0603USB-951MLC Equivalent & Substitute Parts

Part Overview

The 0603USB-951MLC is a 2-line common mode choke manufactured by Coilcraft, designed for surface mount applications in signal line filtering. This component operates at 63 nH @ 100 MHz with an impedance of 300 Ohms @ 2.6 GHz and supports a maximum current rating of 500mA. The part is actively produced and maintains full RoHS3 compliance with unlimited moisture sensitivity rating (MSL 1). Equivalent and substitute parts are identified based on matching functional categories, electrical performance parameters, and mechanical compatibility within the common mode choke product family.

Substiute Parts

0603USB-951MLC

CoilcraftIn Stock: 29610603USB-951MLC Datasheet

Current PartRFQ

ACM2012-900-2P-T001

TDK CorporationIn Stock: 20248ACM2012-900-2P-T001 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the 0603USB-951MLC are identified based on the following critical parameters that define functional equivalence within the 2-line common mode choke category:

Primary Matching Criteria:

• Filter Type: Signal Line
• Number of Lines: 2
• Mounting Type: Surface Mount
• Package Configuration: Horizontal, 4 PC Pad
• Operating Temperature Range: -40°C ~ 105°C
• RoHS3 Compliance and MSL 1 rating

Secondary Performance Parameters:

• Current Rating (Max): Substitute must support minimum 400mA to 500mA range
• DC Resistance (DCR): Acceptable range 142mOhm to 190mOhm
• Impedance characteristics: Measured at frequency points within common mode choke specifications
• Physical dimensions: Compatible with 0603 form factor and surface mount assembly

The ACM2012-900-2P-T001 from TDK Corporation qualifies as a substitute based on matching filter type, line configuration, mounting method, temperature range, and regulatory compliance. Impedance and current rating variations reflect design differences within the common mode choke product category while maintaining functional compatibility for signal line applications.

Parameter Comparison

Engineering Selection Recommendations

Both the 0603USB-951MLC and ACM2012-900-2P-T001 are actively produced components with full RoHS3 compliance and REACH unaffected status, making them suitable for applications requiring regulatory adherence. The selection between these parts depends on circuit-specific requirements:

0603USB-951MLC Selection Criteria:

• Applications requiring 500mA current capacity
• Systems where lower DC resistance (142mOhm) is specified
• Designs utilizing Coilcraft component qualification

ACM2012-900-2P-T001 Selection Criteria:

• Applications with 400mA maximum current requirements
• Systems where 50V DC voltage rating is applicable
• Designs utilizing TDK component qualification and AEC-Q200 automotive compliance

Both components share identical operating temperature range (-40°C ~ 105°C), MSL 1 rating, and surface mount package configuration, ensuring mechanical and thermal compatibility in assembly processes. Component selection should be based on specific circuit current demands and voltage specifications rather than general substitution assumptions.

Frequently Asked Questions (FAQ)

Q: Can the ACM2012-900-2P-T001 directly replace the 0603USB-951MLC in all applications?

A: Direct replacement depends on circuit current requirements. The ACM2012-900-2P-T001 supports 400mA maximum current, while the 0603USB-951MLC supports 500mA. Applications requiring current above 400mA must use the 0603USB-951MLC. Both components share identical operating temperature range and surface mount package configuration.

Q: What are the key differences in electrical performance between these parts?

A: The 0603USB-951MLC provides 300 Ohms impedance @ 2.6 GHz with 63 nH @ 100 MHz and 142mOhm DCR. The ACM2012-900-2P-T001 provides 90 Ohms impedance @ 100 MHz with 190mOhm DCR. These differences reflect distinct design approaches within the common mode choke category and should be evaluated against specific circuit filtering requirements.

Q: Are both components suitable for high-temperature applications?

A: Both components operate across the identical temperature range of -40°C ~ 105°C, making them equally suitable for applications within this specification. Operating temperature range does not differentiate these parts.

Q: What is the significance of the MSL 1 rating for both components?

A: MSL 1 (Moisture Sensitivity Level 1) indicates unlimited shelf life without moisture bake requirements prior to assembly. Both components share this rating, eliminating moisture handling as a differentiation factor in component selection.

Q: Do both components meet the same regulatory compliance standards?

A: Both components are RoHS3 compliant and REACH unaffected. Regulatory compliance is equivalent between the two parts. The ACM2012-900-2P-T001 carries additional AEC-Q200 automotive qualification, which may be required for specific applications.

Q: How do the physical dimensions compare between these parts?

A: The 0603USB-951MLC measures 0.060" L x 0.030" W x 0.046" H (1.52mm x 0.76mm x 1.17mm). The ACM2012-900-2P-T001 measures 0.079" L x 0.047" W x 0.051" H (2.00mm x 1.20mm x 1.30mm). The ACM2012-900-2P-T001 is larger and may require PCB layout verification before substitution.