GRM155R71H102KA01D - Murata
Public Made by Adomby adom
MLCC 1 nF +/-10 %, 50 V, X7R, 0402 (1005 metric)
Land pattern check: GRM155R71H102KA01D
The footprint on this page is KiCad's standard library footprint Capacitor_SMD:C_0402_1005Metric, renamed to
C_0402_1005Metric_GRM155R71H102KA01D so it can sit beside other parts in one library folder. The copper is unchanged.
This page compares those pads with the land pattern recommended by Murata.
Grey is the part body at its datasheet nominal size, teal is the KiCad copper, the dashed amber outline is the maker's land (middle of its printed range, or its printed nominal), and the amber bands show where the maker allows the inner and outer pad edges when it prints a range.
Numbers
| Dimension | KiCad footprint | Maker's range | Result |
|---|---|---|---|
| gap between lands | 0.40 mm | 0.30 to 0.50 mm | inside |
| land length | 0.56 mm | 0.35 to 0.45 mm | outside by +0.11 mm |
| land width | 0.62 mm | 0.40 to 0.60 mm | outside by +0.02 mm |
| overall length (a + 2b, derived) | 1.52 mm | 1.00 to 1.40 mm | outside by +0.12 mm |
Maker's letters: a = gap between lands, b = land length, c = land width.
Source: Murata reference sheet, p.27 '2. Land Dimensions', Table 2 Reflow Soldering Method, GRM 15, 1.0x0.5 (within +/-0.10).
Result
The KiCad pads are larger than the maker's recommendation: land length by +0.11 mm, land width by +0.02 mm, overall length (a + 2b, derived) by +0.12 mm. The gap between the pads is inside the range. KiCad's footprint is generated to IPC-7351 nominal density (its own description says so), not to this maker's table. A design that wants the maker's land should shrink the pads to the numbers in the table.
KiCad pad centres are at +/-0.48 mm, pad size 0.56 x 0.62 mm,
rounded rectangle (corner ratio 0.25). The numbers are in land-check.json; the drawing is made by
provenance/tools/landcheck.py from the footprint file and the maker's table.
# Land pattern check: GRM155R71H102KA01D
The footprint on this page is KiCad's standard library footprint `Capacitor_SMD:C_0402_1005Metric`, renamed to
`C_0402_1005Metric_GRM155R71H102KA01D` so it can sit beside other parts in one library folder. The copper is unchanged.
This page compares those pads with the land pattern recommended by Murata.
Grey is the part body at its datasheet nominal size, teal is the KiCad copper, the dashed amber outline is the maker's
land (middle of its printed range, or its printed nominal), and the amber bands show where the maker allows the inner
and outer pad edges when it prints a range.
## Numbers
| Dimension | KiCad footprint | Maker's range | Result |
|---|---|---|---|
| gap between lands | 0.40 mm | 0.30 to 0.50 mm | inside |
| land length | 0.56 mm | 0.35 to 0.45 mm | outside by +0.11 mm |
| land width | 0.62 mm | 0.40 to 0.60 mm | outside by +0.02 mm |
| overall length (a + 2b, derived) | 1.52 mm | 1.00 to 1.40 mm | outside by +0.12 mm |
Maker's letters: a = gap between lands, b = land length, c = land width.
Source: Murata reference sheet, p.27 '2. Land Dimensions', Table 2 Reflow Soldering Method, GRM 15, 1.0x0.5 (within +/-0.10).
## Result
The KiCad pads are larger than the maker's recommendation: land length by +0.11 mm, land width by +0.02 mm, overall length (a + 2b, derived) by +0.12 mm. The gap between the pads is inside the range. KiCad's footprint is generated to IPC-7351 nominal density (its own description says so), not to this maker's table. A design that wants the maker's land should shrink the pads to the numbers in the table.
KiCad pad centres are at +/-0.48 mm, pad size 0.56 x 0.62 mm,
rounded rectangle (corner ratio 0.25). The numbers are in [land-check.json](land-check.json); the drawing is made by
`provenance/tools/landcheck.py` from the footprint file and the maker's table.