C1812C124J1GACTU - KEMET

"""Catalog data for the KEMET C1812C124J1GACTU page (all values from the cited sources).

Sources: KEMET datasheet C1003_C0G (2/20/2025), the KEMET product page, KEMET's STEP for this part
number (plain HTTP GET, no browser), KiCad's Capacitor_SMD library. Distributor numbers and stock:
adom-parts-search, 2026-10-21.
"""
TODAY = "2026-10-21"
ROOT = "/home/adom/project/uta-dynos/work/pages/_build"
PRODUCT = "https://yageogroup.com/en/us/capacitors/ceramic/mlccs-smd/C1812C124J1GACTU.html"  # kemet.com product URL redirects here
PRODUCT_KEMET = "https://www.kemet.com/en/us/capacitors/ceramic/mlccs-smd/C1812C124J1GACTU.html"
KSIM = "https://ksim3.kemet.com/capacitor-simulation?pn=C1812C124J1GACTU"
STEP_URL = "https://search.kemet.com/component-documentation/download/step/C1812C124J1GACTU.step"
DS_URL = "https://content.kemet.com/datasheets/KEM_C1003_C0G_SMD.pdf"
DS_URL_ALT = "https://yageogroup.com/content/datasheet/asset/file/KEM_C1003_C0G_SMD"
DS_PUB = "docs/KEMET-C1003-C0G-2025-02-20.pdf"
DS_TITLE = "KEMET, Surface Mount Multilayer Ceramic Chip Capacitors (SMD MLCCs), C0G Dielectric, 10 to 250 VDC (Commercial Grade), C1003_C0G, 2/20/2025 (22 pages)"
DOCS = [("ds", "kemet/KEMET-C1003-C0G-2025-02-20.pdf", DS_PUB, DS_TITLE, DS_URL)]
# (file, doc, page, crop box in 100 dpi pixels, caption); crops are cut from 150 dpi renders
FIGS = [
    ("kemet-ds-p1-overview-ordering.png", "ds", 1, [40, 120, 810, 1010], "p.1 overview (no change in capacitance with time and voltage, +/-30 ppm/C) and ordering information (C 1812 C 124 J 1 G A C TU)"),
    ("kemet-ds-p2-benefits-packaging.png", "ds", 2, [40, 100, 810, 540], "p.2 packaging C-spec (TU = 7 inch reel, unmarked) and benefits (no capacitance change with applied rated DC voltage, no decay with time)"),
    ("kemet-ds-p3-dimensions.png", "ds", 3, [40, 100, 810, 790], "p.3 dimensions: 1812 L 4.50 +/-0.30, W 3.20 +/-0.30, B 0.60 +/-0.35, S 2.30 min (mm)"),
    ("kemet-ds-p4-electrical.png", "ds", 4, [40, 100, 810, 690], "p.4 electrical parameters: -55 to +125 C, +/-30 ppm/C, 0 % aging, DWV 250 %, DF 0.1 %, IR"),
    ("kemet-ds-p8-waterfall-1812.png", "ds", 8, [40, 100, 810, 720], "p.8 Table 1B: 0.12 uF (124) in C1812C at 100 V (voltage code 1) has chip thickness code GH"),
    ("kemet-ds-p10-thickness.png", "ds", 10, [40, 100, 610, 960], "p.10 Table 2A: thickness code GH = 1.40 +/-0.15 mm; 1,000 pcs per 7 inch plastic reel"),
    ("kemet-ds-p12-land-pattern.png", "ds", 12, [40, 100, 810, 900], "p.12 Table 3: IPC-7351 land pattern for 1812 at density levels A, B and C"),
    ("kemet-ds-p13-soldering.png", "ds", 13, [40, 100, 810, 730], "p.13 soldering: reflow only for 1812, profile for 100 % matte Sn (260 C peak)"),
    ("kemet-ds-p15-marking.png", "ds", 15, [40, 100, 810, 780], "p.15 construction and marking: C0G devices are supplied unmarked only"),
]
P = dict(
    slug="c1812c124j1gactu", mpn="C1812C124J1GACTU", mfr="KEMET", mfr_full="KEMET Electronics Corporation (YAGEO Group)",
    source_slug="kemet", kind="C", category="Capacitor", subcategory="MLCC, Class 1 (C0G / NP0), commercial grade",
    value_sym="120n", value="0.12 uF (120 nF)", tol="+/-5 % (J)", package="1812 (4532 metric)",
    fp="C_1812_4532Metric", fp_lib="Capacitor_SMD", body_mm={"x_mm": 4.5, "y_mm": 3.2, "z_mm": 1.4},
    brief="MLCC 0.12 uF +/-5 %, 100 V, C0G/NP0, 1812 (4532 metric)",
    product_url=PRODUCT,
    dims_text="datasheet C1003_C0G p.3 (1812: L 4.50 +/-0.30, W 3.20 +/-0.30, B 0.60 +/-0.35, S 2.30 min) and p.8 + p.10 (0.12 uF, 100 V: thickness code GH, T 1.40 +/-0.15 mm)",
    overlay={"L": [4.5, 0.3], "W": [3.2, 0.3], "T": [1.4, 0.15], "band_top": [0.25, 0.95], "band_bot": [0.25, 0.95],
             "band_top_name": "B (band width), top", "band_bot_name": "B (band width), bottom", "ppmm": 100,
             "source": "KEMET C1003_C0G 2/20/2025 p.3 (1812) and p.10 (thickness code GH)"},
    land={"source": "KEMET C1003_C0G 2/20/2025 p.12, Table 3, 1812, density level B (median, nominal): C 2.05 (centre to pad centre), Y 1.40, X 3.50, V1 6.00, V2 4.00 mm",
          "kind": "nominal", "gap_a": 2.70, "len_b": 1.40, "wid_c": 3.50, "overall": 5.50,
          "letters": "gap = 2C - Y, land length = Y, land width = X, overall = 2C + Y (KEMET's letters C, Y, X)",
          "levels": {"A": {"C": 2.15, "Y": 1.60, "X": 3.60, "V1": 6.90, "V2": 4.60},
                     "B": {"C": 2.05, "Y": 1.40, "X": 3.50, "V1": 6.00, "V2": 4.00},
                     "C": {"C": 1.95, "Y": 1.20, "X": 3.40, "V1": 5.30, "V2": 3.70}}},
    marking="KEMET supplies C0G devices unmarked only (datasheet p.15), and the ordering code TU means 7 inch reel, unmarked (p.2)",
    marking_src="KEMET C1003_C0G 2/20/2025 p.2 and p.15",
    dist={"mouser": ("80-C1812C124J1G", "https://www.mouser.com/ProductDetail/KEMET/C1812C124J1GACTU?qs=Fn3VdHBzkcnCFZmhvW0Uag%3D%3D", 1701, "$2.98 (1), $1.79 (100), lead time 266 days"),
          "digikey": ("399-C1812C124J1GACTUTR-ND", "https://www.digikey.com/en/products/detail/kemet/C1812C124J1GACTU/1874760", 1761, "$3.53 (1)")},
    lcsc_note="JLCPCB/LCSC search for C1812C124J1GACTU returned no part on 2026-10-21",
)
PARTS = [P]