Complete UHF RFID Chip Guide & Comparison Table
Detailed comparison of read sensitivity (dBm), memory banks (EPC, TID, User Memory), and advanced features of the leading RAIN RFID ICs on the market.
1. Interactive Comparison Table
Updated technical specifications of leading RAIN RFID and Dual-Frequency ICs
| Chip & Manufacturer | Type / Protocol | Sensitivity (dBm) | EPC Memory | User Memory | TID | Special Features | Available Tags |
|---|---|---|---|---|---|---|---|
|
Alien Higgs-3
Alien Technology
|
UHF | -20.0 dBm | 96 bit | 512 bit | 64 bit | Dynamic memory architecture, 512 bit User Memory | View 7 tags |
|
Alien Higgs-9
Alien Technology
|
UHF | -22.5 dBm | 496 bit | 688 bit | 48 bit | Sentinel Memory Architecture, Dynamic EPC/User | View 3 tags |
|
EM4423
EM Microelectronic
|
Dual-Frequency | -19.0 dBm | 224 bit | 1920 bit | 96 bit | Dual-Frequency (UHF + NFC Type 2), Tamper loop | On request |
|
EM4425
EM Microelectronic
|
Dual-Frequency | -20.0 dBm | 480 bit | 2048 bit | 96 bit | Dual-Frequency (UHF + NFC), Web Authentication, Shared memory | View 1 tags |
|
FM13UF011X
Fudan Microelectronics
|
UHF | -19.0 dBm | 128 bit | 512 bit | 96 bit | Cost-effective industrial UHF, 512 bit User Memory | View 1 tags |
|
Impinj M730
Impinj
|
UHF | -24.0 dBm | 128 bit | 0 bit | 96 bit | AutoTune, FastID, Protected Mode | View 4 tags |
|
Impinj M750
Impinj
|
UHF | -24.0 dBm | 96 bit | 32 bit | 96 bit | AutoTune, FastID, User Memory, Protected Mode | View 4 tags |
|
Impinj M780
Impinj
|
UHF | -23.0 dBm | 496 bit | 128 bit | 96 bit | Extended Memory, AutoTune, Industrial grade | View 4 tags |
|
Impinj M781
Impinj
|
UHF | -23.0 dBm | 128 bit | 512 bit | 96 bit | Large User Memory, AutoTune, Industrial | View 1 tags |
|
Impinj M830
Impinj
|
UHF | -24.5 dBm | 128 bit | 0 bit | 96 bit | AutoTune v2, FastID, Low-power, High Sensitivity | View 6 tags |
|
Impinj M850
Impinj
|
UHF | -24.5 dBm | 96 bit | 32 bit | 96 bit | AutoTune v2, FastID, User Memory, High Sensitivity | On request |
|
Impinj Monza 4E
Impinj
|
UHF | -19.5 dBm | 496 bit | 128 bit | 96 bit | True3D dual-port antenna, Extended EPC | View 4 tags |
|
Impinj Monza 4QT
Impinj
|
UHF | -19.5 dBm | 128 bit | 512 bit | 96 bit | QT Privacy profiles, True3D dual-port, 512 bit User | View 4 tags |
|
Impinj Monza R6
Impinj
|
UHF | -22.1 dBm | 96 bit | 0 bit | 96 bit | AutoTune, Integra Diagnostics, Pure EPC | On request |
|
Impinj Monza R6-P
Impinj
|
UHF | -22.1 dBm | 128 bit | 32 bit | 96 bit | AutoTune, Integra Diagnostics, Flexible EPC/User | View 6 tags |
|
NXP ICODE SLIX
NXP
|
HF | — | — | 896 bit | 64 bit | Vicinity read up to 1m, EAS anti-theft, Password protection | On request |
|
NXP NTAG 213
NXP
|
NFC | — | — | 1152 bit | 56 bit | UID mirror, Password protection, Smartphone native | View 1 tags |
|
NXP NTAG 216
NXP
|
NFC | — | — | 7104 bit | 56 bit | High memory NFC, Password protection, Smartphone native | View 1 tags |
|
NXP UCODE 7xm
NXP
|
UHF | -19.0 dBm | 448 bit | 2048 bit | 96 bit | Maxi User Memory (fino a 2 kbit), ATA Spec 2000, Industrial | View 1 tags |
|
NXP UCODE 8
NXP
|
UHF | -23.0 dBm | 128 bit | 0 bit | 96 bit | Brand Identifier, Untraceable feature, Self-tuning | View 11 tags |
|
NXP UCODE 9
NXP
|
UHF | -24.0 dBm | 96 bit | 0 bit | 96 bit | Brand Identifier, Self-adjusting tuning, Memory parity | View 5 tags |
|
NXP UCODE 9XE
NXP
|
UHF | -24.0 dBm | 128 bit | 0 bit | 96 bit | 128-bit EPC extension, Brand Identifier, Self-tuning | View 2 tags |
|
NXP UCODE DNA
NXP
|
UHF | -19.0 dBm | 224 bit | 3072 bit | 96 bit | Crittografia AES-128, Autenticazione crittografica, Anti-cloning | On request |
|
NXP UCODE G2iM
NXP
|
UHF | -17.5 dBm | 256 bit | 640 bit | 96 bit | Digital Switch, Tamper alarm, Conditional Read | View 1 tags |
|
TH6101R2B
Tonghe
|
UHF | -19.0 dBm | 128 bit | 512 bit | 96 bit | High reliability industrial | View 1 tags |
Chip Sensitivity (dBm): The Most Critical Parameter
Chip sensitivity (expressed in dBm) indicates the minimum RF power the chip must receive from the reader antenna to wake up and backscatter its signal.
Because dBm values are negative, a lower (more negative) number indicates superior sensitivity. For instance, an IC with -24 dBm sensitivity (like Impinj M730 or NXP UCODE 9) is significantly more sensitive than a legacy -20 dBm chip.
La Legge del Raddoppio RF
RF Rule of Thumb: Every 3 dB improvement in sensitivity doubles the power efficiency of the chip and translates into a 30-40% increase in read range at equivalent antenna gain!
Leggi l'analisi tecnica completa: Dalla formula $1/d^4$ al +40% di portata sul campoMemory Bank Architecture (Gen2 / ISO 18000-6C)
Bank 00 — Reserved Memory
Houses 32-bit passwords: Kill Password (to permanently silence the tag) and Access Password (to lock memory banks against unauthorized writes).
Bank 01 — EPC (Electronic Product Code)
The memory bank read most rapidly during mass inventory scans. Typically 96 or 128 bits. Stores the product identifier (such as GS1 SGTIN-96).
Bank 10 — TID (Tag Identifier)
Globally unique silicon serial number factory-encoded by the chip manufacturer (typically 96 bits with 48 or 64 bits of unalterable unique serial).
Bank 11 — User Memory
Optional user-accessible memory (from 0 bits up to 2048 bits). Essential for decentralized data logging directly on the asset without central database lookups.
Leading IC Manufacturers Compared
Impinj (Monza, M700, and M800 series)
The global pioneer in RAIN RFID. The M700 (M730/M750) and next-gen M800 (M830/M850) series set the industry benchmark for sensitivity (-24.0 / -24.5 dBm) and speed, backed by AutoTune dynamic impedance matching technology.
NXP Semiconductors (UCODE series)
Global semiconductor powerhouse. The UCODE 9 and 9XE line delivers top-tier -24 dBm performance with Brand Identifier. UCODE 7xm provides massive memory (up to 2 kbits) for aerospace and automotive, while UCODE DNA features hardware AES-128 cryptographic authentication.
Alien Technology (Higgs series)
Early pioneer of passive RFID. Higgs-3 and Higgs-9 chips are renowned for generous user memory allocations and proven durability in manufacturing and supply chain operations.
EM Microelectronic (Dual-Frequency UHF + NFC)
Pioneers in hybrid dual-frequency chips (EM4423, EM4425). They bridge industrial RAIN RFID pallet-level logistics with consumer-facing one-touch NFC smartphone interactions.
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