[PREFIX][SERIES][VARIANT][PACKAGE][TEMP][QUALIFIER]
   │       │        │        │      │       │
   │       │        │        │      │       └── Optional: R=Tape/Reel, E=Lead-free
   │       │        │        │      └── Temperature: I=Industrial, Q=Automotive, M=Military
   │       │        │        └── Package code (see table below)
   │       │        └── Variant letter (A, B, C for improved specs)
   │       └── Series number (e.g., 358, 7805, 317)
   └── Family prefix (LM, TL, TPS, SN, etc.)

LM358DR
│  │  ││
│  │  │└── R = Tape and Reel
│  │  └── D = SOIC package
│  └── 358 = Dual Op-Amp series
└── LM = Linear/Mixed-signal prefix

TPS63020DSJR
│  │    │  │
│  │    │  └── R = Tape and Reel
│  │    └── DSJ = SON package (3x3mm)
│  └── 63020 = Buck-Boost converter
└── TPS = Power Supply prefix

LM35DZ   → Temperature sensor (D = grade, Z = TO-92 package)
LM358N   → Dual op-amp (8 = part of series, N = DIP package)

// LM35 sensors: letter A-D immediately after "35"
"^LM35[A-D][A-Z0-9-]*$"

// LM358 op-amps: digit after "35"
"^LM358[A-Z0-9]*(?:N|D|P|DG|PW)?$"

LM7805CT  → +5V regulator, TO-220
LM7905CT  → -5V regulator, TO-220

// TI package codes come AFTER the base part number
// Example: LM358D → base="LM358", package="D"

// For voltage regulators, package often follows voltage
// Example: LM7805CT → base="LM7805", package="CT" (TO-220)

// CRITICAL: Check longer suffixes BEFORE shorter ones!
// "LM7805DT".endsWith("T") is TRUE, but DT=SOT-223, not TO-220
if (suffix.endsWith("CT")) return "TO-220";   // 2-char first
if (suffix.endsWith("DT")) return "SOT-223";  // 2-char first
if (suffix.endsWith("MP")) return "SOT-223";  // 2-char first
if (suffix.endsWith("KC")) return "TO-252";   // 2-char first
if (suffix.endsWith("T")) return "TO-220";    // 1-char LAST

// Same for SOIC vs MSOP vs TSSOP
if (suffix.startsWith("DGK")) return "MSOP";  // 3-char first
if (suffix.startsWith("PW")) return "TSSOP";  // 2-char
if (suffix.startsWith("D")) return "SOIC";    // 1-char LAST

// WRONG - "DT" ends with "T" so this returns TO-220 incorrectly
if (upperMpn.endsWith("T")) return "TO-220";   // Matches first!
if (upperMpn.endsWith("DT")) return "SOT-223"; // Never reached

// CORRECT - Check longer suffixes first
if (upperMpn.endsWith("DT")) return "SOT-223"; // Matches correctly
if (upperMpn.endsWith("T")) return "TO-220";   // Only bare "T"

// Extract base series before package/temperature suffix
// LM358APWRQ1 → LM358 (ignore A=variant, PW=package, R=tape, Q1=automotive)

// Voltage regulators include voltage in series
// LM7805 → full series is "LM7805" not just "LM78"