Bourns 1120-2R2M Fixed Inductor - Equivalent & Substitute Parts

Part Overview

The Bourns 1120-2R2M is a 2.2 µH unshielded drum core wirewound inductor rated for 11.4 A continuous current with 4 mOhm maximum DC resistance. This through-hole radial component operates across -55°C to 105°C and is designed for applications requiring low inductance values with high current capacity. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications.

Substiute Parts

1120-2R2M

Bourns Inc.In Stock: 8611120-2R2M Datasheet

Current PartRFQ

DC780-222L

API Delevan Inc.In Stock: 701DC780-222L Datasheet

SimilarRFQ

IHB2EB2R2M

Vishay DaleIn Stock: 659IHB2EB2R2M Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the Bourns 1120-2R2M is determined by the following critical parameters:

• Inductance Value: Must be 2.2 µH
• Current Rating: Minimum 11.4 A (equal or higher acceptable)
• DC Resistance: Maximum 4 mOhm
• Core Material: Ferrite
• Shielding: Unshielded
• Mounting Type: Through Hole
• Package Configuration: Radial, Vertical Cylinder

Two substitute parts meet these criteria: the API Delevan DC780-222L and the Vishay Dale IHB2EB2R2M. Both maintain the specified inductance, current capacity, and DC resistance characteristics while offering improved or equivalent performance parameters.

Parameter Comparison

Engineering Selection Recommendations

API Delevan DC780-222L is the primary substitute for the Bourns 1120-2R2M. This part maintains identical inductance and current rating specifications while offering improved inductance tolerance (±15% versus ±20%) and an extended operating temperature range (-55°C to 125°C versus -55°C to 105°C). The part is currently in active production status, ensuring long-term availability. Physical dimensions are comparable, with negligible differences in diameter and height suitable for standard through-hole PCB applications. Both parts carry equivalent RoHS non-compliance and REACH unaffected certifications.

Vishay Dale IHB2EB2R2M serves as a secondary substitute option. This part exceeds the current rating requirement at 15.1 A, providing additional design margin for high-current applications. DC resistance and inductance specifications remain equivalent. Physical dimensions and complete operating temperature range data are not provided in the specification set.

For applications requiring the longest operational lifespan and highest component availability, the API Delevan DC780-222L is the recommended primary choice due to its active product status and extended temperature range.

Frequently Asked Questions (FAQ)

Q: Can the API Delevan DC780-222L directly replace the Bourns 1120-2R2M in existing designs?

A: Yes. Both parts share identical inductance (2.2 µH), current rating (11.4 A), and DC resistance (4 mOhm Max) specifications. Physical dimensions are comparable, and both use ferrite drum core construction with through-hole radial mounting. The improved inductance tolerance and extended temperature range of the DC780-222L provide equivalent or superior performance.

Q: What is the difference between the Vishay Dale IHB2EB2R2M and the other substitutes?

A: The IHB2EB2R2M maintains the same inductance and DC resistance but offers a higher current rating of 15.1 A compared to 11.4 A. This provides additional current capacity margin for applications approaching the original part's rated limits.

Q: Are there any physical compatibility concerns when substituting these parts?

A: The API Delevan DC780-222L has slightly smaller dimensions (0.772" diameter versus 0.810" for the original). Both parts use identical radial, vertical cylinder packaging and through-hole mounting, making them suitable for standard PCB layouts. Verify PCB footprint clearances if space constraints exist.

Q: What is the significance of the inductance tolerance difference?

A: The API Delevan DC780-222L offers ±15% tolerance compared to the Bourns ±20%. This tighter tolerance reduces inductance variation across the production batch, beneficial for applications with strict inductance specifications.

Q: Are compliance certifications equivalent across all three parts?

A: All three parts carry RoHS non-compliance and REACH unaffected certifications. Both the Bourns 1120-2R2M and API Delevan DC780-222L share identical ECCN (EAR99) and HTSUS classifications, confirming regulatory equivalence for export and procurement purposes.