{"product_id":"fanuc-a20b-3900-0132-4m-sdram-memory-module","title":"FANUC A20B-3900-0132 4M SDRAM Memory Module","description":"\u003cp style=\"margin: 0 0 14px;\"\u003eThe \u003cstrong\u003eFANUC A20B-3900-0132\u003c\/strong\u003e is a \u003cstrong\u003e4M SDRAM module used as CNC system working memory\u003c\/strong\u003e. It installs in the dedicated DIMM socket on a compatible CPU card and provides volatile memory for CNC software execution and real-time processing while the control is powered.\u003c\/p\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eFANUC documentation identifies A20B-3900-0132 as the 4M memory option for the \u003cstrong\u003eA20B-3300-0170 CPU card\u003c\/strong\u003e. It is commonly described as a 4MB DRAM module, but it must not be confused with SRAM backup memory or a FROM system-software module.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eA20B-3900-0132 Product Information\u003c\/h4\u003e\n\u003ctable cellpadding=\"10\" style=\"width: 100%; border-collapse: collapse; margin: 0 0 18px;\"\u003e\n\u003ccolgroup\u003e\n\u003ccol style=\"width: 34%;\"\u003e\n\u003ccol\u003e\n\u003c\/colgroup\u003e\n\u003ctbody\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFANUC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eModel \/ MPN\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-3900-0132\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eOfficial Module Type\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eSDRAM \/ DRAM memory module\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDocumented Capacity\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e4M, commonly listed as 4MB\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFunction\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eVolatile CNC system RAM\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDocumented CPU Card\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-3300-0170\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eControl Generation\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eCompatible FANUC i-Series Model A configurations\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDIMM memory socket on the CPU card\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eRelated Capacities\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-3900-0130: 12M; A20B-3900-0131: 8M\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eDifferent 4M Module\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eA20B-3900-0042; verify CPU-card compatibility\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eCondition\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNew, refurbished, or used 90% new; subject to stock\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eTesting\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e100% tested before shipping; test video available\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eHandling\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eNormally 1–2 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eShipping \/ ETA\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eDHL, UPS, or FedEx worldwide; typically 3–7 business days\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr style=\"background: #f7f7f7;\"\u003e\n\u003ctd\u003e\u003cstrong\u003eWarranty\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e1 year for new\/refurbished; 3 months for used 90% new\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cstrong\u003eService \/ Packing\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003eFree technical support; anti-static reinforced packing\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eCNC System Working Memory\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eA20B-3900-0132 provides temporary high-speed working memory required while the CNC is operating. Unlike SRAM, it is not the battery-backed area for machine data, and unlike FROM, it does not permanently store system software. A failed or poorly seated module may cause boot failure, RAM or parity alarms, resets or unstable operation.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eCompatibility and Capacity Checks\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eMatch the complete \u003cstrong\u003eA20B-3900-0132\u003c\/strong\u003e number, module revision, 4M capacity, CPU card and DIMM socket. A20B-3900-0130 and A20B-3900-0131 have different capacities. A20B-3900-0042 is also documented as a 4M memory module but for a different CPU-card arrangement, so equal capacity does not prove interchangeability.\u003c\/p\u003e\n\u003ch4 style=\"margin: 32px 0 14px;\"\u003eTesting and Installation Notes\u003c\/h4\u003e\n\u003cp style=\"margin: 0 0 14px;\"\u003eREACO CNC checks the label, contacts, memory recognition, reported capacity, CNC boot and stable operation on an applicable test system. Back up parameters, programs, offsets and PMC data before control hardware service. Isolate power, release the DIMM retainers carefully and use ESD protection during replacement.\u003c\/p\u003e\n\u003cp style=\"margin: 0;\"\u003eRelated resources: \u003ca href=\"\/es\/collections\/fanuc-pcbs\"\u003eFANUC PCB boards\u003c\/a\u003e, \u003ca href=\"\/es\/collections\/fanuc-controls\"\u003eFANUC CNC controls\u003c\/a\u003e and \u003ca href=\"\/es\/products\/fanuc-mitsubishi-cnc-robot-parts-repair\"\u003eFANUC CNC repair services\u003c\/a\u003e.\u003c\/p\u003e","brand":"FANUC","offers":[{"title":"New","offer_id":67933150609623,"sku":"A20B-3900-0132-new","price":248.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/3784\/4183\/files\/fanuc-a20b-3900-0132-sdram-main.webp?v=1793349788","url":"https:\/\/reacocnc.com\/es\/products\/fanuc-a20b-3900-0132-4m-sdram-memory-module","provider":"REACO CNC","version":"1.0","type":"link"}