9250-474 Equivalent & Substitute Parts

Part Overview

The Bourns 9250-474 is a 470 µH shielded drum core wirewound inductor rated for 92 mA with a maximum DC resistance of 9.5 Ohm. This component operates across the temperature range of -55°C to 105°C and is designed for through-hole axial mounting applications. The 9250-474 is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and production continuity.

Key Parameters

Parameter	Value
Inductance	470 µH
Inductance Tolerance	±10%
Current Rating	92 mA
DC Resistance (Max)	9.5 Ohm
Q @ Frequency	60 @ 790 kHz
Frequency - Self Resonant	5.7 MHz
Shielding	Shielded
Operating Temperature Range	-55°C to 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 eligibility for the 9250-474 is determined by strict alignment of the following electrical and mechanical parameters:

Inductance value: 470 µH with ±10% tolerance
Current rating: 92 mA minimum
DC resistance: 9.5 Ohm maximum
Q factor: 60 @ 790 kHz
Self-resonant frequency: 5.7 MHz
Mounting type: Through hole axial
Physical dimensions: 0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)
Operating temperature range: -55°C to 105°C minimum

Substitute parts are categorized as direct equivalents or similar alternatives based on core construction type and shielding characteristics. Direct equivalents maintain identical electrical performance and physical form factor. Similar alternatives meet all electrical specifications but may differ in construction method or shielding approach.

Parameter Comparison

Part Number	Manufacturer	Series	Type	Inductance	Current Rating	DCR (Max)	Shielding	Operating Temp	Status	RoHS
9250-474	Bourns Inc.	9250	Drum Core, Wirewound	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 105°C	Obsolete	Non-compliant
9250A-474-RC	Bourns Inc.	9250A	Molded	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 125°C	Active	ROHS3 Compliant
MSC60471KT	TE Connectivity Passive Product	MSC60	—	470 µH	92 mA	9.5 Ohm	Unshielded	-55°C to 105°C	Active	ROHS3 Compliant
ER1641-474KM	API Delevan Inc.	ER1641	Molded	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 105°C	Active	Non-compliant
ER1641-474KP	API Delevan Inc.	ER1641	Molded	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 105°C	Active	Non-compliant
ER1641-474KR	API Delevan Inc.	ER1641	Molded	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 105°C	Active	Non-compliant
ER1641-474KS	API Delevan Inc.	ER1641	Molded	470 µH	92 mA	9.5 Ohm	Shielded	-55°C to 105°C	Active	Non-compliant

Engineering Selection Recommendations

The 9250A-474-RC from Bourns Inc. serves as the primary direct equivalent. This part maintains identical electrical specifications and physical dimensions while offering an extended operating temperature range to 125°C. The 9250A-474-RC is active in production status and ROHS3 compliant, addressing regulatory requirements for new designs.

The ER1641 series inductors (ER1641-474KM, ER1641-474KP, ER1641-474KR, ER1641-474KS) from API Delevan Inc. are active alternatives that meet all electrical and mechanical specifications. These parts employ molded construction with ferrite cores and maintain shielding characteristics. All ER1641 variants are available in tape and reel packaging. RoHS compliance status differs from the primary equivalent.

The MSC60471KT from TE Connectivity Passive Product is an active alternative that meets all electrical specifications but differs in shielding approach. This part is unshielded, which may affect electromagnetic interference characteristics in sensitive applications. The MSC60471KT is ROHS3 compliant and available in tape and box packaging.

Selection between these alternatives depends on production requirements, regulatory compliance mandates, and electromagnetic shielding needs specific to the application circuit.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-474-RC directly replace the obsolete 9250-474?

A: Yes. The 9250A-474-RC maintains identical inductance, current rating, DC resistance, and physical dimensions. The extended operating temperature range to 125°C provides additional margin. Both parts are shielded axial inductors with ferrite cores.

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

A: Shielded inductors (9250A-474-RC, ER1641 series) contain electromagnetic shielding that reduces radiated emissions and susceptibility to external magnetic fields. The unshielded MSC60471KT lacks this shielding. Selection depends on circuit layout and electromagnetic compatibility requirements.

Q: Are the ER1641 series parts suitable replacements?

A: The ER1641-474KM, ER1641-474KP, ER1641-474KR, and ER1641-474KS all meet the electrical and mechanical specifications of the 9250-474. These parts use molded construction instead of drum core design but deliver equivalent performance. RoHS compliance status differs from the Bourns alternatives.

Q: What packaging options are available?

A: The 9250A-474-RC is supplied in bulk packaging. The ER1641 series is available in tape and reel packaging. The MSC60471KT is supplied in tape and box packaging. Packaging selection affects handling, storage, and assembly processes.

Q: Does operating temperature range affect part selection?

A: The 9250A-474-RC operates to 125°C, exceeding the original 9250-474 specification of 105°C. The ER1641 series and MSC60471KT maintain the 105°C upper limit. Applications requiring operation above 105°C benefit from the extended range of the 9250A-474-RC.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message