CAL45VB150K Equivalent & Substitute Parts

Part Overview

The CAL45VB150K is a 15 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 1.4 A continuous current with a maximum DC resistance of 190 mOhm. This through-hole axial component operates across a temperature range of -25°C to 105°C and is classified as obsolete. Due to its obsolete status, equivalent substitute parts are necessary for ongoing production requirements and design continuity. Substitute components must maintain the 15 µH inductance specification while accommodating variations in current rating, DC resistance, shielding characteristics, and mounting technology.

Substiute Parts

CAL45VB150K

Taiyo YudenIn Stock: 1085CAL45VB150K Datasheet

Current PartRFQ

NRS6045T150MMGK

Taiyo YudenIn Stock: 3667NRS6045T150MMGK Datasheet

SimilarRFQ

B78108E1153K000

EPCOS - TDK ElectronicsIn Stock: 1125B78108E1153K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the CAL45VB150K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value of 15 µH (exact match required)
• Current rating equal to or greater than 1.4 A
• DC resistance within acceptable operating limits
• Operating temperature range encompassing -25°C to 105°C minimum

Secondary Compatibility Factors:

• Mounting type (through-hole preferred for direct replacement; surface mount requires circuit redesign)
• Package configuration (axial preferred for direct replacement)
• Shielding characteristics (unshielded preferred; shielded acceptable with EMI consideration)
• Tolerance specification (±10% or tighter acceptable)

The substitute parts identified below satisfy the primary matching criteria while offering improved availability and active product status. Variations in DC resistance, current saturation ratings, and core material reflect design evolution within the 15 µH inductance category.

Parameter Comparison

Engineering Selection Recommendations

B78108E1153K000 (EPCOS - TDK Electronics)

The B78108E1153K000 is the preferred substitute for direct replacement applications. This component maintains through-hole axial mounting compatibility with the CAL45VB150K, eliminating circuit board redesign requirements. The part carries active product status with ROHS3 compliance and REACH affected designation, ensuring long-term availability and regulatory alignment. The current rating of 1.6 A exceeds the original 1.4 A specification, providing operational margin. Operating temperature range extends to -55°C to 125°C, encompassing the original -25°C to 105°C requirement. DC resistance of 230 mOhm is within acceptable limits for most applications, though power dissipation characteristics should be verified in thermal-sensitive designs. The ±10% tolerance matches the original specification.

NRS6045T150MMGK (Taiyo Yuden)

The NRS6045T150MMGK offers superior electrical performance with lower DC resistance (91 mOhm) and higher current rating (1.9 A), but requires circuit board redesign due to surface mount packaging. This component is classified as not for new designs, limiting its suitability for forward-looking applications. The shielded drum core construction provides EMI containment benefits in noise-sensitive circuits. ROHS3 compliance and REACH unaffected status support regulatory requirements. The extended operating temperature range (-25°C to 125°C) and higher saturation current (2.5 A) provide design flexibility. This substitute is appropriate for existing production lines where surface mount capability exists and component availability is prioritized.

Frequently Asked Questions (FAQ)

Q: Can the NRS6045T150MMGK replace the CAL45VB150K without circuit modification?

A: No. The NRS6045T150MMGK is a surface mount component, while the CAL45VB150K is through-hole axial. Direct substitution requires circuit board redesign and assembly process changes. The B78108E1153K000 provides through-hole axial compatibility without circuit modification.

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

A: DC resistance directly affects power dissipation and thermal performance. The CAL45VB150K specifies 190 mOhm maximum, the B78108E1153K000 specifies 230 mOhm maximum, and the NRS6045T150MMGK specifies 91 mOhm maximum. Higher DC resistance increases power loss; lower DC resistance reduces thermal load. Selection depends on circuit current levels and thermal constraints.

Q: Why is the B78108E1153K000 recommended over the NRS6045T150MMGK?

A: The B78108E1153K000 maintains through-hole axial mounting compatibility, eliminating redesign costs and production delays. It carries active product status, ensuring long-term availability. The NRS6045T150MMGK, while electrically superior, requires surface mount assembly capability and is classified as not for new designs, limiting future support.

Q: Are all three components rated for the same temperature range?

A: No. The CAL45VB150K operates -25°C to 105°C. The B78108E1153K000 operates -55°C to 125°C, providing extended low-temperature capability. The NRS6045T150MMGK operates -25°C to 125°C. All three encompass the original operating range.

Q: What does "not for new designs" mean for the NRS6045T150MMGK?

A: This designation indicates the manufacturer does not recommend this component for new product development. While suitable for existing production continuity, it may face eventual discontinuation. The B78108E1153K000 with active status is preferred for new designs.

Q: How do tolerance specifications affect substitution?

A: The CAL45VB150K and B78108E1153K000 both specify ±10% tolerance, ensuring equivalent inductance accuracy. The NRS6045T150MMGK specifies ±20% tolerance, introducing greater inductance variation. Applications requiring tight inductance control should prioritize the ±10% tolerance components.

Q: Is shielding a critical factor in substitution?

A: Shielding affects electromagnetic interference characteristics. The CAL45VB150K and B78108E1153K000 are unshielded; the NRS6045T150MMGK is shielded. Unshielded components are suitable for general applications; shielded components reduce EMI in sensitive circuits. Substitution between shielded and unshielded types requires circuit-level EMI assessment.