Capacitor Component Skill

Name: capacitor
Rating: 78
Author: Cantara

Guidance for working with capacitor components in the lib-electronic-components library.

Supported Manufacturers & Patterns

Manufacturer	Handler	MPN Patterns	Example
Murata	`MurataHandler`	`GRM...`, `GCM...`, `KCA...`	`GRM188R71H104KA93D`
Samsung	`SamsungHandler`	`CL10B...`, `CL21B...`, `CL31B...`	`CL10B104KB8NNNC`
TDK	`TDKHandler`	`CH#...`, `MLF#...`	`C1608X5R1C104K`
Yageo	`YageoHandler`	`CC####...`	`CC0603KRX7R9BB104`
KEMET	`KemetHandler`	`C####...`	`C0603C104K5RACTU`
AVX	`AVXHandler`	`TAJ...`, `TPS...`, `TCJ...`	`TAJB106K016RNJ`
Nichicon	`NichiconHandler`	`UUD...`, `UPW...`, `UVR...`	`UUD1C101MCL1GS`
Panasonic	`PanasonicHandler`	`ECQ...`, `EEF...`, `ECA...`	`EEEFC1V100P`

ComponentTypes

java

// Base type
ComponentType.CAPACITOR

// Manufacturer-specific types
ComponentType.CAPACITOR_CERAMIC_MURATA
ComponentType.CAPACITOR_CERAMIC_TDK
ComponentType.CAPACITOR_CERAMIC_SAMSUNG
ComponentType.CAPACITOR_CERAMIC_YAGEO
ComponentType.CAPACITOR_CERAMIC_KEMET
ComponentType.CAPACITOR_CERAMIC_AVX
ComponentType.CAPACITOR_TANTALUM_KEMET
ComponentType.CAPACITOR_TANTALUM_AVX
ComponentType.CAPACITOR_ELECTROLYTIC_PANASONIC
ComponentType.CAPACITOR_ELECTROLYTIC_NICHICON
ComponentType.CAPACITOR_FILM_KEMET
ComponentType.CAPACITOR_FILM_PANASONIC
ComponentType.CAPACITOR_POLYMER_AVX

MPN Structure

Murata GRM Series (MLCC)

code

GRM 188 R7 1H 104 K A93 D
│   │   │  │  │   │ │   │
│   │   │  │  │   │ │   └── Packaging (D=180mm Reel)
│   │   │  │  │   │ └────── Special code
│   │   │  │  │   └──────── Tolerance (K=±10%)
│   │   │  │  └──────────── Value (104=100nF)
│   │   │  └─────────────── Voltage (1H=50V)
│   │   └────────────────── Dielectric (R7=X7R)
│   └────────────────────── Size (188=0603)
└────────────────────────── Series (GRM=General)

KEMET C Series

code

C 0603 C 104 K 5R AC TU
│ │    │ │   │ │  │  │
│ │    │ │   │ │  │  └── Packaging (TU=7" Reel)
│ │    │ │   │ │  └───── Termination (AC=Flex)
│ │    │ │   │ └──────── Voltage (5R=50V)
│ │    │ │   └────────── Tolerance (K=±10%)
│ │    │ └────────────── Value (104=100nF)
│ │    └──────────────── Dielectric (C=X7R)
│ └───────────────────── Size (0603)
└─────────────────────── Series

Dielectric Types

Code	Type	Temp Range	Capacitance Change
C0G/NP0	Class I	-55°C to +125°C	±30ppm/°C
X7R	Class II	-55°C to +125°C	±15%
X5R	Class II	-55°C to +85°C	±15%
Y5V	Class II	-30°C to +85°C	+22%/-82%

Adding New Capacitor Patterns

•In the manufacturer handler's initializePatterns():

java

registry.addPattern(ComponentType.CAPACITOR, "^NEWCAP[0-9]{4}.*");
registry.addPattern(ComponentType.CAPACITOR_CERAMIC_MANUFACTURER, "^NEWCAP[0-9]{4}.*");

•Add to getSupportedTypes():

java

types.add(ComponentType.CAPACITOR);
types.add(ComponentType.CAPACITOR_CERAMIC_MANUFACTURER);

Similarity Calculation

CapacitorSimilarityCalculator compares:

•Capacitance value
•Voltage rating
•Dielectric type (C0G, X7R, X5R, etc.)
•Package size
•Tolerance

Common Package Sizes

Code	Metric	Size (mm)
0402	1005	1.0 x 0.5
0603	1608	1.6 x 0.8
0805	2012	2.0 x 1.25
1206	3216	3.2 x 1.6

Murata Size Codes

Code	Imperial
155	0402
188	0603
21	0805
31	1206
32	1210

Learnings & Quirks