Bourns 9250-332-RC Equivalent & Substitute Parts

Part Overview

The Bourns 9250-332-RC is a 3.3 µH shielded drum core wirewound inductor rated for 480 mA with a maximum DC resistance of 350 mOhm. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring fixed inductance with ferrite core shielding. The 9250-332-RC is classified as obsolete, making equivalent substitute parts necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Inductance	3.3 µH
Tolerance	±10%
Current Rating	480 mA
DC Resistance (Max)	350 mOhm
Shielding	Shielded
Q @ Frequency	44 @ 7.9 MHz
Self Resonant Frequency	85 MHz
Operating Temperature Range	-55°C to 105°C
Mounting Type	Through Hole
Package	Axial
Size	0.162" Dia x 0.410" L (4.11mm x 10.41mm)

Substitute Part Grouping Explanation

Substitute parts for the 9250-332-RC are qualified based on matching the following critical electrical and mechanical parameters:

Inductance value: 3.3 µH with ±10% tolerance
Current rating: 480 mA minimum
DC resistance: 350 mOhm maximum
Shielding: Shielded construction
Q factor: 44 @ 7.9 MHz
Self resonant frequency: 85 MHz
Operating temperature range: -55°C minimum to 105°C minimum
Mounting and package: Through-hole axial configuration
Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm)

Substitutes are grouped into two categories: direct manufacturer alternatives from Bourns Inc. and cross-manufacturer equivalents from API Delevan Inc. All qualified substitutes maintain identical electrical performance and physical compatibility with the original 9250-332-RC.

Parameter Comparison

Parameter	9250-332-RC (Main)	9250A-332-RC	ER1641-332KM	ER1641-332KP	ER1641-332KR
Manufacturer	Bourns Inc.	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Inductance	3.3 µH	3.3 µH	3.3 µH	3.3 µH	3.3 µH
Tolerance	±10%	±10%	±10%	±10%	±10%
Current Rating (Amps)	480 mA	480 mA	480 mA	480 mA	480 mA
DC Resistance (Max)	350 mOhm	350 mOhm	350 mOhm	350 mOhm	350 mOhm
Q @ Frequency	44 @ 7.9 MHz	44 @ 7.9 MHz	44 @ 7.9 MHz	44 @ 7.9 MHz	44 @ 7.9 MHz
Self Resonant Frequency	85 MHz	85 MHz	85 MHz	85 MHz	85 MHz
Operating Temperature Range	-55°C to 105°C	-55°C to 125°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Shielding	Shielded	Shielded	Shielded	Shielded	Shielded
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Product Status	Obsolete	Active	Active	Active	Active
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant

Engineering Selection Recommendations

The 9250A-332-RC from Bourns Inc. is the primary recommended substitute for the obsolete 9250-332-RC. Both parts are ROHS3 compliant and manufactured by the same supplier. The 9250A-332-RC features an extended operating temperature range of -55°C to 125°C compared to the original -55°C to 105°C specification, providing additional thermal margin. The 9250A-332-RC is currently in active production status with 1309 units in stock.

The ER1641 series inductors from API Delevan Inc. (ER1641-332KM, ER1641-332KP, ER1641-332KR) are functionally equivalent cross-manufacturer alternatives that meet all electrical and mechanical specifications. These parts are available in active production status. However, the ER1641 series is RoHS non-compliant, which may restrict use in applications requiring RoHS certification. Selection between ER1641 variants depends on packaging requirements: all three variants are supplied in Tape & Reel (TR) format with inventory levels ranging from 927 to 1155 units.

For applications requiring RoHS compliance, the 9250A-332-RC is the appropriate selection. For applications without RoHS restrictions, the ER1641 series provides alternative sourcing options with comparable availability.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-332-RC directly replace the 9250-332-RC in existing designs?

A: Yes. The 9250A-332-RC maintains identical electrical specifications (3.3 µH inductance, 480 mA current rating, 350 mOhm DC resistance, 44 Q @ 7.9 MHz, 85 MHz self resonant frequency) and physical dimensions (0.162" Dia x 0.410" L). Both are through-hole axial components with shielded construction. The 9250A-332-RC offers an extended operating temperature range to 125°C.

Q: What is the difference between the Bourns 9250A-332-RC and the API Delevan ER1641-332K variants?

A: Both meet identical electrical and mechanical specifications. The primary differences are manufacturer, core material (Bourns uses ferrite; API Delevan uses iron), and compliance status. The 9250A-332-RC is ROHS3 compliant; the ER1641 series is RoHS non-compliant. All three ER1641 variants (KM, KP, KR) are electrically equivalent and differ only in packaging designation.

Q: Are there packaging differences between substitute parts?

A: The 9250A-332-RC is supplied in bulk packaging. The ER1641-332KM, ER1641-332KP, and ER1641-332KR are supplied in Tape & Reel (TR) format. Physical component dimensions and through-hole axial configuration remain identical across all substitutes.

Q: Which substitute should be selected for RoHS-compliant applications?

A: The 9250A-332-RC is ROHS3 compliant and is the appropriate selection for applications requiring RoHS certification. The ER1641 series from API Delevan is RoHS non-compliant.

Q: Do all substitute parts operate across the same temperature range?

A: The 9250A-332-RC operates from -55°C to 125°C. The original 9250-332-RC and all ER1641 variants operate from -55°C to 105°C. For applications requiring operation above 105°C, the 9250A-332-RC provides extended thermal capability.

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