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At Fox we are always trying to innovate, improve, and evolve. This will sometimes result in changes to current products. Below is a list of existing PCNs or use the PCN search to look up a particular product.
| PCN # | Date Posted | Type of Change | Products Affected | View PCN |
|---|---|---|---|---|
| 101531 | 4/8/2019 | Product End of Life (EOL) | KFSM (former FSMLF) | https://foxonline.com/pdfs/PCN101531.pdf |
| 101536 | 4/8/2019 | Product Change Notification | Standard Part Number Change | https://foxonline.com/pdfs/PCN101536.pdf |
| 101423 | 1/23/2019 | Product Change Notification | C6BS (FMB) - Carrier Tape Change | https://www.foxonline.com/pdfs/PCN101423.pdf |
| 101439 | 1/18/2019 | Product End of Life (EOL) | C4UT (HC49ULF) See PCN for specific part numbers | https://www.foxonline.com/pdfs/PCN101439.pdf |
| 101336 | 09/26/2018 | Product Change Notification | O1HS (former F130, F140, F110 Series), O1HA (former FA130 Series) - Dimensional Tolerance Change | https://www.foxonline.com/pdfs/PCN101336.pdf |
| 101308 | 08/23/2018 | Product Change Notification | C3BQ (former FQ3225B), C5BQ (former FQ5032B), C5AQ (former FQ5032A), C8AQ (former FQ1045A) | https://www.foxonline.com/pdfs/PCN101308.pdf |
| 1055-1 | 07/02/2018 | Product Change Notification | F32K | https://www.foxonline.com/pdfs/PCN1055-1.pdf |
| 539 | 06/01/2018 | Product End of Life (EOL) | C4UT (former HC49ULF) | https://www.foxonline.com/pdfs/PCN539.pdf |
| 1001-1 | 04/20/2018 | Product End of Life (EOL) | C6AQ (former FQ6035A), C6BQ (former FQ6035B), C7AQ (former FQ7050A), C7BQ (former FQ7050B) | https://www.foxonline.com/pdfs/PCN1001-1.pdf |
| 535 | 10/13/2017 | Product Change Notification | C3BQ (former FQ3225B), C5AQ (former FQ5032A), C5BQ (former FQ5032B), C6AQ (former FQ6035A), C6BQ (former FQ6035B), C7AQ (former FQ7050A), C7BQ (former FQ7050B), C8AQ (former FQ1045A) | https://www.foxonline.com/pdfs/PCN535.pdf |
| 533 | 09/13/2017 | Product Change Notification | C4BS (former FX425B) | https://www.foxonline.com/pdfs/PCN533.pdf |
| 531 | 09/06/2017 | Product End of Life (EOL) | C4UT (former HC49ULF) All frequencies under 3.579545 MHz | https://www.foxonline.com/pdfs/PCN531.pdf |
| 529 | 08/01/2017 | Product Change Notification | O7PS Series (Former F4600, F4620 Series) O7LS (Former F4700, F4710 Series) | https://www.foxonline.com/pdfs/PCN529.pdf |
| 526 | 04/06/2017 | Product Change Notification | C5BS (former FX532B) | https://www.foxonline.com/pdfs/PCN526.pdf |
| 523 | 03/20/2017 | Product Change Notification | K161 (former FX161) | https://www.foxonline.com/pdfs/PCN523.pdf |
| 522 | 02/16/2017 | Product Change Notification | O7HSC (former F4100 series) | https://www.foxonline.com/pdfs/PCN522.pdf |
| 520 | 01/17/2017 | Product End of Life (EOL) | FX-3 | https://www.foxonline.com/pdfs/PCN520.pdf |
| 518 | 12/13/2016 | Product Change Notification | All FTS Series Sine Wave OCXO | https://www.foxonline.com/pdfs/PCN518.pdf |
| 504 | 11/11/2016 | Product Change Notification | Fox331, Fox321, Fox333, Fox332 | https://www.foxonline.com/pdfs/PCN504.pdf |
| 507 | 06/16/2016 | Product Change Notification | 2x1.6mm to 10x4.5mm Crystals | https://www.foxonline.com/pdfs/PCN507.pdf |
| 491 | 05/16/2016 | Product Change Notification | All FAxxx series automotive grade XOs | https://www.foxonline.com/pdfs/PCN491.pdf |
| 471 | 05/12/2016 | Product Change Notification | 3.3V SMD Stratum III TCXO/VCTCXO | https://www.foxonline.com/pdfs/PCN471.pdf |
| 499 | 04/25/2016 | Product End of Life (EOL) | All FOX923_6 TCXO/VCTCXO Versions | https://www.foxonline.com/pdfs/PCN499.pdf |
| 497 | 04/25/2016 | Product End of Life (EOL) | All FCL, FCP Oscillators | https://www.foxonline.com/pdfs/PCN497.pdf |
| 495 | 04/25/2016 | Product Change Notification | All Fox Products | https://www.foxonline.com/pdfs/PCN495.pdf |
| 494 | 04/25/2016 | Product Change Notification | FSXLF | https://www.foxonline.com/pdfs/PCN494.pdf |
| 488 | 04/25/2016 | Product Change Notification | FXA2016B, FX216C, FXA242BS... | https://www.foxonline.com/pdfs/PCN488.pdf |
| 487 | 12/15/2015 | Product End of Life (EOL) | Ceramic Resonators | https://www.foxonline.com/pdfs/PCN487.pdf |
| 484 | 11/25/2015 | Product End of Life (EOL) | HC49SPXLF | https://www.foxonline.com/pdfs/PCN484.pdf |
| 470 | 08/03/2015 | Product End of Life (EOL) | Mylar spacer for HC49ULF & HC49SLF | https://www.foxonline.com/pdfs/PCN470.pdf |
| 466 | 06/23/2015 | Product End of Life (EOL) | FPXLF | https://www.foxonline.com/pdfs/PCN466.pdf |
| 465 | 06/15/2015 | Product Change Notification | HC49SLF, HC49SSLF, HC49ULF | https://www.foxonline.com/pdfs/PCN465.pdf |
| 460 | 03/30/2015 | Specification Change | HC49SLF, HC49SDLF | https://www.foxonline.com/pdfs/PCN460.pdf |
| 459 | 03/24/2015 | Packaging Specification Change | FX135, FX135L | https://www.foxonline.com/pdfs/PCN459.pdf |
| 452 | 09/24/2014 | Product End of Life (EOL) | FXTC | https://www.foxonline.com/pdfs/PCN452.pdf |
| 430 | 02/21/2014 | Product Change Notification | FD | https://www.foxonline.com/pdfs/PCN430.pdf |
| 429 | 01/29/2014 | Product Change Notification | F3345/F3355 Series | https://www.foxonline.com/pdfs/PCN429.pdf |
| 419 | 09/26/2013 | Product Change Notification | FOX923CH, FOX923CEH | https://www.foxonline.com/pdfs/PCN419.pdf |
| 415 | 08/12/2013 | Product Change Notification | FX216C | https://www.foxonline.com/pdfs/PCN415.pdf |
| 404 | 02/25/2013 | Product Change Notification | FOX251, FOX351, FOX551, FOX751 | https://www.foxonline.com/pdfs/PCN404.pdf |
| 399 | 11/27/2012 | Product Change Notification | Resin Seal SMD Crystals | https://www.foxonline.com/pdfs/PCN399.pdf |
| 396 | 09/27/2012 | Product End of Life (EOL) | FEG | https://www.foxonline.com/pdfs/PCN396.pdf |
| 390 | 09/27/2012 | Product Change Notification | FX216C | https://www.foxonline.com/pdfs/PCN390.pdf |
| 386 | 04/03/2012 | Product End of Life (EOL) | All Dip Oscillator (XO, VCXO, TCXO) | https://www.foxonline.com/pdfs/PCN386.pdf |
| 344 | 03/27/2012 | Product STD Reel QTY Change | XpressO 3.2x2.5mm Packages | https://www.foxonline.com/pdfs/PCN344.pdf |
| 385 | 01/13/2012 | Product Change Notification | NC38LF Series | https://www.foxonline.com/pdfs/PCN385.pdf |
| 380 | 01/10/2012 | Product Change Notification | F4600 Series | https://www.foxonline.com/pdfs/PCN380.pdf |
| 373 | 01/10/2012 | Product Change Notification | FQ1045A | https://www.foxonline.com/pdfs/PCN373.pdf |
| 377 | 10/24/2011 | Product Change Notification | F5C-2ELF, H5C-2ELF, F5C-2E3LF, H5C-2E3LF, F1100ELF | https://www.foxonline.com/pdfs/PCN377.pdf |
| 369 | 04/27/2011 | Product Change Notification | FQ3225B | https://www.foxonline.com/pdfs/PCN369.pdf |
| 361 | 09/03/2010 | Pin Connection Recommendation | FSRLF & FSXLF | https://www.foxonline.com/pdfs/PCN361.pdf |
| 360 | 08/11/2010 | Recommended Solder Pad Layout Change | NC26SMLF | https://www.foxonline.com/pdfs/PCN360.pdf |
| 349 | 05/28/2010 | Product Specification Changes | All Auto Grade Crystals | https://www.foxonline.com/pdfs/PCN349.pdf |
| 384 | 03/12/2010 | Product Change Notification | FSRLF | https://www.foxonline.com/pdfs/PCN384.pdf |
| 347 | 03/23/2010 | SMD Crystal Materials Changes | FQ3225B, FQ5032A & B, FQ1045A | https://www.foxonline.com/pdfs/PCN347.pdf |
| 346 | 03/23/2010 | SMD Crystal Specification Changes | FQ3225B & FQ1045A | https://www.foxonline.com/pdfs/PCN346.pdf |
| 345 | 04/13/2010 | Product Specification Changes | FOX923 & FOX923_GP | https://www.foxonline.com/pdfs/PCN345.pdf |
| 342 | 03/04/2010 | T/R Specification Changes | NC26SMLF | https://www.foxonline.com/pdfs/PCN342.pdf |
| 341 | 03/04/2010 | SMD Crystal Specification Changes | FD | https://www.foxonline.com/pdfs/PCN341.pdf |
| 340 | 03/04/2010 | 3.2x2.5mm package carrier tape color | All 3.2x2.5mm SMD products | https://www.foxonline.com/pdfs/PCN340.pdf |
| 339 | 03/04/2010 | Product End of Life (EOL) | FQAG | https://www.foxonline.com/pdfs/PCN339.pdf |
| 333 | 3/24/2009 | Product Tape and Reel Changes | FQ1045A | https://www.foxonline.com/pdfs/PCN333.pdf |
| 331 | 07/08/2009 | Product End of Life (EOL) | FSY | https://www.foxonline.com/pdfs/PCN331.pdf |
| 330 | 07/02/2009 | Product End of Life (EOL) | FOX307H | https://www.foxonline.com/pdfs/PCN330.pdf |
| 329 | 06/15/2009 | Product End of Life (EOL) | F254 | https://www.foxonline.com/pdfs/PCN329.pdf |
| 326 | 06/05/2009 | Product Frequency Range Changes | HC49SLF, HC49SDLF, HC49SSLF, HC49SSDLF | https://www.foxonline.com/pdfs/PCN326.pdf |
| 325 | 06/03/2009 | Product Dimensional Changes | NC15LF | https://www.foxonline.com/pdfs/PCN325.pdf |
| 324 | 05/07/2009 | Product Tape and Reel Specification Changes | 5x3.2mm HCMOS clock oscillators; F510, F520, F530L, F530LA, F540, F550L, F550H series 5x3.2 All Quartz crystals: FQ5032 series | https://www.foxonline.com/pdfs/PCN324.pdf |
| 323 | 03/24/2009 | Product Height Change | FOX923 Series | https://www.foxonline.com/pdfs/PCN323.pdf |
| 321 | 02/25/2009 | Product Process Change | FTE Series OCXOs | https://www.foxonline.com/pdfs/PCN321.pdf |
| 319 | 02/25/2009 | Product End of Life (EOL) | Non RoHS compliant FTS, FTE & FHS Series OCXOs | https://www.foxonline.com/pdfs/PCN319.pdf |
| 318 | 02/04/2009 | Product Specification Change | F4600 Series & F4620 Series | https://www.foxonline.com/pdfs/PCN318.pdf |
| 317 | 12/30/2008 | Marking Specifications on Fox Datasheets | All Fox Products | https://www.foxonline.com/pdfs/pcn317.pdf |
| 312 | 10/21/2008 | Product End of Life (EOL) | FOX783 | https://www.foxonline.com/pdfs/PCN312.pdf |
| 311 | 10/21/2008 | Product Recommended Solder Pad Layout Change | F310, F330, F340 Series | https://www.foxonline.com/pdfs/PCN311.pdf |
| 310 | 10/21/2008 | Product Process Change | FX252BS Series | https://www.foxonline.com/pdfs/PCN310.pdf |
| 304 | 07/15/2008 | Product End of Life (EOL) | HC49ULFW | https://www.foxonline.com/pdfs/PCN304.pdf |
| 302 | 06/09/2008 | Product End of Life (EOL) | FX532C Series | https://www.foxonline.com/pdfs/PCN302.pdf |
| 301 | 06/09/2008 | Product Specification Changes | FOX801LF & FOX801BHCLF Series | https://www.foxonline.com/pdfs/PCN301.pdf |
| 299 | 05/27/2008 | Product Frequency Range Change | F230 Series & F240 Series | https://www.foxonline.com/pdfs/PCN299.pdf |
| 298 | 04/28/2008 | Product Specification Changes | FOX331 | https://www.foxonline.com/pdfs/PCN298.pdf |
| 297 | 04/14/2008 | Product Process Change | FPC Series OCXOs | https://www.foxonline.com/pdfs/PCN297.pdf |
| 289 | 04/28/2008 | Product Process Change | FSXLF & FSRLF | https://www.foxonline.com/pdfs/PCN289.pdf |
| 288 | 11/20/2007 | Product Pin Documentation Changes | XpressO HCMOS Single Output XOs: 5x3.2mm and 7.5x5mm packages | https://www.foxonline.com/pdfs/PCN288.pdf |
| 287 | 02/25/2008 | Package Change | FX252B | https://www.foxonline.com/pdfs/PCN287.pdf |
| 286 | 02/25/2008 | Product Specification Changes | F254 | https://www.foxonline.com/pdfs/PCN286.pdf |
| 284 | 02/25/2008 | Product Process Change | FSXLF | https://www.foxonline.com/pdfs/PCN284.pdf |
| 283 | 10/22/2007 | Product Specification Changes | F254 | https://www.foxonline.com/pdfs/PCN283.pdf |
| 282 | 02/26/2008 | 7.5x5mm HCMOS 1.8V-2.85V Oscillators Optional Height Discontinuance | F4300, F4400, F4500 | https://www.foxonline.com/pdfs/PCN282.pdf |
| 280 | 10/22/2007 | Product Dimensional Changes | All Fox SMD products dimensional drawings | https://www.foxonline.com/pdfs/PCN280.pdf |
| 276 | 09/04/2007 | Product Dimensional Changes | All Quartz SMD Crystals: FQ5032 Series, FQ6035 Series, FQ7050 Series | https://www.foxonline.com/pdfs/PCN276.pdf |
| 281 | 08/28/2007 | Product End of Life (EOL) | Fox non RoHS compliant product families: HC49U, HC49S, HC49SS, HC49SD, HC49SSD, FPX, FSM, FSR, FSX, NC15, NC26 Series, NC38, All Monolithic Crystal Filters, F1100E Series, F5C-2E Series, H5C-2E Series, VCXO-B Series, VCXO-C Series, VCXO-D Series, VCXO-CH Series, VCXO-DH Series, F7250 Series, F7350 Series, FOX801 Series. | https://www.foxonline.com/pdfs/pcn281.pdf |
| 278 | 08/09/2007 | Oscillators Height Change | F4400 and F4500 series oscillators | https://www.foxonline.com/pdfs/PCN278.pdf |
| 275 | 07/26/2007 | Product Dimensional Changes | All 5x3.2mm Ceramic SMD 4 pad HCMOS Oscillators | https://www.foxonline.com/pdfs/PCN275.pdf |
| 274 | 07/26/2007 | End of Life | FSOLF Series | https://www.foxonline.com/pdfs/PCN274.pdf |
| 272 | 07/26/2007 | Product Specification Clarification | F330A Series | https://www.foxonline.com/pdfs/PCN272.pdf |
| 266 | 05/10/2007 | End of Life | FOX465 | https://www.foxonline.com/pdfs/PCN266.pdf |
| 269 | 05/08/2007 | End of Life | F5L All Versions | https://www.foxonline.com/pdfs/PCN269.pdf |
| 267 | 05/08/2007 | Product Specification Changes | FOX924 Series | https://www.foxonline.com/pdfs/PCN267.pdf |
| 261 | 02/15/2007 | End of Life | RFXO Series All Versions | https://www.foxonline.com/pdfs/PCN261.pdf |
| 259 | 02/07/2007 | Product Frequency Range Change | HC49SSLF, HC49SSDLF | https://www.foxonline.com/pdfs/PCN259.pdf |
| 260 | 01/26/2007 | Part Marking | FSRLF / FSMLF | https://www.foxonline.com/pdfs/PCN260.pdf |
| 258 | 01/09/2007 | Product Dimensional Changes | FQ1045A | https://www.foxonline.com/pdfs/PCN258.pdf |
| 252 | 12/05/2006 | End of Life | HC49SPX Series | https://www.foxonline.com/pdfs/PCN252.pdf |
| 257 | 12/04/2006 | Dimensional Changes | HC49SDLF Series | https://www.foxonline.com/pdfs/PCN257.pdf |
| 256 | 11/09/2006 | End of Life | JITO-2, JITO-T Product Line | https://www.foxonline.com/pdfs/PCN256.pdf |
| 220 | 05/24/2006 | Product Process Change | FSMLF, FSMALF, FSRLF | https://www.foxonline.com/pdfs/PCN220.pdf |
| 249 | 05/15/2006 | End of Life | FX425A / FX325B | https://www.foxonline.com/pdfs/PCN249_FX325B_FX425A_EOL.pdf |
| 247 | 05/01/2006 | Frequency Range Change | JITO-2, JITO-T | https://www.foxonline.com/pdfs/PCN247%20JITO-2_T%20lower%20freq%20limit%20change.pdf |
| 242 | 03/15/2006 | End of Life | 5 Volt versions of JITO-2 and JITO-T | https://www.foxonline.com/pdfs/PCN242%205V%20JITO-2%20and%20JITOT%20EOL.pdf |
| 240 | 02/02/2006 | End of Life | FSN | https://www.foxonline.com/pdfs/PCN240%20FSN%20EOL.pdf |
| 237 | 12/19/2005 | Product Process Change | F5L-F, F5L-4F | https://www.foxonline.com/pdfs/PCN237F5LF_4FSeriesPackageChange.pdf |
| 236 | 11/07/2005 | End of Life | Real Time Clocks | https://www.foxonline.com/pdfs/PCN236RTCEOL.pdf |
| 223 | 05/02/2005 | Product Process Change | Various Products - see PCN | https://www.foxonline.com/pdfs/PCN223_Pb%20containing%20products.pdf |
| 224 | 04/19/2005 | End Of Life | FST | https://www.foxonline.com/pdfs/PCN244.pdf |
| 215 | 12/17/2004 | Product Marking Change | FSR, FSM and FSX | https://www.foxonline.com/pdfs/PCN215.pdf |
| 188 | 11/14/2003 | End of Life | KFO Series | https://www.foxonline.com/pdfs/PCN188.pdf |
| 182 | 09/01/2003 | Part Marking Change | Various Products - see PCN | https://www.foxonline.com/pdfs/pcn182.pdf |
| 171 | 05/09/2003 | Product Process Change | F530L Series | https://www.foxonline.com/pdfs/ecn171.pdf |
| 170 | 04/16/2003 | End of Life | FSP | https://www.foxonline.com/pdfs/ecn170.pdf |
| 159 | 04/01/2002 | SMD Product Part Marking | Various Products - see PCN | https://www.foxonline.com/pdfs/Pcn_159.pdf |
Since 1979, Fox Electronics has been a global leader in innovative frequency control technology. We meet our customers’ critical design and product needs with industry leading products and service.