Equivalent & Substitute Parts for 9310-44-RC

Part Overview

The Bourns 9310-44-RC is a 22 µH unshielded drum core wirewound inductor rated for 265 mA with a maximum DC resistance of 2.5 Ohm. This through-hole axial component operates across -55°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for production and repair applications.

Substiute Parts

9310-44-RC

Bourns Inc.In Stock: 8599310-44-RC Datasheet

Current PartRFQ

B78108S1223K000

EPCOS - TDK ElectronicsIn Stock: 16517B78108S1223K000 Datasheet

DirectRFQ

1537R-44K

API Delevan Inc.In Stock: 8271537R-44K Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the 9310-44-RC is determined by the following critical parameters: inductance value (22 µH), tolerance (±10%), mounting type (through hole axial), shielding configuration (unshielded), and operating temperature range (-55°C ~ 105°C). The substitute parts are grouped into two categories based on their compatibility with these core requirements:

Direct Substitute (B78108S1223K000): Matches inductance, tolerance, mounting type, package style, and shielding. Exceeds current rating capability (560 mA vs. 265 mA) and provides lower DC resistance (740 mOhm vs. 2.5 Ohm), making it suitable for applications where the original part's electrical characteristics are required with improved performance margins.

Similar Substitute (1537R-44K): Matches inductance, tolerance, DC resistance, mounting type, package style, shielding, and operating temperature range. Differs in core material (iron vs. ferrite) and current rating (202 mA vs. 265 mA). This part is suitable for applications where the original DC resistance and thermal characteristics are critical, though current capacity is reduced.

Parameter Comparison

Engineering Selection Recommendations

B78108S1223K000 is recommended as the primary substitute for new designs and production applications. This part is active in production, ROHS3 compliant, and provides superior electrical performance with higher current rating and lower DC resistance. The ferrite core material matches the original specification.

1537R-44K is recommended for applications where the original DC resistance specification (2.5 Ohm) and operating temperature range (-55°C ~ 105°C) are critical design requirements. This part maintains electrical equivalence to the original 9310-44-RC and is active in production with ROHS3 compliance. The iron core material and reduced current rating (202 mA) must be evaluated against circuit requirements.

Both substitute parts are ROHS3 compliant and available in active production status, ensuring long-term supply chain reliability compared to the obsolete original part.

Frequently Asked Questions (FAQ)

Q: Can B78108S1223K000 be used as a direct replacement for 9310-44-RC?

A: Yes. Both parts share the same inductance (22 µH), tolerance (±10%), core shielding (unshielded), mounting type (through hole), and axial package configuration. The B78108S1223K000 provides higher current rating (560 mA vs. 265 mA) and lower DC resistance (740 mOhm vs. 2.5 Ohm), making it electrically compatible with improved performance margins.

Q: What is the difference between B78108S1223K000 and 1537R-44K?

A: B78108S1223K000 uses ferrite core material with 560 mA current rating and 740 mOhm DCR. 1537R-44K uses iron core material with 202 mA current rating and 2.5 Ohm DCR. Both maintain 22 µH inductance and ±10% tolerance. Selection depends on whether circuit design prioritizes lower DC resistance (1537R-44K) or higher current capacity (B78108S1223K000).

Q: Is operating temperature range specified for B78108S1223K000?

A: Operating temperature range is not provided in the available data for B78108S1223K000. For applications requiring -55°C to 105°C operation, 1537R-44K is the recommended substitute as it explicitly specifies this temperature range.

Q: Are both substitute parts RoHS compliant?

A: Yes. Both B78108S1223K000 and 1537R-44K are ROHS3 compliant, matching the compliance status of the original 9310-44-RC.

Q: What is the physical size difference between these parts?

A: 9310-44-RC and 1537R-44K share identical dimensions (0.156" Dia x 0.375" L / 3.96mm x 9.53mm). B78108S1223K000 has slightly different dimensions (0.157" Dia x 0.362" L / 4.00mm x 9.20mm), which may affect board layout in space-constrained applications.