The Most Complete UHF RFID Chip list

When selecting a UHF RFID chip, many customers care about key specifications such as memory capacity, user memory availability, read sensitivity, and whether the chip supports access and kill passwords.

To simplify the decision process, RFIDSU has compiled the most comprehensive UHF RFID chip comparison table available, covering major international brands as well as the domestic Qastar chip. This table helps you quickly compare features and choose the right chip for your project.

Factory	Chip	Sensitivity	Factory Code	TID Number	TID Memory	EPC Memory	USER Memory	Access	Kill
Alien	Higgs3	-20	03	E2003412	96	96-480	512	32	32
Alien	Higgs4	-20.5	03	E2003414	96	96/128	128	32	32
Alien	HiggsEC	-22.5	03	E2003811	96	96/128	128	32	32
Alien	Higgs9	-22.5	03	E2003821	96	96-496	688	32	32
NXP	G2XM	-15	06	E2006003	96	240	512	32	32
NXP	G2XL	-15	06	E2006004	96	240	0	32	32
NXP	G2iL	-18	06	E2006806	96	128	0	32	32
NXP	G2iL+	-18	06	E2006807	96	128	0	32	32
NXP	G2iM	-17.5	06	E200680A	96	256	512	32	32
NXP	G2iM+	-17.5	06	E200680B	96	128-448	320-640	32	32
NXP	Ucode7	-21	06	E2006890	96	128	0	32	32
NXP	Ucode7m	-21	06	E2006811	96	128	32	32	32
NXP	Ucode7xm	-19	06	E2006D12	96	448	1024	32	32
NXP	Ucode7xm+	-19	06	E2006D92	96	448	2048	32	32
NXP	Ucode DNA	-19	06	E2006B12	96	224	1024	32	32
NXP	Ucode 8	-23	06	E2006894	96	128	0	32	32
NXP	Ucode 8m	-23	06	E2006994	96	96	32	32	32
NXP	Ucode 9	-24	06	E2006995	96	96	0	32	32
Impinj	Monza 4	-19.5	01	E2801114	96	256	480	32	32
Impinj	Monza 4D	-19.5	01	E2801100	96	128	32	32	32
Impinj	Monza 4E	-19.5	01	E280110C	96	496	128	32	32
Impinj	Monza 4QT	-19.5	01	E2801105	96	128	512	32	32
Impinj	Monza 4i	-19.5	01	E2801106	96	256	480	32	32
Impinj	Monza 4u	-19.5	01	E2801107	96	128	32	32	32
Impinj	Monza 5	-20	01	E2801130	96	128	32	32	32
Impinj	Monza R6	-22.1	01	E2801160	96	96/128	32	32	32
Impinj	Monza R6-P	-22.1	01	E2801170	96	96/128	32/64	32	32
Impinj	Monza R6-A	-22.1	01	E2801171	96	96	0	32	32
Impinj	Monza R6B	-22.1	01	E2801172	96	96	0	32	32
Impinj	Monza S6-C	-22.1	01	E2801173	96	96	0	0	0
Impinj	Monza M730	-24	01	E2801191	96	128	32	32	32
Impinj	Monza M750	-24	01	E2801190	96	96	32	32	32
EM	4324	-27	0B	E200B001	96	96	720	32	32
EM	4325	-30	0B	E2008XXX	96	320	720	32	32
EM	4423	-18	0B	E28080A	96	128/224	64/160	32	32
EM	4124	-19	0B	E2008080	96	96	0	32	32
EM	4126	-19	0B	E20080C0	96	208	0	0	0
Qastar	QS200	-22.5	QA	QS2023XX	96	128	0	32	32
Qastar	QS300	-21	QA	QS2023XX	96	128	512	32	32
Qastar	QS400	-20	QA	QS2023XX	96	496	512	32	32
Qastar	QS500	-24	QA	QS2023XX	96	96	0	32	32
Qastar	QS800	-18	QA	QS2023XX	96	448	1024	32	32

Encoding tips

Memory Basics: Bits vs. Characters

RFID memory is measured in bits. But most users think in terms of numbers or letters. So, here’s a simple conversion:

Conversion Formula:

4 bits = 1 hexadecimal character

Hexadecimal characters include:

0 1 2 3 4 5 6 7 8 9 A B C D E F

How Much Can You Write?

Let’s apply that formula to some common EPC memory sizes:

EPC Memory	Calculation	Usable Characters
96 bits	96 ÷ 4 = 24 chars	24 digits/letters
128 bits	128 ÷ 4 = 32 chars	32 digits/letters
496 bits	496 ÷ 4 = 124 chars	124 digits/letters
688 bits	688 ÷ 4 = 172 chars	172 digits/letters

Important Notes:

Must be a multiple of 4 bits to align with hexadecimal format.

You cannot write characters like “G, H, Z”—only numbers and A–F are allowed.

Some chips do not support USER memory—check carefully before choosing.

If you need any further support, feel free to contact us.

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