CX-[SIZE][OPTIONS][FREQUENCY]
|    |      |        |
|    |      |        +-- Frequency (if specified separately)
|    |      +-- Package and tolerance options
|    +-- Size code (32 = 3.2x1.5mm, 49 = 4.5x2.0mm)
+-- Series prefix

Example: CX-3215GA
         |  |  ||
         |  |  |+-- A = Tolerance grade
         |  |  +-- G = SMD ceramic package
         |  +-- 3215 = 3.2x1.5mm dimensions
         +-- CX = Ceramic resonator series

KC[SIZE][VARIANT]-[OPTIONS]
|   |       |        |
|   |       |        +-- Additional options/frequency
|   |       +-- Variant letter (D, B, etc.)
|   +-- 4-digit size code (1612 = 1.6x1.2mm)
+-- Series prefix

Example: KC1612D-C3
         |  |  | ||
         |  |  | |+-- Variant 3
         |  |  | +-- C = Option code
         |  |  +-- D = Differential output
         |  +-- 1612 = 1.6x1.2mm
         +-- KC = Crystal oscillator series

CT[SIZE][VALUE][VOLTAGE][DIELECTRIC]
|   |      |       |         |
|   |      |       |         +-- Dielectric type (X7R, X5R, etc.)
|   |      |       +-- Voltage rating
|   |      +-- Capacitance value
|   +-- Size code (31 = 0603, 41 = 0805)
+-- Series prefix

[SERIES]-[PINCOUNT]-[VARIANT]
   |         |          |
   |         |          +-- Mounting/option variant
   |         +-- Pin count or configuration
   +-- Series number (5600, 5800, etc.)

Example: 5600-050-141
         |    |   |
         |    |   +-- Variant code
         |    +-- 050 = 50 pins (if applicable)
         +-- 5600 = Series

// Ceramic resonators - multiple series
Pattern CX_PATTERN = Pattern.compile("^CX[-]?[0-9]{2,4}[A-Z]*.*", Pattern.CASE_INSENSITIVE);
Pattern CSTS_PATTERN = Pattern.compile("^CSTS[A-Z]*[-]?[0-9]+.*", Pattern.CASE_INSENSITIVE);

// Crystal oscillators
Pattern KC_PATTERN = Pattern.compile("^KC[0-9]{4}[A-Z]*[-]?.*", Pattern.CASE_INSENSITIVE);

// Connectors
Pattern CONNECTOR_PATTERN = Pattern.compile("^5[6-9][0-9]{2}[-]?[0-9]+.*", Pattern.CASE_INSENSITIVE);

// CX resonator: size code is positions 2-3 (or 2-4 after normalizing)
String extractResonatorPackage(String mpn) {
    String normalized = mpn.toUpperCase().replace("-", "");
    if (normalized.length() >= 4) {
        String sizeCode = normalized.substring(2, 4);
        return mapResonatorPackage(sizeCode);
    }
    return "";
}

// KC oscillator: size code is 4 digits after KC
String extractOscillatorPackage(String mpn) {
    String normalized = mpn.toUpperCase().replace("-", "");
    if (normalized.length() >= 6) {
        String sizeCode = normalized.substring(2, 6);
        return mapOscillatorPackage(sizeCode);
    }
    return "";
}

// Frequency may be embedded in MPN or in separate suffix
String extractFrequency(String mpn) {
    String upperMpn = mpn.toUpperCase();
    int lastDash = upperMpn.lastIndexOf('-');
    if (lastDash >= 0 && lastDash < upperMpn.length() - 1) {
        String suffix = upperMpn.substring(lastDash + 1);
        if (suffix.matches(".*[0-9]+.*[MK].*") || suffix.matches(".*[0-9]+.*HZ.*")) {
            return suffix;
        }
    }
    return "";
}