CAL45VB270K Equivalent & Substitute Parts

Part Overview

The CAL45VB270K is a 27 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 1.13 A continuous current with a maximum DC resistance of 330 mOhm. This component is designed for through-hole axial mounting applications requiring fixed inductance in the 27 µH range. The part is classified as obsolete, making identification of equivalent and substitute components necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

CAL45VB270K

Taiyo YudenIn Stock: 966CAL45VB270K Datasheet

Current PartRFQ

B82144F2273K000

EPCOS - TDK ElectronicsIn Stock: 2347B82144F2273K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAL45VB270K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 27 µH (±10% tolerance)
• Mounting type: Through hole axial configuration
• Package / case: Axial form factor
• Shielding classification: Unshielded

Secondary Compatibility Criteria:

• Current rating must equal or exceed 1.13 A
• DC resistance must not exceed 330 mOhm
• Operating temperature range must encompass the original specification or provide equivalent thermal performance

The B82144F2273K000 from EPCOS - TDK Electronics satisfies all primary matching criteria and provides enhanced performance characteristics in secondary parameters, including higher current rating (2 A), lower DC resistance (200 mOhm), and extended operating temperature range (-55°C ~ 125°C).

Parameter Comparison

Engineering Selection Recommendations

B82144F2273K000 Substitution Basis:

The B82144F2273K000 is a direct functional substitute for the CAL45VB270K based on matching inductance value, tolerance, shielding classification, and through-hole axial mounting configuration. The substitute component provides performance enhancements across all secondary parameters: current rating increased from 1.13 A to 2 A, DC resistance reduced from 330 mOhm to 200 mOhm, and operating temperature range extended from -25°C ~ 105°C to -55°C ~ 125°C.

The B82144F2273K000 is classified as active product status with ROHS3 compliance and REACH affected designation, ensuring ongoing availability and regulatory alignment. The substitute employs a drum core wirewound construction with ferrite core material, compared to the original unspecified core material, providing improved electromagnetic performance characteristics.

Physical dimensions differ slightly (0.256" Dia x 0.362" L versus 0.173" Dia x 0.315" L), requiring verification of board layout and mechanical clearance constraints in the target application.

Frequently Asked Questions (FAQ)

Q: Can the B82144F2273K000 replace the CAL45VB270K in all applications?

A: The B82144F2273K000 matches all critical electrical parameters (inductance, tolerance, shielding, mounting type) and exceeds performance specifications in current rating, DC resistance, and operating temperature range. Physical dimensions differ and must be verified against available board space and mechanical constraints.

Q: What is the significance of the inductance tolerance ±10%?

A: Both components share identical ±10% inductance tolerance, ensuring equivalent circuit performance within specified tolerance bands. Applications requiring tighter tolerance control require components with reduced tolerance specifications.

Q: Why does the substitute have lower DC resistance?

A: The B82144F2273K000 exhibits 200 mOhm maximum DC resistance compared to 330 mOhm maximum in the original component. Lower DC resistance reduces resistive losses and heat generation during operation, providing improved efficiency in current-carrying applications.

Q: Are there physical compatibility concerns?

A: The substitute component measures 0.256" Dia x 0.362" L (6.50mm x 9.20mm) compared to the original 0.173" Dia x 0.315" L (4.40mm x 8.00mm). Board layout verification is required to confirm adequate clearance and mounting compatibility.

Q: What is the product status difference between the two components?

A: The CAL45VB270K is classified as obsolete, indicating discontinued production and limited availability. The B82144F2273K000 is classified as active product status, ensuring ongoing manufacturing and supply chain availability.

Q: Does the substitute meet regulatory requirements?

A: The B82144F2273K000 is ROHS3 compliant and REACH affected, meeting current regulatory standards for electronic component manufacturing and environmental compliance.