Cantara/cosmo
.claude/skills/manufacturers/cosmo/SKILL.md
Cosmo Electronics MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Cosmo optocouplers or CosmoHandler.
$ install --global
skillsauthnpx skillsauth add Cantara/lib-electronic-components cosmoInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
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SKILL.md
- name:
- cosmo
- description:
- Cosmo Electronics MPN encoding patterns, suffix decoding, and handler guidance. Use when working with Cosmo optocouplers or CosmoHandler.
Cosmo Electronics Manufacturer Skill
Overview
Cosmo Electronics is a Taiwanese manufacturer specializing in optocouplers and photo interrupters. Their product lines use the "KP" prefix family.
MPN Structure
Cosmo MPNs follow these general patterns:
KP Series (Phototransistor Optocouplers)
KP[SERIES][VARIANT][-SUFFIX]
| | |
| | +-- Optional: -1=DIP-4, C/S=SMD
| +-- Variant letter (optional)
+-- 4-digit series (e.g., 1010, 2010, 4010)
KPC Series (High Isolation)
KPC[SERIES][CTR-GRADE][PKG-IND][-SUFFIX]
| | | |
| | | +-- Optional suffix
| | +-- Package indicator (S/G=SMD, T=SOP)
| +-- CTR Grade: A/B/C/D
+-- 3-digit series (e.g., 817, 357)
Example Decoding
KP1010-1
| | |
| | +-- -1 = DIP-4 package
| +-- 1010 = Single channel phototransistor
+-- KP = Phototransistor optocoupler series
KPC817C-1
| | | |
| | | +-- -1 = DIP-4 package
| | +-- C = CTR grade (200-400%)
| +-- 817 = General purpose high isolation
+-- KPC = High isolation optocoupler
KPH121S
| | |
| | +-- S = SMD package
| +-- 121 = High speed single channel
+-- KPH = High speed optocoupler
Product Lines
KP Series - Phototransistor Optocouplers
| Series | Description | Channels | |--------|-------------|----------| | KP1010 | Single channel phototransistor | 1 | | KP1020 | Single channel (variant) | 1 | | KP2010 | Dual channel phototransistor | 2 | | KP4010 | Quad channel phototransistor | 4 |
KPC Series - High Isolation Optocouplers
| Series | Description | Output | |--------|-------------|--------| | KPC817 | General purpose, high isolation | Phototransistor | | KPC357 | Darlington output | Darlington |
Note: KPC817 is functionally equivalent to Sharp PC817.
KPH Series - High Speed Optocouplers
| Series | Description | Channels | |--------|-------------|----------| | KPH121 | High speed single channel | 1 | | KPH141 | High speed dual channel | 2 |
KPS Series - SMD Optocouplers
| Series | Description | Package | |--------|-------------|---------| | KPS1010 | SMD version of KP1010 | SMD | | KPS2010 | SMD version of KP2010 | SMD |
KPTR Series - Reflective Sensors
| Series | Description | Type | |--------|-------------|------| | KPTR1200 | Reflective photo interrupter | Sensor | | KPTR1201 | Reflective photo interrupter | Sensor |
CTR (Current Transfer Ratio) Grades
For KPC817 series:
| Grade | CTR Range | Application | |-------|-----------|-------------| | A | 80-160% | Highest gain | | B | 130-260% | High gain | | C | 200-400% | Medium gain | | D | 300-600% | Wide range |
Package Codes
Suffix-Based Packages
| Suffix | Package | Notes | |--------|---------|-------| | -1 | DIP-4 | Standard 4-pin DIP | | C | SMD | Compact SMD variant | | S | SMD | Surface mount | | G | SMD | SMD variant | | T | SOP | Thin SOP variant | | -F | Lead-free | RoHS compliant | | -TR | Tape and reel | Packaging option |
Default Packages by Series
| Prefix | Default Package | |--------|-----------------| | KP | DIP-4 | | KPC | DIP-4 | | KPH | DIP | | KPS | SMD (always) | | KPTR | SMD (always) |
Channel Count by Series
| Series Pattern | Channels | |----------------|----------| | 1010, 1020, 817, 357, 121, 1200, 1201 | 1 | | 2010, 141 | 2 | | 4010 | 4 |
Handler Implementation Notes
Pattern Matching
// KP series: 4-digit series number
"^KP\\d{4}.*" // KP1010, KP2010, KP4010
// KPC series: 3-digit series number
"^KPC\\d{3}.*" // KPC817, KPC357
// KPH series: 3-digit series number
"^KPH\\d{3}.*" // KPH121, KPH141
// KPS series: 4-digit series number
"^KPS\\d{4}.*" // KPS1010, KPS2010
// KPTR series: 4-digit series number
"^KPTR\\d{4}.*" // KPTR1200, KPTR1201
Series Extraction
// Returns prefix + series number
"KP1010-1" -> "KP1010"
"KPC817C" -> "KPC817"
"KPH121S" -> "KPH121"
"KPS2010C" -> "KPS2010"
"KPTR1200" -> "KPTR1200"
Package Extraction Logic
// Check for -1 suffix first
"KPC817C-1" -> "DIP-4"
// KPS series is always SMD
"KPS1010" -> "SMD"
// KPTR series is always SMD
"KPTR1200" -> "SMD"
// Check package indicators for KPC
"KPC817CS" -> "SMD" // S = SMD
"KPC817CT" -> "SOP" // T = SOP thin
// Check variant letter for KP/KPH
"KP1010C" -> "SMD"
"KPH121S" -> "SMD"
// Default packages
"KP1010" -> "DIP-4"
"KPC817C" -> "DIP-4"
"KPH121" -> "DIP"
CTR Grade Extraction
// KPC series: letter after 3-digit number
"KPC817A" -> "A"
"KPC817B-1" -> "B"
"KPC817CS" -> "C" // C is CTR, S is package
Component Types
The handler maps to these ComponentTypes:
| Prefix | ComponentTypes | |--------|----------------| | KP, KPC, KPH, KPS | IC, OPTOCOUPLER_TOSHIBA | | KPTR | IC, SENSOR |
Note: Uses OPTOCOUPLER_TOSHIBA as the generic optocoupler type (historical naming).
Cross-Reference / Equivalents
| Cosmo | Equivalent | Notes | |-------|------------|-------| | KPC817 | Sharp PC817 | Pin-compatible | | KPC817 | Toshiba TLP817 | Pin-compatible | | KPC357 | Sharp PC357 | Darlington output |
Related Files
- Handler:
manufacturers/CosmoHandler.java - Component types:
ComponentType.IC,ComponentType.OPTOCOUPLER_TOSHIBA,ComponentType.SENSOR
Learnings & Edge Cases
- CTR grade vs package indicator: For KPC series, the first letter after digits is CTR grade (A-D), subsequent letters may be package indicators (S/G/T). Order matters.
- KPS always SMD: The KPS prefix indicates SMD package regardless of any suffix.
- KPTR is a sensor: KPTR series are reflective sensors, not optocouplers. They map to SENSOR type.
- Channel count from series: 1010/1020 = single, 2010 = dual, 4010 = quad. The first digit often indicates channel count.
- Replacement compatibility: Same series with different packages (DIP vs SMD) are not direct replacements due to footprint differences.
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