Equivalent & Substitute Parts for 9250-124-RC

Part Overview

The Bourns 9250-124-RC is a 120 µH shielded drum core wirewound inductor rated for 150 mA with a maximum DC resistance of 3.6Ω. 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 9250-124-RC is classified as obsolete. Equivalent and substitute parts are necessary to maintain design continuity and ensure component availability for new production runs and field replacements.

Substiute Parts

9250-124-RC

Bourns Inc.In Stock: 9629250-124-RC Datasheet

Current PartRFQ

9250A-124-RC

Bourns Inc.In Stock: 10289250A-124-RC Datasheet

DirectRFQ

ER1641-124KM

API Delevan Inc.In Stock: 1271ER1641-124KM Datasheet

SimilarRFQ

ER1641-124KP

API Delevan Inc.In Stock: 1084ER1641-124KP Datasheet

SimilarRFQ

ER1641-124KR

API Delevan Inc.In Stock: 714ER1641-124KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

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

• Inductance value: 120 µH
• Inductance tolerance: ±10%
• Current rating: 150 mA
• DC resistance: 3.6Ω Max
• Shielding configuration: Shielded or Unshielded (application-dependent)
• Operating temperature range: Minimum -55°C to 105°C
• Mounting type: Through Hole Axial
• Physical dimensions: 0.162" Dia x 0.410" L (4.11mm x 10.41mm)
• Core material: Ferrite
• Q factor and self-resonant frequency characteristics

Substitute parts are grouped into two categories:

Direct Equivalent (Same Manufacturer): 9250A-124-RC from Bourns Inc. maintains identical electrical specifications with updated construction (molded vs. drum core) and extended temperature range to 125°C.

Cross-Manufacturer Equivalents (API Delevan ER1641 Series): ER1641-124KM, ER1641-124KP, and ER1641-124KR meet all core electrical parameters. ER1641-124KR is unshielded and suitable only for applications where shielding is not required.

Parameter Comparison

Engineering Selection Recommendations

9250A-124-RC (Bourns Inc.): This is the primary recommended substitute. It is an active product from the same manufacturer with identical electrical specifications and physical dimensions. The molded construction provides equivalent performance to the original drum core design. The extended operating temperature range to 125°C offers additional thermal margin. ROHS3 compliance is maintained. This part is suitable for direct replacement in all applications where the 9250-124-RC was originally specified.

ER1641-124KM and ER1641-124KP (API Delevan Inc.): These cross-manufacturer equivalents meet all electrical and mechanical requirements for shielded applications. Both are active products with identical specifications. Selection between these two variants should be based on packaging requirements (Tape & Reel format). RoHS non-compliance must be evaluated against design and regulatory requirements. These parts are suitable for applications where electromagnetic shielding is required.

ER1641-124KR (API Delevan Inc.): This unshielded variant meets all electrical specifications but differs in shielding configuration. It is suitable only for applications where electromagnetic shielding is not a functional requirement. RoHS non-compliance applies. Military specification compliance (MIL-PRF-39010/03) may be relevant for specific applications.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-124-RC be used as a direct replacement for the 9250-124-RC?

A: Yes. The 9250A-124-RC is electrically and mechanically equivalent to the 9250-124-RC. Both maintain 120 µH inductance, 150 mA current rating, 3.6Ω maximum DC resistance, and identical physical dimensions. The primary differences are construction method (molded vs. drum core) and extended temperature range (125°C vs. 105°C maximum). Both are shielded ferrite core inductors suitable for through-hole axial mounting.

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

A: Shielded inductors (9250-124-RC, 9250A-124-RC, ER1641-124KM, ER1641-124KP) contain electromagnetic shielding to minimize radiated emissions and susceptibility to external magnetic fields. The unshielded variant (ER1641-124KR) lacks this shielding. Selection depends on circuit layout and electromagnetic compatibility requirements. Shielded variants are recommended for noise-sensitive applications.

Q: Are API Delevan ER1641 series parts compatible with Bourns 9250 series designs?

A: Yes, for electrical and mechanical compatibility. All ER1641 variants maintain the same inductance (120 µH), current rating (150 mA), DC resistance (3.6Ω), and physical dimensions (0.162" Dia x 0.410" L). However, RoHS compliance status differs. The ER1641 series is RoHS non-compliant, which may impact design certification and regulatory compliance depending on application requirements.

Q: What packaging options are available for substitute parts?

A: The 9250A-124-RC is supplied in Bulk packaging. The ER1641 series (ER1641-124KM, ER1641-124KP, ER1641-124KR) is supplied in Tape & Reel (TR) format. Packaging selection should align with production volume and assembly process requirements.

Q: Does operating temperature range affect substitution eligibility?

A: The 9250A-124-RC extends the maximum operating temperature to 125°C compared to 105°C for the original 9250-124-RC and API Delevan ER1641 variants. For applications operating at or near 105°C, all parts are equivalent. For applications requiring operation above 105°C, the 9250A-124-RC is the only suitable option among the listed substitutes.

Q: Can ER1641-124KR be used in place of shielded variants?

A: Only if electromagnetic shielding is not a functional requirement. The ER1641-124KR is electrically equivalent but lacks the shielding present in other variants. Use of an unshielded part in a design requiring shielding may result in increased electromagnetic emissions or susceptibility to external interference.