CAL45VB1R0K Equivalent & Substitute Parts

Part Overview

The CAL45VB1R0K is a 1 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 3.3 A continuous current with a maximum DC resistance of 36 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, identifying equivalent and substitute parts is necessary for ongoing design support, maintenance, and production continuity.

Substiute Parts

CAL45VB1R0K

Taiyo YudenIn Stock: 1094CAL45VB1R0K Datasheet

Current PartRFQ

NRS6045T1R0NMGK

Taiyo YudenIn Stock: 2406NRS6045T1R0NMGK Datasheet

SimilarRFQ

B78108E1102K000

EPCOS - TDK ElectronicsIn Stock: 11185B78108E1102K000 Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the CAL45VB1R0K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 1 µH (exact match required)
• Mounting type: Through hole configuration
• Package type: Axial form factor
• Current rating: Minimum 3.3 A continuous
• DC resistance: Comparable to 36 mOhm specification

Secondary Compatibility Factors:

• Operating temperature range overlap with -25°C to 105°C
• Shielding configuration (unshielded preferred for direct replacement)
• Tolerance specification (±10% or tighter)

The substitute parts identified maintain the core electrical specifications while accommodating variations in core material, saturation current, and physical dimensions within acceptable engineering tolerances for through-hole axial inductors.

Parameter Comparison

Engineering Selection Recommendations

B78108E1102K000 (EPCOS - TDK Electronics)

This part is the preferred substitute for new designs and ongoing production. It maintains through-hole axial mounting compatibility with the CAL45VB1R0K, matching the package form factor precisely. The B78108E1102K000 offers an active product status, ensuring long-term availability and supply chain stability. It carries ROHS3 compliance and REACH affected status, meeting current regulatory requirements. The current rating of 4.15 A exceeds the 3.3 A requirement, and the DC resistance of 38 mOhm is comparable to the original specification. Operating temperature range extends to -55°C to 125°C, providing broader environmental coverage. The ±10% tolerance matches the original specification.

NRS6045T1R0NMGK (Taiyo Yuden)

This substitute is available from the original manufacturer but carries a "Not For New Designs" status, limiting its suitability for new applications. The part is surface mount only, incompatible with through-hole mounting requirements. The shielded configuration differs from the unshielded original. The ±30% tolerance is wider than the original ±10% specification. This option is suitable only for legacy system maintenance where through-hole mounting is not required and surface mount compatibility exists.

Frequently Asked Questions (FAQ)

Q: Can the NRS6045T1R0NMGK replace the CAL45VB1R0K in existing through-hole designs?

A: No. The NRS6045T1R0NMGK is a surface mount component with nonstandard package dimensions, while the CAL45VB1R0K requires through-hole axial mounting. Physical and electrical interface incompatibility prevents direct substitution.

Q: What are the key differences between B78108E1102K000 and CAL45VB1R0K?

A: Both are through-hole axial inductors with 1 µH inductance and ±10% tolerance. The B78108E1102K000 uses a drum core ferrite construction versus the original wirewound design, offers higher saturation current (5.8 A vs 5.6 A), and extends the operating temperature range to -55°C to 125°C. DC resistance values are comparable (38 mOhm vs 36 mOhm). The B78108E1102K000 is active and RoHS3 compliant.

Q: Is the higher current rating of substitute parts a concern?

A: No. Higher current ratings provide design margin and do not create compatibility issues. The 4.15 A rating of B78108E1102K000 exceeds the 3.3 A requirement, ensuring adequate performance headroom.

Q: Why is product status important in selecting a substitute?

A: Product status indicates supply chain availability and manufacturer support. The B78108E1102K000 carries active status, ensuring continued production and availability. The CAL45VB1R0K is obsolete, and the NRS6045T1R0NMGK is not recommended for new designs, limiting long-term viability.

Q: Does the shielded configuration of NRS6045T1R0NMGK affect compatibility?

A: Shielding differences affect electromagnetic interference characteristics and circuit behavior. The original CAL45VB1R0K is unshielded. Substituting a shielded component alters the electromagnetic environment and may require circuit re-evaluation. This is a secondary consideration only when mounting type compatibility is already established.

Q: Are there compliance considerations for substitute selection?

A: Yes. The B78108E1102K000 is ROHS3 compliant and REACH affected, meeting current regulatory standards. The CAL45VB1R0K compliance status is not specified. For applications requiring regulatory compliance documentation, the B78108E1102K000 is the appropriate choice.