MIFARE DESFire EV1 4K keyfob - thin, green

MIFARE DESFire EV1 4K keyfob - thin, green
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Coming soon - We are arranging supplies of this product. You will not be able to order just yet. Check back soon, or contact us to find out more about timescales.
In stock - This product is on the shelf in our UK warehouse and ready for use. If you place an order you can expect immediate dispatch. Depending on courier, delivery is typically next day in the UK, or 3-5 days in the US.
In stock* - This product is on the shelf in our UK warehouse, but requires some configuration or assembly before dispatch, which can add a day or two to delivery times, depending on product and order quantities.
Low stock - This product is on the shelf in our UK warehouse. If your order quantity is small you will not notice any difference from 'in stock' product. If you are ordering larger quantities, there could be delays while we wait for additional stock to arrive. Contact us to discuss options for part delivery.
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Ordered on demand - We have a regular supplier but will only order when an order is placed with us and can then advise on delivery timescales. Please note that 'Ordered on demand' items are not returnable.
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£ 3.28
(£ 3.94 inc VAT)
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£ 3.28
10+
£ 3.12
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£ 2.98
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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

Memory
EEPROM size [byte]: 4096bytes (MIFARE DESFire 4k); 8192bytes (MIFARE DESFire 8k)
Write-endurance [cycles]: 500 000
Data retention [years]: 10
Organisation: flexible file system

RF-Interface
Acc. to ISO 14443A: yes - up to layer 4
Frequency [MHz]: 13.56
Baudrate [kbit/s]: 106 ...848
Anticollision: bit-wise
Operating distance [mm]: Up to 100

Security
Unique Serial Number [byte]: 7, cascaded
Random Number Generator: Yes
Access keys: 14 keys per application
Access conditions: per file
DES & DES3 security: MACing / Encipherment
AES security: MACing / Encipherment
Anti-tear supported by chip: yes

Special Features
Multi-application : 28 applications, MAD3
Purse functionality: Value file
Secure Transport Transaction: 512 byte read, 128 byte write
Transaction Time [ms]: 89

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


DESFire 4k keyfob tag Product Briefing

DESF4 keyfob tag_product_briefing.pdf
Download everything you have read here on SmartcardFocus about the DESFire 4k keyfob tag.
download


DESFire 4k keyfob tag Technical Specification

TechnicalSpecification_MF3ICDX21_41_81_SDS_Dec2015.pdf
Technical Specification v3.2 for the DESFire 4k keyfob tag from NXP.
download
×

Stock availability on SmartcardFocus

Coming soon - We are arranging supplies of this product. You will not be able to order just yet. Check back soon, or contact us to find out more about timescales.
In stock - This product is on the shelf in our UK warehouse and ready for use. If you place an order you can expect immediate dispatch. Depending on courier, delivery is typically next day in the UK, or 3-5 days in the US.
In stock* - This product is on the shelf in our UK warehouse, but requires some configuration or assembly before dispatch, which can add a day or two to delivery times, depending on product and order quantities.
Low stock - This product is on the shelf in our UK warehouse. If your order quantity is small you will not notice any difference from 'in stock' product. If you are ordering larger quantities, there could be delays while we wait for additional stock to arrive. Contact us to discuss options for part delivery.
Stock on the way - This product is usually on the shelf in our UK warehouse, but we have sold out and are waiting for new stock to arrive. You can still order but delivery will be slower than usual. Contact us to find out more about timescales.
Ordered on demand - We have a regular supplier but will only order when an order is placed with us and can then advise on delivery timescales. Please note that 'Ordered on demand' items are not returnable.
Contact us - There are currently supply issues with this product. You will not be able to order the product. Contact us to find out more about the nature of any issues and for advice on alternatives.
Not available - There are no plans to restock this item, it will shortly be removed from the site.
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