CAL45VB8R2K Equivalent & Substitute Parts

Part Overview

The CAL45VB8R2K is an 8.2 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 1.9 A continuous current with a maximum DC resistance of 110 mOhm. This component is designed for through-hole axial mounting applications requiring fixed inductance in the microhenry range.

The CAL45VB8R2K has reached obsolete product status. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production or repair requirements for systems utilizing this inductor.

Substiute Parts

CAL45VB8R2K

Taiyo YudenIn Stock: 917CAL45VB8R2K Datasheet

Current PartRFQ

B82144F2822K000

EPCOS - TDK ElectronicsIn Stock: 3935B82144F2822K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAL45VB8R2K is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 8.2 µH (±10% tolerance)
• Current rating: minimum 1.9 A continuous
• Saturation current: minimum 2.0 A
• DC resistance: maximum 110 mOhm
• Mounting type: Through Hole
• Package type: Axial
• Shielding configuration: Unshielded

The substitute part B82144F2822K000 meets all primary electrical requirements with enhanced performance characteristics. It maintains the identical inductance value and tolerance, exceeds the current rating specification, and operates within compatible DC resistance limits. Both components are unshielded axial wirewound inductors suitable for through-hole mounting.

Parameter Comparison

Engineering Selection Recommendations

B82144F2822K000 as Primary Substitute:

The B82144F2822K000 is the qualified substitute for the obsolete CAL45VB8R2K. This selection is based on the following engineering factors:

1. Electrical Equivalence: Both components maintain 8.2 µH inductance with ±10% tolerance. The substitute's current rating of 2.65 A and saturation current of 3.1 A exceed the original specification of 1.9 A and 2.0 A respectively, providing design margin.

2. DC Resistance Compliance: The substitute's maximum DC resistance of 105 mOhm meets the original 110 mOhm specification, ensuring equivalent power dissipation characteristics.

3. Physical Compatibility: Both inductors are unshielded, axial-mounted, through-hole components with compatible form factors for PCB integration.

4. Product Status and Supply: The B82144F2822K000 maintains active manufacturing status with 3850 units in stock, ensuring long-term availability compared to the obsolete CAL45VB8R2K.

5. Regulatory Compliance: The substitute is ROHS3 compliant and REACH affected, meeting current environmental and regulatory requirements for electronic component procurement.

6. Temperature Performance: The substitute's operating range of -55 to 125°C exceeds the original -25 to 105°C specification, supporting broader application environments.

Frequently Asked Questions (FAQ)

Q: Can the B82144F2822K000 directly replace the CAL45VB8R2K in existing designs?

A: Yes. Both components share identical inductance values (8.2 µH), tolerance (±10%), shielding configuration (unshielded), mounting type (through-hole), and package type (axial). The substitute meets all electrical requirements of the original specification.

Q: What are the physical dimension differences between these inductors?

A: The CAL45VB8R2K measures 0.173" diameter × 0.315" length (4.40 mm × 8.00 mm). The B82144F2822K000 measures 0.256" diameter × 0.362" length (6.50 mm × 9.20 mm). The substitute is slightly larger; PCB layout verification is required to confirm fit within available space.

Q: Does the higher current rating of the substitute affect circuit performance?

A: No. The substitute's 2.65 A current rating and 3.1 A saturation current exceed the original 1.9 A and 2.0 A specifications. This provides additional design margin without altering circuit behavior at the original operating current.

Q: Are there compliance differences between the original and substitute?

A: The B82144F2822K000 is ROHS3 compliant and REACH affected. The original CAL45VB8R2K compliance status is not specified in available documentation. The substitute meets current regulatory requirements for new designs and procurement.

Q: What is the significance of the different core materials?

A: The CAL45VB8R2K uses a standard wirewound core, while the B82144F2822K000 uses a ferrite drum core with wirewound construction. Both are unshielded inductors with identical inductance and tolerance specifications. The ferrite core in the substitute provides improved saturation characteristics.

Q: How do the temperature operating ranges compare?

A: The CAL45VB8R2K operates from -25 to 105°C. The B82144F2822K000 operates from -55 to 125°C. The substitute supports a wider temperature envelope, suitable for applications requiring extended thermal performance.

Q: Is the DC resistance difference significant?

A: The CAL45VB8R2K specifies 110 mOhm maximum; the B82144F2822K000 specifies 105 mOhm maximum. The substitute's lower resistance reduces power dissipation and heat generation, providing a performance advantage.