Cantara/vialabs
.claude/skills/manufacturers/vialabs/SKILL.md
VIA Labs (ViaLabs) MPN encoding patterns, series identification, and handler guidance. Use when working with USB hub/PD controller ICs or ViaLabsHandler.
$ install --global
skillsauthnpx skillsauth add Cantara/lib-electronic-components vialabsInstall this skill globally with one command. Works with Claude Code, Cursor, and Windsurf.
Security Scan Results
3 of 9 scanners reported clean
Some scanners were skipped, did not run, or reported a non-clean status. Review each row below.
3
Scanners Passed
9
Scanners in report
Clean
TrivyContainer and dependency vulnerability scanner
95%
Clean
SemgrepStatic code analysis for vulnerabilities
95%
Clean
mcp-scan (Snyk)Model Context Protocol security validation
95%
Skipped
Snyk (dep)Open source security scanning
50%
Skipped
Socket.devSupply chain security analysis
50%
Skipped
VirusTotalMulti-engine malware detection
50%
Skipped
CrowdStrikeAdvanced threat intelligence
50%
Skipped
OSV-ScannerOpen Source Vulnerability database check
50%
Skipped
OWASP Dep-Check
50%
Last scanned: Apr 24, 2026, 8:56 PM2.0s1 file scanned
SKILL.md
- name:
- vialabs
- description:
- VIA Labs (ViaLabs) MPN encoding patterns, series identification, and handler guidance. Use when working with USB hub/PD controller ICs or ViaLabsHandler.
VIA Labs Manufacturer Skill
MPN Structure
VIA Labs MPNs follow this general structure:
VL[SERIES][VARIANT][PACKAGE][-REEL]
| | | | |
| | | | └── Optional: REEL, TR, TUBE, TRAY for packaging
| | | └── Package code (Q, L, B, T, or explicit QFN/LQFP)
| | └── Variant letter (optional)
| └── 3-digit series number (7xx, 8xx, 82x, 10x)
└── VL = VIA Labs prefix
Example Decoding
VL817-Q7
│ │ │
│ │ └── Q7 = QFN package variant
│ └── 817 = USB 3.0 hub controller
└── VL = VIA Labs prefix
VL822
│ │
│ └── 822 = USB 3.2 hub controller
└── VL = VIA Labs prefix
Product Series
VL7xx Series - USB 2.0 Hub Controllers
| Series | Ports | Description | |--------|-------|-------------| | VL750 | 4 | USB 2.0 4-port hub | | VL751 | 4 | USB 2.0 4-port hub (variant) | | VL752 | 7 | USB 2.0 7-port hub |
VL8xx Series - USB 3.0 Hub Controllers
| Series | Ports | Description | |--------|-------|-------------| | VL812 | 4 | USB 3.0 4-port hub (1st gen) | | VL813 | 4 | USB 3.0 4-port hub (2nd gen) | | VL815 | 4 | USB 3.0 4-port hub (3rd gen) | | VL817 | 4 | USB 3.0 4-port hub (latest) |
VL82x Series - USB 3.2 Hub Controllers
| Series | Ports | Description | |--------|-------|-------------| | VL820 | 4 | USB 3.2 4-port hub | | VL822 | 4 | USB 3.2 4-port hub (2nd gen) | | VL823 | 4 | USB 3.2 4-port hub (latest) |
VL10x Series - USB Power Delivery Controllers
| Series | Type | Description | |--------|------|-------------| | VL100 | PD | USB Power Delivery controller | | VL102 | PD | USB PD controller (variant) | | VL103 | PD | USB PD controller (latest) |
Package Codes
| Code | Package | Notes | |------|---------|-------| | Q | QFN | Quad Flat No-Lead | | QFN | QFN | Explicit form | | L | LQFP | Low-profile Quad Flat Package | | LQFP | LQFP | Explicit form | | B | BGA | Ball Grid Array | | T | TQFP | Thin Quad Flat Package |
USB Version by Series
| Series | USB Version | |--------|-------------| | VL750 | USB 2.0 | | VL751 | USB 2.0 | | VL752 | USB 2.0 | | VL812 | USB 3.0 | | VL813 | USB 3.0 | | VL815 | USB 3.0 | | VL817 | USB 3.0 | | VL820 | USB 3.2 | | VL822 | USB 3.2 | | VL823 | USB 3.2 | | VL10x | USB PD |
Generation/Evolution
USB 3.0 Hub Evolution
VL812 (Gen 1) -> VL813 (Gen 2) -> VL815 (Gen 3) -> VL817 (Gen 4 - Latest)
USB 3.2 Hub Evolution
VL820 (Gen 1) -> VL822 (Gen 2) -> VL823 (Gen 3 - Latest)
Handler Implementation Notes
Pattern Matching
// VL7xx series - USB 2.0 hub controllers
"^VL7[0-9]{2}[A-Z]*.*"
// VL8xx series - USB 3.0 hub controllers
"^VL8[0-9]{2}[A-Z]*.*"
// VL82x series - USB 3.2 hub controllers (more specific)
"^VL82[0-9][A-Z]*.*"
// VL10x series - USB Power Delivery controllers
"^VL10[0-9][A-Z]*.*"
Series Extraction
// Series is always "VL" + 3 digits = 5 characters
// VL817-Q7 -> VL817
// VL822 -> VL822
if (upperMpn.matches("^VL8[0-9]{2}.*")) {
return upperMpn.substring(0, 5);
}
Package Code Extraction
// Handle suffix after hyphen
// VL817-Q7 -> Q -> QFN
// Handle trailing suffix without hyphen
// VL817Q -> Q -> QFN
Replacement Compatibility
USB 2.0 Hub Family
All VL7xx series are generally interchangeable:
- VL750, VL751 (4-port)
- VL752 is NOT interchangeable (7-port)
USB 3.0 Hub Upgrade Path
Newer generations can replace older:
- VL817 can replace VL815, VL813, VL812
- VL815 can replace VL813, VL812
- VL813 can replace VL812
USB 3.2 Hub Upgrade Path
Newer generations can replace older:
- VL823 can replace VL822, VL820
- VL822 can replace VL820
Cross-Version Compatibility
NOT compatible across USB versions:
- VL7xx (USB 2.0) NOT compatible with VL8xx (USB 3.0)
- VL8xx (USB 3.0) NOT compatible with VL82x (USB 3.2)
- Different USB versions have different electrical requirements
Port Count Reference
| Series | Downstream Ports | |--------|------------------| | VL750 | 4 | | VL751 | 4 | | VL752 | 7 | | VL812-VL817 | 4 | | VL820-VL823 | 4 |
Common Applications
| Product Type | Typical Series | |--------------|----------------| | Basic USB 2.0 hub | VL750, VL751 | | 7-port USB 2.0 hub | VL752 | | USB 3.0 hub | VL817 (current), VL815 | | USB 3.2 hub | VL823 (current), VL822 | | USB-C PD controller | VL100, VL102, VL103 |
Related Files
- Handler:
manufacturers/ViaLabsHandler.java - Component types:
ComponentType.IC
Learnings & Edge Cases
- VL prefix for all parts: Unlike VIA Technologies (VT prefix), VIA Labs uses VL prefix
- 3-digit numbering scheme: 7xx = USB 2.0, 8xx = USB 3.0, 82x = USB 3.2, 10x = PD
- Generation within series: Higher second digit = newer generation (812 < 813 < 815 < 817)
- USB 3.2 overlaps with 8xx: VL82x is technically VL8xx but specifically USB 3.2
- 4-port is standard: Most VIA Labs hubs are 4-port; VL752 is exception with 7 ports
- Package suffix format varies: Can be hyphenated (VL817-Q7) or appended (VL817Q)
Related Skills
Cantara/task-delegation
data-ai
VerifiedTrustedCommunity
Cost-effective task delegation strategy using Haiku model for straightforward work. Use when planning how to approach simple, pattern-following tasks to minimize costs.
2SKILL.mdUpdated Apr 16, 2026
Cantara/similarity
tools
VerifiedTrustedCommunity
Use when working with component similarity calculations - comparing MPNs, finding equivalent parts, implementing new similarity calculators, or understanding how component matching works.
2SKILL.mdUpdated Apr 16, 2026
Cantara/similarity-transistor
testing
VerifiedTrustedCommunity
Use when working with transistor similarity calculations - comparing BJT MPNs, understanding NPN/PNP polarity matching, equivalent groups like 2N2222/PN2222, or transistor-specific similarity logic.
2SKILL.mdUpdated Apr 16, 2026
Cantara/similarity-sensor
testing
VerifiedTrustedCommunity
Use when working with sensor similarity calculations - comparing temperature/accelerometer/humidity sensor MPNs, understanding sensor families, equivalent parts, or sensor-specific similarity logic.
2SKILL.mdUpdated Apr 16, 2026