9250-474-RC Equivalent & Substitute Parts

Part Overview

The Bourns 9250-474-RC is a 470 µH shielded drum core wirewound inductor rated for 92 mA with a maximum DC resistance of 9.5 Ohm. This through-hole axial component operates across -55°C to 105°C and is designed for applications requiring electromagnetic shielding and stable inductance characteristics at 790 kHz test frequency. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Key Parameters

Parameter	Value
Inductance	470 µH
Tolerance	±10%
Current Rating	92 mA
DC Resistance (Max)	9.5 Ohm
Shielding	Shielded
Q @ 790 kHz	60
Self Resonant Frequency	5.7 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

Substitution eligibility is determined by matching the following critical parameters: inductance value (470 µH), tolerance (±10%), current rating (92 mA), DC resistance (9.5 Ohm max), Q factor (60 @ 790 kHz), self-resonant frequency (5.7 MHz), mounting type (through hole), and package format (axial). Shielding status is a secondary consideration based on application requirements. All substitute parts maintain identical electrical performance specifications and physical dimensions.

The substitute parts are grouped as follows:

Direct Manufacturer Substitutes: Parts from the same manufacturer (Bourns) with identical electrical specifications but different construction type or product status.

Similar Manufacturer Substitutes: Parts from alternative manufacturers (API Delevan, TE Connectivity) meeting all electrical and mechanical parameters with active product status.

Parameter Comparison

Part Number	Manufacturer	Inductance	Current Rating	DCR (Max)	Shielding	Type	Operating Temp	Product Status	RoHS Status	Packaging
9250-474-RC	Bourns Inc.	470 µH	92 mA	9.5 Ohm	Shielded	Drum Core, Wirewound	-55°C to 105°C	Obsolete	ROHS3 Compliant	Bulk
9250A-474-RC	Bourns Inc.	470 µH	92 mA	9.5 Ohm	Shielded	Molded	-55°C to 125°C	Active	ROHS3 Compliant	Bulk
MSC60471KT	TE Connectivity Passive Product	470 µH	92 mA	9.5 Ohm	Unshielded	—	-55°C to 105°C	Active	ROHS3 Compliant	Tape & Box
ER1641-474KR	API Delevan Inc.	470 µH	92 mA	9.5 Ohm	Shielded	Molded	-55°C to 105°C	Active	RoHS non-compliant	Tape & Reel
ER1641-474KM	API Delevan Inc.	470 µH	92 mA	9.5 Ohm	Shielded	Molded	-55°C to 105°C	Active	RoHS non-compliant	Tape & Reel
ER1641-474KP	API Delevan Inc.	470 µH	92 mA	9.5 Ohm	Shielded	Molded	-55°C to 105°C	Active	RoHS non-compliant	Tape & Reel

Engineering Selection Recommendations

9250A-474-RC (Bourns Inc.): This is the primary direct substitute from the original manufacturer. It maintains ROHS3 compliance, extends the operating temperature range to 125°C, and carries active product status. The molded construction replaces the obsolete drum core design while preserving all electrical specifications. This part is recommended for applications requiring manufacturer continuity and regulatory compliance.

MSC60471KT (TE Connectivity Passive Product): This part meets all electrical and mechanical specifications with active product status and ROHS3 compliance. The key distinction is unshielded construction, which is suitable only for applications where electromagnetic shielding is not required. Packaging is supplied in Tape & Box format.

ER1641-474KR, ER1641-474KM, ER1641-474KP (API Delevan Inc.): These three variants from API Delevan maintain shielded construction and active product status. All three carry RoHS non-compliant certification and are supplied in Tape & Reel packaging. Selection among these three variants should be based on specific packaging and supply chain requirements, as electrical specifications are identical.

Frequently Asked Questions (FAQ)

Q: Can the 9250-474-RC be directly replaced with the 9250A-474-RC?

A: Yes. Both parts are from Bourns Inc. and share identical electrical specifications (470 µH, 92 mA, 9.5 Ohm DCR). The 9250A-474-RC is the active production equivalent with extended temperature range (-55°C to 125°C versus -55°C to 105°C) and improved RoHS3 compliance status.

Q: What is the difference between shielded and unshielded variants?

A: Shielded inductors (9250-474-RC, 9250A-474-RC, ER1641 series) contain electromagnetic shielding to minimize radiated interference and coupling to adjacent components. The MSC60471KT is unshielded and suitable only for applications where EMI containment is not a design requirement. Physical dimensions and electrical performance remain identical.

Q: Are the API Delevan ER1641 variants interchangeable?

A: Yes, among themselves. ER1641-474KR, ER1641-474KM, and ER1641-474KP are electrically and mechanically identical. Differences exist only in packaging configuration and supply chain designation. Selection should be based on procurement and assembly requirements.

Q: Does packaging format affect electrical performance?

A: No. Bulk, Tape & Box, and Tape & Reel packaging formats contain identical components. Packaging selection is determined by assembly equipment compatibility and production volume requirements, not electrical characteristics.

Q: What compliance considerations apply to substitute selection?

A: The 9250A-474-RC and MSC60471KT maintain ROHS3 compliance. The ER1641 series (474KR, 474KM, 474KP) are RoHS non-compliant. Applications subject to RoHS regulations must use either the Bourns or TE Connectivity alternatives.

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