Bourns 9130-88 680µH Axial Inductor: Equivalent & Substitute Parts

Part Overview

The Bourns 9130-88 is a 680 µH unshielded drum core wirewound inductor rated for 30 mA with a maximum DC resistance of 60Ω. This through-hole axial component operates across the temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance filtering and signal conditioning. The 9130-88 is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications. Active alternatives from API Delevan Inc. provide direct functional replacement with improved product status and availability.

Key Parameters

Parameter	Value
Inductance	680 µH
Tolerance	±10%
Current Rating	30 mA
DC Resistance (Max)	60Ω
Q @ Frequency	30 @ 790 kHz
Frequency - Self Resonant	4 MHz
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.095" Dia x 0.250" L (2.41mm x 6.35mm)
Shielding	Unshielded
Core Material	Ferrite

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 9130-88 is determined by strict equivalence across the following electrical and mechanical parameters:

Inductance Value: 680 µH (exact match required)
Tolerance: ±10% (matching specification)
Current Rating: 30 mA (minimum threshold)
DC Resistance: 60Ω maximum (performance ceiling)
Q Factor: 30 @ 790 kHz (frequency response characteristic)
Self-Resonant Frequency: 4 MHz (upper frequency limit)
Operating Temperature: -55°C to 105°C (environmental compatibility)
Mounting Type: Through Hole (assembly compatibility)
Package: Axial (form factor and PCB footprint)
Physical Dimensions: 0.095" Dia x 0.250" L (mechanical fit)
Core Material: Ferrite (electromagnetic performance)
Shielding: Unshielded (EMI characteristics)

The three API Delevan ER1025 series parts (ER1025-88KM, ER1025-88KP, ER1025-88KR) meet all substitution criteria. These molded inductors provide identical electrical performance and physical compatibility while offering active product status and improved supply chain availability.

Parameter Comparison

Parameter	Bourns 9130-88	API Delevan ER1025-88KM	API Delevan ER1025-88KP	API Delevan ER1025-88KR
Inductance	680 µH	680 µH	680 µH	680 µH
Tolerance	±10%	±10%	±10%	±10%
Current Rating (Amps)	30 mA	30 mA	30 mA	30 mA
DC Resistance (Max)	60Ω	60Ω	60Ω	60Ω
Q @ Frequency	30 @ 790 kHz	30 @ 790 kHz	30 @ 790 kHz	30 @ 790 kHz
Frequency - Self Resonant	4 MHz	4 MHz	4 MHz	4 MHz
Operating Temperature Range	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	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)	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	Unshielded	Unshielded
Core Material	Ferrite	Ferrite	Ferrite	Ferrite
Product Status	Obsolete	Active	Active	Active
Type	Drum Core, Wirewound	Molded	Molded	Molded
Packaging	-	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three API Delevan ER1025 series inductors (ER1025-88KM, ER1025-88KP, ER1025-88KR) are direct functional equivalents to the Bourns 9130-88. Selection among these three active alternatives should be based on packaging requirements and supply availability:

ER1025-88KM: 921 units in stock
ER1025-88KP: 853 units in stock
ER1025-88KR: 866 units in stock

All three parts share identical electrical specifications, physical dimensions, and environmental ratings. The transition from the obsolete drum core wirewound design to the molded construction of the ER1025 series maintains full electrical performance while providing improved product lifecycle status and supply chain continuity. Compliance profiles remain consistent across all parts, with matching RoHS non-compliance and REACH unaffected status.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan ER1025-88 series parts directly replace the Bourns 9130-88 in existing designs?

A: Yes. The ER1025-88KM, ER1025-88KP, and ER1025-88KR inductors provide direct electrical and mechanical equivalence. All electrical parameters, physical dimensions, and operating temperature ranges are identical. The transition from drum core wirewound to molded construction does not affect circuit performance.

Q: What is the difference between the three ER1025-88 variants?

A: The ER1025-88KM, ER1025-88KP, and ER1025-88KR variants are electrically and mechanically identical. Differences are limited to packaging designations and inventory levels. All are supplied in Tape & Reel (TR) format.

Q: Are there any compliance or regulatory differences between the main part and substitutes?

A: No. All parts share identical RoHS non-compliance and REACH unaffected status. Regulatory and compliance profiles are equivalent across the Bourns 9130-88 and all three API Delevan ER1025-88 variants.

Q: Why is the Bourns 9130-88 classified as obsolete?

A: The 9130-88 is listed as obsolete by the manufacturer. The API Delevan ER1025-88 series provides active product alternatives with equivalent performance and improved supply availability.

Q: Are the physical dimensions identical between the main part and substitutes?

A: Yes. All parts share the same axial package dimensions of 0.095" diameter by 0.250" length (2.41mm x 6.35mm). PCB footprint and through-hole mounting compatibility are identical.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by matching inductance (680 µH), tolerance (±10%), current rating (30 mA), DC resistance (60Ω maximum), Q factor (30 @ 790 kHz), self-resonant frequency (4 MHz), and operating temperature range (-55°C to 105°C).

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