MIFARE DESFire EV1 4K keyfob - thin, green


MIFARE DESFire EV1 4K keyfob - thin, green
Availability: In stock
£  2.73
(£  3.28 inc VAT)
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A green 45mm x 30mm x 2.2mm keyfob containing a MIFARE DESFire EV1 4K chip. This extremely durable, 100% waterproof thin keyfob is designed to be attached directly to a keyring. A useful alternative for contactless systems, it operates at 13.56 MHz wireless frequency, according to the ISO 14443A standard with the transport protocol complying to the ISO 14443-4 standard.

The MIFARE DESFire EV1 4K keyfob contains 4K bytes of non-volatile memory, a high speed triple-DES data encryption co-processor, a flexible memory organization structure, a mutual 3-pass authentication technique together with a true random number generator and an anti-tear mechanism to guarantee data integrity during contactless transactions.

MIFARE DESFire keyfobs typically operate at a distance of up to 10cm depending on the power provided by the reader.

This keyfob is NFC forum type 4 compliant.

MIFARE DESFire cards & tags



Technical Specifications:
Product FeaturesMIFARE DESFire 4kMIFARE DESFire 8k
Memory
EEPROM size [byte]40968192
Write Endurance [cycles]500 000500 000
Data Retention [yrs]1010
Organizationflexible file systemflexible file system
RF-Interface
Acc. to ISO 14443Ayes - up to layer 4yes - up to layer 4
Frequency [MHz]13.5613.56
Baudrate [kbit/s]106 … 848106 … 848
Anticollisionbit-wisebit-wise
Operating Distance [mm]up to 100up to 100
Security
Unique Serial Number [byte]7, cascaded7, cascaded
Random Number Generatoryesyes
Access Keys14 keys per application14 keys per application
Access Conditionsper fileper file
DES & DES3 SecurityMACing / EnciphermentMACing / Encipherment
AES SecurityMACing / EnciphermentMACing / Encipherment
Anti-tear supported by chipyesyes
Special Features
Multi-application28 applications, MAD328 applications, MAD3
Purse FunctionalityValue fileValue file
Secure Transport Transaction512 byte read, 128 byte write512 byte read, 128 byte write
Transaction Time [ms]8989


Typical applications include:
  • Transport
  • Access control
  • Loyalty
  • Internet applications
A picture of the MIFARE DESFire EV 4k thin keyfob is shown below.

Manufacturer: NXP

MIFARE DESFire cards & tags
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COVID-19 UPDATE - July 2020

We are operating as normal while adhering to UK government guidelines for the safety of our staff and customers. Although some supply chains are disrupted, we are maintaining our normal level of stocks in our UK warehouse and continue to receive goods and ship orders on a daily basis, both nationally and internationally.

We are shipping all UK mainland Express orders received before 2:30pm UK time to arrive next day. Please contact us by phone or email if you need specific information on stock levels, shipping options and cut-off times, or to discuss your exact requirements in more detail.

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