300NS-R22M=P2 Equivalent & Substitute Parts

Part Overview

The 300NS-R22M=P2 is a fixed inductor manufactured by Toko America Inc., classified as a surface mount component in the 1812 (4532 Metric) package. This inductor is rated at 0.22 µH typical inductance and is designed for SMD applications. The part is currently listed as obsolete, making identification of functionally equivalent alternatives necessary for ongoing design support, legacy system maintenance, and component procurement.

Substiute Parts

300NS-R22M=P2

Toko America Inc.In Stock: 1004300NS-R22M=P2 Datasheet

Current PartRFQ

CM453232-R22KL

Bourns Inc.In Stock: 2431CM453232-R22KL Datasheet

SimilarRFQ

CM453232-R22ML

Bourns Inc.In Stock: 24407CM453232-R22ML Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the 300NS-R22M=P2 is based on the following critical parameters that must align across components:

Primary Matching Criteria:

• Inductance value: 220 nH (0.22 µH)
• Package / Case: 1812 (4532 Metric)
• Mounting Type: Surface Mount
• Physical dimensions: 0.177" L x 0.126" W (4.50 mm x 3.20 mm)

Secondary Compatibility Factors:

• Moisture Sensitivity Level: MSL 1 (Unlimited)
• ECCN classification: EAR99
• HTSUS code: 8504.50.8000

The substitute parts CM453232-R22KL and CM453232-R22ML, both manufactured by Bourns Inc., satisfy all primary matching criteria. Both are active products with identical inductance values (220 nH), identical package specifications (1812 / 4532 Metric), and identical physical dimensions. Both are surface mount components with MSL 1 rating and matching export classifications.

Parameter Comparison

Engineering Selection Recommendations

Compliance and Product Status Considerations:

The 300NS-R22M=P2 is obsolete and RoHS non-compliant. Both substitute parts (CM453232-R22KL and CM453232-R22ML) are active products with ROHS3 compliance, providing regulatory alignment for new designs and ongoing procurement.

Physical Compatibility:

Both substitute parts maintain identical footprint dimensions (0.177" L x 0.126" W / 4.50 mm x 3.20 mm) and are compatible with existing PCB layouts designed for the 1812 (4532 Metric) package. The maximum seated height increases from 0.126" (3.20 mm) to 0.134" (3.40 mm), which must be verified against clearance constraints in the target application.

Electrical Equivalence:

Both substitute parts deliver the specified 220 nH inductance value with defined tolerances (±10% for CM453232-R22KL, ±20% for CM453232-R22ML). The CM453232-R22KL offers tighter tolerance control for applications requiring higher precision. Both parts provide specified current ratings (665 mA) and DC resistance (250 mOhm Max), parameters not documented for the original part.

Selection Criteria:

• CM453232-R22KL: Select for applications requiring ±10% inductance tolerance and tighter performance specifications.
• CM453232-R22ML: Select for applications tolerating ±20% inductance variance; higher inventory availability (24,370 pcs vs. 2,409 pcs) supports extended procurement timelines.

Frequently Asked Questions (FAQ)

Q: Can CM453232-R22KL and CM453232-R22ML be used interchangeably with 300NS-R22M=P2?

A: Both Bourns parts are electrically and mechanically compatible substitutes. The primary difference is inductance tolerance: CM453232-R22KL specifies ±10% tolerance, while CM453232-R22ML specifies ±20% tolerance. Selection depends on circuit tolerance requirements.

Q: What is the impact of the increased height (3.40 mm vs. 3.20 mm) on PCB assembly?

A: The 0.008" (0.20 mm) height increase must be verified against component clearance specifications in the target application, including solder reflow profiles and adjacent component placement. PCB layout review is required to confirm compatibility.

Q: Are the substitute parts RoHS compliant?

A: Yes. Both CM453232-R22KL and CM453232-R22ML are ROHS3 compliant, whereas the original 300NS-R22M=P2 is RoHS non-compliant. This compliance upgrade supports regulatory requirements for new designs and markets with RoHS mandates.

Q: What are the current rating specifications for the substitute parts?

A: Both CM453232-R22KL and CM453232-R22ML are rated for 665 mA continuous current with a maximum DC resistance of 250 mOhm. These specifications were not documented for the original part.

Q: How do the operating temperature ranges compare?

A: The substitute parts operate across -40°C to 125°C. Operating temperature specifications for the original 300NS-R22M=P2 were not provided in available documentation.

Q: Which substitute part should be selected for new designs?

A: For new designs, either substitute part is acceptable based on circuit tolerance requirements. CM453232-R22ML is recommended for standard applications due to higher inventory availability. CM453232-R22KL is recommended when ±10% inductance tolerance is a design requirement.