Bourns 2318-H 330µH Toroidal Inductor Equivalent & Substitute Parts

Part Overview

The Bourns 2318-H is a 330µH unshielded toroidal inductor rated for 5.2A continuous current with 67mOhm maximum DC resistance. This through-hole component features an iron powder core and operates across the -55°C to 105°C temperature range. The 2318-H carries obsolete product status, making identification of active equivalent parts essential for ongoing design support and procurement continuity.

Substiute Parts

2318-H

Bourns Inc.In Stock: 7312318-H Datasheet

Current PartRFQ

2318-H-RC

Bourns Inc.In Stock: 9102318-H-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

The 2318-H-RC qualifies as a direct functional equivalent based on identical electrical and mechanical specifications. Substitution validity is determined by the following parameters:

• Inductance value: 330 µH (exact match)
• Inductance tolerance: ±15% (exact match)
• Current rating: 5.2 A (exact match)
• DC resistance: 67 mOhm maximum (exact match)
• Core material: Iron Powder (exact match)
• Shielding configuration: Unshielded (exact match)
• Mounting type: Through Hole (exact match)
• Package geometry: Radial, Horizontal (Open) (exact match)
• Operating temperature: -55°C to 105°C (exact match)
• Physical dimensions: 1.280" diameter × 0.650" height (exact match)

The 2318-H-RC maintains all critical electrical performance characteristics and physical form factor compatibility with the obsolete 2318-H, enabling direct substitution in existing designs.

Parameter Comparison

Engineering Selection Recommendations

The 2318-H-RC is the appropriate selection for new designs and ongoing production requiring the 330µH, 5.2A toroidal inductor specification. The substitute part maintains active product status with Bourns Inc., ensuring long-term availability and supply chain stability.

The 2318-H-RC achieves ROHS3 compliance, whereas the original 2318-H is non-compliant. This compliance upgrade aligns with current regulatory requirements for electronic component procurement in regulated industries and markets with RoHS mandates.

Both parts share identical REACH and ECCN classifications, confirming equivalent regulatory treatment for export and supply chain purposes.

Frequently Asked Questions (FAQ)

Q: Can the 2318-H-RC directly replace the 2318-H in existing circuit designs?

A: Yes. The 2318-H-RC provides identical electrical performance (330µH inductance, 5.2A rating, 67mOhm DCR) and physical form factor (1.280" diameter, 0.650" height, radial through-hole mounting). No circuit modifications are required.

Q: What is the difference between the 2318-H and 2318-H-RC?

A: The primary differences are product status and RoHS compliance. The 2318-H is obsolete and RoHS non-compliant. The 2318-H-RC is active production and ROHS3 compliant. All electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The 2318-H ships in standard packaging, while the 2318-H-RC is supplied in bulk packaging. Both maintain the same radial, horizontal (open) through-hole configuration and physical dimensions.

Q: Does the RoHS3 compliance of the 2318-H-RC affect circuit performance?

A: No. RoHS3 compliance reflects material composition changes to eliminate restricted substances. Electrical performance, inductance value, current rating, and DC resistance remain unchanged.

Q: Are both parts suitable for the -55°C to 105°C operating temperature range?

A: Yes. Both the 2318-H and 2318-H-RC are rated for -55°C to 105°C continuous operation.