CSBX1809-330M Equivalent & Substitute Parts

Part Overview

The CSBX1809-330M is a 33 µH shielded wirewound inductor manufactured by CODACA, designed for high saturation power applications. This surface mount component features a metal composite core with a current rating of 8.5 A and saturation current of 14 A, making it suitable for power conversion and filtering circuits requiring stable inductance under high current conditions. The part maintains Active product status with full AEC-Q200 automotive qualification and ROHS3 compliance. Substitute parts are identified based on matching electrical specifications, mechanical dimensions, and performance ratings to ensure direct functional equivalence in circuit applications.

Substiute Parts

CSBX1809-330M

CODACAIn Stock: 924CSBX1809-330M Datasheet

Current PartRFQ

CSBX1809-330M

CODACAIn Stock: 924CSBX1809-330M Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CSBX1809-330M is determined by strict equivalence across the following critical parameters:

Electrical Specifications:

• Inductance value of 33 µH with ±20% tolerance
• Current rating of 8.5 A minimum
• Saturation current (Isat) of 14 A minimum
• DC resistance (DCR) of 23 mOhm maximum

Mechanical & Physical Specifications:

• Surface mount wirewound inductor with metal composite core
• Shielded construction
• Nonstandard package dimensions: 0.760" L x 0.717" W (19.30 mm x 18.20 mm)
• Maximum seated height of 0.362" (9.20 mm)

Environmental & Compliance Specifications:

• Operating temperature range of -55°C to 150°C
• AEC-Q200 automotive qualification
• ROHS3 compliance
• Moisture Sensitivity Level 1 (Unlimited)
• REACH Unaffected status

Performance Characteristics:

• Inductance measured at 100 kHz test frequency
• High saturation feature for stable performance under elevated current conditions

Substitute parts must match all electrical parameters, maintain identical mechanical dimensions and mounting characteristics, and retain equivalent compliance certifications and environmental ratings.

Parameter Comparison

Engineering Selection Recommendations

The CSBX1809-330M maintains Active product status with full availability and established supply chain support. Selection of equivalent parts should prioritize components with identical electrical specifications, particularly the 33 µH inductance value, 8.5 A current rating, and 14 A saturation current, as these parameters directly determine circuit performance in power conversion applications.

Compliance certifications are critical for component selection. The AEC-Q200 automotive qualification ensures reliability in demanding automotive and industrial environments. ROHS3 compliance and REACH Unaffected status confirm environmental and regulatory conformance for global applications. Moisture Sensitivity Level 1 (Unlimited) indicates no moisture-related handling restrictions during assembly and storage.

The metal composite core construction with shielded wirewound design provides stable inductance characteristics across the operating temperature range of -55°C to 150°C. The nonstandard package dimensions (19.30 mm x 18.20 mm x 9.20 mm maximum height) must be verified for PCB layout compatibility, as this geometry is specific to the CSBX1809 series and may not be interchangeable with standard inductor packages.

DC resistance of 23 mOhm maximum directly impacts thermal performance and power dissipation in the application circuit. Components selected as substitutes must maintain this specification to ensure equivalent thermal behavior and efficiency characteristics.

Frequently Asked Questions (FAQ)

Q: What makes the CSBX1809-330M suitable for high saturation applications?

A: The CSBX1809-330M features a metal composite core with a saturation current (Isat) of 14 A, which is significantly higher than its rated current of 8.5 A. This design maintains stable inductance values even when operating near or at maximum current levels, preventing inductance collapse that occurs in non-saturating designs.

Q: Are there alternative part numbers that can substitute for the CSBX1809-330M?

A: Based on the provided specifications, the CSBX1809-330M is the identified equivalent part. Substitution requires exact matching of all electrical parameters (33 µH inductance, 8.5 A current rating, 14 A saturation current, 23 mOhm DCR), mechanical dimensions (19.30 mm x 18.20 mm x 9.20 mm), and compliance certifications (AEC-Q200, ROHS3).

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

A: The nonstandard package designation indicates that the CSBX1809-330M does not conform to industry-standard inductor package dimensions. The specific dimensions of 0.760" L x 0.717" W (19.30 mm x 18.20 mm) are proprietary to the CSBX1809 series. PCB footprints and layout designs must be specifically designed for this geometry and cannot use generic inductor footprints.

Q: How does the ±20% inductance tolerance affect circuit design?

A: The ±20% tolerance means the actual inductance value can range from 26.4 µH to 39.6 µH. Circuit designs must account for this variation in filtering, impedance matching, and resonant frequency calculations. Critical applications may require inductance sorting or selection for tighter tolerance bands.

Q: What does AEC-Q200 qualification indicate?

A: AEC-Q200 is an automotive electronics council qualification standard for passive components. This certification confirms the CSBX1809-330M meets stringent reliability, temperature cycling, and performance requirements for automotive and high-reliability industrial applications.

Q: Is the CSBX1809-330M suitable for high-temperature applications?

A: The operating temperature range of -55°C to 150°C supports high-temperature applications. The metal composite core maintains inductance stability across this range. However, DC resistance and thermal performance should be evaluated at the maximum operating temperature to ensure the component meets thermal dissipation requirements.

Q: What is Moisture Sensitivity Level 1 (Unlimited)?

A: MSL 1 (Unlimited) indicates the component has no moisture sensitivity restrictions. The part can be stored and handled without special moisture-control measures, desiccant packaging, or bake-out procedures prior to soldering. This simplifies supply chain management and assembly processes.

Q: How should the CSBX1809-330M be handled during assembly?

A: With MSL 1 (Unlimited) rating, standard handling procedures apply. The component is supplied in Tape & Reel (TR) packaging suitable for automated pick-and-place assembly. No special moisture-control precautions are required, and the part can be stored at standard ambient conditions.

Q: What is the significance of the 100 kHz inductance test frequency?

A: The inductance value of 33 µH is measured and specified at 100 kHz. Actual inductance may vary at different frequencies due to core material characteristics. Circuit designers should account for frequency-dependent inductance variations when the operating frequency differs significantly from 100 kHz.

Q: Does ROHS3 compliance affect component sourcing?

A: ROHS3 compliance confirms the CSBX1809-330M contains no restricted substances (lead, cadmium, mercury, hexavalent chromium, PBBs, PBDEs) and meets European environmental regulations. This certification is required for many commercial and industrial applications and simplifies global distribution and end-of-life recycling.