Bourns 9250-562 Equivalent & Substitute Parts

Part Overview

The Bourns 9250-562 is a 5.6 µH shielded drum core wirewound inductor rated for 335 mA with a maximum DC resistance of 720 mOhm. This component is classified as obsolete, making equivalent substitute parts necessary for ongoing design support and procurement. The part operates across a temperature range of -55°C to 105°C and is designed for through-hole axial mounting applications.

Key Parameters

Parameter	Value
Inductance	5.6 µH
Tolerance	±10%
Current Rating	335 mA
DC Resistance (Max)	720 mOhm
Shielding	Shielded
Q @ Frequency	44 @ 7.9 MHz
Self Resonant Frequency	65 MHz
Operating Temperature	-55°C to 105°C
Mounting Type	Through Hole
Package	Axial
Size	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)

Substitute Part Grouping Explanation

Substitution for the Bourns 9250-562 is determined by strict equivalence across the following parameters: inductance value (5.6 µH), tolerance (±10%), current rating (335 mA), DC resistance (720 mOhm maximum), shielding configuration, Q factor (44 @ 7.9 MHz), self-resonant frequency (65 MHz), operating temperature range (-55°C to 105°C), and physical dimensions (0.162" Dia x 0.410" L). All substitute parts must maintain through-hole axial mounting and identical electrical performance characteristics.

The API Delevan ER1641 series parts meet these substitution criteria. ER1641-562KM and ER1641-562KP are shielded molded inductors with iron cores, while ER1641-562KR is an unshielded variant. All three maintain the required inductance, current rating, DC resistance, Q factor, self-resonant frequency, and operating temperature specifications.

Parameter Comparison

Parameter	Bourns 9250-562	API Delevan ER1641-562KM	API Delevan ER1641-562KP	API Delevan ER1641-562KR
Manufacturer	Bourns Inc.	API Delevan Inc.	API Delevan Inc.	API Delevan Inc.
Series	9250	ER1641	ER1641	ER1641 / MIL-PRF-39010/02
Product Status	Obsolete	Active	Active	Active
Type	Drum Core, Wirewound	Molded	Molded	Molded
Core Material	Ferrite	Iron	Iron	Iron
Inductance	5.6 µH	5.6 µH	5.6 µH	5.6 µH
Tolerance	±10%	±10%	±10%	±10%
Current Rating	335 mA	335 mA	335 mA	335 mA
DC Resistance (Max)	720 mOhm	720 mOhm	720 mOhm	720 mOhm
Shielding	Shielded	Shielded	Shielded	Unshielded
Q @ Frequency	44 @ 7.9 MHz	44 @ 7.9 MHz	44 @ 7.9 MHz	44 @ 7.9 MHz
Self Resonant Frequency	65 MHz	65 MHz	65 MHz	65 MHz
Operating Temperature	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C	-55°C to 105°C
Mounting Type	Through Hole	Through Hole	Through Hole	Through Hole
Package / Case	Axial	Axial	Axial	Axial
Size	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)	0.162" Dia x 0.410" L (4.11 mm x 10.41 mm)
Packaging Option	Bulk	Tape & Reel (TR)	Tape & Reel (TR)	Tape & Reel (TR)
RoHS Status	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant	RoHS non-compliant
REACH Status	REACH Unaffected	REACH Unaffected	REACH Unaffected	REACH Unaffected

Engineering Selection Recommendations

All three API Delevan ER1641 variants are active products with current manufacturing status, providing supply continuity for the obsolete Bourns 9250-562. Selection between shielded and unshielded options depends on electromagnetic interference requirements in the application circuit.

For applications requiring shielding to minimize radiated emissions or susceptibility to external fields, ER1641-562KM and ER1641-562KP are direct functional equivalents. Both maintain identical electrical specifications and physical dimensions. The choice between KM and KP variants is determined by packaging requirements: both are supplied in Tape & Reel format with equivalent inventory availability.

For applications where shielding is not required, ER1641-562KR provides an unshielded alternative with identical electrical performance. This variant includes military specification compliance (MIL-PRF-39010/02), offering additional qualification documentation for defense and aerospace applications.

All substitute parts share identical compliance status with the original part: RoHS non-compliant and REACH Unaffected.

Frequently Asked Questions (FAQ)

Q: Can ER1641-562KR (unshielded) replace the shielded Bourns 9250-562 in my design?

A: ER1641-562KR meets all electrical specifications (inductance, current rating, DC resistance, Q factor, frequency response, and temperature range) and physical dimensions. Substitution is valid only if the application does not require electromagnetic shielding. If the original design specified shielding for EMI control, use ER1641-562KM or ER1641-562KP instead.

Q: What is the difference between ER1641-562KM and ER1641-562KP?

A: Both parts are shielded molded inductors with identical electrical and physical specifications. The difference is in packaging designation within the Tape & Reel format. Both are suitable direct replacements for the Bourns 9250-562.

Q: Are the API Delevan ER1641 parts pin-compatible with the Bourns 9250-562?

A: Yes. All substitute parts maintain the same axial through-hole package configuration with identical physical dimensions (0.162" Dia x 0.410" L), ensuring direct board-level compatibility.

Q: Does the core material difference (ferrite vs. iron) affect substitution?

A: The core material difference does not affect substitution validity. All parts deliver the specified inductance value (5.6 µH), tolerance (±10%), Q factor (44 @ 7.9 MHz), and self-resonant frequency (65 MHz) within the operating temperature range. The iron core construction of the ER1641 series maintains electrical equivalence.

Q: What is the inventory status of substitute parts?

A: ER1641-562KM: 1055 pcs in stock; ER1641-562KP: 883 pcs in stock; ER1641-562KR: 949 pcs in stock. All are active products with current manufacturing support.

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