PM1608-221M-RC Equivalent & Substitute Parts

Part Overview

The PM1608-221M-RC is a 220 µH unshielded drum core wirewound inductor manufactured by Bourns Inc., rated for 200 mA continuous current with a maximum DC resistance of 3.2Ohm. This surface mount component operates across the temperature range of -40°C to 125°C and is classified as Active product status. Substitute parts are identified when equivalent electrical characteristics and mechanical compatibility are maintained across the specified parameter set, enabling seamless integration in applications requiring this inductance value and current rating.

Substiute Parts

PM1608-221M-RC

Bourns Inc.In Stock: 1119PM1608-221M-RC Datasheet

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SDR6603-221M

Bourns Inc.In Stock: 1535SDR6603-221M Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the PM1608-221M-RC is determined by strict equivalence across the following critical parameters:

• Inductance value: 220 µH with ±20% tolerance
• Current rating: 200 mA minimum
• DC resistance: 3.2Ohm maximum
• Core material and shielding: Ferrite, unshielded drum core
• Physical dimensions: 0.260" L x 0.175" W (6.60mm x 4.45mm) with maximum seated height of 0.115" (2.92mm)
• Mounting configuration: Surface mount, nonstandard package
• Operating temperature range: -40°C to 125°C
• Regulatory compliance: ROHS3 compliant, MSL 1

The SDR6603-221M meets all substitution criteria, maintaining identical electrical specifications and mechanical compatibility while offering equivalent performance characteristics.

Parameter Comparison

Engineering Selection Recommendations

Both PM1608-221M-RC and SDR6603-221M are Active status products manufactured by Bourns Inc. with full ROHS3 compliance and MSL 1 rating. Selection between these parts may be based on inventory availability, lead time, or supply chain considerations, as electrical and mechanical specifications are fully equivalent. Both components satisfy regulatory requirements for REACH unaffected status and EAR99 export classification.

Frequently Asked Questions (FAQ)

Q: Can SDR6603-221M be used as a direct replacement for PM1608-221M-RC?

A: Yes. Both parts maintain identical inductance (220 µH), current rating (200 mA), DC resistance (3.2Ohm max), core type (ferrite unshielded drum core), physical dimensions (0.260" L x 0.175" W, 6.60mm x 4.45mm), and operating temperature range (-40°C to 125°C). Mechanical and electrical compatibility is complete.

Q: Are there differences in the test frequency specifications?

A: The inductance frequency test differs between parts: PM1608-221M-RC is tested at 796 kHz while SDR6603-221M is tested at 100 kHz. Both maintain the same Q factor of 33 at their respective test frequencies and identical self-resonant frequency of 5.5MHz.

Q: Do both parts meet the same compliance standards?

A: Yes. Both PM1608-221M-RC and SDR6603-221M are ROHS3 compliant, REACH unaffected, classified as EAR99, and carry MSL 1 (unlimited moisture sensitivity level) rating.

Q: What is the significance of the nonstandard package classification?

A: Both parts use identical nonstandard surface mount packages with matching physical dimensions and seated height specifications, ensuring PCB layout and assembly compatibility.