CAL45VB121K Equivalent & Substitute Parts

Part Overview

The CAL45VB121K is a 120 µH unshielded wirewound axial inductor manufactured by Taiyo Yuden, rated for 490 mA continuous current with a maximum DC resistance of 1.6 Ohm. This component is classified as obsolete, making identification of equivalent substitute parts essential for ongoing design support and procurement continuity. The part operates across a temperature range of -25°C to 105°C and is suitable for through-hole mounting applications requiring fixed inductance values in compact axial packages.

Substiute Parts

CAL45VB121K

Taiyo YudenIn Stock: 825CAL45VB121K Datasheet

Current PartRFQ

AIAP-01-121K-T

Abracon LLCIn Stock: 1088AIAP-01-121K-T Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the CAL45VB121K is determined by the following critical electrical and mechanical parameters:

Primary Matching Criteria:

• Inductance value: 120 µH (±10% tolerance)
• Mounting type: Through hole axial configuration
• Package classification: Axial wirewound inductor
• Shielding type: Unshielded

Secondary Compatibility Criteria:

• Current rating: Minimum 470 mA (substitute must support primary circuit current requirements)
• DC resistance: Maximum 1.6 Ohm (substitute performance within acceptable loss parameters)
• Operating temperature range: Overlap with -25°C to 105°C specification
• Moisture sensitivity: MSL 1 classification

The AIAP-01-121K-T from Abracon LLC meets all primary matching criteria and maintains electrical performance within acceptable tolerances for direct substitution in applications where the CAL45VB121K is specified.

Parameter Comparison

Engineering Selection Recommendations

The AIAP-01-121K-T is a direct functional equivalent for the obsolete CAL45VB121K based on matched inductance, tolerance, shielding, and through-hole axial mounting specifications. The substitute component is currently in active production status, ensuring long-term availability and supply chain continuity.

Electrical Performance Considerations:

The AIAP-01-121K-T exhibits a lower maximum DC resistance (0.9 Ohm versus 1.6 Ohm), which results in reduced power dissipation and improved efficiency in the application circuit. The current rating of 470 mA is 20 mA lower than the original part; this difference is acceptable for applications operating at or below 470 mA continuous current. Applications requiring the full 490 mA rating must be evaluated against the substitute's specified maximum current.

Environmental and Compliance Advantages:

The substitute component provides ROHS3 compliance and REACH unaffected status, meeting current regulatory requirements for electronic component procurement. The extended operating temperature range (-40°C to 105°C) provides additional margin for applications in temperature-sensitive environments.

Packaging and Procurement:

The AIAP-01-121K-T is supplied in tape and reel packaging, suitable for automated assembly processes. The original CAL45VB121K packaging format is not specified in available data. Both components maintain MSL 1 classification, indicating no moisture sensitivity constraints during storage and handling.

Frequently Asked Questions (FAQ)

Q: Can the AIAP-01-121K-T directly replace the CAL45VB121K in existing circuit designs?

A: Yes, the AIAP-01-121K-T is a direct functional substitute for applications operating at or below 470 mA continuous current. Both components provide identical 120 µH inductance with ±10% tolerance, unshielded construction, and through-hole axial mounting. The substitute's lower DC resistance (0.9 Ohm) and extended temperature range provide performance advantages over the original part.

Q: What is the significance of the 20 mA current rating difference between these parts?

A: The CAL45VB121K is rated for 490 mA continuous current, while the AIAP-01-121K-T is rated for 470 mA. This 20 mA difference represents the maximum continuous current the substitute can safely handle without exceeding thermal limits. Applications designed for operation at 470 mA or below experience no functional impact. Applications requiring the full 490 mA rating must be re-evaluated or alternative components selected.

Q: How does the lower DC resistance of the substitute affect circuit performance?

A: The AIAP-01-121K-T exhibits a maximum DC resistance of 0.9 Ohm compared to 1.6 Ohm for the original part. Lower DC resistance reduces resistive losses in the inductor, resulting in decreased power dissipation and improved circuit efficiency. This characteristic is beneficial in most applications and does not create compatibility issues.

Q: Are there packaging differences between these components?

A: The AIAP-01-121K-T is supplied in tape and reel packaging suitable for automated assembly. The original CAL45VB121K packaging format is not specified. Both components use identical axial through-hole package geometry (0.173" diameter × 0.315" length for the original; 0.130" diameter × 0.360" length for the substitute). Physical dimensions differ slightly; verify PCB layout compatibility before implementation.

Q: What compliance certifications does the substitute component carry?

A: The AIAP-01-121K-T is ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic component procurement in regulated markets. The original CAL45VB121K compliance status is not specified in available documentation.

Q: Is the substitute component actively manufactured?

A: Yes, the AIAP-01-121K-T is classified as active product status, indicating ongoing manufacturing and availability. The original CAL45VB121K is obsolete, making the substitute the recommended choice for new designs and ongoing procurement requirements.