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Is Similarity Resistor free to use?

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Who published Similarity Resistor?

majiayu000 (@majiayu000) published this skill. Their other Agent Skills are listed on their SkillMD profile.

Similarity Resistor by majiayu000 — Agent Skill

Name: Similarity Resistor
Rating: 4.5 (4 reviews)
Author: majiayu000

File contents

Resistor Similarity Calculator Skill

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

Overview

The ResistorSimilarityCalculator compares resistors based on:

Package size (0.3 weight) - 0402, 0603, 0805, etc.
Resistance value (0.5 weight) - 10K, 100R, 4.7K, etc.

Maximum similarity is 0.8 (not 1.0) since tolerance and other specs aren't always extractable.

Applicable Types

ComponentType.RESISTOR
ComponentType.RESISTOR_CHIP_VISHAY
ComponentType.RESISTOR_CHIP_YAGEO
ComponentType.RESISTOR_CHIP_PANASONIC
ComponentType.RESISTOR_CHIP_BOURNS
// Any type starting with "RESISTOR_"

Similarity Scoring

Condition	Score
Same value, same package	0.8
Same value, different package	0.5
Same package, different value	0.3
Different value, different package	0.0

Value Extraction

The calculator extracts resistance values from MPNs:

MPN	Extracted Value
`CRCW060310K0FKEA`	10K (10kΩ)
`RC0603FR-0710KL`	10K (10kΩ)
`ERJ3GEYJ103V`	10K (103 = 10×10³)

Package Size Extraction

Common package codes in MPNs:

Pattern	Package
`0603`	0603 (1608 metric)
`0805`	0805 (2012 metric)
`1206`	1206 (3216 metric)

Cross-Manufacturer Matching

The calculator can match equivalent resistors across manufacturers:

// Vishay 0603 10K vs Yageo 0603 10K
calculator.calculateSimilarity("CRCW060310K0FKEA", "RC0603FR-0710KL", registry);
// Returns >= 0.5 (both are 10K, may have same package)

Test Examples

// Same Vishay resistor - max similarity
calculator.calculateSimilarity("CRCW060310K0FKEA", "CRCW060310K0FKEA", registry);
// Returns 0.8

// Same value, different package
calculator.calculateSimilarity("CRCW060310K0FKEA", "CRCW080510K0FKEA", registry);
// Returns 0.5

// Same package, different value
calculator.calculateSimilarity("CRCW0603100RFKEA", "CRCW060310K0FKEA", registry);
// Returns 0.3 (100R vs 10K)

Implementation Notes

Returns 0.0 for null MPNs or null registry
Returns 0.0 for empty strings
Handles unrecognized formats gracefully (returns 0.0-1.0)

Learnings & Quirks

Value Notation

E96 notation: 103 = 10×10³ = 10kΩ, 4R7 = 4.7Ω
Yageo TCR code -07 is NOT a separator, it's temperature coefficient

Package Extraction

Some MPNs embed package in series name (e.g., RC0603)
Others have separate position (e.g., CRCW + 0603)

---name: similarity-resistordescription: Use when working with resistor similarity calculations - comparing resistor MPNs, understanding value/tolerance/package matching, or implementing resistor-specific similarity logic.--- # Resistor Similarity Calculator Skill Guidance for working with `ResistorSimilarityCalculator` in the lib-electronic-components library. ## Overview The `ResistorSimilarityCalculator` compares resistors based on: - **Package size** (0.3 weight) - 0402, 0603, 0805, etc. - **Resistance value** (0.5 weight) - 10K, 100R, 4.7K, etc. Maximum similarity is 0.8 (not 1.0) since tolerance and other specs aren't always extractable. ## Applicable Types ```java ComponentType.RESISTOR ComponentType.RESISTOR_CHIP_VISHAY ComponentType.RESISTOR_CHIP_YAGEO ComponentType.RESISTOR_CHIP_PANASONIC ComponentType.RESISTOR_CHIP_BOURNS // Any type starting with "RESISTOR_" ``` ## Similarity Scoring | Condition | Score | |-----------|-------| | Same value, same package | 0.8 | | Same value, different package | 0.5 | | Same package, different value | 0.3 | | Different value, different package | 0.0 | ## Value Extraction The calculator extracts resistance values from MPNs: | MPN | Extracted Value | |-----|-----------------| | `CRCW060310K0FKEA` | 10K (10kΩ) | | `RC0603FR-0710KL` | 10K (10kΩ) | | `ERJ3GEYJ103V` | 10K (103 = 10×10³) | ## Package Size Extraction Common package codes in MPNs: | Pattern | Package | |---------|---------| | `0603` | 0603 (1608 metric) | | `0805` | 0805 (2012 metric) | | `1206` | 1206 (3216 metric) | ## Cross-Manufacturer Matching The calculator can match equivalent resistors across manufacturers: ```java // Vishay 0603 10K vs Yageo 0603 10K calculator.calculateSimilarity("CRCW060310K0FKEA", "RC0603FR-0710KL", registry); // Returns >= 0.5 (both are 10K, may have same package) ``` ## Test Examples ```java // Same Vishay resistor - max similarity calculator.calculateSimilarity("CRCW060310K0FKEA", "CRCW060310K0FKEA", registry); // Returns 0.8 // Same value, different package calculator.calculateSimilarity("CRCW060310K0FKEA", "CRCW080510K0FKEA", registry); // Returns 0.5 // Same package, different value calculator.calculateSimilarity("CRCW0603100RFKEA", "CRCW060310K0FKEA", registry); // Returns 0.3 (100R vs 10K) ``` ## Implementation Notes - Returns 0.0 for null MPNs or null registry - Returns 0.0 for empty strings - Handles unrecognized formats gracefully (returns 0.0-1.0) --- ## Learnings & Quirks ### Value Notation - E96 notation: `103` = 10×10³ = 10kΩ, `4R7` = 4.7Ω - Yageo TCR code `-07` is NOT a separator, it's temperature coefficient ### Package Extraction - Some MPNs embed package in series name (e.g., `RC0603`) - Others have separate position (e.g., `CRCW` + `0603`)

Frequently asked questions