OpenSkillIndex← back to search
claude-code

Lib-electronic-components alphaomega

Alpha and Omega Semiconductor (AOS) Handler Skill

install
source · Clone the upstream repo
git clone https://github.com/Cantara/lib-electronic-components
Claude Code · Install into ~/.claude/skills/
T=$(mktemp -d) && git clone --depth=1 https://github.com/Cantara/lib-electronic-components "$T" && mkdir -p ~/.claude/skills && cp -r "$T/.claude/skills/manufacturers/alphaomega" ~/.claude/skills/cantara-lib-electronic-components-alphaomega && rm -rf "$T"
manifest: .claude/skills/manufacturers/alphaomega/SKILL.md
source content

Alpha and Omega Semiconductor (AOS) Handler Skill

Use this skill when working with Alpha and Omega Semiconductor (AOS) components - primarily MOSFETs.

Company Overview

Alpha and Omega Semiconductor (AOSMD) specializes in power semiconductors, particularly MOSFETs. They are known for:

  • High-performance power MOSFETs for computing, consumer, industrial, and automotive applications
  • Innovative packaging technologies (TOLL, GTPAK, GLPAK)
  • Shield Gate Technology (SGT) for low Rds(on)
  • Both N-channel and P-channel devices

MPN Structure

AOS part numbers follow this pattern:

AO[Package Prefix][Series Number][Variant Letter]

Package Prefixes

PrefixPackage TypeDescription
AO3xxx
SOT-23Small outline transistor, 3-pin
AO4xxx
SO-8Small outline, 8-pin
AOD
TO-252 (DPAK)Decawatt package
AON
DFNDual flat no-lead (various sizes)
AOI
TO-251 (IPAK)I-pak package
AOT
TO-220Through-hole power package
AOB
TO-263 (D2PAK)Double DPAK
AOC
SO-8Common drain dual MOSFETs
AOP
PDFNPower DFN
AOTL
TOLLTO-Leadless (30% smaller than D2PAK)
AOGT
GTPAKTopside cooling package
AOGL
GLPAKGull-wing TOLL
AONS
DFNDFN source-down
AONR
DFNDFN source-down
AONK
DFN3.3x3.3Compact DFN source-down

Variant Letters

  • A
    - Revision or improved version
  • L
    - Low Rds(on) variant

Examples

MPNPackageTypeNotes
AO3401A
SOT-23P-channel30V, 4A
AO3400A
SOT-23N-channel30V, 5.7A
AO4407A
SO-8P-channel30V, 12A
AO4988
SO-8N-channel40V, 10A
AOD4184
TO-252N-channel40V, 50A
AON6758
DFN 5x6N-channel30V, 85A
AOT240L
TO-220N-channel40V, 79A
AOGT66909
GTPAKN-channelTopside cooling

Handler Implementation

File Location

src/main/java/no/cantara/electronic/component/lib/manufacturers/AlphaOmegaHandler.java

Supported Component Types

  • MOSFET

Key Methods

matches(String mpn, ComponentType type, PatternRegistry patterns)

Checks if MPN matches AOS MOSFET patterns.

extractPackageCode(String mpn)

Returns package type based on prefix:

  • AO3xxx
    -> 
    SOT-23
  • AO4xxx
    -> 
    SO-8
  • AOD
    -> 
    TO-252
  • AON
    -> 
    DFN
  • etc.

extractSeries(String mpn)

Returns base series without variant letters:

  • AO3401A
    -> 
    AO3401
  • AOD4184A
    -> 
    AOD4184

Test Coverage

Test File Location

src/test/java/no/cantara/electronic/component/lib/handlers/AlphaOmegaHandlerTest.java

Test Categories

  • SOT-23 Package MOSFETs (AO3xxx)
  • SO-8 Package MOSFETs (AO4xxx)
  • TO-252/DPAK Package MOSFETs (AOD)
  • DFN Package MOSFETs (AON)
  • TO-251/IPAK Package MOSFETs (AOI)
  • TO-220 Package MOSFETs (AOT)
  • TO-263/D2PAK Package MOSFETs (AOB)
  • Advanced Packages (AOTL, AOGT, AOGL, AONS, AONR, AONK)
  • Common Drain Dual MOSFETs (AOC)
  • PDFN Package MOSFETs (AOP)
  • Package Code Extraction
  • Series Extraction
  • Edge Cases
  • Manufacturer Detection

Common Tasks

Adding New Package Types

  1. Add pattern to 
    initializePatterns()
  2. Add explicit check in 
    matches()
  3. Add package mapping in 
    extractPackageCode()
  4. Add series extraction logic in 
    extractSeries()
  5. Add tests for new patterns

Run Tests

mvn test -Dtest=AlphaOmegaHandlerTest

Learnings & Quirks

Package Encoding

  • Position 3-4 after "AO" indicates package type for basic series
  • Extended prefixes (AOTL, AOGT, etc.) are 4 characters
  • Series numbers typically 3-5 digits

N-channel vs P-channel

  • Part number doesn't directly encode polarity
  • Must reference datasheet or use external lookup
  • Even numbers often N-channel, odd numbers often P-channel (not a strict rule)

Variant Letters

  • A
    suffix common for improved versions
  • L
    suffix for low Rds(on) variants
  • No suffix for original versions

References

Last Updated: January 2026