EM4550 Card

The  EM4450/4550  is  a  CMOS  integrated  circuit  intended for  use  in  electronic  Read/Write  RF  Transponders.  The difference between EM4450 and EM4550 is that EM4550 are bumped and has megapads for the two coils. The chip contains  1  KBit  of  EEPROM  which  can  be  configured  by
the user, allowing a write inhibited area, a read protected area,  and  a  read  area  output  continuously  at  power  on.

EM4550 Card is working under low frequency 125Khz. EM4550 (Em-marine) card contains 1K-Bit of read/write memory which can be configured by the user.

EM4550 Card is great solution for access control, pre-payment systems, ticketing systems, loyalty program, time attendance systems and staff identification.

We manufacture blank cards and pre-printed cards.

EM4550 Description:
– Chip: EM4550
– Function: Read/Write
– Memory size: 64 bit read only Serial Number, 1024bit user EEPROM
– Frequency: 125KHz
– Protocol: ISO/IEC 11784/85 Compatible
– RF Protocol: N/A
– Anti-collision: Yes

EM4550 Card Key Features:
– Dimensions: 86 x 54mm
– Thickness: 0.84~0.86mm
– Material: PVC, PET, PETG etc for optional
– Surface: lamination (gloss/mate)
– Working frequency: 125KHz
– Reading distance: 6cm
– Data storage time: minimum 10 years
– Operating temperature: -20 to +60°C
– Stockage temperature: -20 to +65°C
– 250pcs / box, 5000pcs / Carton

Target Application
– Ticketing
– Automotive Immobilizer with rolling code
– High Security Hands Free Access Control
– Industrial automation with portable database
– Manufacturing automation
– Prepayment Devices


– Logo/Graphics/Photo
– Serial Number
– DOD Number
– Barcode printing
– Overlay Foil
– Signature Panel
– Name Personalisation
– Photo Personalisation
– LoCo300
– HiCo2750
– Magstripe Encoding
– Hologram
– Security Printing
– Chip Encoing



For further details, email Marketing@huayuansh.com

HUAYUAN 125khz EM4550 Card Datasheet
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