Bourns 1110-120K Equivalent & Substitute Parts

Part Overview

The Bourns 1110-120K is a 12 µH unshielded drum core wirewound inductor rated for 9 A continuous current with a maximum DC resistance of 11 mOhm. This through-hole radial component operates across a temperature range of -55°C to 105°C and is designed for applications requiring fixed inductance in compact form factors.

The 1110-120K carries an obsolete product status. Locating equivalent substitute parts ensures design continuity and maintains supply chain reliability for legacy systems and ongoing production requirements.

Substiute Parts

1110-120K

Bourns Inc.In Stock: 9741110-120K Datasheet

Current PartRFQ

1110-120K-RC

Bourns Inc.In Stock: 18201110-120K-RC Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the 1110-120K is determined by strict equivalence across the following critical parameters:

• Inductance value: 12 µH
• Inductance tolerance: ±10%
• Current rating: 9 A minimum
• DC resistance: 11 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded
• Mounting type: Through hole
• Package geometry: Radial, vertical cylinder orientation
• Operating temperature range: -55°C to 105°C minimum
• Test frequency: 1 kHz

The substitute part 1110-120K-RC meets all electrical and mechanical parameters required for direct substitution. Both parts belong to the Bourns 1110 series and maintain identical electrical performance specifications.

Parameter Comparison

Engineering Selection Recommendations

The 1110-120K-RC serves as the direct substitute for the obsolete 1110-120K. Both parts maintain identical electrical and mechanical specifications across all critical parameters. The primary distinction lies in product status and regulatory compliance.

The 1110-120K-RC is an active product with ROHS3 compliance, whereas the original 1110-120K is obsolete and RoHS non-compliant. For new designs or ongoing production requiring regulatory alignment with current environmental standards, the 1110-120K-RC is the appropriate selection. Both parts are manufactured by Bourns Inc. within the 1110 series and provide equivalent performance in through-hole applications.

Frequently Asked Questions (FAQ)

Q: Can the 1110-120K-RC replace the 1110-120K in existing designs?

A: Yes. The 1110-120K-RC is electrically and mechanically equivalent to the 1110-120K. All critical parameters including inductance, current rating, DC resistance, core material, shielding, mounting type, package geometry, and operating temperature range are identical. Direct substitution is possible without circuit modification.

Q: What is the difference between the 1110-120K and 1110-120K-RC?

A: The primary differences are product status and regulatory compliance. The 1110-120K is obsolete and RoHS non-compliant. The 1110-120K-RC is an active product with ROHS3 compliance. Electrical and mechanical specifications are identical.

Q: Are there packaging differences between these parts?

A: The 1110-120K is supplied in standard packaging, while the 1110-120K-RC is supplied in bulk packaging. Both maintain the same radial, vertical cylinder form factor with identical physical dimensions of 0.660" diameter and 0.840" maximum height.

Q: What parameters must match for substitution eligibility?

A: Substitution requires equivalence in inductance (12 µH), tolerance (±10%), current rating (9 A), DC resistance (11 mOhm maximum), core material (ferrite), shielding (unshielded), mounting type (through hole), package geometry (radial, vertical cylinder), operating temperature range (-55°C to 105°C), and test frequency (1 kHz).

Q: Is the 1110-120K-RC suitable for new production designs?

A: Yes. The 1110-120K-RC is an active product with current manufacturing support and ROHS3 compliance, making it appropriate for new designs and ongoing production applications.