name: kds description: KDS (Daishinku Corporation) MPN encoding patterns, crystal and oscillator decoding, and handler guidance. Use when working with KDS timing devices (DSX, DST, DSO, DSB series).

KDS (Daishinku Corporation) Manufacturer Skill

Overview

KDS (Daishinku Corporation) is a major Japanese manufacturer of frequency control products:

• DSX series: SMD crystals
• DST series: Tuning fork crystals (32.768kHz typical)
• DSO series: Clock oscillators
• DSB series: SAW filters and resonators
• 1N series: Through-hole crystal units
• DX/SM series: Standard and surface mount crystals

MPN Structure

DSX Series (SMD Crystals)

DSX[SIZE][PACKAGE][OPTIONS]-[FREQUENCY]
|    |      |        |          |
|    |      |        |          +-- Optional frequency suffix
|    |      |        +-- GA = AEC-Q200, G = standard ceramic
|    |      +-- Package suffix
|    +-- 3-digit size code (321 = 3.2x1.3mm)
+-- DSX = SMD crystal series

Example: DSX321G-12.000M
         |  | ||    |
         |  | ||    +-- 12 MHz frequency
         |  | |+-- (SMD ceramic)
         |  | +-- G = SMD ceramic package
         |  +-- 321 = 3.2x1.3mm
         +-- DSX = SMD crystal

Example: DSX530GA
         |  |  ||
         |  |  |+-- A = AEC-Q200 automotive grade
         |  |  +-- G = SMD ceramic
         |  +-- 530 = 5.0x3.2mm
         +-- DSX = SMD crystal

DST Series (Tuning Fork Crystals)

DST[SIZE][PACKAGE]
|    |      |
|    |      +-- S = SMD, other variants
|    +-- 3-digit size code (310 = 3.1x1.5mm)
+-- DST = Tuning fork crystal series

Example: DST310S
         |  | |
         |  | +-- S = SMD package
         |  +-- 310 = 3.1x1.5mm
         +-- DST = Tuning fork (32.768kHz typical)

DSO Series (Clock Oscillators)

DSO[SIZE][PACKAGE][OPTIONS]
|    |      |        |
|    |      |        +-- SDH = high stability, R = tape reel
|    |      +-- S = SMD
|    +-- 3-digit size code
+-- DSO = Clock oscillator series

Example: DSO321SR
         |  | ||
         |  | |+-- R = Tape and reel
         |  | +-- S = SMD package
         |  +-- 321 = 3.2x2.5mm
         +-- DSO = Clock oscillator

DSB Series (SAW Filters/Resonators)

DSB[SIZE][PACKAGE][OPTIONS]
|    |      |        |
|    |      |        +-- SDA = automotive, other options
|    |      +-- S = SMD
|    +-- 3-digit size code
+-- DSB = SAW filter/resonator

Example: DSB321SDA
         |  |  ||
         |  |  |+-- A = AEC-Q200 automotive
         |  |  +-- SD = SMD automotive
         |  +-- 321 = 3.2x1.3mm
         +-- DSB = SAW device

1N Series (Through-Hole Crystals)

1N-[FREQUENCY]
|      |
|      +-- Frequency in MHz (26.000 = 26 MHz)
+-- 1N = Through-hole crystal unit

Example: 1N-26.000
         |    |
         |    +-- 26.000 MHz
         +-- 1N series, HC-49U package

Size Codes

DSX Series (SMD Crystals)

DST Series (Tuning Fork)

DSO Series (Oscillators)

Package Suffix Codes

Replacement Compatibility

KDS parts are compatible when:

1. Same base series (DSX vs DSX, DST vs DST)
2. Same package dimensions (321 matches 321)
3. Same or higher grade (AEC-Q200 can replace standard)

Upgrade Paths

Common Part Numbers

DSX SMD Crystals

DST Tuning Fork Crystals

DSO Clock Oscillators

1N Through-Hole Crystals

Handler Implementation Notes

Pattern Matching

// DSX series - SMD crystals
"^DSX[0-9].*"
"^DSX[0-9]{3}G.*"  // With package suffix

// DST series - Tuning fork
"^DST[0-9].*"

// DSO series - Oscillators
"^DSO[0-9].*"
"^DSO[0-9]{3}S.*"  // SMD variant

// DSB series - SAW devices
"^DSB[0-9].*"

// 1N series - Through-hole
"^1N-[0-9].*"
"^1N[0-9].*"

Package Code Extraction

String extractPackageCode(String mpn) {
    String upperMpn = mpn.toUpperCase();

    // DSX series: DSX321G -> 3.2x1.3mm
    if (upperMpn.startsWith("DSX")) {
        String sizeCode = upperMpn.substring(3, 6);  // e.g., "321"
        String packageSuffix = "";
        int idx = 6;
        while (idx < upperMpn.length() && Character.isLetter(upperMpn.charAt(idx))) {
            idx++;
        }
        packageSuffix = upperMpn.substring(6, idx);  // e.g., "G", "GA"
        return mapSizeCodeToPackage(sizeCode, packageSuffix);
    }

    // 1N series: always HC-49U
    if (upperMpn.startsWith("1N")) {
        return "HC-49U";
    }

    return "";
}

Frequency Extraction

String extractFrequencyCode(String mpn) {
    String upperMpn = mpn.toUpperCase();

    // 1N series: 1N-26.000 -> 26.000
    if (upperMpn.startsWith("1N-")) {
        return upperMpn.substring(3);  // Everything after "1N-"
    }

    // DSX/DST/DSO: look for frequency suffix after last dash
    int lastDash = upperMpn.lastIndexOf('-');
    if (lastDash >= 0 && lastDash < upperMpn.length() - 1) {
        String freqPart = upperMpn.substring(lastDash + 1);
        if (freqPart.matches(".*\\d.*")) {
            return freqPart;
        }
    }

    return "";
}

Related Files

• Handler: manufacturers/KDSHandler.java
• Component types: CRYSTAL, OSCILLATOR, IC (for SAW filters)
• No manufacturer-specific types defined

Learnings & Edge Cases

• DST always 32.768kHz: The DST (tuning fork) series is almost exclusively for 32.768 kHz RTC crystals
• 1N frequency in MPN: The 1N series explicitly includes frequency in the part number (1N-26.000)
• GA vs G: GA suffix indicates AEC-Q200 automotive qualification, can replace G but not vice versa
• SDH high stability: DSO oscillators with SDH suffix have enhanced frequency stability, suitable for precision applications
• SAW devices (DSB): Registered under IC type as they perform signal filtering, not simple oscillation
• Size code interpretation: First 2 digits = length in 0.1mm, third digit = width in 0.1mm (e.g., 321 = 3.2x1.3mm, but varies by series)