TXC Corporation Manufacturer Skill

MPN Structure

TXC MPNs follow this general structure:

[SERIES]-[FREQUENCY][SUFFIX]
   |         |         |
   |         |         +-- Temperature grade + packaging (e.g., MAAJ-T)
   |         +-- Frequency value (e.g., 12.000M = 12 MHz)
   +-- 2-character series code (7M, 8Y, 9C, 7V, 7X, AX)

Example Decoding

7M-12.000MAAJ-T
|    |    || |
|    |    || +-- T = Tape and Reel packaging
|    |    |+-- J = Package variant
|    |    +-- A = Commercial temperature (-20 to +70C)
|    +-- 12.000M = 12 MHz frequency
+-- 7M = Standard crystal series

8Y-16.000MAAE-T
|    |    ||
|    |    |+-- E = Extended temperature (-40 to +85C)
|    |    +-- A = Tolerance code
|    +-- 16.000M = 16 MHz
+-- 8Y = SMD crystal series

9C-25.000MBD-T
|    |    |
|    |    +-- BD = Clock oscillator suffix
|    +-- 25.000M = 25 MHz
+-- 9C = Clock oscillator series

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Series Codes

Crystal Series

Series	Product Type	Package	Notes
7M	Standard crystals	HC49	Through-hole, general purpose
8Y	SMD crystals	3.2x2.5mm	Surface mount, common size
AX	Automotive crystals	SMD	AEC-Q200 qualified

Oscillator Series

Series	Product Type	Package	Notes
9C	Clock oscillators	SMD	Standard clock output
7V	VCXO	SMD	Voltage Controlled Crystal Oscillator
7X	TCXO	SMD	Temperature Compensated Crystal Oscillator

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Frequency Encoding

Frequency is encoded after the series prefix with a hyphen separator:

Format	Example	Meaning
XX.XXXM	12.000M	12.000 MHz
XX.XXXK	32.768K	32.768 kHz
XXXM	25M	25 MHz (simplified)

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Temperature Grades

Code	Range	Application
A	-20 to +70C	Commercial
E	-40 to +85C	Extended/Industrial
I	-40 to +85C	Industrial (alternate)
M	-55 to +125C	Military (rarely used)

Temperature grade is typically the second character in the options suffix after the frequency.

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Package Codes

TXC uses the series prefix to indicate general package type, with additional suffix encoding:

By Series

Series	Default Package	Dimensions
7M	HC49	Through-hole
8Y	SMD ceramic	3.2x2.5mm
9C	SMD oscillator	Various
7V	SMD VCXO	5.0x3.2mm typical
7X	SMD TCXO	3.2x2.5mm typical
AX	Automotive SMD	Various

Suffix Codes

Suffix	Meaning
-T	Tape and Reel
-TR	Tape and Reel (alternate)
G	Gold finish
J	Standard package variant

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Replacement Compatibility

TXC parts are compatible when:

1. Same series (7M vs 7M, 8Y vs 8Y)
2. Same frequency (12.000M matches 12.000M)
3. Compatible temperature (Extended can replace Commercial, not vice versa)

Temperature Grade Upgrade Path

Commercial (A) can be upgraded to Extended (E)
Extended (E) CANNOT be downgraded to Commercial (A)

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Common Part Numbers

Standard Crystals (7M)

Part Number	Frequency	Package	Notes
7M-12.000MAAJ-T	12 MHz	HC49	Commercial, tape/reel
7M-16.000MAAJ-T	16 MHz	HC49	Commercial, tape/reel
7M-8.000MAAJ-T	8 MHz	HC49	Commercial, tape/reel

SMD Crystals (8Y)

Part Number	Frequency	Package	Notes
8Y-12.000MAAE-T	12 MHz	3.2x2.5mm	Extended temp
8Y-16.000MAAE-T	16 MHz	3.2x2.5mm	Extended temp
8Y-25.000MAAJ-T	25 MHz	3.2x2.5mm	Commercial

Clock Oscillators (9C)

Part Number	Frequency	Output	Notes
9C-12.000MBD-T	12 MHz	CMOS	Standard output
9C-25.000MBD-T	25 MHz	CMOS	Standard output
9C-50.000MBD-T	50 MHz	CMOS	High frequency

VCXO (7V)

Part Number	Frequency	Notes
7V-12.000MBA-T	12 MHz	Voltage controlled
7V-25.000MBA-T	25 MHz	Voltage controlled

TCXO (7X)

Part Number	Frequency	Stability	Notes
7X-16.000MBA-T	16 MHz	+/-2.5ppm	Temperature compensated
7X-26.000MBA-T	26 MHz	+/-2.5ppm	Temperature compensated

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Handler Implementation Notes

Series Code Extraction

// Series is first 2 characters
String extractSeriesCode(String mpn) {
    if (mpn == null || mpn.length() < 2) return "";
    String prefix = mpn.substring(0, 2).toUpperCase();
    return switch (prefix) {
        case "7M", "8Y", "9C", "7V", "7X", "AX" -> prefix;
        default -> "";
    };
}

Frequency Extraction

// Frequency is after first hyphen, ends with M or K
String extractFrequency(String mpn) {
    int dashIndex = mpn.indexOf('-');
    if (dashIndex < 0) return "";
    String afterDash = mpn.substring(dashIndex + 1);

    // Find end of frequency (M for MHz, K for kHz)
    for (int i = 0; i < afterDash.length(); i++) {
        char c = afterDash.charAt(i);
        if (c == 'M' || c == 'K') {
            return afterDash.substring(0, i + 1);
        }
    }
    return "";
}

Temperature Grade Detection

// Look for E (Extended) or A (Commercial) in options suffix
String extractTemperatureGrade(String mpn) {
    // Remove trailing -T if present
    String workMpn = mpn.endsWith("-T") ? mpn.substring(0, mpn.length() - 2) : mpn;

    // Find options suffix after frequency
    // E anywhere = Extended, A anywhere = Commercial
    String optionsSuffix = /* extract suffix after frequency */;
    if (optionsSuffix.contains("E")) return "Extended";
    if (optionsSuffix.contains("A")) return "Commercial";
    return "";
}

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Related Files

• Handler:

  manufacturers/TXCHandler.java

• Component types:

  CRYSTAL

  ,

  OSCILLATOR

• No manufacturer-specific types defined

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Learnings & Edge Cases

• Frequency format: Always includes decimal for precision (12.000M, not 12M)
• Temperature in suffix: The second character in options suffix typically indicates temperature grade
• Series determines package: Unlike other manufacturers, TXC uses series prefix to indicate package type
• VCXO/TCXO distinction: 7V = voltage controlled, 7X = temperature compensated (different applications)
• Automotive (AX): Requires AEC-Q200 qualification, typically extended temp range

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