CM322522-R47ML Equivalent & Substitute Parts

Part Overview

The CM322522-R47ML is a 470 nH unshielded drum core wirewound inductor manufactured by Bourns Inc., designed for surface mount applications. This component delivers 290 mA current rating with 440mOhm maximum DC resistance and operates across -40°C to 125°C. The part maintains active product status with ROHS3 compliance and is currently in stock with 2977 units available.

Substitute parts are identified to provide design flexibility when the primary component is unavailable or when application requirements permit alternative construction types while maintaining core electrical specifications.

Substiute Parts

CM322522-R47ML

Bourns Inc.In Stock: 3013CM322522-R47ML Datasheet

Current PartRFQ

AISM-1210-R47M-T

Abracon LLCIn Stock: 6483AISM-1210-R47M-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CM322522-R47ML is determined by the following critical parameters:

Inductance Value: Both parts must maintain 470 nH with ±20% tolerance to ensure circuit frequency response and impedance matching.

Core Material & Shielding: Ferrite core material with unshielded construction is required to maintain electromagnetic characteristics and prevent interference in the target application.

Mounting Type: Surface mount configuration is mandatory for PCB assembly compatibility.

Current Rating: The substitute must support the application's current requirements. The CM322522-R47ML specifies 290 mA; substitutes with equal or higher current ratings are acceptable.

DC Resistance: Maximum DCR of 440mOhm establishes the upper limit for power dissipation and thermal performance. Substitutes with equal or lower DCR are acceptable.

Operating Temperature: The CM322522-R47ML operates -40°C to 125°C. Substitutes must cover this range or a subset that includes the application's operating conditions.

Compliance & Certifications: ROHS3 compliance and REACH unaffected status are maintained across all qualified substitutes.

Parameter Comparison

Engineering Selection Recommendations

Primary Selection: CM322522-R47ML remains the specified component for designs requiring the full -40°C to 125°C operating range and the lower profile height of 2.20mm maximum.

Substitute Selection: AISM-1210-R47M-T is qualified as a substitute when the application operates within -40°C to 85°C and can accommodate the increased height of 2.40mm. The substitute provides higher current rating (450 mA vs. 290 mA) and improved moisture sensitivity (MSL 1 vs. MSL 3), with marginally higher DC resistance (500mOhm vs. 440mOhm).

Both parts maintain ROHS3 compliance, REACH unaffected status, and identical inductance specifications. Selection between these components depends on thermal environment requirements and PCB height constraints.

Frequently Asked Questions (FAQ)

Q: Can AISM-1210-R47M-T replace CM322522-R47ML in all applications?

A: Substitution is valid when the application operates within -40°C to 85°C. If the design requires operation above 85°C, the CM322522-R47ML is required. The 0.20mm height difference must be verified against PCB clearance constraints.

Q: What is the impact of the 60mOhm higher DC resistance in the substitute?

A: The AISM-1210-R47M-T exhibits 500mOhm maximum DCR compared to 440mOhm for the CM322522-R47ML. This results in approximately 13.6% higher resistive losses. Power dissipation impact depends on the application's current profile and must be evaluated for thermal management.

Q: Are both parts identical in physical dimensions?

A: Both parts share identical length and width (3.20mm x 2.50mm). The AISM-1210-R47M-T has a maximum seated height of 2.40mm versus 2.20mm for the CM322522-R47ML. This 0.20mm difference must be considered for applications with tight vertical clearance.

Q: What does the difference in Moisture Sensitivity Level mean?

A: The CM322522-R47ML carries MSL 3 (168 hours), requiring controlled storage and handling. The AISM-1210-R47M-T carries MSL 1 (unlimited), permitting standard storage conditions without moisture precautions.

Q: Do both parts support the same current requirements?

A: The CM322522-R47ML is rated for 290 mA, while AISM-1210-R47M-T supports 450 mA. The substitute can handle higher current loads. For applications requiring exactly 290 mA or less, both parts are suitable. For applications exceeding 290 mA but within 450 mA, only the substitute is qualified.

Q: Are there compliance differences between the two parts?

A: Both parts are ROHS3 compliant and REACH unaffected. No compliance differentiation exists between the two components.