MIFARE DESFire EV1 4K keyfob - thin, green


MIFARE DESFire EV1 4K keyfob - thin, green
Availability: In stock
£  3.09 Quantity
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£ 3.09
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£ 2.75
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£ 2.47
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£ 2.26
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£ 2.07
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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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* Easter Holidays *

Please note that we are closed for the Easter Holidays from Friday 19th April until Tuesday 23rd April. You can still place an order online during this time, but it will not be shipped until after we return (your card will not be charged until despatch).

We wish a HAPPY EASTER to all our customers.

North America?

If you are based in the USA, Canada or Mexico we would be delighted to serve you directly from our US office. Visit Smartcard Focus USA for local pricing, delivery and support.
Smartcard Focus USA

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