NFC Chip Types

An NFC chip is implemented by one of several chip types; each with its own tag types and standards, appropriate uses cases, features, limitations, availability and costs. Unless there is a specific technical reason to use an uncommon NFC chip type, it is best to use a recommended NFC chip type.

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NFC Chip Type Comparison

The following is a comparison of the commonly used NFC chip types for Connected Things projects. There are additional NFC chip types available, but they are old, uncommon or not often used for Connected Things projects.

NFC ChipTypeMemoryNDEF FormatFeaturesNotes
NXP NTAG210Type 248 bytesPre-NDEF Formatted7 byte UID; lockable; originality signature; password protection; UID mirroringNDEF formatted version of Ultralight EV1; small user memory
NXP NTAG213Type 2144 bytesPre-NDEF Formatted7 byte UID; lockable; originality signature; password protection; UID mirroring; counterPopular NFC chip type
NXP NTAG215Type 2504 bytesPre-NDEF Formatted7 byte UID; lockable; originality signature; password protection; UID mirroring; counterPopular in gaming; larger memory version of NTAG213; use only when additional memory is required
NXP NTAG216Type 2888 bytesPre-NDEF Formatted7 byte UID; lockable; originality signature; password protection; UID mirroring; counterLarger memory version of NTAG213; use only when additional memory is required
NXP NTAG203Type 2144 bytesPre-NDEF Formatted7 byte UID; lockable; counterOriginal product in NTAG2xx series; replaced by NTAG213
NXP MIFARE Ultralight
(MF0ICU1)
Type 248 bytesNDEF Formattable4 byte UID; lockableOld; insecure; limited availability; do not use unless required
NXP Ultralight C
(MF0ICU2)
Type 2148 bytesNDEF Formattable7 byte UID; lockable; counter; authenticationOld; insecure; limited availability; do not use unless required
NXP Ultralight EV1
(MF0ULx1)
Type 248 bytesNDEF Formattable7 byte UID; lockable; originality signature; password protectionModern version of Ultralight
NXP ICODE SLIX
(SL2S2002, SL2S2102)
Type 5112 bytesNDEF Formattable8 byte UID; lockable; password protectionLonger range when used with applicable device
NXP ICODE SLIX2 (SL2S2602)Type 5316 bytesNDEF Formattable8 byte UID; lockable; originality signature; password protectionModern version of SLIX; longer range when used with applicable device
EM4425V10Type 5184 bytes shared NFC / UHF RFIDNDEF Formattable8 byte UID; lockable; originality signature; password protection; counterDual NFC and UHF chip; a pre-initialized version of EM4425V12
EM4425V12Type 5Shared NFC / UHF RFID; configurable at initializationNDEF Formattable8 byte UID; lockable; originality signature; password protection; counterDual NFC and UHF chip; must be initialized before use
NXP Mifare Classic 1k
(MF1S503x)
Not NFC Forum1024 bytes totalNot NFC Forum4 byte non-unique UIDOld; not NFC Forum; not for Connected Things
NXP Mifare Classic 4k
(MF1S703x)
Not NFC Forum4096 bytes totalNot NFC Forum4 byte non-unique UIDOld; not NFC Forum; not for Connected Things