CAL45VB820K Equivalent & Substitute Parts

Part Overview

The CAL45VB820K is an 82 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 620 mA continuous current with a maximum DC resistance of 920 mOhm. This component features an axial through-hole package with operating temperature range of -25°C to 105°C and is classified as obsolete. Due to its obsolete product status and limited availability from the original manufacturer, identifying equivalent substitute components is necessary to maintain design continuity and ensure supply chain reliability for applications requiring this inductance value and current rating.

Substiute Parts

CAL45VB820K

Taiyo YudenIn Stock: 1043CAL45VB820K Datasheet

Current PartRFQ

AIAP-01-820K-T

Abracon LLCIn Stock: 1125AIAP-01-820K-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAL45VB820K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 82 µH (with ±10% tolerance allowance)
• Inductance tolerance: ±10%
• Shielding type: Unshielded
• Wirewound construction type
• Through-hole axial mounting configuration

Secondary Compatibility Criteria:

• Current rating must equal or exceed 620 mA
• DC resistance must not exceed 920 mOhm
• Operating temperature range must encompass or exceed -25°C to 105°C
• Package / case type: Axial

The AIAP-01-820K-T from Abracon LLC meets the primary matching criteria with identical inductance, tolerance, shielding, construction type, and mounting configuration. While the current rating (580 mA) is lower than the original specification, the DC resistance (600 mOhm) is superior, and the extended operating temperature range (-40°C to 105°C) provides broader thermal coverage.

Parameter Comparison

Engineering Selection Recommendations

The AIAP-01-820K-T is suitable as a substitute for the CAL45VB820K based on the following engineering factors:

Product Status Advantage: The AIAP-01-820K-T carries active product status, ensuring continued availability and manufacturer support, whereas the CAL45VB820K is obsolete and subject to supply discontinuation.

Compliance and Certification: The AIAP-01-820K-T is ROHS3 compliant and REACH unaffected, meeting current regulatory requirements for electronic component procurement. These certifications support long-term design compliance and supply chain sustainability.

Electrical Performance: Both components share identical inductance (82 µH) and tolerance (±10%). The AIAP-01-820K-T exhibits superior DC resistance performance (600 mOhm versus 920 mOhm), resulting in lower power dissipation and improved thermal efficiency in the application circuit.

Thermal Coverage: The AIAP-01-820K-T provides extended low-temperature operation (-40°C versus -25°C), offering broader environmental compatibility without sacrificing upper temperature limits.

Current Rating Consideration: The AIAP-01-820K-T current rating of 580 mA is 40 mA lower than the original 620 mA specification. This difference requires circuit-level evaluation to confirm the application does not demand the full 620 mA rating under normal operating conditions.

Frequently Asked Questions (FAQ)

Q: Can the AIAP-01-820K-T directly replace the CAL45VB820K in all applications?

A: Direct substitution is valid for applications where the circuit current demand does not exceed 580 mA. The AIAP-01-820K-T maintains identical inductance and tolerance specifications. Applications requiring the full 620 mA rating must be evaluated individually to determine if operation at 580 mA is acceptable.

Q: What is the significance of the DC resistance difference between these components?

A: The AIAP-01-820K-T exhibits 600 mOhm maximum DC resistance compared to 920 mOhm for the CAL45VB820K. Lower DC resistance reduces resistive losses and heat generation in the inductor, improving overall circuit efficiency. This represents a performance advantage for the substitute component.

Q: Are the physical dimensions compatible between these two inductors?

A: Both components use axial through-hole packaging, but physical dimensions differ. The CAL45VB820K measures 0.173" diameter × 0.315" length (4.40mm × 8.00mm), while the AIAP-01-820K-T measures 0.130" diameter × 0.360" length (3.30mm × 9.14mm). PCB layout and mechanical clearance must be verified before substitution.

Q: What compliance advantages does the AIAP-01-820K-T offer?

A: The AIAP-01-820K-T is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components. The CAL45VB820K compliance status is not specified. For applications subject to regulatory compliance requirements, the AIAP-01-820K-T provides documented certification.

Q: How do the operating temperature ranges compare?

A: The AIAP-01-820K-T operates from -40°C to 105°C, extending the lower temperature limit by 15°C compared to the CAL45VB820K range of -25°C to 105°C. Both components maintain the same upper temperature limit. Applications requiring operation below -25°C benefit from the extended range of the substitute component.

Q: Is the inductance tolerance identical between these components?

A: Yes, both the CAL45VB820K and AIAP-01-820K-T specify ±10% inductance tolerance, ensuring equivalent tolerance performance in circuit applications.