DC780R-224K Equivalent & Substitute Parts

Part Overview

The DC780R-224K is a 220 µH unshielded drum core wirewound inductor manufactured by API Delevan Inc. This through-hole component is rated for 2.8 A continuous current with a maximum DC resistance of 150 mOhm and operates across the temperature range of -55°C to 125°C. The part is currently active in production with 1039 units in stock. Equivalent and substitute parts are identified to support procurement flexibility, inventory management, and supply chain continuity for applications requiring fixed inductance values with identical electrical and mechanical specifications.

Substiute Parts

DC780R-224K

API Delevan Inc.In Stock: 1066DC780R-224K Datasheet

Current PartRFQ

1120-221K-RC

Bourns Inc.In Stock: 12491120-221K-RC Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the DC780R-224K is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Inductance value: 220 µH at 1 kHz test frequency
• Inductance tolerance: ±10%
• Current rating: 2.8 A minimum
• DC resistance: 150 mOhm maximum
• Core material: Ferrite
• Shielding configuration: Unshielded

Mechanical Specifications:

• Mounting type: Through hole
• Package configuration: Radial, vertical cylinder orientation
• Form factor: Drum core wirewound construction

Compliance & Environmental:

• RoHS3 compliance required
• Operating temperature range must encompass or match the specified range

The substitute part 1120-221K-RC from Bourns Inc. meets all electrical and mechanical equivalence criteria. Dimensional variations within standard manufacturing tolerances do not preclude substitution when all functional parameters align.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: DC780R-224K

The DC780R-224K remains the primary specification when the full operating temperature range of -55°C to 125°C is required. This part is actively manufactured by API Delevan Inc., carries ROHS3 compliance certification, and maintains 1039 units in current inventory.

Substitute Selection: 1120-221K-RC

The 1120-221K-RC from Bourns Inc. is a direct functional equivalent for applications where the operating temperature range does not exceed 105°C. This substitute maintains electrical equivalence across all critical parameters: 220 µH inductance, 2.8 A current rating, 150 mOhm maximum DC resistance, ferrite core construction, and unshielded configuration. The part is actively produced, ROHS3 compliant, and available with 1212 units in inventory. Dimensional differences (0.810" diameter vs. 0.772", and 0.840" height vs. 0.831") fall within standard manufacturing tolerances for radial through-hole inductors and do not affect electrical performance or PCB footprint compatibility for standard 0.1" grid layouts.

Temperature Consideration:

Applications operating continuously above 105°C require the DC780R-224K. Applications with maximum operating temperatures at or below 105°C may use either part interchangeably based on procurement availability and cost factors.

Frequently Asked Questions (FAQ)

Q: Can the 1120-221K-RC replace the DC780R-224K in all applications?

A: The 1120-221K-RC is electrically and mechanically equivalent for applications where the maximum operating temperature does not exceed 105°C. The DC780R-224K is required for applications requiring operation up to 125°C. Both parts are through-hole mounted with identical inductance, current rating, and DC resistance specifications.

Q: Are there dimensional compatibility concerns when substituting between these parts?

A: Both parts use radial, vertical cylinder packaging for through-hole mounting. The DC780R-224K measures 0.772" diameter × 0.831" height, while the 1120-221K-RC measures 0.810" diameter × 0.840" height. These dimensional variations are within standard manufacturing tolerances for drum core inductors and do not affect compatibility with standard 0.1" grid PCB layouts or typical component spacing.

Q: Do both parts meet the same compliance standards?

A: Yes. Both the DC780R-224K and 1120-221K-RC are ROHS3 compliant, REACH unaffected, and classified under ECCN EAR99. Both carry equivalent environmental and regulatory certifications.

Q: What is the saturation current specification for the 1120-221K-RC?

A: The saturation current (Isat) specification for the 1120-221K-RC is not provided in the available technical data. The DC780R-224K specifies 7.4 A saturation current. For applications where saturation current is a critical design parameter, the DC780R-224K should be selected or the 1120-221K-RC saturation specification should be obtained from the manufacturer.

Q: How do I determine which part to order for my application?

A: Verify the maximum operating temperature requirement. If the application operates at or below 105°C, either part is suitable based on availability and procurement factors. If the application requires operation above 105°C, specify the DC780R-224K. Both parts deliver identical inductance (220 µH), current handling (2.8 A), and DC resistance (150 mOhm maximum) performance.