resistor
Use when working with resistor components - adding resistor patterns, parsing resistor MPNs, extracting resistance values, tolerance, or package codes from resistor part numbers.
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소스 지침 · 읽기 전용 미리보기- name
- resistor
- description
- Use when working with resistor components - adding resistor patterns, parsing resistor MPNs, extracting resistance values, tolerance, or package codes from resistor part numbers.
# Resistor Component Skill
Guidance for working with resistor components in the lib-electronic-components library.
## Supported Manufacturers & Patterns
| Manufacturer | Handler | MPN Patterns | Example |
|--------------|---------|--------------|---------|
| Vishay | `VishayHandler` | `CRCW####...`, `RCG#...`, `WSL#...` | `CRCW060310K0FKEA` |
| Yageo | `YageoHandler` | `RC####...`, `RT####...`, `RL####...` | `RC0603FR-0710KL` |
| Panasonic | `PanasonicHandler` | `ERJ...`, `ERJP...`, `ERJG...` | `ERJ-3EKF1001V` |
| Bourns | `BournsHandler` | `CR...`, `CRM...`, `CRH...` | `CR0603-FX-1001ELF` |
## ComponentTypes
```java
// Base type
ComponentType.RESISTOR
// Manufacturer-specific types
ComponentType.RESISTOR_CHIP_VISHAY
ComponentType.RESISTOR_THT_VISHAY
ComponentType.RESISTOR_CHIP_YAGEO
ComponentType.RESISTOR_THT_YAGEO
ComponentType.RESISTOR_CHIP_PANASONIC
ComponentType.RESISTOR_CHIP_BOURNS
```
## MPN Structure
### Vishay CRCW Series
```
CRCW 0603 10K0 F K EA
│ │ │ │ │ │
│ │ │ │ │ └── Packaging (EA=Tape & Reel)
│ │ │ │ └──── Termination (K=Standard)
│ │ │ └────── Tolerance (F=1%, J=5%)
│ │ └─────────── Value (10K0 = 10kΩ)
│ └──────────────── Size (0603)
└───────────────────── Series
```
### Yageo RC Series
```
RC 0603 FR -07 10K L
│ │ │ │ │ │
│ │ │ │ │ └── Packaging (L=7" Reel)
│ │ │ │ └────── Value (10K = 10kΩ)
│ │ │ └───────── TCR Code (07=±100ppm)
│ │ └───────────── Tolerance (F=1%, J=5%)
│ └────────────────── Size (0603)
└───────────────────── Series (RC=Thick Film)
```
## Key Handler Methods
### Extract Package Code
```java
// Returns "0603" from "CRCW060310K0FKEA"
handler.extractPackageCode("CRCW060310K0FKEA");
// Returns "0805" from "RC0805JR-0710KL"
handler.extractPackageCode("RC0805JR-0710KL");
```
### Extract Series
```java
// Returns "CRCW" from Vishay
handler.extractSeries("CRCW060310K0FKEA");
// Returns "RC0603" from Yageo (includes size)
handler.extractSeries("RC0603FR-0710KL");
```
## Adding New Resistor Patterns
1. In the manufacturer handler's `initializePatterns()`:
```java
registry.addPattern(ComponentType.RESISTOR, "^NEWPFX[0-9]{4}.*");
registry.addPattern(ComponentType.RESISTOR_CHIP_MANUFACTURER, "^NEWPFX[0-9]{4}.*");
```
2. Add to `getSupportedTypes()`:
```java
types.add(ComponentType.RESISTOR);
types.add(ComponentType.RESISTOR_CHIP_MANUFACTURER);
```
3. Implement `matches()` for direct pattern matching (faster than regex fallback)
## Similarity Calculation
`ResistorSimilarityCalculator` compares:
- Resistance value (extracted from MPN)
- Package size (0402, 0603, 0805, etc.)
- Tolerance class (1%, 5%, etc.)
- Power rating (if determinable)
## 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 |
| 2512 | 6332 | 6.3 x 3.2 |
---
## Learnings & Quirks
<!-- Record component-specific discoveries, edge cases, and quirks here -->
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