yageo_rc module#

Yageo RC_L general-purpose chip resistor family (parameterized).

This models Yageo’s RC_L thick-film chip resistor series as a single parameterized jitx.Component. One class covers every catalog part in the family: choose a case size, resistance, and tolerance and the component builds the matching land pattern, resistor symbol, and Yageo global part number with no parts-database or online lookup. It is a drop-in alternative to jitxlib.parts.Resistor and provides a matching YageoRC.insert() helper.

Supported case sizes: the full RC_L family — 0075, 0100, 0201, 0402, 0603, 0805, 1206, 1210, 1218, 2010, 2512. The two ultra-tiny sizes (0075, 0100) are ESD-reel-only parts (packaging code S); JITX’s chip land-pattern generator keys them by metric body size (0075 -> 009005, 0100 -> 01005) rather than the Yageo label.

Datasheet (RC_L series, doc rev. 14); all dimensions below are transcribed from its Table 1: https://yageogroup.com/content/datasheet/asset/file/PYU-RC_GROUP_51_ROHS_L

Land-pattern construction, two-pin .insert(), value-code rounding, and the E-series check are shared with the other chip-resistor families via chip_smt.

format_resistance_code(ohms, *, sig_figs=3)[source]#

Encode a resistance as a Yageo / IEC-60062 RKM part-number field.

The multiplier letter doubles as the decimal point: R = x1, K = x1e3, M = x1e6. The mantissa carries up to sig_figs significant digits; the value is first rounded to that resolution so decade carries propagate.

Return type:

str

Parameters:
>>> format_resistance_code(4.7)
'4R7'
>>> format_resistance_code(9760)
'9K76'
>>> format_resistance_code(100_000)
'100K'
>>> format_resistance_code(9999)
'10K'
class YageoRC(*, resistance: float, size: str = '0402', tolerance: float = 0.01, packaging: str | None = None, reel_power_code: str | None = None, check_eseries: bool = False)[source]#

Bases: Component

A Yageo RC_L general-purpose chip resistor, built from datasheet data.

Parameters:

  • resistance (float) – Resistance in ohms (must be > 0).

  • size (str) – Imperial case code, e.g. "0603". Any of the 11 RC_L sizes (0075-2512).

  • tolerance (float) – Tolerance as a fraction: 0.001/0.005/0.01/0.05 (codes B/D/F/J).

  • packaging (str | None) – Packaging-type code. None uses the size’s default — "R" (paper reel) for standard sizes, "S" (ESD reel) for 0075. Valid options are per-size: R/K for 0201-2512, S for 0075, R/S for 0100.

  • reel_power_code (str | None) – Reel/power ordering field (datasheet field 5). None uses "7N" for ESD (S) packaging else "07". The rated power is derived from this and the size; "7W"/"3W" select double power.

  • check_eseries (bool) – If true, validate resistance against the E24/E96 grid.

datasheet: str#
case: str#
tolerance: float#
power: float#
max_voltage: int#
symbol: Symbol#
landpattern: Landpattern#
p1: Port#
p2: Port#
insert(pin_a, pin_b, *, short_trace=False)[source]#

Place this resistor between two pins/nets of the active circuit.

Mirrors jitxlib.parts.Resistor.insert(); see chip_smt.insert_two_pin().

Return type:

Self

Parameters:
Device#

alias of YageoRC