Equivalent & Substitute Parts for Bourns 9250-102-RC

Part Overview

The Bourns 9250-102-RC is a 1 µH shielded drum core wirewound inductor rated for 1.07 A with 70 mOhm maximum DC resistance. This through-hole axial component operates across -55°C to 105°C and is designed for 25 MHz applications with a self-resonant frequency of 140 MHz. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Inductance	1 µH
Tolerance	±10%
Current Rating	1.07 A
DC Resistance (Max)	70 mOhm
Shielding	Shielded
Operating Temperature	-55°C ~ 105°C
Mounting Type	Through Hole
Package / Case	Axial
Size / Dimension	0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Frequency - Self Resonant	140 MHz
Q @ 25 MHz	44

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters:

Inductance value: 1 µH
Tolerance: ±10%
Current rating: minimum 1.07 A
DC resistance: maximum 70 mOhm
Shielding: Shielded configuration
Mounting type: Through hole axial
Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm)
Operating temperature range: minimum -55°C to 105°C
Self-resonant frequency: 140 MHz

Substitute parts are grouped into two categories: direct manufacturer equivalents from Bourns Inc. and similar cross-manufacturer alternatives from API Delevan Inc. All candidates maintain identical electrical specifications and physical form factors.

Parameter Comparison

Part Number	Manufacturer	Type	Inductance	Current Rating	DCR (Max)	Shielding	Operating Temp	Q @ 25MHz	Product Status	RoHS Status	Packaging
9250-102-RC	Bourns Inc.	Drum Core, Wirewound	1 µH	1.07 A	70 mOhm	Shielded	-55°C ~ 105°C	44	Obsolete	ROHS3 Compliant	-
9250A-102-RC	Bourns Inc.	Molded	1 µH	1.07 A	70 mOhm	Shielded	-55°C ~ 125°C	40	Active	ROHS3 Compliant	Bulk
1641R-102K	API Delevan Inc.	Molded	1 µH	1.09 A	70 mOhm	Shielded	-55°C ~ 105°C	44	Active	ROHS3 Compliant	Bulk
ER1641-102KM	API Delevan Inc.	Molded	1 µH	1.07 A	70 mOhm	Shielded	-55°C ~ 105°C	44	Active	RoHS non-compliant	Tape & Reel (TR)
ER1641-102KP	API Delevan Inc.	Molded	1 µH	1.07 A	70 mOhm	Shielded	-55°C ~ 105°C	44	Active	RoHS non-compliant	Tape & Reel (TR)
ER1641-102KR	API Delevan Inc.	-	1 µH	1.07 A	70 mOhm	Unshielded	-55°C ~ 105°C	44	Active	RoHS non-compliant	Cut Tape (CT)

Engineering Selection Recommendations

Primary Substitute: Bourns 9250A-102-RC

The 9250A-102-RC is the direct manufacturer equivalent from Bourns Inc. and represents the primary substitution path. This part maintains identical electrical specifications to the obsolete 9250-102-RC while offering an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). Both parts are ROHS3 compliant and share identical physical dimensions and shielding characteristics. The 9250A-102-RC is currently in active production status with bulk packaging availability.

Secondary Substitutes: API Delevan 1641R-102K, ER1641-102KM, ER1641-102KP

The API Delevan 1641R-102K provides an alternative from a different manufacturer with active product status and ROHS3 compliance. This part exceeds the current rating specification (1.09 A versus 1.07 A required) while maintaining all other electrical parameters. The ER1641-102KM and ER1641-102KP variants offer identical electrical performance but are supplied in tape and reel packaging and carry RoHS non-compliant status.

Not Recommended: API Delevan ER1641-102KR

The ER1641-102KR is unshielded, which deviates from the shielding requirement of the original part. This configuration difference disqualifies it as a direct substitute for applications requiring shielded performance.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-102-RC directly replace the obsolete 9250-102-RC?

A: Yes. The 9250A-102-RC maintains identical inductance (1 µH), current rating (1.07 A), DC resistance (70 mOhm maximum), shielding, and physical dimensions. The extended operating temperature range (-55°C to 125°C) provides additional margin. Both parts are ROHS3 compliant.

Q: What is the difference between the Bourns and API Delevan substitutes?

A: The Bourns 9250A-102-RC is the same manufacturer's direct replacement. API Delevan alternatives (1641R-102K, ER1641-102KM, ER1641-102KP) are cross-manufacturer equivalents with identical electrical specifications but different core materials (iron versus ferrite) and packaging formats. API Delevan parts carry RoHS non-compliant status except for the 1641R-102K.

Q: Does packaging format affect electrical performance?

A: No. Bulk, tape and reel, and cut tape packaging formats do not alter the electrical characteristics of the inductor. Selection depends on assembly process requirements and inventory management practices.

Q: Why is the ER1641-102KR listed but not recommended?

A: The ER1641-102KR is unshielded, whereas the original 9250-102-RC is shielded. This fundamental difference in shielding configuration makes it unsuitable for direct substitution in applications requiring electromagnetic shielding.

Q: Are there temperature range considerations for substitution?

A: The 9250A-102-RC operates to 125°C, exceeding the original part's 105°C maximum. API Delevan alternatives operate to 105°C, matching the original specification. For applications operating near the upper temperature limit, the 9250A-102-RC provides additional thermal margin.

Q: What compliance certifications apply to these substitutes?

A: The Bourns 9250A-102-RC and API Delevan 1641R-102K are ROHS3 compliant. The ER1641-102KM and ER1641-102KP variants are RoHS non-compliant. All parts are REACH unaffected and carry EAR99 ECCN classification.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message