Mask Designer ID Assignment (MDID)

An EPC TID memory bank shall contain an 8 bit ISO/IEC 15963 allocation class identifier of E2h at memory locations 00h to 07h. TID memory locations 08h to 13h contain a 12 bit Tag mask designer identifier (MDID) obtainable from EPCGlobal. EPCGlobal will assign two MDIDs to each mask designer, one with bit 08h set to one and one with it set to zero. Readers that are not configured to handle the extended TID will treat both of these numbers as a 12 bit MDID. Readers that are configured to handle the extended TID will recognize the TID memory location 08h as the Extended Tag Identification bit. The value of this bit indicates the format of the rest of the TID. A value of zero indicates a short TID in which the values beyond address 1Fh are not defined. A value of one indicates an Extended Tag Identification (XTID) in which the values beyond 1Fh contain additional data as specified here. Tag manufacturers should write permalock the fields in both the short and extended TIDs at the time of manufacture.

For more Information see also Tag Data Standard.

Apply for a Tag Mask Designer Identifier (MDID)

The following list of MDIDs was last updated on 27 February 2017.

Company Address 08h=0 (no XTID) Address 08h=1 (with XTID) Product Specifications 
Impinj 001 801 Impinj
Texas Instruments  002 802 Texas Instruments
Alien Technology 003 803 Alien Technology 
Intelleflex  004 804 Intelleflex 
Atmel  005 805 Atmel 
NXP Semiconductors  006 806 NXP Semiconductors 
ST Microelectronics  007 807 ST Microelectronics
EP Microelectronics  008 808  
Motorola (formerly Symbol Technologies) 009 809 Motorola
Sentech Snd Bhd  00A 80A  
EM Microelectronics  00B 80B EM Microelectronics
Renesas Technology Corp. 00C 80C Renesas Technology Corp.
Mstar 00D 80D  
Tyco International 00E 80E  
Quanray Electronics 00F 80F Quanray Electronics
Fujitsu 010 810  
LSIS 011 811  
CAEN RFID srl 012 812 CAEN
Productivity Engineering Gesellschaft fuer IC Design mbH 013 813  
Federal Electric Corp. 014 814  
ON Semiconductor 015 815  
Ramtron 016 816  
Tego 017 817  
Ceitec S.A. 018 818 Ceitec S.A.
CPA Wernher von Braun 019 819  
TransCore 01A 81A  
Nationz 01B 81B  
Invengo 01C 81C  
Kiloway 01D 81D  
Longjing Microelectronics Co. Ltd. 01E 81E  
Chipus Microelectronics 01F 81F  
Maintag 021 821  
Yangzhou Daoyuan Microelectronics Co. Ltd 022 822  
Gate Elektronik 023 823  
RFMicron, Inc. 024 824  
RST-Invent LLC 025 825  
Crystone Technology 026 826  
Shanghai Fudan Microelectronics Group  027 827  
Farsens 028 828  
Giesecke & Devrient GmbH 029 829  
AWID 02A 82A  
Unitec Semicondutores S/A 02B 82B  
Q-Free ASA 02C 82C  
Valid S.A. 02D 82D  
Fraunhofer IPMS 02E 82E  
ams AG 02F 82F  
Angstrem JSC 030 830  
Honeywell 031 831  
Huada Semiconductor Co. Ltd (HDSC) 032 832  
Lapis Semiconductor Co., Ltd. 033 833  
PJSC Mikron 034 834  


  • Clicking on the company name links to their home page  (where provided)
  • clicking on the company name in the product specifications (where available) links to the Product data sheets