Bourns 9250-684 680µH Shielded Drum Core Wirewound Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 9250-684 is a 680 µH shielded drum core wirewound inductor rated for 80 mA with a maximum DC resistance of 11.8Ω. This through-hole axial component operates across -55°C to 105°C and features ferrite core construction with ±10% inductance tolerance. The part is classified as obsolete, making equivalent substitutes necessary for new designs and ongoing production requirements. Substitute parts maintain identical electrical specifications while offering improved product status and compliance certifications.

Substiute Parts

9250-684

Bourns Inc.In Stock: 9579250-684 Datasheet

Current PartRFQ

9250A-684-RC

Bourns Inc.In Stock: 15739250A-684-RC Datasheet

DirectRFQ

ER1641-684KM

API Delevan Inc.In Stock: 1155ER1641-684KM Datasheet

SimilarRFQ

ER1641-684KP

API Delevan Inc.In Stock: 1216ER1641-684KP Datasheet

SimilarRFQ

ER1641-684KR

API Delevan Inc.In Stock: 777ER1641-684KR Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict equivalence across the following critical parameters: inductance value (680 µH), inductance tolerance (±10%), current rating (80 mA), DC resistance (11.8Ω maximum), core material (ferrite), shielding (shielded), mounting type (through hole), and package style (axial). All substitute parts listed maintain these specifications without deviation.

The 9250-684 substitutes are categorized into two groups:

Direct Manufacturer Substitute (Bourns): The 9250A-684-RC represents the active production equivalent from the original manufacturer, transitioning from drum core to molded construction while preserving all electrical parameters.

Cross-Manufacturer Substitutes (API Delevan): The ER1641 series (ER1641-684KP, ER1641-684KM, ER1641-684KR) provides functionally equivalent alternatives from a different manufacturer, maintaining identical electrical specifications and physical dimensions.

Parameter Comparison

Engineering Selection Recommendations

For RoHS3 Compliance Requirements: The 9250A-684-RC is the sole substitute meeting ROHS3 compliance certification. This part is recommended for applications subject to RoHS3 regulatory requirements or customer specifications mandating compliant components.

For Active Product Status: All substitute parts (9250A-684-RC, ER1641-684KP, ER1641-684KM, ER1641-684KR) maintain active product status, ensuring continued availability and manufacturing support. The obsolete 9250-684 should be replaced in new designs.

For Extended Temperature Operation: The 9250A-684-RC extends the upper operating temperature limit to 125°C compared to 105°C for the original part and API Delevan alternatives. This provides additional thermal margin for applications approaching temperature limits.

For Packaging Flexibility: The 9250A-684-RC is supplied in bulk packaging, while ER1641 series parts are available in tape and reel format. Packaging selection depends on assembly process requirements and order quantities.

Frequently Asked Questions (FAQ)

Q: Can the 9250A-684-RC directly replace the 9250-684 in existing designs?

A: Yes. The 9250A-684-RC maintains identical electrical specifications (680 µH, 80 mA, 11.8Ω DCR) and physical dimensions (0.162" Dia × 0.410" L). The transition from drum core to molded construction does not affect circuit performance. The extended operating temperature range (-55°C to 125°C) provides additional capability.

Q: What is the difference between the Bourns 9250A-684-RC and API Delevan ER1641 series substitutes?

A: Both maintain equivalent electrical performance and physical dimensions. The primary differences are manufacturer origin and RoHS compliance status. The 9250A-684-RC is ROHS3 compliant, while ER1641 series parts are RoHS non-compliant. All parts are functionally interchangeable based on provided specifications.

Q: Are there differences among the three ER1641 variants (KP, KM, KR)?

A: The ER1641-684KP, ER1641-684KM, and ER1641-684KR are electrically and mechanically identical. The suffix designations reflect internal API Delevan classification codes. All three are supplied in tape and reel packaging and maintain identical specifications for circuit substitution purposes.

Q: Which substitute is recommended for new production designs?

A: The 9250A-684-RC is the primary recommendation for new designs, as it is the active production equivalent from the original manufacturer with ROHS3 compliance. ER1641 series parts serve as secondary alternatives when Bourns supply is constrained or when cross-manufacturer sourcing is preferred.

Q: Does the saturation current specification affect substitution eligibility?

A: The saturation current (50 mA for 9250-684 and 9250A-684-RC) is not specified for ER1641 series parts in the provided data. However, all parts maintain the same 80 mA current rating and 11.8Ω maximum DC resistance, which are the controlling parameters for circuit operation. The absence of saturation current data for ER1641 parts does not preclude substitution when electrical specifications are equivalent.

Q: What packaging considerations apply when selecting between substitutes?

A: The 9250A-684-RC is supplied in bulk packaging, suitable for manual assembly or small-volume production. ER1641 series parts are supplied in tape and reel format, optimized for automated pick-and-place assembly. Packaging selection should align with assembly process capabilities and order volume requirements.