Cantara/.claude/skills/manufacturers/murata
.claude/skills/manufacturers/murata/SKILL.md
# Murata Part Number Reference ## MPN Structure Overview Murata part numbers follow a structured format that varies by product family: - **GRM/GCM**: Multilayer Ceramic Chip Capacitors (MLCC) - **LQM/LQW/LQG**: Chip Inductors - **BLM**: Ferrite Beads - **NFM**: EMI Suppression Filters - **DFE**: Power Inductors - **DLW**: Common Mode Choke Coils --- ## MLCC Capacitor Format (GRM/GCM Series) ``` GRM [Size] [Temp] [Voltage] [Value] [Tolerance] [Packaging] | | | | |
$ install --global
skillsauthnpx skillsauth add Cantara/lib-electronic-components .claude/skills/manufacturers/murataInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
Murata Part Number Reference
MPN Structure Overview
Murata part numbers follow a structured format that varies by product family:
- GRM/GCM: Multilayer Ceramic Chip Capacitors (MLCC)
- LQM/LQW/LQG: Chip Inductors
- BLM: Ferrite Beads
- NFM: EMI Suppression Filters
- DFE: Power Inductors
- DLW: Common Mode Choke Coils
MLCC Capacitor Format (GRM/GCM Series)
GRM [Size] [Temp] [Voltage] [Value] [Tolerance] [Packaging]
| | | | | | |
| | | | | | +-- Packaging code
| | | | | +-- Tolerance (J=5%, K=10%, M=20%)
| | | | +-- Capacitance value
| | | +-- Voltage rating code
| | +-- Temperature characteristic
| +-- Case size (188=0603, 155=0402, 21=0805)
+-- Series (GRM=Standard, GCM=Automotive)
Example Decoding
GRM188R71H104KA93D
| | | | | ||+-- Packaging (D=7" reel)
| | | | | |+-- Reserved
| | | | | +-- Tolerance (K=10%)
| | | | +-- Capacitance (104=100nF)
| | | +-- Voltage (1H=50V)
| | +-- Temperature characteristic (R7=X7R)
| +-- Case size (188=0603)
+-- Series (GRM=Standard MLCC)
Size Codes (Case Size)
| Code | Metric | Imperial | Notes | |------|--------|----------|-------| | 033 | 0201 | 01005 | Ultra-small | | 055 | 0402 | 0201 | Very small | | 155 | 0402 | 0201 | Standard | | 188 | 0603 | 0402 | Common | | 21 | 0805 | 0402 | Standard | | 31 | 1206 | 0603 | Common | | 32 | 1210 | 0805 | Large | | 55 | 2220 | 1210 | High capacity |
Temperature Characteristics
| Code | Characteristic | Temp Range | Tolerance | |------|----------------|------------|-----------| | C0 | C0G/NPO | -55C to +125C | 0 ppm/C | | R7 | X7R | -55C to +125C | +/-15% | | R6 | X5R | -55C to +85C | +/-15% | | F1 | Y5V | -30C to +85C | +22%/-82% |
Voltage Rating Codes
| Code | Voltage | |------|---------| | 0J | 6.3V | | 1C | 16V | | 1E | 25V | | 1H | 50V | | 2A | 100V | | 2E | 250V | | 2J | 630V |
Inductor Series (LQx)
LQM - Metal Power Inductors
LQM [Size] [Type] [Value] [Tolerance] [Packaging]
LQW - Wire Wound Inductors
LQW [Size] [Type] [Value] [Tolerance] [Packaging]
LQG - RF Chip Inductors
LQG [Size] [Type] [Value] [Tolerance] [Packaging]
EMI Components
BLM - Ferrite Beads
BLM [Size] [Series] [Impedance] [Current] [Packaging]
NFM - EMI Filters
NFM [Size] [Type] [Cutoff] [Rating] [Packaging]
Handler Implementation Notes
Package Code Extraction
The handler extracts size codes from positions 3-6 for GRM/GCM series:
// GRM/GCM series
if (mpn.startsWith("GRM") || mpn.startsWith("GCM")) {
return mpn.substring(3, 6); // Size code like "188", "155"
}
// LQx series inductors
if (mpn.matches("^LQ[MGW].*")) {
return mpn.substring(3, 7); // Size code like "2012"
}
Series Extraction
// GRM/GCM/KC series capacitors
if (mpn.matches("^(?:GRM|GCM|KC[ABMZ]).*")) {
return mpn.substring(0, 6); // Include size code
}
// LQx series inductors
if (mpn.matches("^LQ[MGW].*")) {
return mpn.substring(0, 7); // Include size code
}
Supported ComponentTypes
ComponentType.CAPACITOR
ComponentType.CAPACITOR_CERAMIC_MURATA
ComponentType.INDUCTOR
ComponentType.INDUCTOR_CHIP_MURATA
ComponentType.INDUCTOR_POWER_MURATA
ComponentType.EMI_FILTER_MURATA
ComponentType.COMMON_MODE_CHOKE_MURATA
Known Handler Issues
1. HashSet in getSupportedTypes()
Uses mutable HashSet instead of Set.of():
Set<ComponentType> types = new HashSet<>(); // Should be Set.of()
2. Pattern Anchoring
Some patterns use $ anchor which may miss parts with additional suffixes.
3. Limited Series Coverage
Only covers GRM, GCM, KC, LQM, LQW, LQG, DFE, BLM, NFM, DLW series. Missing resonators, sensors, and other Murata products.
Test Patterns
Valid MLCC MPNs
GRM188R71H104KA93D
GRM155R71C104KA88D
GCM188R71H104KA93D
GRM21BR71A105KA73L
GRM31CR71H475KA88L
Valid Inductor MPNs
LQM2MPN2R2MG0L
LQW18AN2N2D00D
LQG15HS2N2S02D
DFE201612P-1R0M
Valid EMI MPNs
BLM15AG121SN1D
NFM41PC104R1E3L
DLW5BTM102SQ2L
Related Files
- Handler:
manufacturers/MurataHandler.java - Component types: CAPACITOR_CERAMIC_MURATA, INDUCTOR_CHIP_MURATA, INDUCTOR_POWER_MURATA, EMI_FILTER_MURATA, COMMON_MODE_CHOKE_MURATA
- Test:
handlers/MurataHandlerTest.java
Learnings & Edge Cases
- GCM series is automotive grade, same structure as GRM
- KC series is high voltage MLCC with slightly different prefix pattern
- Inductor size codes are 4 digits (e.g., 2012) vs capacitor 3 digits (e.g., 188)
- Packaging codes vary: D=7" reel, J=13" reel, B=bulk, etc.
- Temperature characteristics determine voltage derating behavior
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