SDR1005-221K Equivalent & Substitute Parts

Part Overview

The SDR1005-221K is a 220 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 700 mA continuous current with a maximum DC resistance of 780 mOhm. This component is classified as obsolete, making equivalent and substitute parts necessary for ongoing design support and procurement continuity. The part operates across the temperature range of -40°C to 125°C and is ROHS3 compliant.

Substiute Parts

SDR1005-221K

Bourns Inc.In Stock: 901SDR1005-221K Datasheet

Current PartRFQ

SDR1005-221KL

Bourns Inc.In Stock: 6221SDR1005-221KL Datasheet

DirectRFQ

P0752.224NL

Pulse ElectronicsIn Stock: 3989P0752.224NL Datasheet

SimilarRFQ

P0752.224NLT

Pulse ElectronicsIn Stock: 5104P0752.224NLT Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the SDR1005-221K is determined by the following critical parameters:

• Inductance Value: 220 µH (exact match required)
• Current Rating: Minimum 700 mA continuous current capability
• DC Resistance: Maximum 780 mOhm to maintain circuit performance
• Core Configuration: Unshielded wirewound construction
• Mounting: Surface mount, nonstandard package
• Environmental Compliance: ROHS3 compliance and operating temperature range compatibility

The substitute parts identified maintain the core inductance specification and unshielded wirewound topology. Variations in tolerance, saturation current, and DCR are within acceptable engineering margins for this product category.

Parameter Comparison

Engineering Selection Recommendations

SDR1005-221KL is the primary direct substitute. This part is manufactured by Bourns Inc. under the same base product number (SDR1005) and maintains identical electrical specifications including inductance tolerance (±10%), current rating (700 mA), and DC resistance (780 mOhm Max). The only difference is packaging format (Tape & Reel vs. bulk), and the part carries Active product status with higher inventory availability (6200 pcs vs. 799 pcs).

P0752.224NL and P0752.224NLT are functionally equivalent alternatives from Pulse Electronics. Both parts maintain the 220 µH inductance and unshielded wirewound construction. These parts feature higher current ratings (800 mA vs. 700 mA) and extended operating temperature range (-40°C to 130°C vs. -40°C to 125°C). The trade-off is a wider inductance tolerance (±20% vs. ±10%) and slightly higher DC resistance (840 mOhm vs. 780 mOhm). Both are Active status products with substantial inventory. The P0752.224NLT variant includes Tape & Reel packaging.

All substitute parts maintain ROHS3 compliance and are suitable for direct circuit substitution where the specified parameter variations are acceptable to the application.

Frequently Asked Questions (FAQ)

Q: Can SDR1005-221KL be used as a direct replacement for SDR1005-221K?

A: Yes. SDR1005-221KL is a direct equivalent manufactured by the same supplier (Bourns Inc.) with identical electrical specifications. The only difference is packaging format. The part is Active status with higher inventory availability.

Q: What are the key differences between Bourns and Pulse Electronics substitutes?

A: The Pulse Electronics P0752.224NL and P0752.224NLT parts maintain the same 220 µH inductance and unshielded wirewound topology. They offer higher current ratings (800 mA vs. 700 mA) and extended temperature range (-40°C to 130°C). The inductance tolerance is wider (±20% vs. ±10%) and DC resistance is slightly higher (840 mOhm vs. 780 mOhm).

Q: Are the Pulse Electronics parts suitable for applications requiring ±10% inductance tolerance?

A: The P0752.224NL and P0752.224NLT parts carry ±20% inductance tolerance. Applications requiring ±10% tolerance should use SDR1005-221KL for specification compliance.

Q: What is the difference between P0752.224NL and P0752.224NLT?

A: Both parts are electrically identical. P0752.224NL is supplied in bulk packaging, while P0752.224NLT is supplied in Tape & Reel (TR) format for automated assembly processes.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. SDR1005-221KL, P0752.224NL, and P0752.224NLT are all ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited).

Q: Can I use a substitute part with higher DC resistance (840 mOhm vs. 780 mOhm)?

A: The 60 mOhm difference represents approximately 7.7% higher resistance. Circuit impact depends on application requirements. Verify that increased resistive losses are acceptable for your specific design.