VLS252012CX-100M Equivalent & Substitute Parts

Part Overview

The VLS252012CX-100M is a 10 µH shielded drum core wirewound inductor manufactured by TDK Corporation, rated for 820 mA continuous current with a maximum DC resistance of 482 mOhm. This surface mount component in 1008 (2520 Metric) package is designed for power supply and filtering applications. The part is currently obsolete, making equivalent substitutes necessary for ongoing production and maintenance applications. Suitable alternatives must maintain the same inductance value, package footprint, and shielding characteristics while meeting thermal and current requirements.

Substiute Parts

VLS252012CX-100M

TDK CorporationIn Stock: 9710VLS252012CX-100M Datasheet

Current PartRFQ

BWVH00252012100M00

Pulse ElectronicsIn Stock: 778BWVH00252012100M00 Datasheet

SimilarRFQ

BWVH00252012100MH1

Pulse ElectronicsIn Stock: 970BWVH00252012100MH1 Datasheet

SimilarRFQ

BWVH00252012100T00

Pulse ElectronicsIn Stock: 981BWVH00252012100T00 Datasheet

SimilarRFQ

BWVH00252012100TH1

Pulse ElectronicsIn Stock: 799BWVH00252012100TH1 Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution for the VLS252012CX-100M is determined by the following critical parameters:

• Inductance Value: Must be 10 µH at 1 MHz test frequency
• Package Footprint: Must be 1008 (2520 Metric) for PCB compatibility
• Shielding: Must be shielded to maintain electromagnetic isolation
• Current Handling: Substitute must support minimum 820 mA continuous current rating
• DC Resistance: Lower or equivalent DCR is acceptable; higher values increase power dissipation
• Saturation Current: Must meet or exceed application requirements
• Surface Mount Compatibility: All substitutes must be surface mount in identical package

The Pulse Electronics BWVH series parts meet these core substitution criteria. All candidates maintain the 10 µH inductance, 1008 package, shielded construction, and surface mount configuration. Current rating differences and DCR variations are documented for application-specific selection.

Parameter Comparison

Engineering Selection Recommendations

All four Pulse Electronics BWVH series inductors are active production parts with ROHS3 compliance and extended operating temperature ranges (-55°C ~ 125°C) compared to the original TDK part (-40°C ~ 105°C). This provides improved thermal margin for demanding applications.

Current Rating Consideration: The VLS252012CX-100M is rated for 820 mA continuous current, while all BWVH substitutes are rated for 680 mA. Applications operating at or near 820 mA continuous current require thermal analysis to confirm the lower-rated substitute can dissipate the resulting power without exceeding temperature limits.

DC Resistance Selection: BWVH00252012100M00 and BWVH00252012100T00 offer 400 mOhm DCR (lower than the original 482 mOhm), reducing power dissipation. BWVH00252012100MH1 and BWVH00252012100TH1 offer 510 mOhm DCR (higher than original), increasing power dissipation by approximately 6%.

Tolerance Selection: Parts with ±20% tolerance (BWVH00252012100M00 and BWVH00252012100MH1) match the original specification. Parts with ±30% tolerance (BWVH00252012100T00 and BWVH00252012100TH1) provide wider tolerance bands and may be suitable for less critical applications.

Saturation Current: BWVH00252012100MH1 and BWVH00252012100TH1 offer 820 mA Isat, matching the original part's saturation current specification.

Frequently Asked Questions (FAQ)

Q: Can BWVH series parts directly replace the VLS252012CX-100M in existing designs?

A: Mechanical and electrical compatibility is confirmed for package footprint, inductance value, and shielding. However, the reduced current rating (680 mA vs. 820 mA) requires verification that your application does not exceed this limit under normal or peak operating conditions. Thermal analysis is recommended for applications operating above 680 mA.

Q: What is the impact of different DC resistance values?

A: Lower DCR (400 mOhm) reduces I²R power dissipation and heat generation. Higher DCR (510 mOhm) increases power dissipation by approximately 6% at rated current. For thermal-sensitive applications, the 400 mOhm variants are preferred.

Q: Are the ±30% tolerance parts suitable for my application?

A: Inductance tolerance affects circuit performance in filtering, resonant, and impedance-matching applications. If your design requires ±20% tolerance, use BWVH00252012100M00 or BWVH00252012100MH1. If ±30% tolerance is acceptable, BWVH00252012100T00 and BWVH00252012100TH1 are viable alternatives.

Q: Does the extended operating temperature range of BWVH parts affect compatibility?

A: The BWVH series operates from -55°C to 125°C, compared to the original -40°C to 105°C. This wider range provides additional thermal margin and is fully backward compatible with designs specified for the narrower original range.

Q: Are all substitute parts available in the same packaging format?

A: Yes. All BWVH substitutes are supplied in Tape & Reel (TR) packaging, standard for surface mount production. The 1008 (2520 Metric) package footprint is identical across all parts.

Q: Which substitute should I select for new designs?

A: For applications requiring the lowest power dissipation and matching the original ±20% tolerance, select BWVH00252012100M00. For applications where saturation current matching is critical, select BWVH00252012100MH1. Verify that your application current does not exceed 680 mA continuous rating.