component

EEEFK1A121SR

Public Made by Adom

by adom

PANASONIC Aluminum Electrolytic Capacitors - SMD, SMD,D5xL5.8mm. Polarised capacitor: pin 1 is + by the KiCad polarised-footprint convention, KiCad symbol/footprint/3D.

componentcapacitorseeefk1a121srfactory-2.0.0extractor-text

Verified EEEFK1A121SR

by Ray · last 11 Nov 2026 · 1 record, 1 retired · files match
SymbolFootprint3D modelPins

Verification log 2 records

11 Nov 2026RaySupersedes the earlier record: that check missed polarity (the pins said "unpolarised"; this capacitor is polarised): component-page-verify now PASSESfiles match
SymbolFootprint3D modelPinsfor all variants
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: EEEFK1A121SR · CP_Elec_5x5.8 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: two-terminal part whose datasheet prints no pin numbers: pins 1 and 2 by library convention, no names to check
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: CP_Elec_5x5.8
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-j4z20qp3/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.1)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓viewers: viewers/footprint.html 9 kB, viewers/symbol.html 6 kB
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ eeefk1a121sr.kicad_sym✓ eeefk1a121sr.kicad_mod✓ eeefk1a121sr.step
6 Nov 2026RayPublished by the parts factory: tier lcsc, 2 pinssuperseded
SymbolFootprint3D modelPinsfor all variants
  • ✓component-page-verify: PASS
  • ✓cad_props: Datasheet, MPN and distributor properties match page.json
  • ✓component: EEEFK1A121SR · CP_Elec_5x5.8 · 2 pins
  • ✓copper: 2 copper pads, none touching another net
  • ✓datasheet: unpolarised two-terminal part: pins 1 and 2 by library convention, no names to check
  • •distributor (warn): no ['digikey', 'mouser'] number
  • ✓family: CP_Elec_5x5.8
  • ✓files: 7 declared files present
  • ✓hero: docs/hero.png 4000x2500
  • ✓lbr: OK: /tmp/cpv-dqdyb4l5/x.lbr is a valid EAGLE .lbr with complete deviceset
  • ✓license: CC-BY-SA-4.0
  • ✓models_3d: 2 records
  • ✓package_fit: height and body within the datasheet's package drawing (datasheet p.1)
  • ✓pads: 2 pins = 2 pads
  • ✓pose: 2 STEP(s) Z-up, seated, centred
  • ✓symbol: 2 pins agree
  • ✓symbol_text: no pin names collide
  • ✓visibility: public, source open
Evidencedatasheet
Verified files✓ eeefk1a121sr.kicad_sym✓ eeefk1a121sr.kicad_mod✓ eeefk1a121sr.step
Retired by Ray on 11 Nov 2026: Retired: this check called a polarised capacitor an unpolarised two-terminal part. Fixed in component-page-verify 0.5.13 (an unrecorded polarity now fails) and 0.5.14 (the datasheet row no longer says unpolarised).
Spot something wrong? Report it as an issue Propose a fix Records are signed by members of adom.
Overview Files Discover Packages Releases Dependencies Issues Breadcrumbs Pull Requests Activity
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eeefk1a121sr / README.md
History Download
Ray Polarity: pin 1 = +, 2 = - (symbol, footprint and 3D agree); brief and README corrected 49c72b0

EEEFK1A121SR

PANASONIC · Aluminum Electrolytic Capacitors - SMD · CP_Elec_5x5.8

EEEFK1A121SR from PANASONIC, in a CP_Elec_5x5.8. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 + passive Positive terminal (pad 1 of the CP_ footprint; symbol and 3D mark the + end).
2 - passive Negative terminal.

Key specifications

Parameter Value
Manufacturer PANASONIC
Package CP_Elec_5x5.8
Category Capacitors
Pins 2

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Capacitance tolerance C -20 20 % 120 Hz/+20 °C 1
Capacitance change after endurance -30 30 % After 2000 h at +105 °C ±2 °C at rated voltage, then stabilized at +20 °C 1
tan d after endurance tan d 200 % After 2000 h at +105 °C ±2 °C at rated voltage; % of initial limit 1
Capacitance change after resistance to soldering heat -10 10 % After reflow soldering, then stabilized at +20 °C 1
DC leakage current I 3 µA After 2 minutes; I < 0.01 CV or 3 µA, whichever is greater 1
Dissipation factor (tan d) tan d 0.19 120 Hz, +20 °C 2
Impedance ratio Z(-25 °C)/Z(+20 °C) Z(-25 °C)/Z(+20 °C) 2 120 Hz; 10 V.DC column 1
Impedance ratio Z(-40 °C)/Z(+20 °C) Z(-40 °C)/Z(+20 °C) 3 120 Hz; 10 V.DC column 1
Impedance ratio Z(-55 °C)/Z(+20 °C) Z(-55 °C)/Z(+20 °C) 4 120 Hz; 10 V.DC column 1
Category temperature range -55 105 °C 1
Rated voltage 10 V.DC Rated voltage code 1A (10 V.DC row) 2
Capacitance (nominal) C 120 µF 2
ESR ESR 0.7 Ω 100 kHz, +20 °C 2
Ripple current 160 mA r.m.s. 100 kHz, +105 °C 2

CAD (KiCad official)

  • Symbol: EEEFK1A121SR
  • Footprint: Capacitor_SMD:CP_Elec_5x5.8
  • 3D model: CP_Elec_5x5.8 (KiCad packages3D, STEP)
  • 3D model files: eeefk1a121sr-etched.step / eeefk1a121sr-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); eeefk1a121sr.step / eeefk1a121sr.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: PANASONIC datasheet (2 pp, sha256 9686dd1ffdec3d4a, retrieved 2026-11-06, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins, primary two-terminal convention (convention), consensus off (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF