SIC4310 vs UCODE G2iL / G2iL+

Choose the SIC4310 if you need EPC Class 1 Gen2 v2 protocol compliance with enhanced security features including Gen2v2 authentication and Untraceable command support. This chip provides 512 bits (64 bytes) of user memory compared to no dedicated user memory on the UCODE G2iL series, making it suitable for applications requiring additional data storage beyond the standard 128-bit EPC. The SIC4310 operates across the full 860–960 MHz UHF band and implements both 32-bit access and kill passwords alongside the newer Gen2v2 cryptographic authentication features. This makes it appropriate for supply chain applications where future-proof security and larger user memory are priorities, particularly in pharmaceutical tracking, aerospace components, or high-value asset management requiring both product identification and additional serialized data storage. Choose the UCODE G2iL or G2iL+ if you need specialized anti-tampering capabilities or privacy features within the EPC Gen2 v1.2.0 framework. The G2iL+ variant includes Tag Tamper Alarm functionality that detects physical tampering attempts, and both models support Real Read Range Reduction (4R privacy mode) for consumer privacy protection by limiting read distance on demand. The G2iL+ also offers an optional external supply mode via a VDD pin, enabling auxiliary functions or extended reading in low-power scenarios. These chips operate from 840–960 MHz and provide bank-wise read protection for EPC and TID memory, plus a Product Status Flag for supply chain visibility. While user memory is not separately specified, the focus is on tamper detection and flexible power modes. Select this family for retail item-level tagging where source tagging with privacy modes is required, pharmaceutical authentication needing tamper evidence, or applications where the external supply option enables additional sensor integration.