CAL45VB100K Equivalent & Substitute Parts

Part Overview

The CAL45VB100K is a 10 µH unshielded wirewound inductor manufactured by Taiyo Yuden, rated for 1.7 A continuous current with a maximum DC resistance of 140 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 and substitute parts are necessary for ongoing production requirements, maintenance applications, and design continuity where the original component is no longer available from primary sources.

Substiute Parts

CAL45VB100K

Taiyo YudenIn Stock: 1163CAL45VB100K Datasheet

Current PartRFQ

NRS6045T100MMGK

Taiyo YudenIn Stock: 2774NRS6045T100MMGK Datasheet

SimilarRFQ

B78108E1103K000

EPCOS - TDK ElectronicsIn Stock: 2081B78108E1103K000 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the CAL45VB100K is determined by the following critical parameters:

Primary Matching Criteria:

• Inductance value: 10 µH (exact match required)
• Current rating: minimum 1.7 A continuous
• DC resistance: compatible with circuit requirements
• Tolerance: ±10% or tighter
• Mounting type: through-hole axial configuration

Acceptable Variations:

• Current saturation rating may exceed 1.7 A
• DC resistance may be lower than 140 mOhm (improved performance)
• Operating temperature range may be extended beyond -25°C ~ 105°C
• Shielding configuration may differ if circuit design permits
• Core material composition may vary (ferrite or air core)

The substitute parts listed below maintain the 10 µH inductance specification and support the 1.7 A current requirement while offering improved electrical characteristics or extended operational parameters.

Parameter Comparison

Engineering Selection Recommendations

B78108E1103K000 (EPCOS - TDK Electronics)

This part is the preferred substitute for direct replacement in through-hole applications. It maintains the axial package configuration and unshielded design of the original CAL45VB100K. The B78108E1103K000 offers superior current handling (2.25 A vs. 1.7 A), comparable DC resistance (136 mOhm vs. 140 mOhm), and maintains ±10% tolerance. The component is actively manufactured and carries ROHS3 compliance certification. Extended operating temperature range (-55°C ~ 125°C) provides additional operational margin. This substitute requires no PCB layout modifications and is suitable for direct socket replacement.

NRS6045T100MMGK (Taiyo Yuden)

This part is a functional equivalent from the same manufacturer but requires PCB redesign due to surface-mount package configuration. The NRS6045T100MMGK delivers superior electrical performance with significantly lower DC resistance (59.8 mOhm vs. 140 mOhm) and higher current rating (2.4 A vs. 1.7 A). Shielded construction provides electromagnetic interference mitigation. The component carries ROHS3 compliance and REACH unaffected status. This substitute is classified as "Not For New Designs" and should be reserved for legacy system maintenance or where specific performance advantages justify redesign effort.

Product Status Considerations

The B78108E1103K000 is the only actively manufactured substitute and is recommended for new production applications. The NRS6045T100MMGK, while offering superior performance, carries a "Not For New Designs" designation and should be evaluated for long-term availability before selection for new projects.

Frequently Asked Questions (FAQ)

Q: Can the B78108E1103K000 be used as a direct replacement for the CAL45VB100K without circuit modifications?

A: Yes. Both components are through-hole axial inductors with identical 10 µH inductance and ±10% tolerance. The B78108E1103K000 provides higher current rating (2.25 A vs. 1.7 A) and comparable DC resistance (136 mOhm vs. 140 mOhm), making it a direct functional substitute. No PCB layout changes are required.

Q: What are the key differences between the B78108E1103K000 and NRS6045T100MMGK?

A: The primary differences are mounting type and package configuration. The B78108E1103K000 is a through-hole axial component, while the NRS6045T100MMGK is surface-mount. The NRS6045T100MMGK offers lower DC resistance (59.8 mOhm vs. 136 mOhm) and shielded construction. PCB redesign is required to use the NRS6045T100MMGK.

Q: Why is the NRS6045T100MMGK marked "Not For New Designs"?

A: This designation indicates the manufacturer does not recommend this part for new product development. However, it remains available for legacy system support and maintenance applications. Verify long-term availability with the supplier before committing to this part for production use.

Q: Does the B78108E1103K000 meet RoHS compliance requirements?

A: Yes. The B78108E1103K000 carries ROHS3 compliance certification. The original CAL45VB100K does not specify RoHS status. If RoHS compliance is a requirement, the B78108E1103K000 is the appropriate selection.

Q: What is the impact of lower DC resistance in the NRS6045T100MMGK?

A: Lower DC resistance (59.8 mOhm vs. 140 mOhm) reduces resistive losses and heat generation during operation. This improves efficiency and allows operation at higher current levels without exceeding thermal limits. The trade-off is that PCB redesign is required for surface-mount implementation.

Q: Are there temperature range considerations when selecting a substitute?

A: The original CAL45VB100K operates from -25°C to 105°C. The B78108E1103K000 extends this to -55°C to 125°C, providing additional operational margin. The NRS6045T100MMGK operates from -25°C to 125°C. If the application requires operation beyond the original temperature range, either substitute provides extended capability.

Q: What is the moisture sensitivity level for these components?

A: All three components (CAL45VB100K, B78108E1103K000, and NRS6045T100MMGK) carry MSL 1 (Unlimited) rating, indicating no moisture sensitivity restrictions. Standard handling and storage procedures apply.