Our 13.56MHz White Blank MIFARE Classic 1K S50 RFID Cards are contactless smart cards designed for access control, hotel key cards, identification, membership programs, transportation, and other HF RFID applications. With a standard CR80 card size and an embedded 13.56MHz RFID chip, the cards communicate wirelessly with compatible readers without requiring physical contact.
The MIFARE Classic 1K card is one of the widely used contactless smart card formats for applications that require both identification and on-card data storage. The white blank PVC surface can also be customized with logos, numbers, barcodes, QR codes, photos, or other printed information according to project requirements.
Different RFID chips are available for different applications, including MIFARE Classic, MIFARE Ultralight, MIFARE DESFire, MIFARE Plus, NTAG, ISO15693, 125kHz, and UHF RFID options. Please select the chip according to the reader, card system, and application requirements rather than choosing a card based only on its operating frequency.
Product Overview
MIFARE Classic 1K, also commonly referred to as MIFARE S50, is a 13.56MHz contactless smart card based on the ISO/IEC 14443 Type A technology family. The card receives power from the reader through RF induction and exchanges data wirelessly over a short range.
Unlike a traditional magnetic stripe or contact card, the user does not need to insert the card into a reader. The card can simply be presented near a compatible reader or terminal.
The standard white blank card is suitable for organizations that need to encode cards themselves or require customized card printing for a particular RFID project.
| Feature | Specification |
|---|---|
| Product Type | Contactless RFID Smart Card |
| Main Chip | MIFARE Classic 1K / S50 |
| Operating Frequency | 13.56MHz |
| Technology | HF RFID |
| Standard | ISO/IEC 14443 Type A |
| Card Size | 85.5 × 54 × 0.86 mm |
| Card Format | Standard CR80 |
| Material | PVC |
| Color | White |
| Surface | Blank, printable |
| Communication | Contactless RF communication |
| Typical Applications | Access control, hotel cards, identification, membership, ticketing |
| Custom Printing | Available according to project requirements |
| Packaging | 200 cards per white box; multiple boxes per carton |
Standard size: 85.5*54*0.86 mm
Frequently used RFID chip for hotel key card: NXP MIFARE Classic® 1K (for guest) NXP MIFARE Classic® 4K (for staff) NXP MIFARE Ultralight® EV1, etc

Contactless Mifare Cards
Contactless Mifare cards are proximity cards (these do not touch). These communicate with and are powered by the reader through RF induction. RFID Mifare cards, radio frequency integrated circuit RFID card and MIFARE cards are all contactless cards.
The MIFARE name is derived from the term Mikron FARE Collection system, which is the trademark of NXP Semiconductors. These employ an RFID between the card and the reader and so do not require insertion of the card. Instead, the card is passed along the exterior of the reader and the read.
A contactless smartchip based device includes an embedded secure microcontroller or equivalent intelligence, internal memory and a small antenna, and communicates with a reader through a contactless RF interface. The contactless interface provides users with the convenience of allowing the contactless device to be read at short distances with fast transfer of data. A MIFARE card has a much larger memory than an RFID card and is widely used in hotels as payment cards and for identification purposes.
MIFARE family available for smartcard solutions are MIFARE Classic, MIFARE Plus, MIFARE DESire and MIFARE Ultralight . These offer more than 40 different applications, some of which are limited use tickets in public transport (single and multiple trip tickets, tourist weekend passes), event ticketing (stadiums, exhibitions, amusement parks), loyalty and closed-loop payment schemes, access management, employee cards,school cards, citizen cards and for car parking.
In brief, MIFARE technology , a trademark of NXP Semiconductors, is used for contactless smartcards and is RF enabled. Whereas, RFID is also RF-enabled but is used for identification purposes.
| Chip Options | |
| ISO14443A | MIFARE Classic® 1K, MIFARE Classic ® 4K |
| MIFARE® Mini | |
| MIFARE Ultralight ®, MIFARE Ultralight ® EV1, MIFARE Ultralight® C | |
| Ntag213 / Ntag215 / Ntag216 | |
| MIFARE ® DESFire ® EV1 (2K/4K/8K) | |
| MIFARE ® DESFire® EV2 (2K/4K/8K) | |
| MIFARE Plus® (2K/4K) | |
| Topaz 512 | |
| ISO15693 | ICODE SLI-X, ICODE SLI-S |
| 125KHZ | TK4100, EM4200, EM4305,T5577 |
| 860~960Mhz | Alien H3, Impinj M4/M5 |
Remark:
MIFARE and MIFARE Classic are trademarks of NXP B.V.
MIFARE DESFire are registered trademarks of NXP B.V. and are used under license.
MIFARE and MIFARE Plus are registered trademarks of NXP B.V. and are used under license.
MIFARE and MIFARE Ultralight are registered trademarks of NXP B.V. and are used under license.
What Is a MIFARE Classic 1K S50 Card?
MIFARE Classic 1K is a contactless smart card technology designed for applications that require secure communication between a card and a compatible reader.
The “1K” designation refers to the card’s nominal 1KB memory capacity. The memory is organized into sectors and blocks, with access conditions and authentication information controlling how individual areas are used.
This structure makes MIFARE Classic cards suitable for systems that need more than simple card identification. Depending on the application, data can be stored in designated memory areas and accessed by authorized readers.
The MIFARE Classic 1K format is different from NFC tags such as NTAG213, NTAG215, and NTAG216. Although these products operate at 13.56MHz, their memory structures, protocols, and intended applications are not identical.

MIFARE Classic 1K Memory Structure
A MIFARE Classic 1K card contains 16 sectors. Each sector consists of four blocks, with each block containing 16 bytes.
The final block of each sector is the sector trailer. It contains authentication keys and access conditions, so the entire nominal memory capacity should not be treated as freely available user storage.
| Memory Structure | MIFARE Classic 1K |
|---|---|
| Nominal Memory | 1KB |
| Number of Sectors | 16 |
| Blocks per Sector | 4 |
| Bytes per Block | 16 |
| Sector Trailer | 1 block per sector |
| Communication | Contactless |
| Frequency | 13.56MHz |
The exact amount of memory available to an application depends on how the card is configured and how the application uses the sector trailers and access conditions.
MIFARE Classic 1K vs Other 13.56MHz Cards
Not every 13.56MHz card is a MIFARE Classic 1K card. Selecting the correct chip is important because a reader or existing card system may support only specific technologies.
| Card Type | Typical Memory / Capacity | Typical Use | Key Consideration |
|---|---|---|---|
| MIFARE Classic 1K | 1KB nominal | Access control, hotel cards, ID systems | Requires compatible Classic system |
| MIFARE Classic 4K | 4KB nominal | Larger access and data applications | More memory than 1K |
| MIFARE Ultralight EV1 | Small memory | Tickets, disposable credentials | Designed for lightweight applications |
| NTAG213 | 144 bytes user memory | NFC tags, URLs, smart labels | Common for NFC applications |
| NTAG215 | 504 bytes user memory | NFC applications, digital content | More user memory than NTAG213 |
| NTAG216 | 888 bytes user memory | NFC tags and larger data | Larger NTAG memory |
| MIFARE DESFire EV1/EV2 | 2K/4K/8K | Secure access, ticketing, payment | Advanced application architecture |
| MIFARE Plus | 2K/4K | Security-focused applications | Migration and security features |
The best card is not necessarily the card with the largest memory. Compatibility with the existing reader, encoding software, access-control platform, or card management system is usually the most important factor.
MIFARE Classic 1K vs MIFARE Classic 4K
MIFARE Classic 1K and 4K use the same general MIFARE Classic concept but provide different memory capacities.
| Feature | MIFARE Classic 1K | MIFARE Classic 4K |
|---|---|---|
| Nominal Memory | 1KB | 4KB |
| Frequency | 13.56MHz | 13.56MHz |
| Technology | ISO/IEC 14443 Type A | ISO/IEC 14443 Type A |
| Typical Application | Guest cards, access cards | Applications requiring more memory |
| Physical Card Size | CR80 | CR80 |
| Contactless Operation | Yes | Yes |
A 1K card can be a practical option when the application requires a relatively small amount of stored data. A 4K version may be more appropriate when the application requires additional sectors and memory.
However, replacing a 1K card with a 4K card does not automatically make it compatible with an existing system. The card technology and application configuration should be verified before ordering.
Why Choose a White Blank RFID Card?
A blank white card provides a flexible starting point for card issuance and customization.
Organizations can print their own branding, card numbers, employee information, membership details, or other visual identifiers. The RFID chip remains embedded inside the card while the printed surface provides information that users can see.
Blank cards are commonly useful for:
- Hotel and hospitality card programs
- Employee identification
- Access control credentials
- Membership cards
- School identification
- Visitor cards
- Event credentials
- Customer loyalty programs
- Closed-loop applications
For high-volume projects, custom printing and encoding can be discussed according to the required card design, chip type, quantity, and personalization process.
Hotel Key Card Applications
MIFARE cards are widely used in hospitality and access-control environments. A hotel may use contactless cards as guest credentials, staff credentials, or cards for access to selected facilities.
For example, a hotel card system may associate a card with a guest’s room and authorized access period. Staff credentials may be configured differently to provide access to service areas or other authorized locations.
However, the exact card technology used by a hotel door lock varies by manufacturer and system generation. A card operating at 13.56MHz is not automatically compatible with every hotel lock.
Before purchasing replacement cards, confirm the following information:
- Existing card chip type
- Hotel lock or access-control system
- Reader technology
- Card frequency and protocol
- Card memory requirements
- Encoding or issuing software
- Required card security configuration
For an existing hotel system, it is recommended to test a sample card before placing a large-volume order.
Contactless RFID Communication
The card contains an RFID antenna and integrated circuit. When the card is placed within the operating field of a compatible reader, the reader generates an RF field that can provide power to the passive card.
Data is then exchanged wirelessly between the card and reader.
This contactless design provides several practical advantages:
- No physical insertion is required
- Fast presentation to the reader
- No exposed electrical contacts
- Convenient for repeated daily use
- Suitable for cards carried in wallets or card holders
- Supports a wide range of identification and access applications
The actual reading distance depends on the card, reader, antenna design, installation environment, and system configuration. Therefore, a fixed reading distance should not be assumed without testing the complete reader-card combination.
MIFARE Classic Cards for Access Control
Contactless MIFARE cards can be integrated into access-control systems that support the corresponding card technology.
A typical access-control application may use a card as a credential for doors, restricted areas, offices, schools, parking facilities, or employee access.
The card itself is only one component of the complete system. Reader hardware, access-control software, card encoding, authentication, and credential management all influence system compatibility and security.
For new access-control projects, the card technology should therefore be selected together with the reader and software rather than independently.
Card Printing and Customization
The white PVC surface provides a clean base for card personalization.
Depending on project requirements, customization may include:
- Company or hotel logos
- Card numbers
- Employee names
- Guest information
- Membership numbers
- Barcodes
- QR codes
- Photos
- Brand colors
- Sequential numbering
- Other identification graphics
For customized orders, artwork requirements, printing method, card quantity, chip type, and personalization data should be confirmed before production.
Standard Card Dimensions
The card follows the common CR80 card format.
| Dimension | Specification |
|---|---|
| Length | 85.5 mm |
| Width | 54 mm |
| Thickness | 0.86 mm |
| Form Factor | Standard bank-card size |
| Material | PVC |
| Color | White |
The standard card format makes it suitable for many existing card printers, holders, wallets, and card-management workflows, subject to printer and equipment compatibility.
Packaging
The standard packaging described for this product is designed for bulk RFID card orders.
| Packaging Level | Quantity |
|---|---|
| White Box | 200 RFID cards |
| Carton | 5, 10, or 15 boxes |
| Total per Carton | 1,000 / 2,000 / 3,000 cards |
Packaging quantities can be confirmed with the supplier when placing an order, particularly for customized or large-volume projects.

Normal package :
200pcs rfid cards into white box .
5 boxes /10boxes /15boxes into one carton.
How to Choose the Right RFID Card
Choosing an RFID card should start with the reader and application requirements.
Step 1: Identify the frequency.
Determine whether your system uses 125kHz, 13.56MHz HF RFID, or 860–960MHz UHF RFID.
Step 2: Identify the chip.
If your system requires MIFARE Classic 1K, specify MIFARE Classic 1K rather than simply requesting a “13.56MHz RFID card.”
Step 3: Check the protocol.
For this product, the main configuration is ISO/IEC 14443 Type A.
Step 4: Confirm memory requirements.
Choose 1K, 4K, or another chip according to the application’s data requirements.
Step 5: Test compatibility.
For an existing access-control or hotel system, test samples with the actual reader and software before ordering in bulk.
Step 6: Confirm personalization.
Decide whether you need blank cards, printed cards, encoded cards, or individually personalized cards.
Frequently Asked Questions
Is MIFARE Classic 1K the same as S50?
MIFARE Classic 1K is commonly associated with the MIFARE S50 designation. When ordering, it is still advisable to specify the exact chip and card technology required by your system.
Does a MIFARE Classic 1K card work with every 13.56MHz reader?
No. 13.56MHz is a frequency, not a guarantee of compatibility. Readers may support different protocols and card technologies. Confirm that the reader specifically supports MIFARE Classic 1K or the required standard.
Can these cards be used as hotel key cards?
They can be used for hotel applications when the hotel lock and card-issuing system are designed to support the corresponding MIFARE card technology. Existing hotel systems should be tested before purchasing replacement cards.
Can the white cards be printed?
Yes. The blank white PVC surface can be used for card printing and personalization. The exact printing method and compatibility should be confirmed according to the card printer and customization requirements.
What is the difference between MIFARE Classic 1K and NTAG213?
Both commonly operate at 13.56MHz, but they are different chip technologies. MIFARE Classic 1K is commonly used for access-control and smart-card applications, while NTAG213 is widely used for NFC tags and applications such as storing short digital information or URLs.
What is the difference between RFID and MIFARE?
RFID is a broad technology category covering radio-frequency identification systems. MIFARE is a family of contactless smart-card technologies associated with NXP. MIFARE products therefore represent one group within the wider RFID ecosystem.
Are MIFARE Classic 1K cards rewritable?
MIFARE Classic cards contain writable memory areas, but whether a particular area can be written depends on the card’s access conditions and authentication configuration. The application system determines how the available memory is used.
What information should I provide when requesting a quotation?
For an accurate quotation, provide the chip model, card quantity, card dimensions, printing requirements, encoding requirements, and packaging requirements. If the cards are intended to replace existing credentials, providing the reader or card-system information can also help verify compatibility.
Order MIFARE Classic 1K RFID Cards
Whether you need blank cards for in-house encoding or customized RFID cards for an access-control, hospitality, membership, or identification project, selecting the correct chip is essential.
Our available card configurations cover MIFARE Classic, MIFARE Ultralight, MIFARE DESFire, MIFARE Plus, NTAG, ISO15693, 125kHz, and UHF RFID technologies.
For the 13.56MHz MIFARE Classic 1K S50 card, please confirm your required chip, application, quantity, printing requirements, and encoding specifications before ordering. For existing systems, sample testing is recommended to verify card-reader compatibility.
Contact us for more information.


