CAL45VB2R7K Equivalent & Substitute Parts

Part Overview

The CAL45VB2R7K is a 2.7 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 2.5 A continuous current with a maximum DC resistance of 58 mOhm. This component is designed for through-hole axial mounting applications requiring fixed inductance in the low-microhenry range.

The CAL45VB2R7K is classified as obsolete. Locating equivalent or substitute inductors is necessary to support ongoing maintenance, repair, and production requirements for legacy systems utilizing this component. Substitute parts must maintain electrical compatibility while meeting or exceeding the original specifications.

Substiute Parts

CAL45VB2R7K

Taiyo YudenIn Stock: 773CAL45VB2R7K Datasheet

Current PartRFQ

B82144F2272K000

EPCOS - TDK ElectronicsIn Stock: 3096B82144F2272K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAL45VB2R7K is determined by the following critical electrical and mechanical parameters:

Primary Substitution Criteria:

• Inductance value: 2.7 µH (±10% tolerance acceptable)
• Current rating: minimum 2.5 A continuous
• Saturation current: minimum 3.5 A
• DC resistance: maximum 58 mOhm
• Mounting type: Through Hole
• Package type: Axial
• Shielding configuration: Unshielded

The substitute part B82144F2272K000 meets all primary electrical requirements with improved performance margins. The substitute provides higher current rating (3.5 A vs. 2.5 A), higher saturation current (5.4 A vs. 3.5 A), and comparable DC resistance (60 mOhm vs. 58 mOhm maximum). Both components are unshielded axial wirewound inductors suitable for through-hole assembly.

Parameter Comparison

Engineering Selection Recommendations

B82144F2272K000 as Primary Substitute:

The B82144F2272K000 is the qualified substitute for the obsolete CAL45VB2R7K. This component is manufactured by EPCOS - TDK Electronics and maintains active product status with continuous availability.

Electrical Compatibility: The B82144F2272K000 satisfies all minimum electrical requirements of the CAL45VB2R7K. The substitute provides performance margins above the original specification: current rating increased from 2.5 A to 3.55 A, saturation current increased from 3.5 A to 5.4 A, and DC resistance remains within acceptable tolerance (60 mOhm vs. 58 mOhm maximum).

Mechanical Compatibility: Both components are unshielded axial wirewound inductors with through-hole mounting. Physical dimensions differ slightly (0.256" diameter × 0.362" length for substitute vs. 0.173" diameter × 0.315" length for original), but both are compatible with standard through-hole PCB layouts and axial component insertion equipment.

Compliance and Certification: The B82144F2272K000 is RoHS3 compliant and REACH affected. The substitute meets current regulatory requirements for electronic component manufacturing and distribution.

Inventory Availability: The B82144F2272K000 is actively manufactured with substantial inventory availability (3002 pieces in stock), ensuring reliable sourcing for production and maintenance applications.

Frequently Asked Questions (FAQ)

Q: Can the B82144F2272K000 directly replace the CAL45VB2R7K in existing designs?

A: Yes. The B82144F2272K000 meets all electrical specifications of the CAL45VB2R7K with performance margins in current rating and saturation current. Both components are unshielded axial wirewound inductors with identical inductance values and tolerances. Through-hole mounting compatibility is maintained. Physical dimensions differ slightly, but standard PCB layouts accommodate both component sizes.

Q: What are the key electrical differences between these inductors?

A: The primary differences are current rating (3.55 A vs. 2.5 A), saturation current (5.4 A vs. 3.5 A), and DC resistance (60 mOhm vs. 58 mOhm maximum). The substitute provides higher current handling capability and extended operating temperature range (-55°C to 125°C vs. -25°C to 105°C). Inductance value and tolerance remain identical at 2.7 µH ±10%.

Q: Are there any mechanical considerations when substituting these parts?

A: Physical dimensions differ between the two inductors. The B82144F2272K000 is larger (0.256" diameter × 0.362" length) compared to the CAL45VB2R7K (0.173" diameter × 0.315" length). Verify that PCB layout and component spacing accommodate the larger substitute inductor. Both components use axial through-hole mounting and are compatible with standard insertion equipment.

Q: What is the product status difference, and why does it matter?

A: The CAL45VB2R7K is obsolete and no longer manufactured by Taiyo Yuden. The B82144F2272K000 is active and continuously manufactured by EPCOS - TDK Electronics. Active product status ensures reliable long-term availability for production and maintenance applications.

Q: Are there compliance or certification differences?

A: The B82144F2272K000 is RoHS3 compliant and REACH affected, meeting current regulatory requirements. The CAL45VB2R7K specifications do not include RoHS or REACH compliance information. For applications requiring regulatory compliance documentation, the B82144F2272K000 provides current certification.

Q: How do the DC resistance values compare?

A: The CAL45VB2R7K has a maximum DC resistance of 58 mOhm, while the B82144F2272K000 has a maximum of 60 mOhm. This 2 mOhm difference is within acceptable engineering tolerance for most applications. Both values are sufficiently low for typical low-inductance circuit applications.