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

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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

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Size Codes

DSX Series (SMD Crystals)

Size Code	Dimensions	Common Frequencies
211	2.0x1.2mm	16-50 MHz
221	2.0x1.2mm	16-50 MHz
321	3.2x1.3mm	8-50 MHz
320	3.2x2.0mm	8-40 MHz
530	5.0x3.2mm	4-50 MHz
531	5.0x3.2mm	4-50 MHz
750	7.0x5.0mm	1-40 MHz
840	8.0x4.5mm	1-25 MHz
860	8.6x3.7mm	1-25 MHz

DST Series (Tuning Fork)

Size Code	Dimensions	Typical Frequency
210	2.0x1.2mm	32.768 kHz
310	3.1x1.5mm	32.768 kHz
410	4.1x1.5mm	32.768 kHz
520	5.0x2.0mm	32.768 kHz

DSO Series (Oscillators)

Size Code	Dimensions	Output Type
211	2.0x1.6mm	CMOS
221	2.0x1.6mm	CMOS
321	3.2x2.5mm	CMOS
531	5.0x3.2mm	CMOS
750	7.0x5.0mm	CMOS/LVDS

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Package Suffix Codes

Suffix	Meaning	Notes
G	SMD ceramic	Standard ceramic package
GA	SMD ceramic AEC-Q200	Automotive qualified
S	SMD	General SMD
SR	SMD tape reel	Tape and reel packaging
R	Tape reel	Tape and reel (any package)
SDH	SMD high stability	Enhanced frequency stability
SDA	SMD automotive	AEC-Q200 qualified

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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

Original	Replacement	Notes
DSX321G	DSX321GA	AEC-Q200 upgrade
DSO321S	DSO321SDH	High stability upgrade
DSX530G	DSX530GA	Automotive upgrade

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Common Part Numbers

DSX SMD Crystals

Part Number	Size	Frequency	Grade
DSX321G	3.2x1.3mm	Various	Standard
DSX321GA	3.2x1.3mm	Various	AEC-Q200
DSX530G	5.0x3.2mm	Various	Standard
DSX530GA	5.0x3.2mm	Various	AEC-Q200
DSX840GA	8.0x4.5mm	Low freq	AEC-Q200

DST Tuning Fork Crystals

Part Number	Size	Frequency	Notes
DST310S	3.1x1.5mm	32.768 kHz	Standard
DST410S	4.1x1.5mm	32.768 kHz	Standard
DST520S	5.0x2.0mm	32.768 kHz	Large

DSO Clock Oscillators

Part Number	Size	Output	Notes
DSO321SR	3.2x2.5mm	CMOS	Tape/reel
DSO531SDH	5.0x3.2mm	CMOS	High stability
DSO750S	7.0x5.0mm	CMOS	Large

1N Through-Hole Crystals

Part Number	Frequency	Package
1N-8.000	8 MHz	HC-49U
1N-12.000	12 MHz	HC-49U
1N-16.000	16 MHz	HC-49U
1N-26.000	26 MHz	HC-49U

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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 "";
}

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Related Files

• Handler:

  manufacturers/KDSHandler.java

• Component types:

  CRYSTAL

  ,

  OSCILLATOR

  ,

  IC

  (for SAW filters)
• No manufacturer-specific types defined

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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)

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