Bourns 9250-824 Equivalent & Substitute Parts

Part Overview

The Bourns 9250-824 is a 820 µH shielded drum core wirewound inductor rated for 80 mA with a maximum DC resistance of 13 Ohm, designed for through-hole axial mounting. This component is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. The part operates across a temperature range of -55°C to 105°C and is RoHS non-compliant.

Key Parameters

Parameter	Value
Inductance	820 µH
Tolerance	±10%
Current Rating	80 mA
Current - Saturation (Isat)	45 mA
DC Resistance (DCR)	13 Ohm Max
Shielding	Shielded
Core Material	Ferrite
Q @ Frequency	60 @ 790 kHz
Frequency - Self Resonant	4.2 MHz
Operating Temperature	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)

Substitute Part Grouping Explanation

Substitution for the 9250-824 is determined by electrical and mechanical parameter alignment:

Critical Matching Parameters:

Inductance: 820 µH with ±10% tolerance
Current Rating: 80 mA minimum
DC Resistance: 13 Ohm maximum
Shielding: Shielded configuration required
Core Material: Ferrite
Operating Temperature: Minimum -55°C to 105°C range
Mounting Type: Through Hole axial
Physical Dimensions: 0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)

All substitute parts listed meet these electrical and mechanical specifications. Differences in construction type (drum core versus molded), packaging format (bulk versus tape & reel), and RoHS compliance status do not affect functional equivalence within the specified parameter boundaries.

Parameter Comparison

Part Number	Manufacturer	Inductance	Current Rating	DCR (Max)	Core Type	Operating Temp	Product Status	RoHS Status	Packaging
9250-824	Bourns Inc.	820 µH	80 mA	13 Ohm	Drum Core, Wirewound	-55°C ~ 105°C	Obsolete	RoHS non-compliant	Axial
9250A-824-RC	Bourns Inc.	820 µH	80 mA	13 Ohm	Molded	-55°C ~ 125°C	Active	ROHS3 Compliant	Bulk
1641R-824K	API Delevan Inc.	820 µH	80 mA	13 Ohm	Molded	-55°C ~ 105°C	Active	ROHS3 Compliant	Bulk
ER1641-824KM	API Delevan Inc.	820 µH	80 mA	13 Ohm	Molded	-55°C ~ 105°C	Active	RoHS non-compliant	Tape & Reel (TR)
ER1641-824KP	API Delevan Inc.	820 µH	80 mA	13 Ohm	Molded	-55°C ~ 105°C	Active	RoHS non-compliant	Tape & Reel (TR)
ER1641-824KR	API Delevan Inc.	820 µH	80 mA	13 Ohm	Molded	-55°C ~ 105°C	Active	RoHS non-compliant	Tape & Reel (TR)

Engineering Selection Recommendations

For RoHS3 Compliant Applications: The 9250A-824-RC from Bourns Inc. is the primary direct replacement. It maintains active product status, extends the operating temperature range to 125°C, and achieves ROHS3 compliance. The molded construction provides equivalent electrical performance to the original drum core design within the specified parameter tolerances.

For Bulk Packaging Requirements: Both 9250A-824-RC (Bourns) and 1641R-824K (API Delevan) are available in bulk packaging. The 1641R-824K offers an alternative from a different manufacturer while maintaining identical electrical specifications and active product status with ROHS3 compliance.

For Tape & Reel Packaging: The ER1641-824KM, ER1641-824KP, and ER1641-824KR from API Delevan Inc. are available in tape & reel format for automated assembly processes. All three maintain active product status and identical electrical parameters. RoHS compliance status remains non-compliant for these variants.

For Legacy Non-Compliant Applications: When RoHS compliance is not required, all listed substitutes remain functionally equivalent to the original 9250-824.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-824-RC directly replace the obsolete 9250-824? A: Yes. The 9250A-824-RC meets all electrical and mechanical specifications of the 9250-824. The primary differences are active product status, improved RoHS3 compliance, extended operating temperature range to 125°C, and molded construction instead of drum core. These differences do not affect functional equivalence within the specified parameter boundaries.

Q: What is the difference between bulk and tape & reel packaging? A: Bulk packaging is suitable for manual assembly and small-volume applications. Tape & reel packaging is designed for automated pick-and-place assembly equipment. Electrical performance is identical; packaging selection depends on manufacturing process requirements.

Q: Are API Delevan parts (1641R-824K, ER1641-824K series) electrically equivalent to Bourns parts? A: Yes. The API Delevan 1641R-824K and ER1641-824K series maintain identical inductance, current rating, DC resistance, and operating temperature specifications as the Bourns equivalents. All meet the core parameter requirements for substitution.

Q: Does the extended temperature range of 9250A-824-RC (-55°C to 125°C) affect compatibility? A: No. The extended range is a performance enhancement. Applications requiring only -55°C to 105°C operation remain fully compatible.

Q: Which substitute should be selected for new designs? A: Selection depends on specific requirements: choose 9250A-824-RC for RoHS3 compliance and Bourns continuity; choose 1641R-824K for bulk packaging from an alternative manufacturer; choose ER1641-824K variants for tape & reel automated assembly. All are functionally equivalent within specified parameters.

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