1120-220K Equivalent & Substitute Parts Reference

Part Overview

The Bourns 1120-220K is a 22 µH unshielded drum core wirewound inductor rated for 7.2 A continuous current with 19 mOhm maximum DC resistance. This through-hole radial component operates across -55°C to 105°C and is designed for applications requiring fixed inductance in power conversion and filtering circuits.

The 1120-220K carries an obsolete product status. Identifying equivalent substitute parts ensures design continuity and supply chain reliability for legacy system maintenance and new production runs requiring compatible inductance characteristics.

Substiute Parts

1120-220K

Bourns Inc.In Stock: 8241120-220K Datasheet

Current PartRFQ

DC780-223K

API Delevan Inc.In Stock: 1197DC780-223K Datasheet

SimilarRFQ

IHB2BV220K

Vishay DaleIn Stock: 814IHB2BV220K Datasheet

SimilarRFQ

IHB2EB220K

Vishay DaleIn Stock: 905IHB2EB220K Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 1120-220K are qualified based on the following critical parameters:

• Inductance Value: 22 µH ±10% tolerance
• Current Rating: Minimum 6.9 A (acceptable for applications designed for 7.2 A nominal)
• DC Resistance: 19 mOhm maximum
• Core Material: Ferrite
• Shielding Configuration: Unshielded
• Mounting: Through-hole radial vertical cylinder package
• Inductance Measurement Frequency: 1 kHz

All qualified substitutes maintain these electrical and mechanical specifications within acceptable engineering tolerances for direct board-level replacement.

Parameter Comparison

Engineering Selection Recommendations

DC780-223K (API Delevan Inc.) is the primary substitute for the 1120-220K. This part maintains identical electrical specifications (22 µH, 7.2 A, 19 mOhm DCR) with active product status and extended operating temperature range (-55°C to 125°C). The DC780-223K provides superior long-term availability and supply chain stability compared to the obsolete 1120-220K.

IHB2BV220K and IHB2EB220K (Vishay Dale) are secondary substitutes suitable for applications where the 6.9 A current rating is acceptable. Both parts maintain the 22 µH inductance, 19 mOhm DCR, and unshielded ferrite drum core configuration. These options provide alternative sourcing channels when DC780-223K availability is constrained.

Selection priority is determined by current requirement tolerance, supply availability, and compliance requirements for the target application.

Frequently Asked Questions (FAQ)

Q: Can the IHB2BV220K or IHB2EB220K replace the 1120-220K in applications requiring 7.2 A continuous current?

A: The IHB2BV220K and IHB2EB220K are rated for 6.9 A continuous current, which is 0.3 A below the 1120-220K specification. Substitution is acceptable only if the actual application current requirement does not exceed 6.9 A. Verify circuit current draw before selection.

Q: What is the primary advantage of the DC780-223K over the 1120-220K?

A: The DC780-223K maintains identical electrical performance while offering active product status and extended operating temperature range (125°C maximum versus 105°C). This ensures long-term availability and broader thermal operating envelope.

Q: Are all substitute parts physically compatible with the original 1120-220K PCB footprint?

A: All qualified substitutes use through-hole radial vertical cylinder packages. Physical compatibility depends on specific board layout dimensions. The DC780-223K has slightly different physical dimensions (0.772" diameter, 0.831" height) compared to the 1120-220K (0.810" diameter, 0.840" height). Verify PCB hole spacing and component clearance before board-level substitution.

Q: Do the substitute parts meet the same RoHS compliance as the 1120-220K?

A: The 1120-220K and DC780-223K are both RoHS non-compliant. Compliance status for IHB2BV220K and IHB2EB220K is not specified in available documentation. Verify RoHS requirements with the target application specification before final part selection.

Q: What is the saturation current (Isat) for the 1120-220K?

A: Saturation current is not specified for the 1120-220K. The DC780-223K specifies 23.3 A Isat. For applications requiring saturation current data, the DC780-223K provides this additional performance characteristic.