mechanical parameter equivalence. The API Delevan part is currently in active production status, ensuring long-term availability and supply chain continuity.

Both parts share identical RoHS non-compliance and REACH unaffected status, maintaining regulatory consistency. The API Delevan part operates across an extended temperature range (-55°C to 125°C versus -55°C to 105°C), providing additional thermal margin for applications requiring broader environmental tolerance. The current rating increase from 380 mA to 420 mA presents no compatibility concerns and offers improved headroom for circuit operation.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan 1025-18K be used as a direct replacement for the Bourns 9230-18?

A: Yes. Both parts are electrically and mechanically equivalent across all critical parameters: inductance (820 nH), tolerance (±10%), DC resistance (850 mOhm max), Q factor (28 @ 25 MHz), self resonant frequency (250 MHz), and physical dimensions (0.095" Dia x 0.250" L). The through-hole axial mounting configuration is identical.

Q: What are the key differences between these parts?

A: The API Delevan 1025-18K has a higher current rating (420 mA versus 380 mA) and an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). Both differences favor the substitute part without introducing compatibility issues.

Q: Are there any compliance or regulatory differences?

A: Both parts share identical RoHS non-compliance and REACH unaffected status. No regulatory advantage exists between the two parts.

Q: Does the higher current rating of the API Delevan part affect circuit operation?

A: No. A higher current rating indicates the substitute part can safely handle greater current levels. This does not affect performance when operating at or below the original part's 380 mA specification.

Q: Are the physical dimensions identical?

A: Yes. Both parts measure 0.095" diameter by 0.250" length (2.41mm x 6.35mm) and use identical through-hole axial packaging, ensuring mechanical compatibility in existing PCB layouts.

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

A: The API Delevan 1025-18K is in active production status with current inventory of 3318 pieces, ensuring reliable procurement compared to the obsolete Bourns part.

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