txc

# 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 ``` --- ## 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 | --- ## 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) | --- ## 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. --- ## 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 | --- ## 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) ``` --- ## 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 | --- ## Handler Implementation Notes ### Series Code Extraction ```java // 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 ```java // 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 ```java // 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 ""; } ``` --- ## Related Files - Handler: `manufacturers/TXCHandler.java` - Component types: `CRYSTAL`, `OSCILLATOR` - No manufacturer-specific types defined --- ## 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 <!-- Add new learnings above this line -->