MAZO
VCMA-0420-R22-M-1A
A3 added MAX current columns; A4 added the voltage column. Read nominal inductance, bias limits, heating limits and mounting drawings separately. The MAX current-column convention remains unresolved.
MST ENGINEERING · READ / COMPARE / VERIFY
Read the datasheet. Understand the trade-offs.
Manufacturer documents, explained parameter by parameter. Compare candidate parts with their test conditions, ask a technical question, and share evidence from your application.
AI-assisted technical interpretation, checked against the cited PDFs. Application replacement has not been tested.
01 / SOURCE LIBRARY
Start with the exact part number
First collection: four exact power-inductor models. Ratings, drawings, curves, assembly and packaging are indexed with source pages. Unstated or ambiguous specifications stay marked as unknown.
Coilcraft
XAL4020-221MEC
The suffix identifies tolerance, termination and packaging. The 12.0 A and 16.8 A entries correspond to different temperature-rise conditions, while 18.7 A uses a 30% inductance-drop threshold.
MAZO
LPCA-1040-R36-M
The 50 A figure is a typical saturation threshold. The separate heating-current figure is 30 A. A1 uses a 1 MHz inductance test and includes reliability requirements, which are not an MST test report.
Bourns
SRP1038A-R36M
Use the single-A SRP1038A sheet for this part. Its Isat criterion is 20% inductance drop, and the R36 version is the non-lead-frame construction shown in the drawing.
This model is not in the first collection. Send the exact part number and public datasheet link below for review.
02 / PART COMPARISONS
Same headline specification. Different conditions.
Can VCMA-0420-R22-M-1A replace XAL4020-221MEC? Read the current and pad conditions first
Interchangeability is not confirmed. Nominal inductance matches, but the heating-current figures, total-temperature limit, operating/rated voltage and recommended lands differ. MAZO’s lower DCR alone cannot establish lower operating temperature or unchanged efficiency. Treat it as a conditional evaluation candidate after resolving the current-column ambiguity.
LPCA-1040-R36-M versus SRP1038A-R36M: why 50 A and 60 A do not mean the same thing
No interchangeability conclusion follows from those matches. Bourns lists 60 A at 20% inductance reduction; MAZO lists 50 A typical at 30% reduction. MAZO’s separate heating-current figure is 30 A, not 50 A continuous. Recommended pad widths, inductance-test frequency and total-temperature limits also differ.
03 / ENGINEERING DISCUSSION
Questions from the community
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ASK / ADD EVIDENCE
What does your application need?
Include exact part numbers, operating conditions and a public source link where available. A useful test report also states the board, method, conditions and result.
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