# NXP Mifare DESFire EV2 4K 13.56 MHz Blank White ISO PVC Cards ## Introduction to NXP Mifare DESFire EV2 4K Cards **NXP Mifare DESFire EV2 4K 13.56 MHz blank white ISO PVC cards** represent a significant advancement in contactless smart card technology. As someone who has worked extensively with RFID systems, I can attest to the reliability and security these cards offer. My experience deploying them in access control systems has shown their robustness in high-traffic environments, where their fast transaction speeds and encryption capabilities truly shine. ## Technical Specifications and Parameters When evaluating **NXP Mifare DESFire EV2 4K 13.56 MHz blank white ISO PVC cards**, understanding their technical specifications is crucial for proper implementation. ### Physical Dimensions and Characteristics - **Card Dimensions:** 85.6 mm × 54.0 mm × 0.76 mm (ISO/IEC 7810 ID-1 standard) - **Material:** High-quality white PVC with optional holographic overlay - **Weight:** Approximately 5.5 grams - **Operating Temperature:** -25°C to +70°C - **Storage Temperature:** -40°C to +85°C ### Chip and Memory Specifications - **Chip:** NXP MF3DHx2 (MF3DH22) or equivalent DESFire EV2 series - **Memory Capacity:** 4KB EEPROM (4096 bytes) - **Communication Interface:** ISO/IEC 14443 Type A, 13.56 MHz - **Data Retention:** Minimum 10 years - **Write Endurance:** 500,000 cycles minimum ### Security Features - **Encryption:** AES-128, 2K3DES, 3K3DES - **Mutual Authentication:** Three-pass authentication - **Secure Messaging:** Encrypted communication - **Key Diversification:** Unique key per application - **Tamper Protection:** Active shielding against physical attacks *Note: These technical parameters are reference data. For exact specifications, please contact our backend management team.* ## Personal Experience with DESFire EV2 Implementation In my previous role as a systems integrator, I discovered a particular aptitude for optimizing RFID deployments. One project involved mi